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Whitinsville 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Whitinsville

Massachusetts, United States Of America

Long range weather outlook for Whitinsville includes 14 day forecast summary:

The forecast for Whitinsville in the coming two weeks is predicting the average daytime maximum temperature will be around 25°C, with a high for the two weeks of 32°C expected on the afternoon of Thursday 23rd. The mean minimum temperature will be 13°C, dipping to its lowest on the morning of Monday 20th at 10°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. The indicators are that Monday 27th will have the most precipitation with an accumulation of around 6.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 20
May		16:00

E
E

 4 / 4 mph 78 / 77°F 53% 1015 mb
Low level cloud: 22%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

 5 / 8 mph 66 / 63°F 86% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 5 / 9 mph 54 / 53°F 97% 1016 mb
Low level cloud: 17%
Mid level cloud: 4%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		01:00

SW
SW

 5 / 10 mph 51 / 49°F 98% 1016 mb
Low level cloud: 18%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 4 / 9 mph 50 / 49°F 98% 1016 mb
Low level cloud: 12%
Mid level cloud: 9%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 6 / 7 mph 66 / 63°F 78% 1016 mb
Low level cloud: 1%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 7 / 8 mph 80 / 79°F 58% 1015 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 8 / 9 mph 86 / 84°F 45% 1013 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 10%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 9 / 11 mph 84 / 84°F 54% 1013 mb
Low level cloud: 3%
Mid level cloud: 9%
High level cloud: 16%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

 9 / 13 mph 70 / 67°F 79% 1014 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 99%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 8 / 13 mph 62 / 62°F 84% 1015 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 29%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		01:00

SW
SW

 7 / 13 mph 60 / 60°F 85% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 18%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 8 / 16 mph 58 / 57°F 92% 1014 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 3%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 10 / 12 mph 72 / 70°F 72% 1015 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 2%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

 10 / 11 mph 83 / 83°F 51% 1014 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 4%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 10 / 12 mph 88 / 88°F 42% 1012 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 2%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 11 / 13 mph 87 / 87°F 50% 1011 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 10 / 16 mph 71 / 69°F 74% 1012 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 10 / 17 mph 63 / 63°F 94% 1013 mb
Low level cloud: 9%
Mid level cloud: 43%
High level cloud: 10%
Most Significant Cloud Type: medium
70%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 23
May		01:00

SW
SW

 4 / 9 mph 61 / 61°F 96% 1010 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 9%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

 5 / 11 mph 60 / 60°F 97% 1011 mb
Low level cloud: 2%
Mid level cloud: 22%
High level cloud: 8%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 7 / 9 mph 72 / 69°F 88% 1011 mb
Low level cloud: 5%
Mid level cloud: 10%
High level cloud: 14%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 10 / 11 mph 84 / 84°F 53% 1010 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 10 / 11 mph 89 / 89°F 43% 1008 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 9%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 10 / 16 mph 71 / 68°F 94% 1009 mb
Low level cloud: 40%
Mid level cloud: 50%
High level cloud: 15%
Most Significant Cloud Type: low
59%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WSW
WSW

 5 / 9 mph 67 / 64°F 94% 1009 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 21%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 5 / 10 mph 62 / 62°F 94% 1010 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 80%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May		01:00

W
W

 4 / 9 mph 60 / 60°F 96% 1009 mb
Low level cloud: 4%
Mid level cloud: 30%
High level cloud: 34%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 4 / 9 mph 59 / 59°F 97% 1009 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 5 / 6 mph 69 / 66°F 80% 1010 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 10%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 4 / 5 mph 81 / 79°F 38% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 8 / 9 mph 85 / 80°F 27% 1008 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
16:00

W
W

 9 / 10 mph 85 / 81°F 32% 1007 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 6 / 11 mph 73 / 76°F 66% 1008 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 9 / 17 mph 65 / 65°F 65% 1010 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May		01:00

W
W

 4 / 5 mph 65 / 65°F 88% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 4 / 7 mph 57 / 57°F 95% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

 4 / 4 mph 66 / 63°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 3 / 4 mph 77 / 76°F 45% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 63%
Most Significant Cloud Type: high
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 3 / 3 mph 82 / 78°F 33% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 48%
Most Significant Cloud Type: high
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 2 / 4 mph 75 / 76°F 52% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 76%
Most Significant Cloud Type: high
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

 5 / 9 mph 62 / 61°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 4 / 7 mph 56 / 56°F 83% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 98%
Most Significant Cloud Type: high
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 26
May		01:00

SSE
SSE

 2 / 5 mph 55 / 56°F 83% 1017 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 1 / 2 mph 54 / 54°F 84% 1018 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 62%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

 5 / 6 mph 65 / 62°F 64% 1018 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 8%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ESE
ESE

 7 / 8 mph 74 / 75°F 39% 1019 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

 9 / 10 mph 78 / 76°F 35% 1017 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SE
SE

 10 / 11 mph 77 / 76°F 37% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ESE
ESE

 7 / 11 mph 62 / 60°F 62% 1018 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

 6 / 8 mph 57 / 56°F 77% 1018 mb
Low level cloud: 98%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 27
May		01:00

SSW
SSW

 6 / 10 mph 57 / 56°F 83% 1024 mb
Low level cloud: 1%
Mid level cloud: 51%
High level cloud: 7%
Most Significant Cloud Type: medium
53%
0.0 In
07:00

SSW
SSW

 10 / 15 mph 65 / 65°F 85% 1018 mb
Low level cloud: 79%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
82%
0.0 In
13:00

SSW
SSW

 13 / 22 mph 72 / 76°F 75% 1018 mb
Low level cloud: 87%
Mid level cloud: 6%
High level cloud: 97%
Most Significant Cloud Type: low
100%
0.0 In
19:00

SE
SE

 4 / 7 mph 70 / 70°F 86% 1025 mb
Low level cloud: 21%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
Tue 28
May		01:00

NE
NE

 2 / 4 mph 57 / 58°F 98% 1021 mb
Low level cloud: 66%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
07:00

SSW
SSW

 4 / 7 mph 64 / 64°F 98% 1013 mb
Low level cloud: 94%
Mid level cloud: 25%
High level cloud: 17%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NE
NE

 12 / 23 mph 57 / 55°F 92% 1017 mb
Low level cloud: 80%
Mid level cloud: 54%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
19:00

ENE
ENE

 6 / 13 mph 73 / 77°F 91% 1013 mb
Low level cloud: 62%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: low
71%
0.0 In
Wed 29
May		01:00

ENE
ENE

 11 / 20 mph 51 / 47°F 91% 1019 mb
Low level cloud: 85%
Mid level cloud: 43%
High level cloud: 5%
Most Significant Cloud Type: low
100%
0.3 In
07:00

ENE
ENE

 7 / 15 mph 62 / 62°F 90% 1015 mb
Low level cloud: 99%
Mid level cloud: 29%
High level cloud: 87%
Most Significant Cloud Type: low
100%
0.0 In
13:00

ENE
ENE

 12 / 23 mph 54 / 51°F 82% 1021 mb
Low level cloud: 99%
Mid level cloud: 43%
High level cloud: 68%
Most Significant Cloud Type: low
100%
0.0 In
19:00

ENE
ENE

 6 / 13 mph 60 / 60°F 99% 1011 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
Thu 30
May		01:00

NNE
NNE

 9 / 18 mph 47 / 43°F 99% 1019 mb
Low level cloud: 97%
Mid level cloud: 83%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.2 In
07:00

NE
NE

 5 / 10 mph 59 / 59°F 99% 1011 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NNE
NNE

 7 / 13 mph 50 / 47°F 98% 1017 mb
Low level cloud: 100%
Mid level cloud: 80%
High level cloud: 69%
Most Significant Cloud Type: low
100%
0.1 In
19:00

S
S

 7 / 14 mph 64 / 64°F 98% 1010 mb
Low level cloud: 88%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
89%
0.2 In
Fri 31
May		01:00

NE
NE

 3 / 6 mph 51 / 51°F 99% 1015 mb
Low level cloud: 97%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
07:00

S
S

 5 / 11 mph 67 / 67°F 86% 1014 mb
Low level cloud: 28%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.0 In
13:00

W
W

 2 / 3 mph 62 / 62°F 93% 1013 mb
Low level cloud: 89%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
90%
0.0 In
19:00

S
S

 7 / 15 mph 69 / 69°F 80% 1012 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
Sat 01
Jun		01:00

SSW
SSW

 3 / 7 mph 54 / 54°F 98% 1014 mb
Low level cloud: 7%
Mid level cloud: 21%
High level cloud: 20%
Most Significant Cloud Type: medium
41%
0.1 In
07:00

SSW
SSW

 6 / 12 mph 71 / 71°F 68% 1014 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 1%
Most Significant Cloud Type: medium
18%
0.0 In
13:00

S
S

 4 / 10 mph 75 / 77°F 46% 1014 mb
Low level cloud: 15%
Mid level cloud: 81%
High level cloud: 5%
Most Significant Cloud Type: medium
100%
0.1 In
19:00

SSW
SSW

 7 / 15 mph 68 / 68°F 71% 1014 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
Sun 02
Jun		01:00

SSW
SSW

 3 / 6 mph 55 / 55°F 96% 1016 mb
Low level cloud: 7%
Mid level cloud: 29%
High level cloud: 26%
Most Significant Cloud Type: medium
49%
0.0 In
07:00

S
S

 2 / 5 mph 71 / 71°F 79% 1015 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 46%
Most Significant Cloud Type: medium
14%
0.0 In
13:00

S
S

 4 / 8 mph 71 / 71°F 76% 1017 mb
Low level cloud: 39%
Mid level cloud: 43%
High level cloud: 21%
Most Significant Cloud Type: low
57%
0.1 In
19:00

S
S

 6 / 13 mph 66 / 65°F 84% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 16%
Most Significant Cloud Type: medium
6%
0.0 In
Mon 03
Jun		01:00

S
S

 4 / 9 mph 57 / 57°F 97% 1018 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 17%
Most Significant Cloud Type: medium
28%
0.2 In
07:00

ENE
ENE

 4 / 9 mph 61 / 61°F 98% 1018 mb
Low level cloud: 86%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
13:00

S
S

 11 / 22 mph 68 / 68°F 86% 1015 mb
Low level cloud: 83%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NE
NE

 3 / 6 mph 62 / 62°F 93% 1019 mb
Low level cloud: 80%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: low
82%
0.1 In
Tue 04
Jun		01:00

W
W

 9 / 19 mph 61 / 61°F 96% 1015 mb
Low level cloud: 23%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.1 In
07:00

WSW
WSW

 3 / 7 mph 70 / 70°F 76% 1021 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 6%
Most Significant Cloud Type: medium
16%
0.0 In
13:00

NW
NW

 13 / 28 mph 81 / 79°F 29% 1019 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
10%
0.0 In
19:00

SSW
SSW

 8 / 17 mph 69 / 69°F 75% 1020 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 8%
Most Significant Cloud Type: medium
14%
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