WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Sunday, 23-Aug-2026 06:00 pm
 
Tonight

Fog late
Fog late
Monday

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

Mostly Cloudy
Mostly Cloudy
Tuesday
night
Chance rain
Chance rain
Wednesday

Chance rain
Chance rain
Wednesday
night
Fog late
Fog late
Thursday

Chance rain
Chance rain
<2 mm. <2 mm. 2 mm. <2 mm. <2 mm.
Low: 10° High: 19° Low: 14° High: 19° Low: 14° High: 20° Low: 15° High: 19°
               
NE→ESE
3
mph
Light air
ESE
7-16→10-19
mph
Fresh breeze
ESE
9-19
mph
Fresh breeze
ESE
11-21
mph
Fresh breeze
E
11-18→6-15
mph
Moderate breeze
SSE
6-15
mph
Moderate breeze
NW→ESE
calm→6-15
6
Moderate breeze
SE→WNW
5
mph
Light breeze
UV: 4
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 2
 Low 

 

Tonight
 
Mostly clear in the evening, becoming clear after midnight. Patchy light fog after midnight. Cool. Low 10°. Wind northeast around 3 mph in the evening, becoming east-southeast after midnight.
Monday
 
Sunny in the morning, becoming mostly sunny in the afternoon. Patchy light fog in the morning. High 19°. UV index up to 4. Wind east-southeast around 7 mph, gusting to 16 mph, in the morning, becoming 10 mph, gusting to 19 mph, in the afternoon.
Monday night
 
Partly cloudy in the evening, becoming cloudy after midnight. Low 14°. Wind east-southeast around 9 mph, gusting to 19 mph.
Tuesday
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. A slight chance of rain in the morning. Breezy. High 19°. UV index up to 3. Wind east-southeast around 11 mph, gusting to 21 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Mostly cloudy to cloudy in the evening, becoming cloudy after midnight. Patchy light fog after midnight. A chance of rain after midnight. Low 14°. Wind east around 11 mph, gusting to 18 mph, in the evening, becoming 6 mph, gusting to 15 mph, after midnight. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Wednesday
 
Mostly cloudy. Patchy light fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 20°. UV index up to 3. Wind south-southeast around 6 mph, gusting to 15 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Wednesday night
 
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 15°. Wind northwest near calm in the evening, becoming east-southeast around 6 mph, gusting to 15 mph, after midnight. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Thursday
 
Cloudy. Patchy light fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 19°. UV index up to 2. Wind southeast around 5 mph in the morning, becoming west-northwest in the afternoon. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Thursday night
 
Cloudy in the evening, becoming fair to partly cloudy after midnight. Moderate fog in the evening, then moderate to dense fog after midnight. A chance of rain. Low 14°. Wind northwest around 4 mph in the evening, becoming west-southwest around 8 mph, gusting to 16 mph, after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Friday
 
Mostly cloudy to cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. A chance of rain. Breezy. High 18°. UV index up to 3. Wind west-southwest around 13 mph, gusting to 23 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Friday night
 
Mostly cloudy in the evening, becoming dense overcast after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Windy. Low 12°. Wind west around 14 mph, gusting to 26 mph, in the evening, becoming 21 mph, gusting to 31 mph, after midnight. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Saturday
 
Dense overcast in the morning, becoming mostly cloudy in the afternoon. A chance of rain in the morning, then a slight chance of rain in the afternoon. Windy and cool. High 14°. UV index up to 2. Wind west-northwest around 23 mph, gusting to 31 mph, in the morning, becoming 20 mph, gusting to 31 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Saturday night
 
Partly cloudy in the evening, becoming cloudy after midnight. Low 12°. Wind west around 10 mph, gusting to 22 mph, in the evening, becoming 5 mph after midnight.

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