WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Thursday, 20-Aug-2026 09:00 pm
 
Tonight

Rain likely
Rain likely
Friday

Chance rain
Chance rain
Friday
night
Fog late
Fog late
Saturday

Chance rain
Chance rain
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.
7 mm. <5 mm. <2 mm. 2 mm.
Low: 11° High: 14° Low: 10° High: 16° Low: 10° High: 17° Low: 10° High: 20°
               
NNW
8-16→3
mph
Moderate breeze
NNW
2→6-15
mph
Moderate breeze
NNW
4
mph
Light breeze
WNW
8-17
mph
Moderate breeze
WNW
6-17
mph
Moderate breeze
NW
5
mph
Light breeze
NE→SE
4
mph
Light breeze
SSE→ESE
7-16
mph
Moderate breeze
UV: 3
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 

 

Tonight
 
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. Rain likely. Low 11°. Wind north-northwest around 8 mph, gusting to 16 mph, in the evening, becoming 3 mph after midnight. Chance of precipitation 60 percent. Precipitation mostly between 5 and 10 mm.
Friday
 
Mostly cloudy to cloudy in the morning, becoming mostly cloudy in the afternoon. Patchy light fog. A chance of rain. Cool. High 14°. UV index up to 3. Wind north-northwest around 2 mph in the morning, becoming 6 mph, gusting to 15 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Friday night
 
Partly cloudy. Patchy light fog in the evening, then light to moderate fog after midnight. A chance of rain. Cool. Low 10°. Wind north-northwest around 4 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly to mostly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Light to moderate fog in the morning. A chance of rain. High 16°. UV index up to 4. Wind west-northwest around 8 mph, gusting to 17 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Saturday night
 
Fair to partly cloudy. Patchy light fog after midnight. Cool. Low 10°. Wind west-northwest around 6 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 northwest around 5 mph.
Sunday night
 
Fair to partly cloudy. Patchy light fog after midnight. Cool. Low 10°. Wind northeast around 4 mph in the evening, becoming southeast after midnight.
Monday
 
Sunny in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 20°. UV index up to 4. Wind south-southeast around 7 mph, gusting to 16 mph, in the morning, becoming east-southeast in the afternoon.
Monday night
 
Partly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A slight chance of rain after midnight. Low 13°. Wind east-southeast around 10 mph, gusting to 18 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Tuesday
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. A chance of rain in the morning, then a slight chance of rain in the afternoon. Breezy. High 19°. UV index up to 3. Wind east-southeast around 12 mph, gusting to 21 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Tuesday night
 
Cloudy in the evening, becoming dense overcast after midnight. Patchy light fog after midnight. Rain likely. Low 15°. Wind southeast around 9 mph, gusting to 18 mph. Chance of precipitation 60 percent. Precipitation mostly between 2 and 5 mm.
Wednesday
 
Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon. Patchy light fog in the morning, then moderate fog in the afternoon. Rain likely. High 20°. UV index up to 3. Wind south around 11 mph, gusting to 21 mph, in the morning, becoming 8 mph, gusting to 22 mph, in the afternoon. Chance of precipitation 60 percent. Precipitation mostly between 5 and 10 mm.
Wednesday night
 
Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Moderate fog in the evening, then light to moderate fog after midnight. A chance of rain. Low 15°. Wind south around 4 mph in the evening, becoming east-southeast after midnight. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.

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