WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Saturday, 22-Aug-2026 06:00 pm
 
Tonight

Fog late
Fog late
Sunday

Fog a.m.
Fog a.m.
Sunday
night
Fog late
Fog late
Monday

Fog a.m.
Fog a.m.
Monday
night
Mostly Cloudy
Mostly Cloudy
Tuesday

Chance rain
Chance rain
Tuesday
night
Chance rain
Chance rain
Wednesday

Chance rain
Chance rain
2 mm. 2 mm. 2 mm.
Low: 9° High: 18° Low: 9° High: 20° Low: 12° High: 18° Low: 14° High: 19°
               
NNW
7-20→4
mph
Fresh breeze
NNW
5
mph
Light breeze
NE→SSE
3
mph
Light air
SE
8-18
mph
Moderate breeze
E
8-18
mph
Moderate breeze
E
11-20
mph
Fresh breeze
E
11-17
mph
Moderate breeze
E
9
mph
Gentle breeze
UV: 4
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 
UV: 4
 Medium 

 

Tonight
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Patchy light fog after midnight. Cool. Low 9°. Wind north-northwest around 7 mph, gusting to 20 mph, in the evening, becoming 4 mph after midnight.
Sunday
 
Partly to mostly sunny in the morning, becoming mostly sunny in the afternoon. Patchy light fog in the morning. High 18°. UV index up to 4. Wind north-northwest around 5 mph.
Sunday night
 
Mostly clear. Patchy light fog after midnight. Cool. Low 9°. Wind northeast around 3 mph in the evening, becoming south-southeast after midnight.
Monday
 
Sunny in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. High 20°. UV index up to 4. Wind southeast around 8 mph, gusting to 18 mph.
Monday night
 
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Low 12°. Wind east around 8 mph, gusting to 18 mph.
Tuesday
 
Mostly cloudy to cloudy. A chance of rain in the morning, then a slight chance of rain in the afternoon. High 18°. UV index up to 3. Wind east around 11 mph, gusting to 20 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Tuesday night
 
Cloudy. A chance of rain. Low 14°. Wind east around 11 mph, gusting to 17 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Wednesday
 
Cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A chance of rain. High 19°. UV index up to 4. Wind east around 9 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Wednesday night
 
Mostly cloudy in the evening, becoming cloudy after midnight. A chance of rain. Low 15°. Wind east around 9 mph in the evening, becoming 12 mph, gusting to 18 mph, after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Thursday
 
Dense overcast in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog in the morning, then moderate fog in the afternoon. Rain very likely. High 17°. UV index up to 2. Wind east around 13 mph, gusting to 21 mph, in the morning, becoming southeast around 7 mph, gusting to 16 mph, in the afternoon. Chance of precipitation 80 percent. Precipitation mostly around 30 mm.
Thursday night
 
Dense overcast. Moderate fog in the evening, then patchy light fog after midnight. Rain likely. Low 14°. Wind southeast around 9 mph, gusting to 17 mph. Chance of precipitation 70 percent. Precipitation mostly between 5 and 10 mm.
Friday
 
Dense overcast in the morning, becoming cloudy in the afternoon. Patchy light fog. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 17°. UV index up to 3. Wind east-southeast around 8 mph, gusting to 16 mph, in the morning, becoming 5 mph in the afternoon. Chance of precipitation 50 percent. Precipitation mostly around 2 mm.
Friday night
 
Dense overcast. Patchy light fog. Rain likely. Low 13°. Wind northwest around 8 mph, gusting to 16 mph, in the evening, becoming 11 mph, gusting to 20 mph, after midnight. Chance of precipitation 60 percent. Precipitation mostly between 2 and 5 mm.

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