National Weather Service Forecast for: Catonsville MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 10:30 pm EDT Jul 26, 2025
 
Tonight

Tonight: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 74. Southeast wind 3 to 5 mph.  Chance of precipitation is 20%.
Slight Chance
T-storms

Sunday

Sunday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm.  Partly sunny, with a high near 90. South wind around 6 mph becoming southwest in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
T-storms
Likely
Sunday
Night
Sunday Night: Showers and thunderstorms likely, mainly before 8pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Light west wind.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
T-storms
Likely then
Chance
Showers
Monday

Monday: Sunny, with a high near 92. North wind 3 to 5 mph.
Sunny

Monday
Night
Monday Night: Mostly clear, with a low around 75. Calm wind.
Mostly Clear

Tuesday

Tuesday: Sunny, with a high near 95.
Sunny

Tuesday
Night
Tuesday Night: Mostly clear, with a low around 77.
Mostly Clear

Wednesday

Wednesday: Sunny, with a high near 96.
Sunny

Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. Chance of precipitation is 30%.
Chance
T-storms

Lo 74 °F Hi 90 °F Lo 75 °F Hi 92 °F Lo 75 °F Hi 95 °F Lo 77 °F Hi 96 °F Lo 75 °F

 

Tonight
 
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 74. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday
 
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. Partly sunny, with a high near 90. South wind around 6 mph becoming southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Light west wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
Sunny, with a high near 92. North wind 3 to 5 mph.
Monday Night
 
Mostly clear, with a low around 75. Calm wind.
Tuesday
 
Sunny, with a high near 95.
Tuesday Night
 
Mostly clear, with a low around 77.
Wednesday
 
Sunny, with a high near 96.
Wednesday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.
Thursday
 
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Thursday Night
 
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
 
Mostly sunny, with a high near 81.
Friday Night
 
Mostly clear, with a low around 63.
Saturday
 
Sunny, with a high near 81.

 

Forecast from NOAA-NWS for Catonsville MD.