Partly cloudy skies this evening will become mostly cloudy overnight with a chance of showers and thunderstorms late as a warm front approaches southern Wisconsin. Patchy fog is possible. Temperatures will fall into the lower 70s by late evening; overnight low temperatures will fall to the upper 60s by morning.
The warm front will become stationary to the south of Wisconsin on Tuesday into Wednesday. Tuesday will be variably cloudy, very warm, and humid with a chance of showers and thunderstorms. High temperatures will be in the middle 80s, with heat index values between 90 and 95 degrees. Tuesday night will be mostly cloudy, mild, and muggy with scattered showers and thunderstorms and some patchy fog. Low temperatures will fall into the upper 60s by early Wednesday.
The stationary front will begin working northward as a warm front on Wednesday. Temperatures will continue to warm up for the middle part of the week. Wednesday will be partly sunny, very warm and humid with a slight chance of showers and thunderstorms. High temperatures will reach the upper 80s, and heat index values will be in the lower to middle 90s. Thursday will be partly sunny, hot and humid with high temperatures near 90 degrees, and heat index values in the upper 90s and lower 100s.
A cold front will move through Wisconsin on Thursday night. There is a slight chance of showers and thunderstorms later Thursday afternoon, but the best chance of showers and thunderstorms will be on Thursday night with the passage of the cold front. Any showers and thunderstorms will end on Friday morning, with skies becoming partly sunny. It won't be quite as warm, but it should turn less humid by Friday afternoon with high temperatures in the middle 80s, and heat index values reaching the upper 80s.
For the weekend, Saturday will be partly sunny and warm with high temperatures in the lower 80s. Sunday will be partly sunny and warm with a slight chance of showers and thunderstorms. High temperatures will reach the lower 80s. Monday will be a repeat of Sunday with partly sunny skies, a slight chance of showers and thunderstorms and high temperatures in the lower 80s.
TONIGHT:
Partly cloudy this evening, then becoming mostly cloudy, mild, and muggy with a chance of showers and thunderstorms, mainly late; patchy fog is possible.
Low: 67
High: SE 5-10 MPH
TUESDAY:
Variable cloudiness, very warm, and humid with a chance of showers and thunderstorms.
High: 85; Heat Index: 90 to 95
Wind: S/SE 8-15 MPH
TUESDAY NIGHT:
Mostly cloudy and muggy with scattered showers and thunderstorms; patchy fog is possible.
Low: 69
Wind: Light and Variable
WEDNESDAY:
Partly sunny, very warm, and humid with a slight chance of a shower or a thunderstorm.
High: 87; Heat Index: 91 to 96
Wind: E/SE 5-10 MPH
THURSDAY:
Partly sunny, hot, and humid with a slight chance of showers and thunderstorms, mainly late in the day (becoming mostly cloudy with showers and thunderstorms likely at night).
Low: 70
High: 90; Heat Index: 96 to 101
FRIDAY:
Any showers and thunderstorms ending in the morning, then becoming partly sunny, not quite as warm, and turning less humid.
Low: 67
High: 85; Heat Index: 85 to 90
SATURDAY:
Partly sunny and warm.
Low: 61
High: 81
SUNDAY:
Partly sunny and warm with a slight chance of showers and thunderstorms.
Low: 60
High: 81
MONDAY:
Partly sunny and continued warm with a slight chance of showers and thunderstorms.
Low: 61
High: 83
NOTES:
The Storm Prediction Center says there is a SLIGHT RISK of severe thunderstorms for tonight across much of the western half of Minnesota, and the northwestern third of Iowa, and a MARGINAL RISK of severe thunderstorms over the rest of Minnesota (except for the northeastern Arrowhead region), the rest of Iowa, and far western Wisconsin (west of a Superior to Sparta to Darlington line). As a hot and humid air mass builds eastward into the Midwest, a warm front from eastern Nebraska to northern Missouri will move to southern Minnesota to eastern Iowa before becoming stationary by early Tuesday morning. Thunderstorms will develop along and ahead of the front from southwestern Minnesota into western Iowa, moving eastward toward western Wisconsin by early Tuesday morning. High winds, hail, and heavy rainfall are the main threats, with the severe thunderstorm activity becoming more isolated as it moves into eastern Minnesota and far western Wisconsin overnight.
There is a MARGINAL RISK of severe thunderstorms Tuesday and Tuesday night over much of the eastern half of Minnesota, the eastern half of Iowa, the northwestern third of Illinois and all of Wisconsin. Weakening thunderstorms early on Tuesday morning over western Wisconsin and a stationary front across Iowa and Illinois will provide the focus areas for thunderstorms development on Tuesday afternoon and Tuesday night. Isolated severe thunderstorms are possible, with high winds, hail and heavy rainfall as the main threats.
There is a threat of severe thunderstorms on Thursday and Thursday night across most of Wisconsin. A cold front will move through Wisconsin on Thursday night, moving through a hot and humid air mass. A few severe thunderstorms are possible, with high winds, hail and heavy rainfall as the main threats.
Interactive radar
Radar images (Mobile radar images)
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