WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Wednesday, 02-Sep-2026 03:00 pm
 
This
afternoon
Mostly Cloudy
Mostly Cloudy
Tonight

Fog
Fog
Thursday

Chance rain
Chance rain
Thursday
night
Rain likely
Rain likely
Friday

Fog a.m.
Fog a.m.
Friday
night
Fog late
Fog late
Saturday

Partly Cloudy
Partly Cloudy
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Mostly Cloudy
Mostly Cloudy
Sunday
night
Chance rain
Chance rain
<2 mm. <2 mm. 15 mm. <2 mm. <2 mm. <2 mm. <2 mm.
High: 21° Low: 15° High: 17° Low: 13° High: 16° Low: 11° High: 18° Low: 12° High: 20° Low: 14°
                   
SW
12-24
mph
Fresh breeze
SW
13-20
mph
Fresh breeze
SW
12-20
mph
Fresh breeze
SW
10-18
mph
Moderate breeze
WSW
16-26
mph
Strong breeze
WSW
12-23
mph
Fresh breeze
WSW
9-17
mph
Moderate breeze
S
5
mph
Light breeze
SSE
7
mph
Light breeze
S
9-15
mph
Moderate breeze
UV: 2
 Low 
UV: 2
 Low 
UV: 3
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 

 

This afternoon
 
Mostly cloudy. Breezy and mild. High 21°. UV index up to 2. Wind southwest around 12 mph, gusting to 24 mph.
Tonight
 
Cloudy. Patchy light fog. A chance of rain. Breezy. Low 15°. Wind southwest around 13 mph, gusting to 20 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Thursday
 
Cloudy. Patchy light fog. A chance of rain. Breezy. High 17°. UV index up to 2. Wind southwest around 12 mph, gusting to 20 mph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Thursday night
 
Dense overcast in the evening, becoming cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. Rain likely in the evening, then a chance of rain after midnight. Low 13°. Wind southwest around 10 mph, gusting to 18 mph. Chance of precipitation 80 percent. Precipitation mostly between 10 and 20 mm.
Friday
 
Mostly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. A chance of rain. Windy. High 16°. UV index up to 3. Wind west-southwest around 16 mph, gusting to 26 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
Friday night
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Patchy light fog after midnight. A slight chance of rain. Breezy. Low 11°. Wind west-southwest around 12 mph, gusting to 23 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Saturday
 
Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. High 18°. UV index up to 4. Wind west-southwest around 9 mph, gusting to 17 mph.
Saturday night
 
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 12°. Wind south around 5 mph.
Sunday
 
Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon. A chance of rain in the afternoon. High 20°. UV index up to 3. Wind south-southeast around 7 mph. Chance of precipitation 30 percent. Precipitation mostly less than 2 mm.
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 14°. Wind south around 9 mph, gusting to 15 mph. Chance of precipitation 40 percent. Precipitation mostly less than 2 mm.
Monday
 
Cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Windy. High 16°, but temperatures falling in the afternoon. UV index up to 2. Wind west around 13 mph, gusting to 26 mph, in the morning, becoming 20 mph, gusting to 30 mph, in the afternoon. Chance of precipitation 50 percent. Precipitation mostly between 2 and 5 mm.
Monday night
 
Fair in the evening, becoming fair to partly cloudy after midnight. Very windy and cool. Low 11°. Wind west around 25 mph, gusting to 38 mph, in the evening, becoming 29 mph, gusting to 40 mph, after midnight.
Tuesday
 
Partly cloudy. A slight chance of rain. Very windy and cool. High 14°. UV index up to 3. Wind west around 25 mph, gusting to 35 mph. Chance of precipitation 20 percent. Precipitation mostly less than 2 mm.
Tuesday night
 
Mostly cloudy in the evening, becoming cloudy after midnight. A chance of rain. Windy and cool. Low 10°. Wind west around 21 mph, gusting to 29 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.