WXSIM Forecast for: Thurmont
Issued by: Ammenheuser Weather
Updated: Sunday, 16-Aug-2026 06:12 am
 
Today

Rain likely
Rain likely
Tonight

Rain likely
Rain likely
Monday

Mostly Cloudy
Mostly Cloudy
Monday
night
Partly Cloudy
Partly Cloudy
Tuesday

Mostly Cloudy
Mostly Cloudy
Tuesday
night
Clear
Clear
Wednesday

Sunny
Sunny
Wednesday
night
Mostly Cloudy
Mostly Cloudy
.5 in. .5 in. <.1 in.
High: 72° Low: 65° High: 79° Low: 63° High: 78° Low: 62° High: 82° Low: 65°
               
SSE
7
mph
Light breeze
SSE→WSW
5
mph
Light breeze
W
7
mph
Light breeze
NW
5
mph
Light breeze
NW
5
mph
Light breeze
NNW→W
2
mph
Light air
W
4
mph
Light breeze
NNE
3
mph
Light air
UV: 2
 Low 
UV: 6
 High 
UV: 4
 Medium 
UV: 8
 Very High 

 

Today
 
Dense overcast. Patchy light fog. A chance of rain in the morning, then rain likely in the afternoon. High 72°. UV index up to 2. Wind south-southeast around 7 mph. Chance of precipitation 80 percent. Precipitation mostly around half an inch.
Tonight
 
Dense overcast. Light to moderate fog. Rain likely in the evening, then a chance of rain after midnight. Precipitation showery or intermittent. Low 65°. Wind south-southeast around 5 mph in the evening, becoming west-southwest after midnight. Chance of precipitation 80 percent. Precipitation mostly around half an inch.
Monday
 
Mostly cloudy. High 79°. UV index up to 6. Wind west around 7 mph.
Monday night
 
Fair to partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 63°. Wind northwest around 5 mph.
Tuesday
 
Mostly cloudy to cloudy in the morning, becoming partly to mostly cloudy in the afternoon. High 78°. UV index up to 4. Wind northwest around 5 mph.
Tuesday night
 
Clear. Low 62°. Wind north-northwest around 2 mph in the evening, becoming west after midnight.
Wednesday
 
Sunny. High 82°. UV index up to 8. Wind west around 4 mph.
Wednesday night
 
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A chance of rain. Low 65°. Wind north-northeast around 3 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch.
Thursday
 
Mostly cloudy in the morning, becoming cloudy in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. Precipitation showery or intermittent. High 78°. UV index up to 6. Wind northeast around 5 mph. Chance of precipitation 40 percent. Precipitation mostly around a tenth of an inch.
Thursday night
 
Mostly cloudy in the evening, becoming dense overcast after midnight. Patchy light fog after midnight. A slight chance of rain in the evening, then rain likely after midnight. Low 64°. Wind northeast around 4 mph. Chance of precipitation 60 percent. Precipitation mostly around a quarter of an inch.

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