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 05:00 pm
 
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

Mostly Cloudy
Mostly Cloudy
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Sunny
Sunny
Sunday
night
Partly Cloudy
Partly Cloudy
Monday

Partly Cloudy
Partly Cloudy
Monday
night
Mostly Cloudy
Mostly Cloudy
Tuesday

Cloudy
Cloudy
Tuesday
night
Rain likely
Rain likely
Wednesday

Rain likely
Rain likely
Wednesday
night
Mostly Cloudy
Mostly Cloudy
Thursday

Chance rain
Chance rain
Thursday
night
Fog late
Fog late
<2 mm. <2 mm. <2 mm. <2 mm. 7 mm. 10 mm. <2 mm. <5 mm. <2 mm.
Low: 12° High: 19° Low: 10° High: 21° Low: 11° High: 22° Low: 9° High: 23° Low: 10° High: 23° Low: 15° High: 22° Low: 14° High: 20° Low: 14° High: 20° Low: 11°
                                 
WSW
7-20
mph
Fresh breeze
WSW
9-20→12-20
mph
Fresh breeze
NNW
7-17
mph
Moderate breeze
N
6-16
mph
Moderate breeze
NE
5
mph
Light breeze
NE→NW
4
mph
Light breeze
WNW→N
4
mph
Light breeze
N
6
mph
Light breeze
SSE→ENE
3
mph
Light air
ENE
10-20→13-20
mph
Fresh breeze
ENE
11-20
mph
Fresh breeze
NNE
10-18
mph
Moderate breeze
N→WNW
4
mph
Light breeze
W
7-17→13-21
mph
Fresh breeze
W
3
mph
Light air
NNW
2→5
mph
Light breeze
NNW
5
mph
Light breeze
UV: 5
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 

 

Tonight
 
Clear. Moderate fog after midnight. Low 12°. Wind west-southwest around 7 mph, gusting to 20 mph.
Thursday
 
Partly cloudy in the morning, becoming cloudy in the afternoon. Moderate fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. Precipitation showery or intermittent. High 19°. Wind west-southwest around 9 mph, gusting to 20 mph, in the morning, becoming 12 mph, gusting to 20 mph, in the afternoon. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Thursday night
 
Fair to partly cloudy in the evening, becoming mostly clear after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. A slight chance of rain. Low 10°. Wind north-northwest around 7 mph, gusting to 17 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Friday
 
Partly to mostly sunny in the morning, becoming mostly cloudy in the afternoon. Light to moderate fog in the morning. High 21°. Wind north around 6 mph, gusting to 16 mph.
Friday night
 
Mostly cloudy. Low 11°. Wind northeast around 5 mph.
Saturday
 
Partly to mostly sunny in the morning, becoming mostly cloudy in the afternoon. High 22°. Wind northeast around 4 mph in the morning, becoming northwest in the afternoon.
Saturday night
 
Fair to partly cloudy in the evening, becoming clear after midnight. Cool. Low 9°. Wind west-northwest around 4 mph in the evening, becoming north after midnight.
Sunday
 
Sunny. High 23°. UV index up to 5. Wind north around 6 mph.
Sunday night
 
Clear in the evening, becoming fair to partly cloudy after midnight. Low 10°. Wind south-southeast around 3 mph in the evening, becoming east-northeast after midnight.
Monday
 
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. Breezy. High 23°. UV index up to 4. Wind east-northeast around 10 mph, gusting to 20 mph, in the morning, becoming 13 mph, gusting to 20 mph, in the afternoon.
Monday night
 
Partly to mostly cloudy in the evening, becoming cloudy after midnight. A slight chance of rain after midnight. Low 15°. Wind east-northeast around 11 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 cloudy in the afternoon. A slight chance of rain. High 22°. Wind north-northeast around 10 mph, gusting to 18 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Cloudy in the evening, becoming dense overcast after midnight. Rain likely after midnight. Precipitation showery or intermittent. Low 14°. Wind north around 4 mph in the evening, becoming west-northwest after midnight. Chance of precipitation 70 percent. Precipitation mostly between 5 and 10 mm.
Wednesday
 
Dense overcast in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. Rain likely in the morning, then a slight chance of rain in the afternoon. High 20°. UV index up to 4. Wind west around 7 mph, gusting to 17 mph, in the morning, becoming 13 mph, gusting to 21 mph, in the afternoon. Chance of precipitation 70 percent. Precipitation mostly around 10 mm.
Wednesday night
 
Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A slight chance of rain. Low 14°. Wind west around 3 mph. Chance of precipitation less than 20 percent. Precipitation mostly less than 2 mm.
Thursday
 
Cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Precipitation showery or intermittent. High 20°. Wind north-northwest around 2 mph in the morning, becoming 5 mph in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Thursday night
 
Fair in the evening, becoming clear after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. A slight chance of rain. Low 11°. Wind north-northwest around 5 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.

WXSIM forecast formatting script by Saratoga-Weather.org.

 
 
 
 
Forecast
 
Trends
             
 
 
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.