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The Folly Weather Forecast

Temperature, wind, rain and more for The Folly

Hertfordshire, United Kingdom

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Wed 24
Apr		09:00

N
N

 14 / 17 mph 45 / 38°F 60% 1017 mb
Low level cloud: 100%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

 13 / 16 mph 45 / 38°F 63% 1017 mb
Low level cloud: 51%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

 12 / 15 mph 46 / 41°F 63% 1015 mb
Low level cloud: 71%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

 8 / 11 mph 46 / 41°F 71% 1015 mb
Low level cloud: 22%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

 3 / 4 mph 41 / 39°F 86% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 25
Apr		00:00

SW
SW

 3 / 7 mph 36 / 34°F 87% 1013 mb
Low level cloud: 29%
Mid level cloud: 11%
High level cloud: 31%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 7 / 14 mph 37 / 31°F 82% 1010 mb
Low level cloud: 4%
Mid level cloud: 9%
High level cloud: 75%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 9 / 15 mph 41 / 35°F 77% 1008 mb
Low level cloud: 6%
Mid level cloud: 32%
High level cloud: 99%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 10 / 12 mph 47 / 42°F 62% 1006 mb
Low level cloud: 1%
Mid level cloud: 24%
High level cloud: 38%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 13 / 16 mph 49 / 44°F 64% 1004 mb
Low level cloud: 78%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 11 / 13 mph 49 / 44°F 75% 1003 mb
Low level cloud: 46%
Mid level cloud: 44%
High level cloud: 80%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

 3 / 4 mph 47 / 46°F 85% 1003 mb
Low level cloud: 29%
Mid level cloud: 90%
High level cloud: 41%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 7 / 11 mph 42 / 38°F 94% 1004 mb
Low level cloud: 85%
Mid level cloud: 51%
High level cloud: 36%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for The Folly:

Reviewing the forecast for The Folly Over the next 7 days and the average daytime maximum temperature will be around 13°C, with a high for the week of 16°C expected on the afternoon of Wednesday 1st. The mean minimum temperature will be 6°C, dipping to its lowest on the morning of Thursday 25th at 2°C. The week will have some days seeing a little precipitation and some days with rain. Current predictions suggest Monday 25th will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be moderate.

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