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

Chance rain
Chance rain
Thursday

Rain likely
Rain likely
Thursday
night
Chance rain
Chance rain
Friday

Chance rain
Chance rain
Friday
night
Chance rain
Chance rain
Saturday

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

Partly Cloudy
Partly Cloudy
Sunday
night
Partly Cloudy
Partly Cloudy
Monday

Partly Cloudy
Partly Cloudy
2 mm. 5 mm. <5 mm. <5 mm. 2 mm. <2 mm.
Low: 12° High: 14° Low: 10° High: 15° Low: 9° High: 16° Low: 9° High: 18° Low: 10° High: 20°
                   
WSW
6-15
mph
Moderate breeze
NW→N
7-17→11-19
mph
Fresh breeze
N→WNW
8-17→2
mph
Moderate breeze
NNW
2→7-15
mph
Moderate breeze
NW
4
mph
Light breeze
WNW
8-18
mph
Moderate breeze
WNW
6-17→3
mph
Moderate breeze
WSW→NNE
3
mph
Light air
NE→SSE
4
mph
Light breeze
SE
7-18→12-21
mph
Fresh breeze
UV: 3
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 

 

Tonight
 
Mostly cloudy to cloudy in the evening, becoming mostly cloudy after midnight. Moderate fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 12°. Wind west-southwest around 6 mph, gusting to 15 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Thursday
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. Light to moderate fog in the morning, then patchy light fog in the afternoon. Rain likely. Cool. High 14°. UV index up to 3. Wind northwest around 7 mph, gusting to 17 mph, in the morning, becoming north around 11 mph, gusting to 19 mph, in the afternoon. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Thursday night
 
Partly to mostly cloudy in the evening, becoming cloudy after midnight. Light to moderate fog. A chance of rain. Low 10°. Wind north around 8 mph, gusting to 17 mph, in the evening, becoming west-northwest around 2 mph after midnight. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Friday
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. Patchy light fog. A chance of rain in the morning, then a slight chance of rain in the afternoon. High 15°. UV index up to 3. Wind north-northwest around 2 mph in the morning, becoming 7 mph, gusting to 15 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Friday night
 
Partly cloudy. Patchy light fog in the evening, then light to moderate fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Cool. Low 9°. Wind northwest around 4 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Saturday
 
Partly to mostly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Light to moderate fog in the morning. A slight chance of rain in the morning. High 16°. UV index up to 3. Wind west-northwest around 8 mph, gusting to 18 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday night
 
Fair in the evening, becoming fair to partly cloudy after midnight. Cool. Low 9°. Wind west-northwest around 6 mph, gusting to 17 mph, in the evening, becoming 3 mph after midnight.
Sunday
 
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. High 18°. UV index up to 4. Wind west-southwest around 3 mph in the morning, becoming north-northeast in the afternoon.
Sunday night
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Cool. Low 10°. Wind northeast around 4 mph in the evening, becoming south-southeast after midnight.
Monday
 
Partly cloudy. High 20°. UV index up to 4. Wind southeast around 7 mph, gusting to 18 mph, in the morning, becoming 12 mph, gusting to 21 mph, in the afternoon.
Monday night
 
Mostly cloudy in the evening, becoming cloudy after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 14°. Wind east-southeast around 11 mph, gusting to 19 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Tuesday
 
Dense overcast. Patchy light fog. A chance of rain in the morning, then a slight chance of rain in the afternoon. Breezy. High 18°. UV index up to 2. Wind east-southeast around 10 mph, gusting to 17 mph, in the morning, becoming 14 mph, gusting to 24 mph, in the afternoon. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Tuesday night
 
Cloudy in the evening, becoming dense overcast after midnight. Patchy light fog after midnight. A slight chance of rain in the evening, then rain likely after midnight. Low 15°. Wind east-southeast around 11 mph, gusting to 19 mph. Chance of precipitation 80 percent. Precipitation mostly around 20 mm.

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