WXSIM Forecast for: Thurmont
Issued by: Ammenheuser Weather
Updated: Friday, 10-Jul-2026 08:53 pm
 
Tonight

Fog late
Fog late
Saturday

Chance rain
Chance rain
Saturday
night
Chance rain
Chance rain
Sunday

Mostly Cloudy
Mostly Cloudy
Sunday
night
Partly Cloudy
Partly Cloudy
Monday

Sunny
Sunny
Monday
night
Fog late
Fog late
Tuesday

Fog a.m.
Fog a.m.
<.25 in. <.1 in.
Low: 69° High: 80° Low: 66° High: 80° Low: 62° High: 83° Low: 62° High: 87°
               
W
calm

Calm
NNW
2
mph
Light air
NNE
4
mph
Light breeze
NE→ESE
7-17
mph
Moderate breeze
ESE
3
mph
Light air
SE
3→6
mph
Light breeze
SSE→SSW
3
mph
Light air
W
5
mph
Light breeze
UV: 6
 High 
UV: 6
 High 
UV: 8
 Very High 
UV: 9
 Very High 

 

Tonight
 
Partly to mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog after midnight. Low 69°. Wind west near calm.
Saturday
 
Cloudy. Patchy light fog in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. Precipitation showery or intermittent. High 80°. UV index up to 6. Wind north-northwest around 2 mph. Chance of precipitation 60 percent. Precipitation mostly less than a quarter of an inch.
Saturday night
 
Mostly cloudy to cloudy. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Low 66°. Wind north-northeast around 4 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch.
Sunday
 
Mostly cloudy to cloudy in the morning, becoming mostly cloudy in the afternoon. High 80°. UV index up to 6. Wind northeast around 7 mph, gusting to 17 mph, in the morning, becoming east-southeast in the afternoon.
Sunday night
 
Mostly cloudy in the evening, becoming partly cloudy after midnight. Low 62°. Wind east-southeast around 3 mph.
Monday
 
Sunny. High 83°. UV index up to 8. Wind southeast around 3 mph in the morning, becoming 6 mph in the afternoon.
Monday night
 
Clear. Patchy light fog after midnight. Relatively cool. Low 62°. Wind south-southeast around 3 mph in the evening, becoming south-southwest after midnight.
Tuesday
 
Sunny. Patchy light fog in the morning. High 87°. UV index up to 9. Wind west around 5 mph.
Tuesday night
 
Fair to partly cloudy in the evening, becoming clear after midnight. Low 67°. Wind west around 5 mph.

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