WXSIM Forecast for: Thurmont
Issued by: Ammenheuser Weather
Updated: Thursday, 24-Sep-2026 09:12 pm
 
Tonight

Partly Cloudy
Partly Cloudy
Friday

Partly Cloudy
Partly Cloudy
Friday
night
Partly Cloudy
Partly Cloudy
Saturday

Partly Cloudy
Partly Cloudy
Saturday
night
Chance rain
Chance rain
Sunday

Mostly Cloudy
Mostly Cloudy
Sunday
night
Overcast
Overcast
Monday

Overcast
Overcast
<.1 in. <.1 in. <.1 in.
Low: 46° High: 67° Low: 50° High: 65° Low: 52° High: 63° Low: 54° High: 63°
               
NNE
6
mph
Light breeze
NNE
9-19→13-21
mph
Fresh breeze
N
10-18
mph
Moderate breeze
NNW
12-22
mph
Fresh breeze
N→NW
9-16
mph
Moderate breeze
NW
14-23
mph
Fresh breeze
N
10-18→4
mph
Moderate breeze
N
3
mph
Light air
UV: 5
 Medium 
UV: 4
 Medium 
UV: 3
 Medium 
UV: 2
 Low 

 

Tonight
 
Partly cloudy. Cool. Low 46°. Wind north-northeast around 6 mph.
Friday
 
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. High 67°. UV index up to 5. Wind north-northeast around 9 mph, gusting to 19 mph, in the morning, becoming 13 mph, gusting to 21 mph, in the afternoon.
Friday night
 
Mostly cloudy in the evening, becoming partly cloudy after midnight. Low 50°. Wind north around 10 mph, gusting to 18 mph.
Saturday
 
Partly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Breezy. High 65°. UV index up to 4. Wind north-northwest around 12 mph, gusting to 22 mph.
Saturday night
 
Cloudy in the evening, becoming dense overcast after midnight. A chance of rain in the evening, then a slight chance of rain after midnight. Low 52°. Wind north around 9 mph, gusting to 16 mph, in the evening, becoming northwest after midnight. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch.
Sunday
 
Mostly cloudy in the morning, becoming dense overcast in the afternoon. Breezy. High 63°. UV index up to 3. Wind northwest around 14 mph, gusting to 23 mph.
Sunday night
 
Dense overcast. A chance of rain. Low 54°. Wind north around 10 mph, gusting to 18 mph, in the evening, becoming 4 mph after midnight. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch.
Monday
 
Dense overcast. A slight chance of rain. High 63°. UV index up to 2. Wind north around 3 mph. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch.
Monday night
 
Dense overcast. Low 55°. Wind east-northeast near calm in the evening, becoming south-southeast after midnight.

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