WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Saturday, 22-Aug-2026 09:00 pm
 
Tonight

Partly Cloudy
Partly Cloudy
Sunday

Mostly Sunny
Mostly Sunny
Sunday
night
Fog late
Fog late
Monday

Fog a.m.
Fog a.m.
Monday
night
Mostly Cloudy
Mostly Cloudy
Tuesday

Mostly Cloudy
Mostly Cloudy
Tuesday
night
Overcast
Overcast
Wednesday

Chance rain
Chance rain
Wednesday
night
Chance rain
Chance rain
Thursday

Rain likely
Rain likely
<2 mm. <5 mm. 2 mm. <5 mm.
Low: 9° High: 18° Low: 9° High: 19° Low: 13° High: 19° Low: 15° High: 19° Low: 15° High: 19°
                   
NW
5
mph
Light breeze
NW→N
4
mph
Light breeze
NE→SSE
3
mph
Light air
SE
9-19
mph
Fresh breeze
ESE
9-19
mph
Fresh breeze
ESE
12-22
mph
Fresh breeze
ESE
11-18→7-16
mph
Moderate breeze
SE
5→2
mph
Light breeze
SE
2
mph
Light air
SE
9-16→5
mph
Moderate breeze
UV: 4
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 

 

Tonight
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Cool. Low 9°. Wind northwest around 5 mph.
Sunday
 
Partly to mostly sunny. High 18°. UV index up to 4. Wind northwest around 4 mph in the morning, becoming north in the afternoon.
Sunday night
 
Mostly clear in the evening, becoming clear after midnight. Patchy light fog after midnight. Cool. Low 9°. Wind northeast around 3 mph in the evening, becoming south-southeast after midnight.
Monday
 
Sunny in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. High 19°. UV index up to 4. Wind southeast around 9 mph, gusting to 19 mph.
Monday night
 
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Low 13°. Wind east-southeast around 9 mph, gusting to 19 mph.
Tuesday
 
Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Breezy. High 19°. UV index up to 3. Wind east-southeast around 12 mph, gusting to 22 mph.
Tuesday night
 
Dense overcast. A chance of rain. Low 15°. Wind east-southeast around 11 mph, gusting to 18 mph, in the evening, becoming 7 mph, gusting to 16 mph, after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain. High 19°. UV index up to 3. Wind southeast around 5 mph in the morning, becoming 2 mph in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Wednesday night
 
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Low 15°. Wind southeast around 2 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Thursday
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. Patchy light fog in the morning. Rain likely. High 19°. UV index up to 3. Wind southeast around 9 mph, gusting to 16 mph, in the morning, becoming 5 mph in the afternoon. Chance of precipitation 60 percent. Precipitation mostly between 2 and 5 mm.
Thursday night
 
Cloudy. Patchy light fog in the evening, then light to moderate fog after midnight. A chance of rain. Precipitation showery or intermittent. Low 15°. Wind northeast near calm in the evening, becoming west-southwest after midnight. Chance of precipitation 50 percent. Precipitation mostly around 2 mm.
Friday
 
Cloudy. Light to moderate fog in the morning, then patchy light fog in the afternoon. A chance of rain. High 17°. UV index up to 2. Wind west-southwest around 7 mph, gusting to 17 mph. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Friday night
 
Dense overcast. Patchy light fog. Rain likely. Low 13°. Wind northwest around 8 mph, gusting to 16 mph, in the evening, becoming 11 mph, gusting to 20 mph, after midnight. Chance of precipitation 60 percent. Precipitation mostly between 2 and 5 mm.

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