National Weather Service Forecast for: Chillum MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 10:53 am EDT May 26, 2026
 
This
Afternoon
This Afternoon: Isolated showers before 4pm. Mostly cloudy, with a high near 76. South wind 3 to 5 mph. Chance of precipitation is 20%.
Isolated
Showers

 Tonight

Tonight: Scattered showers and thunderstorms. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%.
Scattered
Showers and
Patchy Fog

 Wednesday

Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Patchy fog before 10am. High near 80. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers and
Patchy Fog
then Showers
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Patchy fog between 10pm and 1am. Low around 63. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers and
Patchy Fog
then Chance
Showers and
Patchy Fog
 Thursday

Thursday: Sunny, with a high near 79. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Sunny


 Thursday
Night
Thursday Night: Mostly clear, with a low around 56.
Mostly Clear


 Friday

Friday: Sunny, with a high near 77.
Sunny


 Friday
Night
Friday Night: Mostly clear, with a low around 56.
Mostly Clear


 Saturday

Saturday: Mostly sunny, with a high near 74.
Mostly Sunny
Hi 76 °F Lo 64 °F Hi 80 °F Lo 63 °F Hi 79 °F Lo 56 °F Hi 77 °F Lo 56 °F Hi 74 °F

 

This Afternoon
 
 Isolated showers before 4pm. Mostly cloudy, with a high near 76. South wind 3 to 5 mph. Chance of precipitation is 20%.
Tonight
 
 Scattered showers and thunderstorms. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%.
Wednesday
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. Patchy fog before 10am. High near 80. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Patchy fog between 10pm and 1am. Low around 63. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
 
 Sunny, with a high near 79. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Thursday Night
 
 Mostly clear, with a low around 56.
Friday
 
 Sunny, with a high near 77.
Friday Night
 
 Mostly clear, with a low around 56.
Saturday
 
 Mostly sunny, with a high near 74.
Saturday Night
 
 Partly cloudy, with a low around 54.
Sunday
 
 Mostly sunny, with a high near 72.
Sunday Night
 
 Mostly clear, with a low around 55.
Monday
 
 Sunny, with a high near 75.

 

Forecast from NOAA-NWS for Chillum MD.