Tonight will be partly cloudy, mild and muggy with a slight chance of showers and thunderstorms. Some areas of fog may develop. Temperatures will fall to the upper 70s by late evening; overnight low temperatures will fall to around 70 degrees by morning.
Saturday will be variably cloudy, hot, and humid with scattered showers and thunderstorms, especially in the afternoon. High temperatures will be around 90 degrees, with afternoon heat index values between 95 and 100 degrees. Showers and thunderstorms will continue Saturday night with temperatures only dropping into the middle 70s. Sunday will be partly sunny, hot, and humid with a chance of thunderstorms, mainly in the morning. High temperatures will be in the lower 90s with heat index values in the middle 90s to near 100 degrees.
Monday and Tuesday will be partly sunny, very warm and humid with high temperatures in the middle 80s and heat index values in the upper 80s and lower 90s. A chance of showers and thunderstorms will develop on Tuesday night.
Wednesday will be variably cloudy, warm and humid with scattered showers and thunderstorms. High temperatures will reach the middle 80s with heat index values in the upper 80s to the lower 90s. Thursday and Friday will be variably cloudy, warm, and continued humid with a chance of showers and thunderstorms. High temperatures will be in the lower 80s.
Next weekend should be warm, but less humid with high temperatures near 80 degrees. Showers and thunderstorms will end early on Saturday, with skies then becoming partly sunny for the rest of the weekend.
***EXCESSIVE HEAT WARNING UNTIL 7 PM FOR AREAS WEST OF RICHLAND CENTER***
***HEAT ADVISORY UNTIL 7 PM FOR DANE COUNTY AND AREAS TO THE WEST AND SOUTH***
TONIGHT:
Partly cloudy, mild, and muggy with a slight chance of showers and thunderstorms; patchy fog possible.
Low: 70
Wind: Light and Variable
SATURDAY:
Variable cloudiness, hot, and humid with scattered showers and thunderstorms.
High: 90; Heat Index: 95 to 100
Wind: S/SE 8-15 MPH
SATURDAY NIGHT:
Mostly cloudy, mild, and muggy with scattered showers and thunderstorms; patchy fog is possible.
Low: 74
Wind: S 8-15 MPH
SUNDAY:
Partly sunny, hot, and humid with a chance of showers and thunderstorms, mainly in the morning.
High: 91; Heat Index: 95 to 100
Wind: W/NW 8-15 MPH
MONDAY:
Partly sunny, very warm, and humid.
Low: 68
High: 85; Heat Index: 87 to 92
TUESDAY:
Partly sunny, very warm, and humid (a chance of showers and thunderstorms at night).
Low: 65
High: 86; Heat Index: 88 to 93
WEDNESDAY:
Variable cloudiness, warm, and humid with scattered showers and thunderstorms.
Low: 66
High: 84; Heat Index: 86 to 91
THURSDAY:
Variable cloudiness, warm, and humid with a chance of showers and thunderstorms.
Low: 66
High: 81
FRIDAY:
Variable cloudiness, warm, and humid with a chance of showers and thunderstorms.
Low: 61
High: 80
SATURDAY:
Any showers ending early, otherwise partly sunny and pleasantly warm, but less humid.
Low: 62
High: 80
SUNDAY:
Partly sunny and pleasant.
Low: 57
High: 80
NOTES:
An EXCESSIVE HEAT WARNING is in effect until 7 PM Saturday evening for eastern Iowa and northwestern Illinois. In Iowa, this includes the counties of DELAWARE and DUBUQUE. In Illinois, this includes the counties of JO DAVIESS and STEPHENSON.
An EXCESSIVE HEAT WARNING is in effect until 7 PM for northeastern Iowa, and for southwestern, and parts of west-central Wisconsin. In Iowa, this includes the counties of ALLAMAKEE and CLAYTON. In Wisconsin, this includes the counties of VERNON, RICHLAND, CRAWFORD, and GRANT (this includes the La Crosse metropolitan area).
A HEAT ADVISORY is in effect until 7 PM for north-central and northeastern Illinois, and parts of west-central, south-central, and southeastern Wisconsin. In Illinois, this includes the counties of WINNEBAGO, BOONE, and McHENRY (this includes the Rockford and Chicago metropolitan areas). In Wisconsin, this includes the counties of MONROE, JUNEAU, ADAMS, SAUK, IOWA, DANE, JEFFERSON, LAFAYETTE, GREEN, ROCK, and WALWORTH (this includes the Madison and Milwaukee metropolitan areas).
The Storm Prediction Center says is a SLIGHT RISK of severe thunderstorms Saturday and Saturday night over all of Minnesota (except for the far northeast),, the northern third of Iowa, and much of the western half of Wisconsin (west of an Ashland to Stevens Point to Prairie du Chien line), and a MARGINAL RISK of severe thunderstorms over the rest of Minnesota, the rest of Iowa, the northern quarter of Illinois, and the rest of Wisconsin. A weak warm front will approach southern Wisconsin by late Saturday afternoon, as a cold front moves into western Minnesota. Strong to severe thunderstorms may develop from later Saturday afternoon into Saturday night along both of these fronts. High winds, hail, and heavy rainfall will be the main threats, although an isolated tornado may be possible where thunderstorm development initially takes place, probably in Minnesota. Thunderstorms may form a squall line with a greater potential for damaging winds during the evening from eastern Minnesota and northern Iowa into western Wisconsin. The line of thunderstorms will weaken overnight, although isolated severe thunderstorms with a threat for high winds and hail may still be possible into eastern Wisconsin and northern Illinois.
There is a MARGINAL RISK of severe thunderstorms for Sunday and Sunday night for the northeastern third of Illinois, and the eastern third of Wisconsin (east of an Iron Mountain, MI to Stevens Point to Darlington line). Isolated severe thunderstorms may be possible on Sunday morning as thunderstorm activity from Saturday night moves through Wisconsin and Illinois. As a cold front passes through southern Wisconsin and northern Illinois, additional thunderstorms may form along the front. Isolated severe thunderstorms with high winds, hail, and heavy rain are the main threats. The severe weather threat should end with the passage of the cold front on Sunday afternoon.
Interactive radar
Radar images (Mobile radar images)
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