WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Monday, 17-Aug-2026 06:00 pm
 
Tonight

Chance rain
Chance rain
Tuesday

Fog a.m.
Fog a.m.
Tuesday
night
Fog late
Fog late
Wednesday

Fog a.m.
Fog a.m.
Wednesday
night
Chance rain
Chance rain
Thursday

Rain likely
Rain likely
Thursday
night
Rain likely
Rain likely
Friday

Chance rain
Chance rain
2 mm. <2 mm. <2 mm. <2 mm. <5 mm. 10 mm. 7 mm. 2 mm.
Low: 14° High: 16° Low: 12° High: 17° Low: 12° High: 15° Low: 11° High: 15°
               
WSW
9-19→13-21
mph
Fresh breeze
WNW
12-19
mph
Fresh breeze
WNW→SW
6-16
mph
Moderate breeze
SW
10-19
mph
Fresh breeze
SW
8-18→4
mph
Moderate breeze
WNW
6-16
mph
Moderate breeze
NNE→ENE
9-16→5
mph
Moderate breeze
E→NE
7-15
mph
Moderate breeze
UV: 3
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 

 

Tonight
 
Cloudy. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Breezy. Low 14°. Wind west-southwest around 9 mph, gusting to 19 mph, in the evening, becoming 13 mph, gusting to 21 mph, after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Tuesday
 
Cloudy. Patchy light fog in the morning. A chance of rain. Breezy. High 16°. UV index up to 3. Wind west-northwest around 12 mph, gusting to 19 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Dense overcast in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog after midnight. A chance of rain. Low 12°. Wind west-northwest around 6 mph, gusting to 16 mph, in the evening, becoming southwest after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. A chance of rain. High 17°. UV index up to 4. Wind southwest around 10 mph, gusting to 19 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Wednesday night
 
Mostly cloudy to cloudy. Light to moderate fog. A chance of rain. Low 12°. Wind southwest around 8 mph, gusting to 18 mph, in the evening, becoming 4 mph after midnight. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Thursday
 
Mostly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Moderate fog. Rain likely in the morning, then a chance of rain in the afternoon. High 15°. UV index up to 3. Wind west-northwest around 6 mph, gusting to 16 mph. Chance of precipitation 70 percent. Precipitation mostly around 10 mm.
Thursday night
 
Mostly cloudy. Light to moderate fog in the evening, then moderate fog after midnight. Rain likely. Low 11°. Wind north-northeast around 9 mph, gusting to 16 mph, in the evening, becoming east-northeast around 5 mph after midnight. Chance of precipitation 60 percent. Precipitation mostly between 5 and 10 mm.
Friday
 
Mostly cloudy. Moderate fog in the morning, then patchy light fog in the afternoon. A chance of rain in the morning, then a slight chance of rain in the afternoon. High 15°. UV index up to 3. Wind east around 7 mph, gusting to 15 mph, in the morning, becoming northeast in the afternoon. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday night
 
Partly to mostly cloudy. A slight chance of rain. Low 11°. Wind northeast around 7 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly to mostly sunny. High 17°. UV index up to 4. Wind east-northeast around 6 mph, gusting to 15 mph, in the morning, becoming north in the afternoon.
Saturday night
 
Clear in the evening, becoming fair after midnight. Light to moderate fog after midnight. Cool. Low 10°. Wind north around 6 mph.
Sunday
 
Sunny in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. High 17°. UV index up to 4. Wind north around 5 mph.
Sunday night
 
Clear. Patchy light fog after midnight. Cool. Low 10°. Wind north around 5 mph in the evening, becoming southeast after midnight.

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