WXSIM Forecast for: Colwyn Bay
Issued by: Saratoga-Weather.org
Updated: Tuesday, 18-Aug-2026 09:00 pm
 
Tonight

Chance rain
Chance rain
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
Friday
night
Chance rain
Chance rain
Saturday

Chance rain
Chance rain
<2 mm. <2 mm. <5 mm. 10 mm. 15 mm. <5 mm. 2 mm. 2 mm.
Low: 13° High: 17° Low: 11° High: 14° Low: 11° High: 14° Low: 10° High: 15°
               
WSW
7-16
mph
Moderate breeze
WSW
9-18
mph
Moderate breeze
WSW
8-18→4
mph
Moderate breeze
WNW→NNW
7→11-19
mph
Fresh breeze
N→W
6-16→2
mph
Moderate breeze
NNW
5-15
mph
Moderate breeze
N→NW
4
mph
Light breeze
NW
7
mph
Light breeze
UV: 4
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 
UV: 3
 Medium 

 

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

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