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

Chance rain
Chance rain
Saturday

Chance rain
Chance rain
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Partly Cloudy
Partly Cloudy
Sunday
night
Fog late
Fog late
Monday

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

Cloudy
Cloudy
Tuesday
night
Mostly Cloudy
Mostly Cloudy
Wednesday

Chance rain
Chance rain
<5 mm. 2 mm. <2 mm. <2 mm. <5 mm.
Low: 10° High: 16° Low: 9° High: 17° Low: 9° High: 20° Low: 13° High: 19° Low: 14° High: 20°
                   
N→WNW
4-18
mph
Moderate breeze
WNW
8-18
mph
Moderate breeze
WNW
7-17→3
mph
Moderate breeze
WNW→N
5
mph
Light breeze
NE→SE
3
mph
Light air
SE
7-17→10-20
mph
Fresh breeze
E
10-21
mph
Fresh breeze
E
14-22
mph
Fresh breeze
E
14-22
mph
Fresh breeze
ESE
12-18→7-16
mph
Moderate breeze
UV: 4
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 

 

Tonight
 
Partly cloudy. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Cool. Low 10°. Wind north around 4 mph, gusting to 18 mph, in the evening, becoming west-northwest after midnight. Chance of precipitation 40 percent. Precipitation mostly between 2 and 5 mm.
Saturday
 
Partly to mostly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. A chance of rain. High 16°. UV index up to 4. Wind west-northwest around 8 mph, gusting to 18 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Saturday night
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Cool. Low 9°. Wind west-northwest around 7 mph, gusting to 17 mph, in the evening, becoming 3 mph after midnight.
Sunday
 
Partly cloudy. A chance of rain. High 17°. UV index up to 4. Wind west-northwest around 5 mph in the morning, becoming north in the afternoon. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Sunday night
 
Fair to partly cloudy in the evening, becoming fair after midnight. Patchy light fog after midnight. Cool. Low 9°. Wind northeast around 3 mph in the evening, becoming southeast after midnight.
Monday
 
Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. High 20°. UV index up to 4. Wind southeast around 7 mph, gusting to 17 mph, in the morning, becoming 10 mph, gusting to 20 mph, in the afternoon.
Monday night
 
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Low 13°. Wind east around 10 mph, gusting to 21 mph.
Tuesday
 
Cloudy. Breezy. High 19°. UV index up to 3. Wind east around 14 mph, gusting to 22 mph.
Tuesday night
 
Mostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. A chance of rain. Breezy. Low 14°. Wind east around 14 mph, gusting to 22 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Partly to mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain. High 20°. UV index up to 3. Wind east-southeast around 12 mph, gusting to 18 mph, in the morning, becoming 7 mph, gusting to 16 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Wednesday night
 
Mostly cloudy to cloudy in the evening, becoming partly to mostly cloudy after midnight. Light to moderate fog in the evening, then patchy light fog after midnight. A chance of rain in the evening, then a slight chance of rain after midnight. Low 14°. Wind east-southeast around 6 mph, gusting to 18 mph, in the evening, becoming 12 mph, gusting to 20 mph, after midnight. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Thursday
 
Mostly cloudy to cloudy in the morning, becoming dense overcast in the afternoon. Patchy light fog. A chance of rain. High 17°. UV index up to 2. Wind south 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 12°. Wind northwest around 8 mph, gusting to 17 mph, in the evening, becoming 13 mph, gusting to 24 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.