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Dam Side 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Dam Side

Lancashire, United Kingdom

Long range weather outlook for Dam Side includes 14 day forecast summary:

For Dam Side in the coming two weeks the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 24°C expected on the evening of Thursday 19th. The mean minimum temperature will be 13°C, dipping to its lowest on the morning of Thursday 19th at 10°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. The indicators are that Saturday 14th will have the most precipitation with an accumulation of around 17.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 14
Jun		18:00

WSW
WSW

 16 / 19 mph 63 / 62°F 92% 1014 mb
Low level cloud: 49%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 13 / 15 mph 60 / 59°F 95% 1015 mb
Low level cloud: 62%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 15
Jun		00:00

W
W

 10 / 13 mph 56 / 53°F 93% 1016 mb
Low level cloud: 74%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 9 / 13 mph 55 / 52°F 93% 1017 mb
Low level cloud: 59%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

 8 / 14 mph 54 / 51°F 88% 1018 mb
Low level cloud: 70%
Mid level cloud: 63%
High level cloud: 11%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 14 / 21 mph 56 / 52°F 79% 1020 mb
Low level cloud: 2%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 16 / 18 mph 58 / 55°F 84% 1021 mb
Low level cloud: 94%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 13 / 15 mph 60 / 60°F 90% 1022 mb
Low level cloud: 94%
Mid level cloud: 81%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 10 / 12 mph 59 / 57°F 91% 1023 mb
Low level cloud: 72%
Mid level cloud: 44%
High level cloud: 14%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 6 / 9 mph 59 / 56°F 93% 1024 mb
Low level cloud: 65%
Mid level cloud: 6%
High level cloud: 30%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 16
Jun		00:00

W
W

 5 / 8 mph 55 / 54°F 92% 1025 mb
Low level cloud: 22%
Mid level cloud: 6%
High level cloud: 20%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 4 / 8 mph 53 / 52°F 93% 1026 mb
Low level cloud: 89%
Mid level cloud: 8%
High level cloud: 14%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 9 / 11 mph 59 / 55°F 92% 1026 mb
Low level cloud: 43%
Mid level cloud: 13%
High level cloud: 15%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 13 / 15 mph 61 / 60°F 79% 1027 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 10%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 9 / 11 mph 63 / 62°F 75% 1027 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 43%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 8 / 9 mph 64 / 62°F 75% 1026 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 76%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 6 / 8 mph 64 / 62°F 79% 1026 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 6 / 12 mph 59 / 56°F 86% 1026 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 17
Jun		00:00

SSW
SSW

 9 / 15 mph 56 / 53°F 87% 1025 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 86%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 10 / 17 mph 55 / 52°F 88% 1024 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 17%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 12 / 24 mph 54 / 49°F 86% 1024 mb
Low level cloud: 4%
Mid level cloud: 16%
High level cloud: 16%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 15 / 25 mph 56 / 52°F 87% 1025 mb
Low level cloud: 95%
Mid level cloud: 83%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 8 / 9 mph 59 / 59°F 93% 1026 mb
Low level cloud: 97%
Mid level cloud: 94%
High level cloud: 8%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

SW
SW

 6 / 7 mph 61 / 61°F 90% 1026 mb
Low level cloud: 87%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 5 / 6 mph 60 / 60°F 88% 1026 mb
Low level cloud: 84%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

 4 / 7 mph 58 / 57°F 92% 1026 mb
Low level cloud: 82%
Mid level cloud: 26%
High level cloud: 2%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 18
Jun		00:00

SW
SW

 4 / 7 mph 57 / 56°F 93% 1025 mb
Low level cloud: 84%
Mid level cloud: 8%
High level cloud: 4%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 4 / 7 mph 57 / 57°F 94% 1025 mb
Low level cloud: 91%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

 5 / 6 mph 59 / 58°F 94% 1026 mb
Low level cloud: 73%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 7 / 8 mph 63 / 61°F 79% 1026 mb
Low level cloud: 7%
Mid level cloud: 7%
High level cloud: 20%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 12 / 14 mph 63 / 62°F 66% 1027 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 17%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 11 / 13 mph 63 / 62°F 69% 1027 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 6%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 9 / 10 mph 63 / 61°F 74% 1027 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 1 / 2 mph 58 / 56°F 85% 1028 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 19
Jun		00:00

ENE
ENE

 5 / 9 mph 53 / 52°F 85% 1028 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 5 / 10 mph 51 / 49°F 85% 1028 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 4 / 7 mph 57 / 56°F 82% 1028 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 4 / 5 mph 66 / 63°F 73% 1027 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 5 / 6 mph 71 / 68°F 65% 1027 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 7 / 11 mph 74 / 76°F 62% 1025 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 56%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 5 / 10 mph 75 / 76°F 70% 1024 mb
Low level cloud: 10%
Mid level cloud: 4%
High level cloud: 93%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 9 / 18 mph 66 / 63°F 76% 1024 mb
Low level cloud: 33%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 20
Jun		00:00

ESE
ESE

 9 / 18 mph 59 / 59°F 71% 1025 mb
Low level cloud: 11%
Mid level cloud: 24%
High level cloud: 55%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 7 / 14 mph 56 / 55°F 75% 1025 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 32%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 6 / 11 mph 59 / 57°F 76% 1025 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 5%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 10 / 13 mph 66 / 65°F 58% 1024 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 19%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 11 / 17 mph 72 / 76°F 56% 1022 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 13%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SE
SE

 10 / 19 mph 74 / 76°F 63% 1020 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 33%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 6 / 13 mph 71 / 70°F 71% 1018 mb
Low level cloud: 1%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: medium
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 2 / 3 mph 68 / 66°F 75% 1018 mb
Low level cloud: 14%
Mid level cloud: 43%
High level cloud: 20%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 21
Jun		00:00

ENE
ENE

 4 / 9 mph 59 / 59°F 79% 1025 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: medium
4%
0.0 In
06:00

E
E

 6 / 14 mph 55 / 53°F 79% 1027 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
12:00

ESE
ESE

 7 / 14 mph 71 / 71°F 57% 1021 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
0.0 In
18:00

E
E

 8 / 17 mph 68 / 68°F 62% 1026 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
Sun 22
Jun		00:00

E
E

 11 / 23 mph 53 / 50°F 88% 1024 mb
Low level cloud: 0%
Mid level cloud: 79%
High level cloud: 100%
Most Significant Cloud Type: medium
82%
0.0 In
06:00

SSE
SSE

 17 / 35 mph 54 / 49°F 90% 1005 mb
Low level cloud: 94%
Mid level cloud: 43%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WSW
WSW

 20 / 43 mph 58 / 54°F 90% 1007 mb
Low level cloud: 77%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
86%
0.0 In
18:00

SW
SW

 15 / 29 mph 64 / 64°F 74% 1016 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
Mon 23
Jun		00:00

WSW
WSW

 9 / 17 mph 56 / 53°F 94% 1015 mb
Low level cloud: 27%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

S
S

 11 / 22 mph 54 / 51°F 81% 1013 mb
Low level cloud: 100%
Mid level cloud: 27%
High level cloud: 1%
Most Significant Cloud Type: low
100%
0.0 In
12:00

WSW
WSW

 13 / 24 mph 59 / 59°F 78% 1016 mb
Low level cloud: 41%
Mid level cloud: 24%
High level cloud: 56%
Most Significant Cloud Type: low
55%
0.0 In
18:00

SW
SW

 5 / 10 mph 61 / 61°F 73% 1014 mb
Low level cloud: 3%
Mid level cloud: 29%
High level cloud: 1%
Most Significant Cloud Type: medium
36%
0.0 In
Tue 24
Jun		00:00

WNW
WNW

 11 / 21 mph 54 / 51°F 85% 1019 mb
Low level cloud: 2%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.0 In
06:00

WNW
WNW

 8 / 16 mph 53 / 50°F 88% 1015 mb
Low level cloud: 24%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
12:00

WSW
WSW

 8 / 15 mph 58 / 56°F 65% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 93%
Most Significant Cloud Type: high
92%
0.0 In
18:00

WSW
WSW

 10 / 20 mph 59 / 57°F 73% 1019 mb
Low level cloud: 9%
Mid level cloud: 14%
High level cloud: 98%
Most Significant Cloud Type: medium
42%
0.0 In
Wed 25
Jun		00:00

E
E

 9 / 18 mph 56 / 54°F 55% 1020 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
0.0 In
06:00

N
N

 1 / 3 mph 58 / 58°F 80% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
0.0 In
12:00

SSE
SSE

 13 / 24 mph 74 / 77°F 58% 1016 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 4%
Most Significant Cloud Type: medium
18%
0.0 In
18:00

WNW
WNW

 2 / 5 mph 66 / 66°F 67% 1019 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Thu 26
Jun		00:00

ESE
ESE

 19 / 39 mph 71 / 71°F 51% 1011 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
0.0 In
06:00

E
E

 4 / 9 mph 58 / 58°F 70% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 11%
Most Significant Cloud Type: medium
5%
0.0 In
12:00

SE
SE

 18 / 36 mph 79 / 80°F 48% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 27%
Most Significant Cloud Type: high
27%
0.0 In
18:00

WNW
WNW

 5 / 11 mph 68 / 68°F 74% 1011 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 12%
Most Significant Cloud Type: medium
32%
0.0 In
Fri 27
Jun		00:00

N
N

 1 / 1 mph 68 / 68°F 90% 1007 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
21%
0.1 In
06:00

WNW
WNW

 15 / 30 mph 56 / 52°F 83% 1015 mb
Low level cloud: 8%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
12:00

SSW
SSW

 12 / 25 mph 66 / 66°F 70% 1007 mb
Low level cloud: 54%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
64%
0.0 In
18:00

W
W

 12 / 25 mph 62 / 62°F 83% 1022 mb
Low level cloud: 94%
Mid level cloud: 86%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
Sat 28
Jun		00:00

SSW
SSW

 13 / 27 mph 57 / 54°F 83% 1012 mb
Low level cloud: 100%
Mid level cloud: 39%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.0 In
06:00

W
W

 13 / 26 mph 57 / 55°F 95% 1022 mb
Low level cloud: 97%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.0 In
12:00

SW
SW

 20 / 42 mph 60 / 60°F 91% 1014 mb
Low level cloud: 98%
Mid level cloud: 79%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
18:00

W
W

 11 / 23 mph 62 / 62°F 75% 1024 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
0.0 In
Sun 29
Jun		00:00

NW
NW

 7 / 16 mph 56 / 54°F 83% 1020 mb
Low level cloud: 10%
Mid level cloud: 6%
High level cloud: 69%
Most Significant Cloud Type: low
20%
0.1 In
06:00

WSW
WSW

 8 / 15 mph 61 / 61°F 96% 1023 mb
Low level cloud: 79%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
80%
0.0 In
12:00

WNW
WNW

 15 / 32 mph 59 / 56°F 66% 1024 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
18:00

W
W

 8 / 16 mph 65 / 65°F 88% 1022 mb
Low level cloud: 49%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
50%
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