WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Wednesday, 12-Aug-2026 11:00 am
 
This
afternoon
Partly Cloudy
Partly Cloudy
Tonight

Mostly Clear
Mostly Clear
Thursday

Partly Cloudy
Partly Cloudy
Thursday
night
Partly Cloudy
Partly Cloudy
Friday

Chance rain
Chance rain
Friday
night
Mostly Cloudy
Mostly Cloudy
Saturday

Mostly Cloudy
Mostly Cloudy
Saturday
night
Fog late
Fog late
2 mm. <2 mm. <2 mm.
High: 29° Low: 16° High: 28° Low: 16° High: 19° Low: 14° High: 18° Low: 12°
               
E
4
mph
Light breeze
SE→SSW
5
mph
Light breeze
NE→N
2→5-15
mph
Moderate breeze
SW
4
mph
Light breeze
WNW
7-17
mph
Moderate breeze
NW
6-15→10-18
mph
Moderate breeze
NW
10-19
mph
Fresh breeze
NW
8-17
mph
Moderate breeze
UV: 5
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 
UV: 4
 Medium 

 

This afternoon
 
Fair to partly cloudy. Near record warmth. High 29°. UV index up to 5. Wind east around 4 mph.
Tonight
 
Fair in the evening, becoming mostly clear after midnight. Low 16°. Wind southeast around 5 mph in the evening, becoming south-southwest after midnight.
Thursday
 
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Near record warmth. High 28°. UV index up to 4. Wind northeast around 2 mph in the morning, becoming north around 5 mph, gusting to 15 mph, in the afternoon.
Thursday night
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Low 16°. Wind southwest around 4 mph.
Friday
 
Cloudy. A chance of rain in the morning, then a slight chance of rain in the afternoon. High 19°. UV index up to 3. Wind west-northwest around 7 mph, gusting to 17 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday night
 
Cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 14°. Wind northwest around 6 mph, gusting to 15 mph, in the evening, becoming 10 mph, gusting to 18 mph, after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly to mostly cloudy. A chance of rain. High 18°. UV index up to 4. Wind northwest around 10 mph, gusting to 19 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday night
 
Partly to mostly cloudy in the evening, becoming fair to partly cloudy after midnight. Patchy light fog after midnight. Low 12°. Wind northwest around 8 mph, gusting to 17 mph.
Sunday
 
Mostly cloudy in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 18°. UV index up to 4. Wind northwest around 6 mph.
Sunday night
 
Fair to partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 11°. Wind northwest around 2 mph in the evening, becoming south-southwest after midnight.
Monday
 
Mostly cloudy to cloudy in the morning, becoming dense overcast in the afternoon. Light to moderate fog in the afternoon. A chance of rain in the morning, then rain likely in the afternoon. High 15°. UV index up to 2. Wind south around 5 mph. Chance of precipitation 70 percent. Precipitation mostly between 10 and 20 mm.
Monday night
 
Cloudy. Light to moderate fog in the evening, then patchy light fog after midnight. A chance of rain. Low 14°. Wind south-southeast around 7 mph in the evening, becoming west around 13 mph, gusting to 25 mph, after midnight. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 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. Windy. High 17°. UV index up to 3. Wind west around 21 mph, gusting to 28 mph, in the morning, becoming 15 mph, gusting to 24 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Tuesday night
 
Mostly cloudy in the evening, becoming dense overcast after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Breezy. Low 12°. Wind northwest around 13 mph, gusting to 22 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.

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