National Weather Service Forecast for: Catonsville MD
Issued by: National Weather Service Baltimore, MD/Washington, D.C.
Updated: 4:53 pm EDT Jul 16, 2026
 
Tonight

Tonight: Scattered showers and thunderstorms, mainly before 8pm. Widespread smoke, mainly between 9pm and 5am. Clear, then becoming cloudy toward daybreak, with a low around 72. West wind 5 to 11 mph becoming northeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Scattered
T-storms then
Smoke
 Friday

Friday: Widespread smoke, mainly after 11am. Mostly sunny, with a high near 89. Light and variable wind.
Smoke

 Friday
Night
Friday Night: A slight chance of showers and thunderstorms after 2am. Widespread smoke, mainly before 3am. Partly cloudy, with a low around 72. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Smoke then
Slight Chance
T-storms
 Saturday

Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Widespread smoke before noon. High near 89. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
Showers
 Saturday
Night
Saturday Night: Showers and possibly a thunderstorm, mainly before 2am, then a slight chance of showers and thunderstorms after 2am. Low around 72. Southwest wind around 8 mph. Chance of precipitation is 80%.
Showers

 Sunday

Sunday: Mostly sunny, with a high near 86.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 66.
Mostly Clear

 Monday

Monday: Sunny, with a high near 85.
Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 70.
Partly Cloudy
Lo 72 °F Hi 89 °F Lo 72 °F Hi 89 °F Lo 72 °F Hi 86 °F Lo 66 °F Hi 85 °F Lo 70 °F

Air Quality Alert
Hazardous Weather Outlook
Heat Advisory
 

Tonight
 
 Scattered showers and thunderstorms, mainly before 8pm. Widespread smoke, mainly between 9pm and 5am. Clear, then becoming cloudy toward daybreak, with a low around 72. West wind 5 to 11 mph becoming northeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Friday
 
 Widespread smoke, mainly after 11am. Mostly sunny, with a high near 89. Light and variable wind.
Friday Night
 
 A slight chance of showers and thunderstorms after 2am. Widespread smoke, mainly before 3am. Partly cloudy, with a low around 72. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Saturday
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Widespread smoke before noon. High near 89. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers and possibly a thunderstorm, mainly before 2am, then a slight chance of showers and thunderstorms after 2am. Low around 72. Southwest wind around 8 mph. Chance of precipitation is 80%.
Sunday
 
 Mostly sunny, with a high near 86.
Sunday Night
 
 Mostly clear, with a low around 66.
Monday
 
 Sunny, with a high near 85.
Monday Night
 
 Partly cloudy, with a low around 70.
Tuesday
 
 A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Tuesday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Wednesday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Wednesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
 
 Mostly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Catonsville MD.