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Potters Bar 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Potters Bar

Hertfordshire, United Kingdom

Long range weather outlook for Potters Bar includes 14 day forecast summary:

Over the next 14 days the Potters Bar forecast suggests the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 21°C expected on the afternoon of Friday 10th. The mean minimum temperature will be 11°C, dipping to its lowest on the morning of Sunday 5th at 8°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. The current forecast indicates Monday 6th will have the most precipitation with an accumulation of around 8.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 05
May
12:00

SSE
SSE

8 / 10 mph 62 / 61°F 58% 1007 mb
Low level cloud: 66%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

8 / 10 mph 59 / 56°F 77% 1007 mb
Low level cloud: 44%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

7 / 11 mph 56 / 54°F 89% 1006 mb
Low level cloud: 11%
Mid level cloud: 74%
High level cloud: 61%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

4 / 7 mph 52 / 51°F 93% 1007 mb
Low level cloud: 11%
Mid level cloud: 46%
High level cloud: 19%
Most Significant Cloud Type: medium
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
00:00

SW
SW

3 / 4 mph 51 / 51°F 94% 1007 mb
Low level cloud: 9%
Mid level cloud: 20%
High level cloud: 10%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

2 / 4 mph 48 / 48°F 94% 1007 mb
Low level cloud: 12%
Mid level cloud: 20%
High level cloud: 3%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

2 / 4 mph 49 / 48°F 90% 1007 mb
Low level cloud: 8%
Mid level cloud: 10%
High level cloud: 1%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

2 / 2 mph 58 / 56°F 70% 1007 mb
Low level cloud: 5%
Mid level cloud: 21%
High level cloud: 4%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

5 / 6 mph 62 / 60°F 64% 1008 mb
Low level cloud: 32%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

5 / 6 mph 59 / 58°F 73% 1009 mb
Low level cloud: 16%
Mid level cloud: 100%
High level cloud: 1%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

4 / 6 mph 59 / 57°F 80% 1010 mb
Low level cloud: 10%
Mid level cloud: 28%
High level cloud: 38%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

4 / 6 mph 53 / 52°F 89% 1012 mb
Low level cloud: 2%
Mid level cloud: 24%
High level cloud: 6%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
00:00

NNE
NNE

4 / 6 mph 50 / 50°F 90% 1013 mb
Low level cloud: 4%
Mid level cloud: 33%
High level cloud: 16%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

4 / 7 mph 50 / 49°F 94% 1015 mb
Low level cloud: 59%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

5 / 8 mph 50 / 48°F 95% 1017 mb
Low level cloud: 86%
Mid level cloud: 45%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

5 / 7 mph 58 / 55°F 80% 1019 mb
Low level cloud: 55%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

5 / 7 mph 62 / 62°F 64% 1021 mb
Low level cloud: 92%
Mid level cloud: 22%
High level cloud: 13%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

5 / 6 mph 64 / 62°F 63% 1022 mb
Low level cloud: 70%
Mid level cloud: 18%
High level cloud: 11%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

4 / 6 mph 64 / 61°F 76% 1023 mb
Low level cloud: 60%
Mid level cloud: 8%
High level cloud: 44%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

4 / 7 mph 57 / 57°F 85% 1025 mb
Low level cloud: 40%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
00:00

NNW
NNW

4 / 7 mph 54 / 54°F 92% 1026 mb
Low level cloud: 23%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

5 / 9 mph 51 / 49°F 96% 1026 mb
Low level cloud: 44%
Mid level cloud: 26%
High level cloud: 21%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

6 / 9 mph 52 / 47°F 93% 1027 mb
Low level cloud: 66%
Mid level cloud: 17%
High level cloud: 1%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

5 / 7 mph 55 / 52°F 84% 1028 mb
Low level cloud: 70%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

4 / 5 mph 63 / 60°F 68% 1028 mb
Low level cloud: 43%
Mid level cloud: 3%
High level cloud: 3%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

4 / 5 mph 66 / 64°F 60% 1027 mb
Low level cloud: 45%
Mid level cloud: 9%
High level cloud: 13%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

6 / 8 mph 64 / 61°F 79% 1027 mb
Low level cloud: 30%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

6 / 9 mph 55 / 54°F 91% 1028 mb
Low level cloud: 60%
Mid level cloud: 45%
High level cloud: 62%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May
00:00

S
S

5 / 7 mph 54 / 53°F 95% 1028 mb
Low level cloud: 38%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

5 / 8 mph 53 / 52°F 94% 1027 mb
Low level cloud: 25%
Mid level cloud: 7%
High level cloud: 32%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

4 / 6 mph 55 / 53°F 90% 1027 mb
Low level cloud: 43%
Mid level cloud: 44%
High level cloud: 56%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

4 / 5 mph 61 / 61°F 76% 1026 mb
Low level cloud: 91%
Mid level cloud: 46%
High level cloud: 27%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

5 / 6 mph 67 / 64°F 68% 1025 mb
Low level cloud: 36%
Mid level cloud: 43%
High level cloud: 18%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

5 / 7 mph 69 / 66°F 61% 1024 mb
Low level cloud: 36%
Mid level cloud: 46%
High level cloud: 5%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

4 / 6 mph 67 / 64°F 76% 1024 mb
Low level cloud: 49%
Mid level cloud: 32%
High level cloud: 34%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

4 / 6 mph 60 / 60°F 87% 1025 mb
Low level cloud: 59%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May
00:00

SSE
SSE

3 / 5 mph 58 / 59°F 90% 1024 mb
Low level cloud: 57%
Mid level cloud: 19%
High level cloud: 33%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

2 / 4 mph 57 / 58°F 91% 1023 mb
Low level cloud: 63%
Mid level cloud: 25%
High level cloud: 93%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

3 / 4 mph 58 / 58°F 89% 1024 mb
Low level cloud: 78%
Mid level cloud: 45%
High level cloud: 63%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

3 / 4 mph 62 / 60°F 80% 1023 mb
Low level cloud: 57%
Mid level cloud: 39%
High level cloud: 93%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

2 / 3 mph 70 / 67°F 61% 1023 mb
Low level cloud: 22%
Mid level cloud: 29%
High level cloud: 93%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

2 / 3 mph 73 / 69°F 56% 1021 mb
Low level cloud: 44%
Mid level cloud: 23%
High level cloud: 33%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

5 / 6 mph 69 / 67°F 75% 1021 mb
Low level cloud: 32%
Mid level cloud: 31%
High level cloud: 57%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

4 / 7 mph 60 / 60°F 91% 1022 mb
Low level cloud: 43%
Mid level cloud: 46%
High level cloud: 37%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 11
May
00:00

S
S

3 / 6 mph 59 / 59°F 93% 1021 mb
Low level cloud: 32%
Mid level cloud: 34%
High level cloud: 100%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

3 / 4 mph 58 / 59°F 92% 1020 mb
Low level cloud: 29%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

2 / 4 mph 59 / 58°F 87% 1020 mb
Low level cloud: 31%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

6 / 8 mph 67 / 64°F 66% 1020 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

8 / 9 mph 71 / 69°F 57% 1019 mb
Low level cloud: 8%
Mid level cloud: 5%
High level cloud: 14%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

9 / 11 mph 71 / 69°F 57% 1018 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 18%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

9 / 11 mph 69 / 67°F 73% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 10%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

6 / 7 mph 62 / 62°F 85% 1017 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 13%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 12
May
00:00

ESE
ESE

6 / 10 mph 61 / 61°F 86% 1022 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 69%
Most Significant Cloud Type: medium
7%
0.0 In
06:00

ESE
ESE

4 / 7 mph 58 / 59°F 84% 1021 mb
Low level cloud: 33%
Mid level cloud: 55%
High level cloud: 21%
Most Significant Cloud Type: low
54%
0.0 In
12:00

ENE
ENE

12 / 24 mph 55 / 51°F 67% 1027 mb
Low level cloud: 83%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
18:00

NNE
NNE

9 / 17 mph 63 / 63°F 62% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
0.0 In
Mon 13
May
00:00

NE
NE

10 / 20 mph 44 / 38°F 93% 1019 mb
Low level cloud: 41%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
41%
0.0 In
06:00

WSW
WSW

5 / 11 mph 58 / 58°F 92% 1008 mb
Low level cloud: 24%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.0 In
12:00

S
S

9 / 18 mph 68 / 68°F 74% 1008 mb
Low level cloud: 86%
Mid level cloud: 31%
High level cloud: 41%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NE
NE

10 / 21 mph 68 / 68°F 79% 1011 mb
Low level cloud: 31%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.0 In
Tue 14
May
00:00

SE
SE

3 / 6 mph 69 / 69°F 90% 1008 mb
Low level cloud: 13%
Mid level cloud: 2%
High level cloud: 10%
Most Significant Cloud Type: low
15%
0.0 In
06:00

NNE
NNE

9 / 19 mph 54 / 51°F 94% 1009 mb
Low level cloud: 93%
Mid level cloud: 5%
High level cloud: 6%
Most Significant Cloud Type: low
95%
0.0 In
12:00

ESE
ESE

10 / 20 mph 71 / 71°F 65% 1005 mb
Low level cloud: 52%
Mid level cloud: 45%
High level cloud: 46%
Most Significant Cloud Type: low
73%
0.0 In
18:00

ENE
ENE

6 / 13 mph 62 / 62°F 94% 1006 mb
Low level cloud: 63%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
79%
0.0 In
Wed 15
May
00:00

NNE
NNE

6 / 12 mph 61 / 61°F 99% 1003 mb
Low level cloud: 97%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.6 In
06:00

SW
SW

4 / 7 mph 59 / 59°F 95% 1007 mb
Low level cloud: 75%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
75%
0.1 In
12:00

ENE
ENE

7 / 14 mph 51 / 49°F 96% 1004 mb
Low level cloud: 87%
Mid level cloud: 99%
High level cloud: 26%
Most Significant Cloud Type: low
100%
0.6 In
18:00

NNE
NNE

13 / 26 mph 56 / 53°F 92% 1004 mb
Low level cloud: 97%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Thu 16
May
00:00

NE
NE

18 / 38 mph 43 / 35°F 92% 1010 mb
Low level cloud: 100%
Mid level cloud: 73%
High level cloud: 40%
Most Significant Cloud Type: low
100%
0.7 In
06:00

NNE
NNE

13 / 26 mph 46 / 40°F 94% 1008 mb
Low level cloud: 98%
Mid level cloud: 90%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.7 In
12:00

NE
NE

21 / 43 mph 46 / 38°F 95% 1013 mb
Low level cloud: 100%
Mid level cloud: 86%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
18:00

NNE
NNE

12 / 26 mph 49 / 44°F 74% 1017 mb
Low level cloud: 11%
Mid level cloud: 45%
High level cloud: 7%
Most Significant Cloud Type: medium
75%
0.0 In
Fri 17
May
00:00

NE
NE

19 / 40 mph 46 / 39°F 75% 1016 mb
Low level cloud: 99%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NNE
NNE

10 / 21 mph 44 / 39°F 87% 1022 mb
Low level cloud: 25%
Mid level cloud: 8%
High level cloud: 33%
Most Significant Cloud Type: low
31%
0.0 In
12:00

NE
NE

17 / 37 mph 48 / 42°F 80% 1016 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NNE
NNE

14 / 29 mph 50 / 45°F 69% 1024 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 11%
Most Significant Cloud Type: medium
4%
0.0 In
Sat 18
May
00:00

NNE
NNE

14 / 29 mph 45 / 38°F 79% 1016 mb
Low level cloud: 67%
Mid level cloud: 57%
High level cloud: 100%
Most Significant Cloud Type: low
98%
0.0 In
06:00

N
N

10 / 21 mph 42 / 36°F 85% 1026 mb
Low level cloud: 36%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
36%
0.0 In
12:00

NNE
NNE

12 / 24 mph 52 / 48°F 67% 1015 mb
Low level cloud: 78%
Mid level cloud: 79%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NNE
NNE

10 / 21 mph 55 / 53°F 65% 1025 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 13%
Most Significant Cloud Type: medium
6%
0.0 In
Sun 19
May
00:00

NNE
NNE

5 / 10 mph 51 / 49°F 92% 1017 mb
Low level cloud: 7%
Mid level cloud: 10%
High level cloud: 12%
Most Significant Cloud Type: low
11%
0.0 In
06:00

NNE
NNE

6 / 13 mph 49 / 46°F 84% 1026 mb
Low level cloud: 7%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.0 In
12:00

ENE
ENE

6 / 13 mph 56 / 54°F 56% 1015 mb
Low level cloud: 79%
Mid level cloud: 75%
High level cloud: 5%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NNE
NNE

8 / 17 mph 59 / 59°F 67% 1025 mb
Low level cloud: 35%
Mid level cloud: 1%
High level cloud: 4%
Most Significant Cloud Type: low
36%
0.0 In
Mon 20
May
00:00

NW
NW

3 / 6 mph 50 / 49°F 93% 1016 mb
Low level cloud: 47%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
61%
0.1 In
06:00

NNW
NNW

2 / 5 mph 57 / 58°F 80% 1026 mb
Low level cloud: 3%
Mid level cloud: 12%
High level cloud: 2%
Most Significant Cloud Type: medium
21%
0.0 In
12:00

NNW
NNW

3 / 7 mph 61 / 61°F 55% 1016 mb
Low level cloud: 23%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
31%
0.0 In
18:00

NE
NE

9 / 19 mph 61 / 61°F 80% 1024 mb
Low level cloud: 8%
Mid level cloud: 24%
High level cloud: 12%
Most Significant Cloud Type: medium
46%
0.0 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