WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Friday, 21-Aug-2026 09:00 pm
 
Tonight

Fog late
Fog late
Saturday

Fog a.m.
Fog a.m.
Saturday
night
Fog late
Fog late
Sunday

Fog a.m.
Fog a.m.
Sunday
night
Fog late
Fog late
Monday

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

Cloudy
Cloudy
<2 mm. <2 mm. <2 mm.
Low: 11° High: 17° Low: 9° High: 17° Low: 10° High: 19° Low: 13° High: 18°
               
NW
3
mph
Light air
WNW
7-18
mph
Moderate breeze
WNW
5-17
mph
Moderate breeze
WNW→N
5
mph
Light breeze
NNE→SSE
3
mph
Light air
SE
6-16→10-19
mph
Fresh breeze
ESE
8-17
mph
Moderate breeze
ESE
9-19
mph
Fresh breeze
UV: 4
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 

 

Tonight
 
Partly cloudy. Patchy light fog after midnight. A slight chance of rain. Low 11°. Wind northwest around 3 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly to mostly cloudy in the morning, becoming sunny in the afternoon. Patchy light fog in the morning. A slight chance of rain in the morning. High 17°. UV index up to 4. Wind west-northwest around 7 mph, gusting to 18 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday night
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Patchy light fog after midnight. Cool. Low 9°. Wind west-northwest around 5 mph, gusting to 17 mph.
Sunday
 
Partly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. High 17°. UV index up to 4. Wind west-northwest around 5 mph in the morning, becoming north in the afternoon.
Sunday night
 
Fair to partly cloudy. Patchy light fog after midnight. Cool. Low 10°. Wind north-northeast around 3 mph in the evening, becoming south-southeast after midnight.
Monday
 
Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. High 19°. UV index up to 4. Wind southeast around 6 mph, gusting to 16 mph, in the morning, becoming 10 mph, gusting to 19 mph, in the afternoon.
Monday night
 
Partly to mostly cloudy in the evening, becoming cloudy after midnight. Low 13°. Wind east-southeast around 8 mph, gusting to 17 mph.
Tuesday
 
Cloudy. A slight chance of rain in the morning. High 18°. UV index up to 3. Wind east-southeast around 9 mph, gusting to 19 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Mostly cloudy to cloudy. Low 15°. Wind east-southeast around 9 mph, gusting to 17 mph.
Wednesday
 
Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain in the afternoon. Mild. High 22°. UV index up to 3. Wind east-southeast around 9 mph, gusting to 18 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday night
 
Mostly cloudy. Light to moderate fog. Rain likely. Low 14°. Wind east-southeast around 6 mph. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Thursday
 
Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon. Light to moderate fog in the morning, then patchy light fog in the afternoon. A chance of rain. High 19°. UV index up to 3. Wind east-southeast around 6 mph, gusting to 15 mph, in the morning, becoming north in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Thursday night
 
Dense overcast. Patchy light fog. Rain very likely. Low 13°. Wind north-northwest around 8 mph, gusting to 18 mph, in the evening, becoming west-northwest around 13 mph, gusting to 25 mph, after midnight. Chance of precipitation 80 percent. Precipitation mostly around 20 mm.

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