Patchy fog is expected across northern Wisconsin and the lakeshore this morning. The fog will be locally dense, with visibilities around 1/4 mile or less. If you plan to travel this morning, be alert for rapidly changing visibilities. If you encounter dense fog, slow down and use your low beam headlights.
Local weather forecast
Weather in Argonne, WI
Updated 2026-09-26 11:45 local time · ZIP codes 54511
Now61°F
Cloudy
High / Low66° / 52°
Rain chance12%
Wind7 mph
Weather alerts
1Active alerts
Hourly
Next hours
Now61°7% rain
61°7% rain1 PM
65°10% rain
65°10% rain2 PM65°8% rain
65°8% rain3 PM66°9% rain
66°9% rain4 PM65°10% rain
65°10% rain5 PM62°10% rain
62°10% rain6 PM64°13% rain
64°13% rain7 PM
61°14% rain
61°14% rain8 PM
58°15% rain
58°15% rain9 PM55°19% rain
55°19% rain10 PM
54°14% rain
54°14% rain11 PM53°19% rain
53°19% rainForecast
3-day weather forecast
Today2026-09-26
66° 52°Overcast
Rain 12%Gust 8 mph
Tomorrow2026-09-27
63° 50°Overcast
Rain 14%Gust 5 mph
Monday2026-09-28
70° 54°Sunny
Rain 8%Gust 6 mph
Conditions
Weather details
Feels like54°F
Humidity47%
Pressure30.23 inHg
Visibility6 mi
Wind7 mph SE
Wind gusts12 mph
Precipitation0.00 in
UV index3
Daylight
Sunrise, sunset and moon
Sunrise06:47 AM
Sunset06:46 PM
Moonrise06:31 PM
Moon phaseFull Moon
Next 24 hours
Key weather changes ahead
Warmest hour3 PM · 66°F
Coolest hour5 AM · 50°F
Highest rain chance12 AM · 22%
Strongest gusts5 PM · 12 mph
Practical guide
Weather insights for today
Umbrella not essential
Rain chance stays relatively low over the next 12 hours (up to 19%).
Light layers should work
It feels like 54°F with winds near 7 mph.
Best window: 2 PM
65°F, 8% rain chance and 8 mph wind.
Driving conditions look generally normal
Visibility is around 6 mi; gusts may reach 12 mph.
Good conditions for an easy run
Current temperature is 61°F, wind 7 mph, rain chance up to 19%.
Moderate UV protection recommended
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Argonne
Wisconsin has warm summers, cold winters and strong Great Lakes influence near Lakes Michigan and Superior. Lake-effect snow can be important in favored areas.
Argonne is part of the Midwest weather region. The forecast point is near 45.66°N latitude and 88.88°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Argonne weather today
Cloudy and 61°F in Argonne, WI. Today's high is 66°F with a 12% rain chance. Winds are around 7 mph with gusts near 12 mph. Relative humidity is 47%, pressure is 30.23 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Argonne
Sunrise is at 06:47 AM and sunset is at 06:46 PM. Tomorrow's forecast calls for Overcast with a high near 63°F and a low near 50°F. The maximum rain chance is 14%.
Nearby
Weather near Argonne
Wisconsin
View state page →Popular cities in Wisconsin
Explore more weather
Browse Midwest →