Winter Sky by David Packman  
Online since February 2006  
  

 
 
 
WXSim Local Weather Forecast
   
This local weather forecast was created using WXSim weather simulator software, and is normally updated every hour at 15 minutes past the hour. It is provided to give a guide as to what weather conditions may be experienced locally, and is most accurate for the first 48 hours.
WXSIM Forecast for: Winchester
Issued by: winchesterweather.org.uk
Updated: Wednesday, 19-Aug-2026 06:00 am
 
Today

Chance rain
Chance rain
Tonight

Fog late
Fog late
Thursday

Fog a.m.
Fog a.m.
Thursday
night
Fog late
Fog late
Friday

Fog a.m.
Fog a.m.
Friday
night
Mostly Cloudy
Mostly Cloudy
Saturday

Partly Cloudy
Partly Cloudy
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Sunny
Sunny
Sunday
night
Mostly Clear
Mostly Clear
Monday

Mostly Cloudy
Mostly Cloudy
Monday
night
Cloudy
Cloudy
Tuesday

Rain likely
Rain likely
Tuesday
night
Chance rain
Chance rain
Wednesday

Rain likely
Rain likely
Wednesday
night
Cloudy
Cloudy
Thursday

Mostly Cloudy
Mostly Cloudy
Thursday
night
Mostly Cloudy
Mostly Cloudy
<5 mm. <2 mm. <2 mm. <2 mm. 15 mm. <2 mm. 10 mm. <2 mm. <2 mm. <2 mm.
High: 23° Low: 12° High: 18° Low: 10° High: 21° Low: 10° High: 22° Low: 9° High: 23° Low: 10° High: 23° Low: 16° High: 20° Low: 15° High: 17° Low: 15° High: 20° Low: 11°
                                   
SW
6→10-20
mph
Fresh breeze
W
8-19
mph
Fresh breeze
W
10-20
mph
Fresh breeze
NW
7-15
mph
Moderate breeze
NNW
7-16
mph
Moderate breeze
NE
5
mph
Light breeze
NE→S
4
mph
Light breeze
SW→NNW
4
mph
Light breeze
NNE
4
mph
Light breeze
SSE→ENE
4
mph
Light breeze
ENE
10-21→14-21
mph
Fresh breeze
ENE
13-20
mph
Fresh breeze
E
12-20
mph
Fresh breeze
E→WSW
6-17
mph
Moderate breeze
SW
12-19
mph
Fresh breeze
SSW
6
mph
Light breeze
W
9-18→12-20
mph
Fresh breeze
W
5-16
mph
Moderate breeze
UV: 4
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 

 

Today
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. A chance of rain. High 23°. Wind southwest around 6 mph in the morning, becoming 10 mph, gusting to 20 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Tonight
 
Clear in the evening, becoming fair after midnight. Light to moderate fog in the evening, then moderate fog after midnight. Low 12°. Wind west around 8 mph, gusting to 19 mph.
Thursday
 
Partly cloudy in the morning, becoming cloudy in the afternoon. Moderate fog in the morning. A slight chance of rain. High 18°. Wind west around 10 mph, gusting to 20 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Thursday night
 
Fair to partly cloudy in the evening, becoming mostly clear after midnight. Patchy light fog after midnight. A slight chance of rain. Cool. Low 10°. Wind northwest around 7 mph, gusting to 15 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Friday
 
Partly to mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. High 21°. UV index up to 4. Wind north-northwest around 7 mph, gusting to 16 mph.
Friday night
 
Partly to mostly cloudy in the evening, becoming fair after midnight. Cool. Low 10°. Wind northeast around 5 mph.
Saturday
 
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. High 22°. Wind northeast around 4 mph in the morning, becoming south in the afternoon.
Saturday night
 
Partly cloudy in the evening, becoming clear after midnight. Cool. Low 9°. Wind southwest around 4 mph in the evening, becoming north-northwest after midnight.
Sunday
 
Sunny. High 23°. UV index up to 4. Wind north-northeast around 4 mph.
Sunday night
 
Mostly clear in the evening, becoming fair after midnight. Low 10°. Wind south-southeast around 4 mph in the evening, becoming east-northeast after midnight.
Monday
 
Partly to mostly sunny in the morning, becoming mostly cloudy in the afternoon. Breezy. High 23°. UV index up to 4. Wind east-northeast around 10 mph, gusting to 21 mph, in the morning, becoming 14 mph, gusting to 21 mph, in the afternoon.
Monday night
 
Cloudy in the evening, becoming dense overcast after midnight. A slight chance of rain after midnight. Breezy. Low 16°. Wind east-northeast around 13 mph, gusting to 20 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Tuesday
 
Dense overcast in the morning, becoming mostly cloudy to cloudy in the afternoon. Rain likely in the morning, then a chance of rain in the afternoon. Breezy. High 20°. Wind east around 12 mph, gusting to 20 mph. Chance of precipitation 80 percent. Precipitation mostly between 10 and 20 mm.
Tuesday night
 
Mostly cloudy to cloudy in the evening, becoming dense overcast after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 15°. Wind east around 6 mph, gusting to 17 mph, in the evening, becoming west-southwest after midnight. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Dense overcast. Rain likely in the morning, then a chance of rain in the afternoon. Breezy. High 17°. Wind southwest around 12 mph, gusting to 19 mph. Chance of precipitation 80 percent. Precipitation mostly around 10 mm.
Wednesday night
 
Dense overcast in the evening, becoming cloudy after midnight. A slight chance of rain. Low 15°. Wind south-southwest around 6 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Thursday
 
Mostly cloudy to cloudy in the morning, becoming mostly cloudy in the afternoon. A slight chance of rain. High 20°. Wind west around 9 mph, gusting to 18 mph, in the morning, becoming 12 mph, gusting to 20 mph, in the afternoon. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Thursday night
 
Mostly cloudy in the evening, becoming clear after midnight. A slight chance of rain. Low 11°. Wind west around 5 mph, gusting to 16 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.

WXSIM forecast formatting script by Saratoga-Weather.org.

 
 
 
 
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Never base important decisions or events on data from this private weather station, which is offered as a general guide to local conditions only. Thankyou.