Brown County, WI Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Brown County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a low around 61. South southwest wind around 3 mph.
County Weather Overview
This county weather page brings together forecast coverage for Brown County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Brown County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 4, 2026
- Latest sync
- Aug 29, 2026 5:03 AM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Brown County
Tuesday looks like the warmest upcoming period in Brown County at 86 degrees F.
Overnight is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Saturday at about 3 to 9 mph SW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 29, 2026 5:03 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- GRB
- Radar station
- KGRB
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain showers likely after 10am. Mostly cloudy. High near 76, with temperatures falling to around 68 in the afternoon. Southwest wind 3 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Cloudy, with a low around 65. South wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Heat index values as high as 86. South wind 6 to 9 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East wind 3 to 7 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7am. Partly sunny, with a high near 86. Chance of precipitation is 20%.
A chance of rain showers between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 62. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Aug 29
|
Mostly Cloudy
|
61°F |
3 mph
SSW
|
|
Saturday
Aug 29
|
Rain Showers Likely
|
76°F |
3 to 9 mph
SW
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
65°F |
8 mph
S
|
|
Sunday
Aug 30
|
Chance Showers And Thunderstorms
|
82°F |
6 to 9 mph
S
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms
|
66°F |
3 to 7 mph
E
|
|
Monday
Aug 31
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
85°F |
5 to 8 mph
S
|
|
Monday Night
Aug 31
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
69°F |
2 to 7 mph
SSW
|
|
Tuesday
Sep 1
|
Slight Chance Showers And Thunderstorms then Partly Sunny
|
86°F |
2 to 7 mph
SW
|
|
Tuesday Night
Sep 1
|
Chance Rain Showers
|
67°F |
5 mph
W
|
|
Wednesday
Sep 2
|
Chance Showers And Thunderstorms
|
84°F |
5 mph
NNW
|
|
Wednesday Night
Sep 2
|
Chance Showers And Thunderstorms
|
63°F |
3 mph
NE
|
|
Thursday
Sep 3
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
81°F |
5 mph
NE
|
|
Thursday Night
Sep 3
|
Slight Chance Rain Showers
|
62°F |
5 mph
SE
|
|
Friday
Sep 4
|
Slight Chance Rain Showers
|
81°F |
3 to 7 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Brown County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Brown County.
Largest mapped city population in this region: 25,014.
