National Weather Service Forecast for: Brownsburg IN
Issued by: National Weather Service Indianapolis, IN
Updated: 5:15 am EDT Jun 22, 2026
 
Overnight

Overnight: Isolated showers. Cloudy, with a steady temperature around 69. West southwest wind around 6 mph. Chance of precipitation is 20%.
Isolated
Showers

 Monday

Monday: Scattered showers, mainly before 10am. Cloudy, with a high near 70. North wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Scattered
Showers then
Mostly Cloudy
 Monday
Night
Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 55. North wind 5 to 9 mph.
Decreasing
Clouds

 Tuesday

Tuesday: Sunny, with a high near 76. North wind 3 to 6 mph.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 56. North wind around 5 mph becoming calm in the evening.
Mostly Clear

 Wednesday

Wednesday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
T-storms
 Wednesday
Night
Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 62. South wind 3 to 5 mph.
Chance
T-storms

 Thursday

Thursday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 79. Southwest wind 5 to 9 mph.
Chance
T-storms

 Thursday
Night
Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Chance
T-storms then
Chance
Showers
Lo 69 °F Hi 70 °F Lo 55 °F Hi 76 °F Lo 56 °F Hi 78 °F Lo 62 °F Hi 79 °F Lo 61 °F

 

Overnight
 
 Isolated showers. Cloudy, with a steady temperature around 69. West southwest wind around 6 mph. Chance of precipitation is 20%.
Monday
 
 Scattered showers, mainly before 10am. Cloudy, with a high near 70. North wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Monday Night
 
 Mostly cloudy, then gradually becoming mostly clear, with a low around 55. North wind 5 to 9 mph.
Tuesday
 
 Sunny, with a high near 76. North wind 3 to 6 mph.
Tuesday Night
 
 Mostly clear, with a low around 56. North wind around 5 mph becoming calm in the evening.
Wednesday
 
 A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
 
 A 50 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 62. South wind 3 to 5 mph.
Thursday
 
 A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 79. Southwest wind 5 to 9 mph.
Thursday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
 
 A chance of showers, with thunderstorms also possible after 8am. Partly sunny, with a high near 78. Light and variable wind. Chance of precipitation is 30%.
Friday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Saturday Night
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Sunday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Brownsburg IN.