WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Sunday, 23-Aug-2026 03:00 pm
 
This
afternoon
Mostly Clear
Mostly Clear
Tonight

Fog late
Fog late
Monday

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

Partly Cloudy
Partly Cloudy
Tuesday
night
Chance rain
Chance rain
Wednesday

Chance rain
Chance rain
Wednesday
night
Chance rain
Chance rain
<2 mm. 2 mm. 2 mm. 2 mm.
High: 17° Low: 9° High: 20° Low: 14° High: 20° Low: 14° High: 21° Low: 15°
               
NNE
6
mph
Light breeze
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
mph
Moderate breeze
SSE
6
mph
Light breeze
NW→E
calm→8-19
8
Fresh breeze
UV: 3
 Medium 
UV: 4
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 

 

This afternoon
 
Mostly clear. High 17°. UV index up to 3. Wind north-northeast around 6 mph.
Tonight
 
Clear. Patchy light fog after midnight. Cool. Low 9°. Wind northeast around 3 mph in the evening, becoming east-southeast after midnight.
Monday
 
Sunny in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 20°. 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 to mostly cloudy in the evening, becoming cloudy after midnight. Low 14°. Wind east-southeast around 9 mph, gusting to 19 mph.
Tuesday
 
Mostly cloudy in the morning, becoming partly cloudy in the afternoon. A slight chance of rain. Breezy. High 20°. UV index up to 4. Wind east-southeast around 11 mph, gusting to 21 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Mostly cloudy to cloudy in the evening, becoming dense overcast after midnight. Patchy light fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 14°. Wind east around 11 mph, gusting to 18 mph, in the evening, becoming 6 mph after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Wednesday
 
Cloudy in the morning, becoming mostly cloudy in the afternoon. Patchy light fog in the morning. A chance of rain. High 21°. UV index up to 3. Wind south-southeast around 6 mph. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Wednesday night
 
Mostly cloudy. 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 around 8 mph, gusting to 19 mph, after midnight. Chance of precipitation 40 percent. Precipitation mostly around 2 mm.
Thursday
 
Dense overcast in the morning, becoming cloudy in the afternoon. Patchy light fog. Rain likely. High 18°. UV index up to 2. Wind east around 11 mph, gusting to 19 mph, in the morning, becoming south-southwest around 4 mph in the afternoon. Chance of precipitation 60 percent. Precipitation mostly around 5 mm.
Thursday night
 
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 14°. Wind west-southwest around 6 mph. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Friday
 
Cloudy in the morning, becoming dense overcast in the afternoon. Light to moderate fog in the morning, then patchy light fog in the afternoon. A slight chance of rain in the morning, then rain likely in the afternoon. High 16°. UV index up to 2. Wind west-southwest around 9 mph, gusting to 17 mph, in the morning, becoming 13 mph, gusting to 21 mph, in the afternoon. Chance of precipitation 70 percent. Precipitation mostly between 5 and 10 mm.
Friday night
 
Dense overcast. Patchy light fog in the evening. Rain likely in the evening, then a chance of rain after midnight. Breezy. Low 13°. Wind west-southwest around 13 mph, gusting to 22 mph, in the evening, becoming 19 mph, gusting to 28 mph, after midnight. Chance of precipitation 70 percent. Precipitation mostly between 5 and 10 mm.
Saturday
 
Dense overcast in the morning, becoming cloudy in the afternoon. A chance of rain. Windy. High 15°. UV index up to 2. Wind west-southwest around 22 mph, gusting to 29 mph, in the morning, becoming 18 mph, gusting to 28 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Saturday night
 
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog. A chance of rain. Low 12°. Wind west around 10 mph, gusting to 20 mph. 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.