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

Mostly Cloudy
Mostly Cloudy
Thursday

Chance rain
Chance rain
Thursday
night
Chance rain
Chance rain
Friday

Fog a.m.
Fog a.m.
Friday
night
Partly Cloudy
Partly Cloudy
Saturday

Rain likely
Rain likely
Saturday
night
Rain likely
Rain likely
Sunday

Fog a.m.
Fog a.m.
<2 mm. 2 mm. <2 mm. 5 mm. 15 mm.
Low: 11° High: 16° Low: 12° High: 16° Low: 12° High: 18° Low: 15° High: 19°
               
SW
6
mph
Light breeze
SW
10-20→14-22
mph
Fresh breeze
SW→W
10-19
mph
Fresh breeze
W
9-18
mph
Moderate breeze
SSW
4→9-19
mph
Fresh breeze
SSW
18-26
mph
Strong breeze
SW
15-24→9-17
mph
Fresh breeze
WSW
6
mph
Light breeze
UV: 2
 Low 
UV: 3
 Medium 
UV: 2
 Low 
UV: 3
 Medium 

 

Tonight
 
Mostly cloudy. Low 11°. Wind southwest around 6 mph.
Thursday
 
Cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Breezy. High 16°. UV index up to 2. Wind southwest around 10 mph, gusting to 20 mph, in the morning, becoming 14 mph, gusting to 22 mph, in the afternoon. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Thursday night
 
Mostly cloudy to cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog after midnight. A chance of rain. Low 12°. Wind southwest around 10 mph, gusting to 19 mph, in the evening, becoming west after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday
 
Mostly cloudy in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain. High 16°. UV index up to 3. Wind west around 9 mph, gusting to 18 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Friday night
 
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 12°. Wind south-southwest around 4 mph in the evening, becoming 9 mph, gusting to 19 mph, after midnight.
Saturday
 
Cloudy in the morning, becoming dense overcast in the afternoon. Rain likely. Windy. High 18°. UV index up to 2. Wind south-southwest around 18 mph, gusting to 26 mph. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Saturday night
 
Dense overcast in the evening, becoming cloudy after midnight. Patchy light fog. Rain likely in the evening, then a chance of rain after midnight. Breezy. Low 15°. Wind southwest around 15 mph, gusting to 24 mph, in the evening, becoming 9 mph, gusting to 17 mph, after midnight. Chance of precipitation 80 percent. Precipitation mostly between 10 and 20 mm.
Sunday
 
Mostly cloudy. Light to moderate fog in the morning. High 19°. UV index up to 3. Wind west-southwest around 6 mph.
Sunday night
 
Mostly cloudy to cloudy. Patchy light fog after midnight. A chance of rain after midnight. Low 14°. Wind south-southwest around 4 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Monday
 
Mostly cloudy to cloudy. Patchy light fog in the morning. A chance of rain. Breezy. High 18°. UV index up to 2. Wind south-southwest around 9 mph, gusting to 16 mph, in the morning, becoming 14 mph, gusting to 23 mph, in the afternoon. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Monday night
 
Mostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. Patchy light fog in the evening, then moderate fog after midnight. A chance of rain in the evening, then a slight chance of rain after midnight. Breezy. Low 13°. Wind south-southwest around 14 mph, gusting to 23 mph, in the evening, becoming west-southwest around 9 mph, gusting to 18 mph, after midnight. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Tuesday
 
Mostly cloudy to cloudy. Patchy light fog in the morning. A chance of rain in the morning, then a slight chance of rain in the afternoon. Breezy. High 15°. UV index up to 2. Wind west-southwest around 13 mph, gusting to 23 mph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. A chance of rain. Breezy. Low 10°. Wind west-northwest around 13 mph, gusting to 21 mph. Chance of precipitation 40 percent. Precipitation mostly between 2 and 5 mm.

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