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WXSIM Forecast for: Thurmont
Issued by: Ammenheuser Weather
Updated: Sunday, 28-Jun-2026 03:12 pm
 
This
afternoon
Mostly Cloudy
Mostly Cloudy		 Tonight

Fog late
Fog late		 Monday

Chance rain
Chance rain		 Monday
night
Fog late
Fog late		 Tuesday

Fog a.m.
Fog a.m.		 Tuesday
night
Fog late
Fog late		 Wednesday

Sunny
Sunny		 Wednesday
night
Mostly Clear
Mostly Clear
<.1 in. <.25 in.
High: 78° Low: 65° High: 79° Low: 65° High: 87° Low: 68° High: 92° Low: 71°
            Heat: 98°  
N
3
mph
Light air		 E
calm

Calm		 E
2
mph
Light air		 SSE
3
mph
Light air		 S
6-16
mph
Moderate breeze		 S
5
mph
Light breeze		 W→NW
6
mph
Light breeze		 NW
4
mph
Light breeze
UV: 5
 Medium 		 UV: 8
 Very High 		 UV: 9
 Very High 		 UV: 10
 Very High 

 

This afternoon
 
 Partly to mostly cloudy. High 78°. UV index up to 5. Wind north around 3 mph.
Tonight
 
 Partly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog after midnight. A slight chance of rain. Low 65°. Wind east near calm. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch.
Monday
 
 Mostly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 79°. UV index up to 8. Wind east around 2 mph. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch.
Monday night
 
 Mostly cloudy. Patchy light fog after midnight. Low 65°. Wind south-southeast around 3 mph.
Tuesday
 
 Partly to mostly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. Hot. High 87°. UV index up to 9. Wind south around 6 mph, gusting to 16 mph.
Tuesday night
 
 Partly cloudy in the evening, becoming clear after midnight. Patchy light fog after midnight. Low 68°. Wind south around 5 mph.
Wednesday
 
 Sunny. Hot. High 92°. Heat index up to 98°. UV index up to 10. Wind west around 6 mph in the morning, becoming northwest in the afternoon.
Wednesday night
 
 Mostly clear in the evening, becoming clear after midnight. Low 71°. Wind northwest around 4 mph.
Thursday
 
 Sunny. Hot. High 94°. Heat index up to 101°. UV index up to 10. Wind northwest around 4 mph.
Thursday night
 
 Clear in the evening, becoming partly to mostly cloudy after midnight. Low 73°. Wind southwest around 3 mph in the evening, becoming west-northwest after midnight.

WXSIM forecast formatting script by Saratoga-Weather.org.
Animated forecast icons courtesy of www.meteotreviglio.com.