National Weather Service Forecast for: Frederick MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 10:53 pm EDT Sep 12, 2026
 
Overnight

Overnight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Patchy fog after 2am. Low around 69. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers and
Patchy Fog

 Sunday

Sunday: Showers likely and possibly a thunderstorm before 7am, then scattered showers and thunderstorms between 7am and 8am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 86. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely and
Patchy Fog
then Partly
Sunny
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 67. Light west wind.
Partly Cloudy


 Monday

Monday: Mostly sunny, with a high near 78. North wind 7 to 10 mph.
Mostly Sunny


 Monday
Night
Monday Night: Mostly clear, with a low around 52. Light northeast wind.
Mostly Clear


 Tuesday

Tuesday: Sunny, with a high near 79.
Sunny


 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 57.
Mostly Clear


 Wednesday

Wednesday: Sunny, with a high near 82.
Sunny


 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 62.
Mostly Clear
Lo 69 °F Hi 86 °F Lo 67 °F Hi 78 °F Lo 52 °F Hi 79 °F Lo 57 °F Hi 82 °F Lo 62 °F

Hazardous Weather Outlook
 

Overnight
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Patchy fog after 2am. Low around 69. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 Showers likely and possibly a thunderstorm before 7am, then scattered showers and thunderstorms between 7am and 8am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 86. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 Partly cloudy, with a low around 67. Light west wind.
Monday
 
 Mostly sunny, with a high near 78. North wind 7 to 10 mph.
Monday Night
 
 Mostly clear, with a low around 52. Light northeast wind.
Tuesday
 
 Sunny, with a high near 79.
Tuesday Night
 
 Mostly clear, with a low around 57.
Wednesday
 
 Sunny, with a high near 82.
Wednesday Night
 
 Mostly clear, with a low around 62.
Thursday
 
 Sunny, with a high near 85.
Thursday Night
 
 A slight chance of showers. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Friday
 
 A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 40%.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Saturday
 
 A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Frederick MD.