WXSIM Forecast for: Thurmont
Issued by: Ammenheuser Weather
Updated: Saturday, 25-Jul-2026 08:53 pm
 
Tonight

Partly Cloudy
Partly Cloudy
Sunday

Chance rain
Chance rain
Sunday
night
Chance rain
Chance rain
Monday

Thunder storm
Thunder storm
Monday
night
Thunder storm
Thunder storm
Tuesday

Thunder storm
Thunder storm
Tuesday
night
Chance rain
Chance rain
Wednesday

Fog a.m.
Fog a.m.
<.1 in. <.25 in. <.1 in. <.1 in. <.25 in. .25 in.
Low: 64° High: 82° Low: 65° High: 84° Low: 68° High: 76° Low: 67° High: 80°
               
S
2
mph
Light air
S
2
mph
Light air
SSW
2
mph
Light air
W
2
mph
Light air
ENE→SE
2
mph
Light air
ENE
3
mph
Light air
NNE→NW
4
mph
Light breeze
NW
9-21→12-21
mph
Fresh breeze
UV: 6
 High 
UV: 7
 High 
UV: 5
 Medium 
UV: 7
 High 

 

Tonight
 
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Low 64°. Wind south around 2 mph.
Sunday
 
Partly cloudy in the morning, becoming mostly 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 82°. UV index up to 6. Wind south around 2 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch.
Sunday night
 
Partly cloudy. Moderate fog. A chance of rain in the evening, then a slight chance of rain after midnight. Precipitation showery or intermittent. Low 65°. Wind south-southwest around 2 mph. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch.
Monday
 
Partly to mostly sunny. Patchy light fog in the morning. A slight chance of rain. Scattered thundershowers possible. High 84°. UV index up to 7. Wind west around 2 mph. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch.
Monday night
 
Partly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog after midnight. A chance of rain. Scattered thundershowers possible. Low 68°. Wind east-northeast around 2 mph in the evening, becoming southeast after midnight. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch.
Tuesday
 
Cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog. Rain likely. Scattered thundershowers possible. High 76°. UV index up to 5. Wind east-northeast around 3 mph. Chance of precipitation 60 percent. Precipitation mostly less than a quarter of an inch.
Tuesday night
 
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Moderate fog. A chance of rain in the evening, then a slight chance of rain after midnight. Precipitation showery or intermittent. Low 67°. Wind north-northeast around 4 mph in the evening, becoming northwest after midnight. Chance of precipitation 60 percent. Precipitation mostly around a quarter of an inch.
Wednesday
 
Sunny in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. High 80°. UV index up to 7. Wind northwest around 9 mph, gusting to 21 mph, in the morning, becoming 12 mph, gusting to 21 mph, in the afternoon.
Wednesday night
 
Clear. Low 62°. Wind northwest around 6 mph, gusting to 16 mph.

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