WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Wednesday, 23-Sep-2026 09:00 pm
 
Tonight

Mostly Cloudy
Mostly Cloudy
Thursday

Partly Cloudy
Partly Cloudy
Thursday
night
Chance rain
Chance rain
Friday

Chance rain
Chance rain
Friday
night
Fog late
Fog late
Saturday

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

Rain likely
Rain likely
Sunday
night
Fog
Fog
Monday

Fog a.m.
Fog a.m.
2 mm. <5 mm. <2 mm. 5 mm. <2 mm.
Low: 9° High: 18° Low: 11° High: 15° Low: 9° High: 15° Low: 10° High: 14° Low: 11° High: 16°
                   
WSW→SSW
3
mph
Light air
SSW
8-18
mph
Moderate breeze
SSW
5
mph
Light breeze
WNW
6
mph
Light breeze
WSW
4→8
mph
Gentle breeze
WSW
9-17
mph
Moderate breeze
SSW
8-16
mph
Moderate breeze
S
9-19
mph
Fresh breeze
SSW
6-16
mph
Moderate breeze
SSW→ENE
4
mph
Light breeze
UV: 3
 Medium 
UV: 2
 Low 
UV: 2
 Low 
UV: 2
 Low 

 

Tonight
 
Partly to mostly cloudy. Low 9°. Wind west-southwest around 3 mph in the evening, becoming south-southwest after midnight.
Thursday
 
Partly cloudy in the morning, becoming mostly cloudy in the afternoon. High 18°. UV index up to 3. Wind south-southwest around 8 mph, gusting to 18 mph.
Thursday night
 
Mostly 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 11°. Wind south-southwest around 5 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday
 
Cloudy. A chance of rain. High 15°. UV index up to 2. Wind west-northwest around 6 mph. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Friday night
 
Mostly cloudy in the evening, becoming fair after midnight. Moderate fog in the evening, then light to moderate fog after midnight. A slight chance of rain. Low 9°. Wind west-southwest around 4 mph in the evening, becoming 8 mph after midnight. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly to mostly sunny. Patchy light fog in the morning. High 15°. UV index up to 2. Wind west-southwest around 9 mph, gusting to 17 mph.
Saturday night
 
Fair to partly cloudy in the evening, becoming fair after midnight. Patchy light fog after midnight. Low 10°. Wind south-southwest around 8 mph, gusting to 16 mph.
Sunday
 
Partly to mostly cloudy in the morning, becoming cloudy in the afternoon. Patchy light fog. Rain likely. High 14°. Wind south around 9 mph, gusting to 19 mph. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Sunday night
 
Cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Low 11°. Wind south-southwest around 6 mph, gusting to 16 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Monday
 
Partly to mostly sunny in the morning, becoming mostly sunny in the afternoon. Patchy light fog in the morning. High 16°. UV index up to 2. Wind south-southwest around 4 mph in the morning, becoming east-northeast in the afternoon.
Monday night
 
Partly cloudy in the evening, becoming cloudy after midnight. Low 11°. Wind east-southeast around 5 mph in the evening, becoming 11 mph, gusting to 20 mph, after midnight.
Tuesday
 
Dense overcast. A chance of rain in the morning, then rain likely in the afternoon. Windy. High 16°. Wind east-southeast around 15 mph, gusting to 21 mph, in the morning, becoming 18 mph, gusting to 29 mph, in the afternoon. Chance of precipitation 70 percent. Precipitation mostly around 10 mm.
Tuesday night
 
Partly cloudy. Patchy light fog in the evening. A chance of rain in the evening, then a slight chance of rain after midnight. Breezy. Low 14°. Wind southeast around 13 mph, gusting to 21 mph, in the evening, becoming 17 mph, gusting to 27 mph, after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.

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