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Slip End 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Slip End

Hertfordshire, United Kingdom

Long range weather outlook for Slip End includes 14 day forecast summary:

The forecast for Slip End in the coming two weeks is predicting the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 20°C expected on the afternoon of Sunday 12th. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Thursday 9th at 4°C. Expect the next 14 days have most days seeing a little rain. The current forecast indicates Monday 6th will have the most precipitation with an accumulation of around 25.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 03
May
12:00

WSW
WSW

16 / 22 mph 49 / 42°F 95% 1008 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

WSW
WSW

15 / 17 mph 50 / 44°F 94% 1010 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

WSW
WSW

12 / 17 mph 49 / 44°F 90% 1010 mb
Low level cloud: 24%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: low
56%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSW
SSW

9 / 14 mph 48 / 44°F 94% 1011 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May
00:00

SSW
SSW

8 / 13 mph 45 / 41°F 96% 1012 mb
Low level cloud: 13%
Mid level cloud: 1%
High level cloud: 20%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

7 / 13 mph 43 / 39°F 97% 1011 mb
Low level cloud: 39%
Mid level cloud: 2%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

5 / 9 mph 45 / 41°F 96% 1012 mb
Low level cloud: 34%
Mid level cloud: 8%
High level cloud: 18%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

8 / 10 mph 54 / 50°F 79% 1012 mb
Low level cloud: 21%
Mid level cloud: 17%
High level cloud: 21%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

6 / 7 mph 60 / 57°F 59% 1011 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

8 / 11 mph 58 / 55°F 75% 1010 mb
Low level cloud: 31%
Mid level cloud: 84%
High level cloud: 34%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

5 / 6 mph 58 / 56°F 85% 1010 mb
Low level cloud: 13%
Mid level cloud: 26%
High level cloud: 16%
Most Significant Cloud Type: low
24%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SE
SE

5 / 9 mph 50 / 48°F 92% 1010 mb
Low level cloud: 13%
Mid level cloud: 22%
High level cloud: 32%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May
00:00

S
S

4 / 7 mph 48 / 46°F 94% 1009 mb
Low level cloud: 9%
Mid level cloud: 10%
High level cloud: 6%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

4 / 8 mph 46 / 44°F 92% 1009 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

3 / 6 mph 48 / 46°F 89% 1009 mb
Low level cloud: 2%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

7 / 8 mph 56 / 53°F 79% 1008 mb
Low level cloud: 67%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

8 / 10 mph 56 / 53°F 80% 1008 mb
Low level cloud: 23%
Mid level cloud: 22%
High level cloud: 10%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

6 / 7 mph 62 / 59°F 68% 1006 mb
Low level cloud: 33%
Mid level cloud: 14%
High level cloud: 13%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

6 / 9 mph 58 / 56°F 85% 1006 mb
Low level cloud: 12%
Mid level cloud: 30%
High level cloud: 12%
Most Significant Cloud Type: low
24%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSW
SSW

5 / 10 mph 51 / 49°F 92% 1007 mb
Low level cloud: 4%
Mid level cloud: 45%
High level cloud: 12%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
00:00

SSW
SSW

4 / 7 mph 48 / 47°F 89% 1006 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 15%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

3 / 6 mph 45 / 44°F 86% 1006 mb
Low level cloud: 0%
Mid level cloud: 68%
High level cloud: 2%
Most Significant Cloud Type: medium
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

2 / 2 mph 48 / 47°F 83% 1006 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 87%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

5 / 6 mph 56 / 53°F 75% 1007 mb
Low level cloud: 5%
Mid level cloud: 23%
High level cloud: 89%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

6 / 8 mph 60 / 58°F 64% 1007 mb
Low level cloud: 8%
Mid level cloud: 12%
High level cloud: 98%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

9 / 12 mph 59 / 56°F 74% 1008 mb
Low level cloud: 46%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

6 / 9 mph 57 / 54°F 89% 1009 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: medium
51%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

N
N

5 / 9 mph 51 / 49°F 94% 1012 mb
Low level cloud: 7%
Mid level cloud: 8%
High level cloud: 20%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
00:00

NNE
NNE

4 / 8 mph 47 / 45°F 96% 1013 mb
Low level cloud: 26%
Mid level cloud: 11%
High level cloud: 32%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

4 / 7 mph 45 / 44°F 96% 1015 mb
Low level cloud: 34%
Mid level cloud: 29%
High level cloud: 16%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

4 / 6 mph 47 / 46°F 93% 1016 mb
Low level cloud: 17%
Mid level cloud: 59%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

9 / 11 mph 53 / 51°F 90% 1018 mb
Low level cloud: 88%
Mid level cloud: 53%
High level cloud: 12%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

9 / 11 mph 55 / 53°F 83% 1019 mb
Low level cloud: 98%
Mid level cloud: 28%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

10 / 14 mph 58 / 55°F 82% 1020 mb
Low level cloud: 69%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

7 / 11 mph 59 / 56°F 84% 1021 mb
Low level cloud: 62%
Mid level cloud: 26%
High level cloud: 18%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

6 / 9 mph 52 / 51°F 95% 1023 mb
Low level cloud: 89%
Mid level cloud: 33%
High level cloud: 39%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
00:00

NNE
NNE

6 / 9 mph 49 / 47°F 92% 1024 mb
Low level cloud: 72%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

6 / 9 mph 46 / 43°F 96% 1025 mb
Low level cloud: 37%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

7 / 10 mph 47 / 42°F 94% 1027 mb
Low level cloud: 48%
Mid level cloud: 9%
High level cloud: 86%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

8 / 10 mph 54 / 51°F 80% 1028 mb
Low level cloud: 71%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

7 / 9 mph 58 / 56°F 69% 1028 mb
Low level cloud: 83%
Mid level cloud: 5%
High level cloud: 73%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

7 / 9 mph 58 / 56°F 70% 1028 mb
Low level cloud: 69%
Mid level cloud: 4%
High level cloud: 60%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

5 / 7 mph 57 / 55°F 83% 1028 mb
Low level cloud: 85%
Mid level cloud: 4%
High level cloud: 37%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

8 / 11 mph 50 / 47°F 90% 1029 mb
Low level cloud: 42%
Mid level cloud: 7%
High level cloud: 58%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
00:00

E
E

5 / 9 mph 44 / 41°F 93% 1030 mb
Low level cloud: 1%
Mid level cloud: 31%
High level cloud: 32%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

5 / 9 mph 42 / 39°F 94% 1030 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 95%
Most Significant Cloud Type: medium
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

6 / 9 mph 45 / 42°F 92% 1029 mb
Low level cloud: 28%
Mid level cloud: 16%
High level cloud: 25%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

9 / 10 mph 55 / 52°F 76% 1028 mb
Low level cloud: 73%
Mid level cloud: 10%
High level cloud: 21%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

9 / 12 mph 58 / 56°F 70% 1028 mb
Low level cloud: 96%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

10 / 14 mph 58 / 55°F 73% 1026 mb
Low level cloud: 75%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

11 / 15 mph 56 / 52°F 83% 1026 mb
Low level cloud: 36%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

8 / 13 mph 49 / 46°F 84% 1027 mb
Low level cloud: 87%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 10
May
00:00

ESE
ESE

3 / 6 mph 56 / 56°F 78% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 14%
Most Significant Cloud Type: high
14%
0.0 In
06:00

SW
SW

4 / 9 mph 53 / 52°F 86% 1027 mb
Low level cloud: 46%
Mid level cloud: 98%
High level cloud: 9%
Most Significant Cloud Type: low
81%
0.0 In
12:00

ESE
ESE

11 / 22 mph 63 / 63°F 64% 1027 mb
Low level cloud: 38%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.0 In
18:00

E
E

9 / 19 mph 66 / 66°F 78% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 11
May
00:00

ESE
ESE

6 / 12 mph 53 / 52°F 89% 1018 mb
Low level cloud: 7%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
67%
0.0 In
06:00

SSW
SSW

4 / 8 mph 61 / 62°F 87% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

ESE
ESE

5 / 11 mph 69 / 69°F 63% 1018 mb
Low level cloud: 6%
Mid level cloud: 9%
High level cloud: 36%
Most Significant Cloud Type: low
13%
0.0 In
18:00

ESE
ESE

8 / 16 mph 65 / 65°F 74% 1022 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Sun 12
May
00:00

SSW
SSW

4 / 9 mph 61 / 61°F 92% 1017 mb
Low level cloud: 6%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.0 In
06:00

E
E

3 / 6 mph 57 / 58°F 90% 1022 mb
Low level cloud: 9%
Mid level cloud: 2%
High level cloud: 16%
Most Significant Cloud Type: low
11%
0.0 In
12:00

SW
SW

9 / 19 mph 68 / 69°F 68% 1016 mb
Low level cloud: 77%
Mid level cloud: 14%
High level cloud: 9%
Most Significant Cloud Type: low
82%
0.0 In
18:00

ESE
ESE

7 / 14 mph 67 / 67°F 83% 1019 mb
Low level cloud: 13%
Mid level cloud: 23%
High level cloud: 7%
Most Significant Cloud Type: low
21%
0.0 In
Mon 13
May
00:00

WSW
WSW

7 / 15 mph 57 / 56°F 90% 1016 mb
Low level cloud: 2%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
10%
0.1 In
06:00

S
S

8 / 16 mph 56 / 54°F 90% 1014 mb
Low level cloud: 5%
Mid level cloud: 40%
High level cloud: 100%
Most Significant Cloud Type: medium
57%
0.0 In
12:00

SSW
SSW

14 / 30 mph 62 / 62°F 84% 1012 mb
Low level cloud: 86%
Mid level cloud: 25%
High level cloud: 57%
Most Significant Cloud Type: low
100%
0.0 In
18:00

W
W

14 / 29 mph 55 / 52°F 81% 1012 mb
Low level cloud: 31%
Mid level cloud: 1%
High level cloud: 31%
Most Significant Cloud Type: low
35%
0.1 In
Tue 14
May
00:00

W
W

6 / 14 mph 56 / 55°F 96% 1009 mb
Low level cloud: 78%
Mid level cloud: 80%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
06:00

WNW
WNW

9 / 19 mph 46 / 42°F 89% 1014 mb
Low level cloud: 24%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.0 In
12:00

WSW
WSW

9 / 19 mph 61 / 62°F 57% 1007 mb
Low level cloud: 28%
Mid level cloud: 10%
High level cloud: 100%
Most Significant Cloud Type: low
43%
0.1 In
18:00

WNW
WNW

6 / 13 mph 54 / 53°F 75% 1012 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 77%
Most Significant Cloud Type: medium
100%
0.0 In
Wed 15
May
00:00

SW
SW

8 / 17 mph 49 / 46°F 93% 1007 mb
Low level cloud: 13%
Mid level cloud: 9%
High level cloud: 8%
Most Significant Cloud Type: low
16%
0.0 In
06:00

SSW
SSW

2 / 4 mph 53 / 54°F 84% 1011 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: low
2%
0.0 In
12:00

W
W

9 / 19 mph 60 / 60°F 56% 1009 mb
Low level cloud: 28%
Mid level cloud: 11%
High level cloud: 3%
Most Significant Cloud Type: low
32%
0.0 In
18:00

S
S

11 / 23 mph 53 / 49°F 68% 1005 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 99%
Most Significant Cloud Type: medium
48%
0.0 In
Thu 16
May
00:00

W
W

5 / 10 mph 51 / 49°F 85% 1012 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 17%
Most Significant Cloud Type: medium
26%
0.0 In
06:00

SE
SE

15 / 32 mph 49 / 43°F 94% 997 mb
Low level cloud: 91%
Mid level cloud: 87%
High level cloud: 12%
Most Significant Cloud Type: low
100%
0.1 In
12:00

WNW
WNW

6 / 12 mph 62 / 62°F 57% 1014 mb
Low level cloud: 50%
Mid level cloud: 10%
High level cloud: 17%
Most Significant Cloud Type: low
55%
0.0 In
18:00

SW
SW

8 / 17 mph 55 / 53°F 89% 997 mb
Low level cloud: 17%
Mid level cloud: 34%
High level cloud: 100%
Most Significant Cloud Type: low
40%
0.3 In
Fri 17
May
00:00

WSW
WSW

5 / 11 mph 55 / 53°F 92% 1015 mb
Low level cloud: 1%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.0 In
06:00

S
S

5 / 11 mph 49 / 47°F 95% 1001 mb
Low level cloud: 55%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
60%
0.0 In
12:00

SSW
SSW

16 / 33 mph 58 / 55°F 65% 1010 mb
Low level cloud: 0%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: medium
73%
0.0 In
18:00

SSE
SSE

7 / 15 mph 57 / 56°F 75% 1002 mb
Low level cloud: 50%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
53%
0.1 In
Sat 18
May
00:00

SW
SW

9 / 20 mph 48 / 44°F 96% 1005 mb
Low level cloud: 84%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.2 In
06:00

ESE
ESE

7 / 15 mph 48 / 45°F 98% 1006 mb
Low level cloud: 90%
Mid level cloud: 78%
High level cloud: 75%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WNW
WNW

13 / 26 mph 54 / 51°F 83% 1011 mb
Low level cloud: 96%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
18:00

ENE
ENE

13 / 28 mph 52 / 48°F 93% 1007 mb
Low level cloud: 73%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure