WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Thursday, 21-May-2026 06:00 pm
 
Tonight

Mostly Cloudy
Mostly Cloudy
Friday

Mostly Cloudy
Mostly Cloudy
Friday
night
Fog late
Fog late
Saturday

Fog a.m.
Fog a.m.
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Mostly Sunny
Mostly Sunny
Sunday
night
Clear
Clear
Monday

Sunny
Sunny
Low: 14° High: 21° Low: 10° High: 21° Low: 10° High: 24° Low: 10° High: 25°
               
S
9-22
mph
Fresh breeze
SSW
9-20
mph
Fresh breeze
SW
9-19
mph
Fresh breeze
SW
6-15
mph
Moderate breeze
S
3
mph
Light air
E→NNE
4
mph
Light breeze
ENE→SSE
3
mph
Light air
W
4
mph
Light breeze
UV: 3
 Medium 
UV: 6
 High 
UV: 7
 High 
UV: 7
 High 

 

Tonight
 
Mostly cloudy to cloudy in the evening, becoming cloudy after midnight. Low 14°. Wind south around 9 mph, gusting to 22 mph.
Friday
 
Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon. Mild. High 21°. UV index up to 3. Wind south-southwest around 9 mph, gusting to 20 mph.
Friday night
 
Cloudy in the evening, becoming partly cloudy after midnight. Patchy light fog after midnight. Low 10°. Wind southwest around 9 mph, gusting to 19 mph.
Saturday
 
Mostly sunny in the morning, becoming sunny in the afternoon. Patchy light fog in the morning. Mild. High 21°. UV index up to 6. Wind southwest around 6 mph, gusting to 15 mph.
Saturday night
 
Partly cloudy. Low 10°. Wind south around 3 mph.
Sunday
 
Partly to mostly sunny in the morning, becoming sunny in the afternoon. Unusually warm. High 24°. UV index up to 7. Wind east around 4 mph in the morning, becoming north-northeast in the afternoon.
Sunday night
 
Clear. Low 10°. Wind east-northeast around 3 mph in the evening, becoming south-southeast after midnight.
Monday
 
Sunny. Unusually warm. High 25°. UV index up to 7. Wind west around 4 mph.
Monday night
 
Clear in the evening, becoming mostly clear after midnight. Low 10°. Wind north around 2 mph in the evening, becoming east after midnight.
Tuesday
 
Mostly sunny. Unusually warm. High 25°. UV index up to 7. Wind northeast around 5 mph.
Tuesday night
 
Mostly clear in the evening, becoming fair after midnight. Low 11°. Wind northeast around 4 mph in the evening, becoming east-southeast around 9 mph after midnight.
Wednesday
 
Partly to mostly sunny. A chance of rain. Unusually warm. High 22°. UV index up to 6. Wind east-southeast around 10 mph, gusting to 17 mph. Chance of precipitation 30 percent. Precipitation mostly around 2 mm.
Wednesday night
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Low 12°. Wind east-southeast around 10 mph, gusting to 17 mph.

WXSIM forecast formatting script by Saratoga-Weather.org.
Animated forecast icons courtesy of www.meteotreviglio.com.