Weather in Grantsburg, WI
Updated 2026-08-11 10:15 local time · ZIP codes 54840
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
74°3% rain84°1% rain86°1% rain88°1% rain89°1% rain90°1% rain90°1% rain90°1% rain89°1% rain87°1% rain82°1% rain
78°1% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 3%).
It feels like 74°F with winds near 5 mph.
74°F, 3% rain chance and 5 mph wind.
Visibility is around 6 mi; gusts may reach 16 mph.
Current temperature is 74°F, wind 5 mph, rain chance up to 3%.
UV index is 3.
Grantsburg weather today
Sunny and 74°F in Grantsburg, WI. Today's high is 90°F with a 36% rain chance. Winds are around 5 mph with gusts near 6 mph. Relative humidity is 58%, pressure is 29.89 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Grantsburg
Sunrise is at 06:06 AM and sunset is at 08:25 PM. Tomorrow's forecast calls for Sunny with a high near 93°F and a low near 59°F. The maximum rain chance is 3%.