WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Thursday, 20-Aug-2026 06:00 pm
 
Tonight

Rain likely
Rain likely
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

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

Mostly Cloudy
Mostly Cloudy
Monday
night
Partly Cloudy
Partly Cloudy
Tuesday

Mostly Cloudy
Mostly Cloudy
5 mm. 2 mm. <2 mm. <2 mm.
Low: 11° High: 15° Low: 10° High: 17° Low: 9° High: 18° Low: 10° High: 21° Low: 15° High: 21°
                   
NNW
8-19→3
mph
Fresh breeze
NNW
2→7-16
mph
Moderate breeze
NNW→WNW
5-16
mph
Moderate breeze
WNW
9-18
mph
Moderate breeze
W
6-18→3
mph
Moderate breeze
W→NNW
4
mph
Light breeze
NNE→SSE
4
mph
Light breeze
ESE
10-19
mph
Fresh breeze
ESE
16-25
mph
Strong breeze
ESE
17-29
mph
Strong breeze
UV: 3
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 

 

Tonight
 
Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Light to moderate fog. Rain likely. Low 11°. Wind north-northwest around 8 mph, gusting to 19 mph, in the evening, becoming 3 mph after midnight. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Friday
 
Mostly cloudy to cloudy in the morning, becoming partly to 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 16 mph, in the afternoon. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday night
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. A chance of rain. Cool. Low 10°. Wind north-northwest around 5 mph, gusting to 16 mph, in the evening, becoming west-northwest after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Light to moderate fog in the morning. High 17°. UV index up to 4. Wind west-northwest around 9 mph, gusting to 18 mph.
Saturday night
 
Fair in the evening, becoming fair to partly cloudy after midnight. Patchy light fog after midnight. Cool. Low 9°. Wind west around 6 mph, gusting to 18 mph, in the evening, becoming 3 mph after midnight.
Sunday
 
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 18°. UV index up to 4. Wind west around 4 mph in the morning, becoming north-northwest in the afternoon.
Sunday night
 
Fair to partly cloudy. Cool. Low 10°. Wind north-northeast around 4 mph in the evening, becoming south-southeast after midnight.
Monday
 
Sunny in the morning, becoming partly to mostly cloudy in the afternoon. High 21°. UV index up to 4. Wind east-southeast around 10 mph, gusting to 19 mph.
Monday night
 
Fair to partly cloudy in the evening, becoming cloudy after midnight. Breezy. Low 15°. Wind east-southeast around 16 mph, gusting to 25 mph.
Tuesday
 
Dense overcast in the morning, becoming mostly cloudy in the afternoon. A slight chance of rain in the morning. Windy and mild. High 21°. UV index up to 3. Wind east-southeast around 17 mph, gusting to 29 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Dense overcast. Patchy light fog after midnight. A chance of rain in the evening, then rain likely after midnight. Breezy. Low 16°. Wind east-southeast around 19 mph, gusting to 30 mph, in the evening, becoming 13 mph, gusting to 21 mph, after midnight. Chance of precipitation 70 percent. Precipitation mostly around 10 mm.
Wednesday
 
Mostly cloudy in the morning, becoming cloudy in the afternoon. Light to moderate fog in the morning, then moderate fog in the afternoon. Rain likely. High 17°. UV index up to 2. Wind southeast around 8 mph, gusting to 16 mph, in the morning, becoming southwest around 5 mph in the afternoon. Chance of precipitation 70 percent. Precipitation mostly around 10 mm.
Wednesday night
 
Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Moderate fog in the evening, then light to moderate fog after midnight. A chance of rain. Low 14°. Wind south around 4 mph in the evening, becoming east-southeast 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.