WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Friday, 18-Sep-2026 09:00 pm
 
Tonight

Cloudy
Cloudy
Saturday

Mostly Cloudy
Mostly Cloudy
Saturday
night
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
<2 mm. <2 mm. <2 mm.
Low: 15° High: 18° Low: 11° High: 15° Low: 11° High: 20° Low: 11° High: 17°
               
SW
17-28
mph
Strong breeze
SW
15-24
mph
Fresh breeze
WSW
13-22
mph
Fresh breeze
W
13-21→10-19
mph
Fresh breeze
SW
5
mph
Light breeze
SW
7
mph
Light breeze
SSW
4
mph
Light breeze
SSW→ENE
2
mph
Light air
UV: 3
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 2
 Low 

 

Tonight
 
Cloudy. A slight chance of rain. Windy. Low 15°. Wind southwest around 17 mph, gusting to 28 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Saturday
 
Mostly cloudy. A chance of rain. Breezy. High 18°. UV index up to 3. Wind southwest around 15 mph, gusting to 24 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday night
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Breezy. Low 11°. Wind west-southwest around 13 mph, gusting to 22 mph.
Sunday
 
Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. Breezy. High 15°. UV index up to 3. Wind west around 13 mph, gusting to 21 mph, in the morning, becoming 10 mph, gusting to 19 mph, in the afternoon.
Sunday night
 
Partly cloudy in the evening, becoming mostly cloudy to 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 7 mph.
Monday night
 
Fair in the evening, becoming partly cloudy after midnight. Low 11°. Wind south-southwest around 4 mph.
Tuesday
 
Partly to mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain. High 17°. UV index up to 2. Wind south-southwest around 2 mph in the morning, becoming east-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 slight chance of rain. Low 12°. Wind south-southeast around 3 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Mostly cloudy to cloudy in the morning, becoming mostly cloudy in the afternoon. Patchy light fog in the morning. Rain likely. High 14°. UV index up to 2. Wind southwest around 10 mph, gusting to 20 mph, in the morning, becoming northwest in the afternoon. Chance of precipitation 60 percent. Precipitation mostly between 5 and 10 mm.
Wednesday night
 
Partly cloudy. Patchy light fog. Low 9°. Wind northwest around 4 mph, gusting to 15 mph, in the evening, becoming south after midnight.
Thursday
 
Partly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog in the morning. High 17°. UV index up to 2. Wind south around 8 mph, gusting to 17 mph.
Thursday night
 
Partly cloudy in the evening, becoming mostly clear after midnight. Low 9°. Wind south around 6 mph.

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