Yellow warning of thunderstorm affecting London & South East England: Bracknell Forest, Brighton and Hove, Buckinghamshire, East Sussex, Greater London, Hampshire, Isle of Wight, Kent, Medway, Milton Keynes, Oxfordshire, Portsmouth, Reading, Slough, Southampton, Surrey, West Berkshire, West Sussex, Windsor and Maidenhead, Wokingham valid from 0200 Mon 21 Jul to 2000 Mon 21 Jul
Yellow warning of thunderstorm affecting London & South East England: Buckinghamshire, Milton Keynes, Oxfordshire valid from 1000 Mon 21 Jul to 2000 Mon 21 Jul
Which is 2 min 25 sec shorter than yesterday (Noon)(Midnight)
Sunrise:05:11
Sunset:21:09
Waning Crescent
23%
Illuminated
Humidity
Barometer
Current:
71%
Last Hour:
0%
High 05:39:
89%
Low 12:14:
70%
Record High:
100%
22-Nov-2011
Record Low:
0%
5-Dec-2020
Current:
1016.8hPa
Last Hour:
Steady
High 00:36:
1017.6 hPa
Low 03:49:
1016.6 hPa
Record High:
1049.5hPa
20-Jan-2020
Record Low:
953.8hPa
2-Nov-2023
Cooling Degree Days
Tide
Heat Index
Fire Risk4
Today:
1.1
Jul:
21.6
2025 to Date:
142.0
Heating Degree Days
2025 to Date:
663.5
6 hours, 45 minutes to high tide at 08:01 PM BST
Current:
25.2°C
High 12:19:00:
25.2°C
Yesterday:
25.9°C
Record:
34.2°C
8-Aug-2020
Current
Fire Weather Index:
Today: 8.3
Current UV Index
Current Solar Energy9
4.2
Sunburn in
27 Minutes
Highest:
12:17 5.5
923 W/m2 100% W/m2⇒ SISolar % ⇒ SI
High Today:
12:16 998 W/m2 Record: 2016 W/m2
Soil Conditions8
Irrigation Index5
Station All Time Records
Cloud Level
10 cm:
200.0 cb | 27°C°C
20 cm:
200.0 cb | 22°C
30 cm:
200.0 cb | 21°C
50 cm:
46.0 cb | 20°C
Growing conditions
at the depth of:
10 cm:
Soil moisture range is from
0-Wet to 200-Dry/Frozen
Updated at Midnight
Current ET:
2.50mm
7-Days Rain:
3.20mm
7-Days ET:
38.20mm
7-Day:
-35.00 mm
July:
-111.50 mm
2025:
-271.50 mm
Grass Temperature
Grass Temperature:
16.1°C
Grass Maximum:
-100.0°C at 00:00
Grass Minimum:
100.0°C at 13:53
HIGHS:
LOWS:
32.7°C
11-Aug-2022
-24.9°C
3-Mar-2011
Daytime Records
30.8°C 09-Aug-2020
-5.1°C 04-Feb-2012
Nighttime Records
25.9°C 10-Aug-2020
-3.2°C 01-Mar-2018
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1 Rain season: Jan 1st to Dec 31st.
4 Updated at 12pm.
5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).
7 Leaf Wetness is surface moisture on foliage. 0 being totally dry and 15 being totally saturated.
8 Soil moisture and temperatures are from sensors burried in the ground at the levels specified.
9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station’s recorded maximum or a percentage of computed theoretical solar maximum using the station’s location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.
10 Historical average to day 20 of July- for this station since 2012.
11 Historical average rain this season to day 20 of July- for this station since 2012.
12 The Feels Like temperature is derived from the Temperature, Humidity, Solar and Wind values recorded by the weather station.
WXSIM Weather Forecast -
Outlook Today & Tonight
Today
Mostly Cloudy High: 25°C
WXSIM forecast: Partly to mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Breezy with near record warmth. High 25°C. UV index up to 5. Wind west around 11 mph, gusting to 20 mph. Local station forecast:Increasing clouds with little temp change, precipitation possible within 24 to 48 hrs.
Tonight
Mostly Cloudy Low: 16°C
WXSIM forecast: Mostly cloudy to cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 16°C. Wind west around 5 mph, gusting to 17 mph.
WXSIM Short Term Weather Forecast
Friday
Mostly Cloudy
Friday night
Mostly Cloudy
Saturday
Mostly Cloudy
Saturday night
Chance of rain
Sunday
Chance of rain
Sunday night
Rain likely
Monday
Chance of rain
High: 26°C
Low: 16°C
High: 26°C
Low: 16°C
High: 22°C
Low: 15°C
High: 20°C
- Script by: Scott of BurnsvilleWeatherLIVE.com
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