Grantsburg, WI Weather Forecast
Local 7-day forecast
Widespread Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grantsburg, WI in one place.
Widespread fog before 9am. Mostly sunny, with a high near 68. Northeast wind 0 to 5 mph.
Local Weather Overview
This forecast page for Grantsburg, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 14, 2026 11:13 PM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Grantsburg, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 14, 2026 11:13 PM CDT
- Forecast office
- DLH
- Source
- NOAA / NWS
Daily Outlook
This Week in Grantsburg
Friday looks like the warmest upcoming period in Grantsburg at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 24 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 14, 2026 11:13 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DLH
- Radar station
- KDLH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain between 7pm and 1am. Mostly clear, with a low around 42. Northeast wind around 0 mph. Chance of precipitation is 20%.
Sunny, with a high near 74. Southeast wind 0 to 10 mph, with gusts as high as 20 mph.
Partly cloudy, with a low around 52. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
A slight chance of rain between 7am and 1pm, then rain likely and a chance of thunderstorms. Partly sunny, with a high near 76. South wind 5 to 15 mph, with gusts as high as 25 mph. New rainfall amounts between a tenth and quarter of an inch possible.
Rain likely and a chance of thunderstorms. Mostly cloudy, with a low around 32. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
A chance of rain before 10am, then a chance of snow. Mostly cloudy, with a high near 41. Northwest wind around 15 mph, with gusts as high as 25 mph.
A chance of snow before 1am. Mostly cloudy, with a low around 24. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly sunny, with a high near 46. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 26. Northeast wind around 5 mph.
Sunny, with a high near 56. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 36. Southeast wind around 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 67. South wind 5 to 10 mph, with gusts as high as 20 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Widespread Fog then Mostly Sunny
|
68°F |
0 to 5 mph
NE
|
|
Wednesday Night
Apr 15
|
Slight Chance Light Rain
|
42°F |
0 mph
|
|
Thursday
Apr 16
|
Sunny
|
74°F |
0 to 10 mph
SE
|
|
Thursday Night
Apr 16
|
Partly Cloudy
|
52°F |
5 to 10 mph
SE
|
|
Friday
Apr 17
|
Light Rain Likely
|
76°F |
5 to 15 mph
S
|
|
Friday Night
Apr 17
|
Rain Likely
|
32°F |
10 to 15 mph
NW
|
|
Saturday
Apr 18
|
Chance Light Snow
|
41°F |
15 mph
NW
|
|
Saturday Night
Apr 18
|
Chance Light Snow
|
24°F |
5 to 15 mph
NW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
46°F |
5 to 10 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
26°F |
5 mph
NE
|
|
Monday
Apr 20
|
Sunny
|
56°F |
5 to 10 mph
SE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
36°F |
10 mph
SE
|
|
Tuesday
Apr 21
|
Sunny
|
67°F |
5 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grantsburg.
