Local weather forecast

Weather in Merrimac, WI

Updated 2026-08-11 12:45 local time · ZIP codes 53561

Sunny
Now76°F

Sunny

High / Low83° / 68°
Rain chance75%
Wind6 mph
Weather alerts

Active alerts

2
Severe Thunderstorm Watch issued August 11 at 10:50AM CDT until August 11 at 2:00PM CDT by NWS Milwaukee/Sullivan WI

SEVERE THUNDERSTORM WATCH 563 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 9 COUNTIES IN SOUTH CENTRAL WISCONSIN DANE GREEN ROCK IN SOUTHEAST WISCONSIN JEFFERSON KENOSHA MILWAUKEE RACINE WALWORTH WAUKESHA THIS INCLUDES THE CITIES OF BELOIT, BRODHEAD, BROOKFIELD, DELAVAN, EAST TROY, ELKHORN, FORT ATKINSON, JANESVILLE, JEFFERSON, KENOSHA, LAKE GENEVA, MADISON, MENOMONEE FALLS, MILWAUKEE, MONROE, MUSKEGO, NEW BERLIN, RACINE, WATERTOWN, WAUKESHA, AND WHITEWATER.

Severe Thunderstorm Watch issued August 11 at 7:22AM CDT until August 11 at 2:00PM CDT by NWS Milwaukee/Sullivan WI

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 563 IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 12 COUNTIES IN SOUTH CENTRAL WISCONSIN DANE GREEN IOWA LAFAYETTE ROCK SAUK IN SOUTHEAST WISCONSIN JEFFERSON KENOSHA MILWAUKEE RACINE WALWORTH WAUKESHA THIS INCLUDES THE CITIES OF ARGYLE, BARABOO, BARNEVELD, BELMONT, BELOIT, BENTON, BLANCHARDVILLE, BRODHEAD, BROOKFIELD, DARLINGTON, DELAVAN, DODGEVILLE, EAST TROY, ELKHORN, FORT ATKINSON, JANESVILLE, JEFFERSON, KENOSHA, LAKE GENEVA, MADISON, MENOMONEE FALLS, MILWAUKEE, MINERAL POINT, MONROE, MUSKEGO, NEW BERLIN, PRAIRIE DU SAC, RACINE, REEDSBURG, SAUK CITY, SHULLSBURG, WATERTOWN, WAUKESHA, AND WHITEWATER.

Hourly

Next hours

NowSunny76°27% rain
2 PMSunny83°8% rain
3 PMSunny80°8% rain
4 PMSunny81°7% rain
5 PMSunny83°6% rain
6 PMSunny81°7% rain
7 PMSunny78°8% rain
8 PMSunny75°10% rain
9 PMClear74°10% rain
10 PMClear73°12% rain
11 PMClear72°13% rain
12 AMClear72°16% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
83° 68°Sunny
Rain 75%Gust 8 mph
Tomorrow2026-08-12
Sunny
83° 68°Sunny
Rain 70%Gust 8 mph
Thursday2026-08-13
Sunny
82° 67°Sunny
Rain 57%Gust 7 mph
Conditions

Weather details

Feels like80°F
Humidity78%
Pressure29.92 inHg
Visibility10 mi
Wind6 mph SSE
Wind gusts10 mph
Precipitation0.00 in
UV index6
Daylight

Sunrise, sunset and moon

Sunrise05:59 AM
Sunset08:08 PM
Moonrise03:55 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella not essential

Rain chance stays relatively low over the next 12 hours (up to 16%).

Light layers should work

It feels like 80°F with winds near 6 mph.

Best window: 8 PM

75°F, 10% rain chance and 5 mph wind.

Driving conditions look generally normal

Visibility is around 10 mi; gusts may reach 10 mph.

Good conditions for an easy run

Current temperature is 76°F, wind 6 mph, rain chance up to 16%.

High UV protection needed

UV index is 6. Sunscreen, shade and protective clothing are recommended.

Merrimac weather today

Sunny and 76°F in Merrimac, WI. Today's high is 83°F with a 75% rain chance. Winds are around 6 mph with gusts near 10 mph. Relative humidity is 78%, pressure is 29.92 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Merrimac

Sunrise is at 05:59 AM and sunset is at 08:08 PM. Tomorrow's forecast calls for Sunny with a high near 83°F and a low near 68°F. The maximum rain chance is 70%.

Nearby

Weather near Merrimac

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