WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Monday, 17-Aug-2026 11:00 am
 
This
afternoon
Cloudy
Cloudy
Tonight

Chance rain
Chance rain
Tuesday

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

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

Rain likely
Rain likely
Thursday
night
Chance rain
Chance rain
Friday

Fog a.m.
Fog a.m.
Friday
night
Fog
Fog
2 mm. <2 mm. 2 mm. <2 mm. 2 mm. 10 mm. 5 mm. <2 mm. 2 mm.
High: 18° Low: 14° High: 17° Low: 12° High: 16° Low: 11° High: 14° Low: 11° High: 16° Low: 11°
                   
WNW
8-16
mph
Moderate breeze
WSW
8-16→11-17
mph
Moderate breeze
W
12-20
mph
Fresh breeze
W
8-18
mph
Moderate breeze
W
10-19
mph
Fresh breeze
WSW
9-19→5
mph
Fresh breeze
WSW→NW
6-15
mph
Moderate breeze
NNE→ENE
5-16
mph
Moderate breeze
ENE→N
7-16
mph
Moderate breeze
ENE
6-16
mph
Moderate breeze
UV: 2
 Low 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 4
 Medium 

 

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

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