WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Saturday, 19-Sep-2026 09:00 pm
 
Tonight

Partly Cloudy
Partly Cloudy
Sunday

Partly Cloudy
Partly Cloudy
Sunday
night
Partly Cloudy
Partly Cloudy
Monday

Partly Cloudy
Partly Cloudy
Monday
night
Partly Cloudy
Partly Cloudy
Tuesday

Mostly Cloudy
Mostly Cloudy
Tuesday
night
Mostly Cloudy
Mostly Cloudy
Wednesday

Chance rain
Chance rain
Wednesday
night
Fog
Fog
Thursday

Fog a.m.
Fog a.m.
<2 mm. <2 mm. 5 mm.
Low: 11° High: 16° Low: 11° High: 20° Low: 12° High: 19° Low: 13° High: 14° Low: 9° High: 16°
                   
WSW
13-22
mph
Fresh breeze
WSW
14-22→10-20
mph
Fresh breeze
SW
5
mph
Light breeze
SW
6
mph
Light breeze
SSW
4
mph
Light breeze
SSW→NE
2
mph
Light air
S
3
mph
Light air
SW→NW
6-17→15-25
mph
Strong breeze
NW
11-23→3
mph
Fresh breeze
SSW
7-17
mph
Moderate breeze
UV: 3
 Medium 
UV: 3
 Medium 
UV: 2
 Low 
UV: 2
 Low 
UV: 3
 Medium 

 

Tonight
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Breezy. Low 11°. Wind west-southwest around 13 mph, gusting to 22 mph.
Sunday
 
Mostly sunny in the morning, becoming partly cloudy in the afternoon. Breezy. High 16°. UV index up to 3. Wind west-southwest around 14 mph, gusting to 22 mph, in the morning, becoming 10 mph, gusting to 20 mph, in the afternoon.
Sunday night
 
Partly cloudy in the evening, becoming mostly cloudy after midnight. Low 11°. Wind southwest around 5 mph.
Monday
 
Mostly cloudy to cloudy in the morning, becoming partly cloudy in the afternoon. Mild. High 20°. UV index up to 3. Wind southwest around 6 mph.
Monday night
 
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 12°. Wind south-southwest around 4 mph.
Tuesday
 
Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Mild. High 19°. UV index up to 2. Wind south-southwest around 2 mph in the morning, becoming northeast in the afternoon. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Mostly cloudy to cloudy in the evening, becoming cloudy after midnight. A chance of rain. Low 13°. Wind south around 3 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Cloudy in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the afternoon. A chance of rain. High 14°, but temperatures falling in the afternoon. UV index up to 2. Wind southwest around 6 mph, gusting to 17 mph, in the morning, becoming northwest around 15 mph, gusting to 25 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly around 5 mm.
Wednesday night
 
Partly to mostly cloudy. Patchy light fog. Low 9°. Wind northwest around 11 mph, gusting to 23 mph, in the evening, becoming 3 mph after midnight.
Thursday
 
Mostly sunny in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. High 16°. UV index up to 3. Wind south-southwest around 7 mph, gusting to 17 mph.
Thursday night
 
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. A chance of rain after midnight. Breezy. Low 11°. Wind south-southwest around 8 mph, gusting to 18 mph, in the evening, becoming 15 mph, gusting to 23 mph, after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday
 
Partly cloudy. Light to moderate fog in the morning. A chance of rain. High 18°. UV index up to 3. Wind south-southwest around 7 mph, gusting to 18 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday night
 
Mostly cloudy to cloudy in the evening, becoming cloudy after midnight. Low 12°. Wind southeast around 7 mph in the evening, becoming 4 mph after midnight.

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