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Sully Weather Forecast

Temperature, wind, rain and more for Sully

The Vale Of Glamorgan, United Kingdom

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 20
Sep		18:00

NW
NW

 28 / 41 mph 54 / 47°F 86% 1003 mb
Low level cloud: 11%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

W
W

 14 / 23 mph 52 / 48°F 86% 1010 mb
Low level cloud: 5%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 21
Sep		00:00

WNW
WNW

 6 / 10 mph 51 / 49°F 89% 1012 mb
Low level cloud: 4%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 2 / 4 mph 50 / 50°F 89% 1014 mb
Low level cloud: 48%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

 10 / 14 mph 51 / 47°F 84% 1016 mb
Low level cloud: 96%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 14 / 19 mph 50 / 45°F 81% 1019 mb
Low level cloud: 95%
Mid level cloud: 86%
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

NE
NE

 13 / 15 mph 56 / 52°F 58% 1020 mb
Low level cloud: 28%
Mid level cloud: 72%
High level cloud: 0%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 14 / 17 mph 58 / 54°F 50% 1021 mb
Low level cloud: 3%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 12 / 20 mph 52 / 48°F 61% 1023 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

 14 / 27 mph 47 / 42°F 64% 1025 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for Sully:

Over the next 7 days the Sully forecast suggests the average daytime maximum temperature will be around 16°C, with a high for the week of 18°C expected on the afternoon of Saturday 27th. The mean minimum temperature will be 8°C, dipping to its lowest on the morning of Monday 22nd at 6°C. The week will have mostly dry days although Saturday is likely to see a significant amount of rain. Predictions are Saturday 22nd will have the most precipitation with an accumulation of around 8.0mm. On the whole winds are likely to be moderate. Expect the strongest wind on Saturday evening, coming from a north westerly direction, and reaching around 29mph.

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