WXSIM Forecast for: Thurmont
Issued by: Ammenheuser Weather
Updated: Friday, 28-Aug-2026 10:53 am
 
This
afternoon
Mostly Cloudy
Mostly Cloudy
Tonight

Fog late
Fog late
Saturday

Fog a.m.
Fog a.m.
Saturday
night
Partly Cloudy
Partly Cloudy
Sunday

Partly Cloudy
Partly Cloudy
Sunday
night
Mostly Cloudy
Mostly Cloudy
Monday

Mostly Cloudy
Mostly Cloudy
Monday
night
Chance rain
Chance rain
<.25 in.
High: 79° Low: 60° High: 81° Low: 63° High: 86° Low: 68° High: 88° Low: 68°
               
NNW
4
mph
Light breeze
N
4
mph
Light breeze
NNE→SE
3
mph
Light air
SE
4
mph
Light breeze
SSW
6-16
mph
Moderate breeze
NNE
3
mph
Light air
NNE→WSW
3
mph
Light air
NE→SE
2
mph
Light air
UV: 6
 High 
UV: 7
 High 
UV: 7
 High 
UV: 6
 High 

 

This afternoon
 
Partly to mostly cloudy. High 79°. UV index up to 6. Wind north-northwest around 4 mph.
Tonight
 
Mostly clear in the evening, becoming fair after midnight. Patchy light fog after midnight. Low 60°. Wind north around 4 mph.
Saturday
 
Sunny. Patchy light fog in the morning. High 81°. UV index up to 7. Wind north-northeast around 3 mph in the morning, becoming southeast in the afternoon.
Saturday night
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Low 63°. Wind southeast around 4 mph.
Sunday
 
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Hot. High 86°. UV index up to 7. Wind south-southwest around 6 mph, gusting to 16 mph.
Sunday night
 
Mostly cloudy. Low 68°. Wind north-northeast around 3 mph.
Monday
 
Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Hot. High 88°. UV index up to 6. Wind north-northeast around 3 mph in the morning, becoming west-southwest in the afternoon.
Monday night
 
Cloudy. Patchy light fog after midnight. A chance of rain. Precipitation showery or intermittent. Low 68°. Wind northeast around 2 mph in the evening, becoming southeast after midnight. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch.
Tuesday
 
Cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog in the morning. A chance of rain. Precipitation showery or intermittent. High 83°. UV index up to 5. Wind west around 5 mph. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch.
Tuesday night
 
Partly cloudy. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Low 69°. Wind southwest around 3 mph. Chance of precipitation 40 percent. Precipitation mostly less than a quarter of an inch.

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