Today: Summer is surely in full swing this week as we are about to see yet another dangerous heat wave. Your Wednesday will feature clear skies with an abundant amount of sunshine throughout most of the day. We can’t rule out an isolated shower Wednesday morning from a weak disturbance approaching from the southwest. With most areas remaining dry, temperatures will climb through the 80s in the morning and top out in the lower 90s by the afternoon. By mid morning dew points will start to climb through the 60’s and should end up in the tropical low 70’s by late afternoon. Winds won’t aid much relief as they will start out from the south gusting anywhere from 5-10 mph, but increasing to 10-15 mph during the day and turning more to the southwest which will help draw in that tropical air. With predicted temperatures and dew points being this high, heat indices (feels like temps) could top the triple digits. The National Weather Service has issued a heat advisory for the Milwaukee area and surrounding counties from 11 a.m. to 8 p.m. on Wednesday. If you have plans outside please make sure to take breaks in the shade, drink plenty of water, avoid strenuous activities, and seek air conditioning when possible.
Tonight: Skies will be mostly clear overnight with low temperatures only bottoming out in the high 70’s. Dew points values in the sticky 70’s will persist as well and could increase even more overnight as alike air moves in on a southwest breeze gusting 10 to 15 mph. This would be a good night for air conditioning and running those fans to stay cool overnight.
Tomorrow: This hot and humid pattern will remain for your Thursday, but chances for strong to severe thunderstorms will begin in the evening. High temperatures again will rise into the lower 90’s along with dew points continuing to hold in the 70s, which will once again push heat indices close to 100 degrees. Winds will be blustery in the afternoon gusting anywhere between 10-15 mph out of the southwest. Beyond 3 p.m., skies will begin to cloud over ahead of our next weather maker. During the evening a low pressure system will approach from the northwest. It will bring a line of decaying thunderstorms through southeastern Wisconsin in late evening (around 7 p.m.). Models differ in showing whether these storms will be severe or even hold together. The Storm Prediction Center has most of southern Wisconsin included in a marginal risk of severe weather for Thursday. This is level 1 out of 5 on their severe weather scale, which means scattered strong to severe thunderstorms may make their way through the Milwaukee area. The threat from these storms would be gusty winds. It’s looking unlikely yet there would be a severe weather outbreak as this cold front which is connected to the pressure system is very weak. However, monitor weather conditions regularly in case something changes.
Extended: The tropical pattern continues to hold over much of Wisconsin’s weather. Friday is going to be another humid, but not as hot day as the weak cold front pushes away to our southeast. Highs on your Friday should top out in the upper 70s to near 80 degrees with sticky dewpoints hovering in the 70’s. Skies on Friday should start out mostly sunny and then clouds appear again in the afternoon with some showers and thunderstorms from a disturbance passing to the south of Milwaukee. Winds will predominantly come from the northeast around 5-10 mph which should provide a little relief from the heat. However Saturday and Sunday winds again will gradually turn back to the south and bring more heat. Highs on Saturday and Sunday will be back into the mid 80’s with dew points sticking in the upper 60’s. Also, slight rain chances return Saturday (about 20%); skies should mostly be sunny and feeling humid. Sunday will feature skies that should remain fairly clear, but the heat begins to increase again for early next week.
