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Updated Live on: 21/05/2025 21:20 - 
Summary / Temperature Wind Rain / Melted Snow Outlook
mostly clear

Currently 12.1°C, Max: 17.9°C, Min: 10.7°C 12.1°C Colder 0.9°C than last hour

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Feels like:  12°C

24-hr Difference
-5.9°CColder 5.9°C than yesterday at this time
Records Today Yesterday
Highs: 17.9°C
16:04
23.0°C
15:38
Lows: 10.7°C
06:55
7.3°C
05:13
 Calm W
0.0

Gusting: 0.0 mph
0 Bft - Calm
Max Today: 8.5 at 17:37
Gust Month: 16.1 mph on May 10
Rain Today: 3.2 mm
Last Rain at: 16:46
Rate (mm/hr): 0.0 mm
Yesterday: 0.0 mm
May: 3.2 mm
Rain this Year: 226.4 mm
1 rain day this May
Tonight
Clear
Clear
7°C
Barometer Humidity / Dew Point Moon
Current: 1018.0 mb Rising 2 °C/hr
1-Hour Trend: Rising
3-Hour Trend: Rising rapidly
High: 1019.0  | Low: 1015.0
Humidity: 95 % Increased 3% since last hour
Humidex: 14.0°C
Dew Point: 11.3°C Decreased 0.4°C since last hour
Wet Bulb: 11.7°C
Waning Crescent
Waning Crescent, Moon at 23 days in cycle
35%
Illuminated
UVI Forecast Solar Information
21/05/2025   Medium   5.5   
22/05/2025   Medium   5.8   
23/05/2025   Medium   5.6   
Sunrise is at: 05:07
Solar Noon at: 13:02
Sunset is at: 20:57
Wind Chill Heating Degree Days Sun
Current: 12.1°C
Today: 10.2°C  at 06:55
Yesterday: 6.6°C
Last Week: 6.3°C
Record: -13.3°C   01/03/2018
Today: 4.2
May: 94.1
2025 to Date: 1370.5
Cooling Degree Days
2025 to Date: 0.7
Daylight: 15:50:00
+ 00:02:35
Almanac Outside Now Station All Time Records Fire Risk
Sunrise is at: 05:07
Sunset is at: 20:57
Moonrise is at: 02:46
Moonset is at: 13:29
Cloud Height: 425 ft
Wed 21 May
High Tide: 0541 3.9
Low Tide: 1206 1.7
High Tide: 1822 4.1
Air Density: 1.237 kg/m3
New Moon: 27 April 2025
Full Moon: 12 May 2025
Server Data
Sys Version: 10.37R-(b79)
Free Memory: 1049MB
Server Temp: 20.2°C
Sys Check: 00:20
Sys Reset: 1 Days 9 Hours 12 Minutes 28 Seconds
Highs: Lows:
35.2°C on:
19/07/2022
-8.2°C on:
10/01/2009
Avg Daytime Records
  29.2°C on: 19 Jul 2022   -4.0°C on: 01 Mar 2018
Avg Night Time Records
  24.8°C on: 20 Jul 2016   -6.1°C on: 10 Jan 2009
Soton & New Forest Fire Index
Currently:
-1.8 at 21:20


Tomorrow's and Tomorrow night's Outlook for the Southampton Area
Tomorrow
PM Showers
PM Showers
19°C
Partly cloudy in the morning. Increasing clouds with periods of showers later in the day. High 19C. Winds ESE at 5 to 10 mph. Chance of rain 40%.
Tomorrow night
Clouds Early, Clearing Late
Clouds Early, Clearing Late
7°C
Cloudy skies early, followed by partial clearing. Low 7C. Winds ENE at 5 to 10 mph.
Short Term Weather Forecast for the Southampton Area
Tomorrow night
Clouds Early, Clearing Late
Clouds Early, Clearing Late
7°C
Friday
Mostly Cloudy
Mostly Cloudy
17°C
Friday night
Light Rain Late
Light Rain Late
13°C
Saturday
Showers
Showers
19°C
Saturday night
Showers
Showers
13°C
Sunday
Partly Cloudy
Partly Cloudy
18°C