National Weather Service Forecast for: Catonsville MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 4:53 am EDT Jun 22, 2026
 
Today

Today: Scattered showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. East wind 6 to 15 mph becoming south in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Scattered
T-storms then
Showers
 Tonight

Tonight: Showers and possibly a thunderstorm before 11pm, then scattered showers and thunderstorms between 11pm and 2am, then scattered showers after 2am. Low around 66. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers then
Scattered
Showers
 Tuesday

Tuesday: Isolated showers before 2pm. Partly sunny, with a high near 81. Northwest wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Isolated
Showers

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 61. North wind 8 to 11 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 84. North wind 7 to 9 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 65.
Mostly Clear

 Thursday

Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Mostly Sunny
then Chance
T-storms
 Thursday
Night
Thursday Night: A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Chance
T-storms

 Friday

Friday: A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Slight Chance
T-storms then
Showers
Likely
Hi 89 °F Lo 66 °F Hi 81 °F Lo 61 °F Hi 84 °F Lo 65 °F Hi 87 °F Lo 67 °F Hi 87 °F

Hazardous Weather Outlook
 

Today
 
 Scattered showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. East wind 6 to 15 mph becoming south in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 Showers and possibly a thunderstorm before 11pm, then scattered showers and thunderstorms between 11pm and 2am, then scattered showers after 2am. Low around 66. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
 
 Isolated showers before 2pm. Partly sunny, with a high near 81. Northwest wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday Night
 
 Mostly clear, with a low around 61. North wind 8 to 11 mph.
Wednesday
 
 Sunny, with a high near 84. North wind 7 to 9 mph.
Wednesday Night
 
 Mostly clear, with a low around 65.
Thursday
 
 A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Thursday Night
 
 A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Friday
 
 A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Friday Night
 
 Showers likely 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. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Saturday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Saturday Night
 
 A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 20%.
Sunday
 
 Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Catonsville MD.