What changed
2026-08-07 20:02 UTC → 2026-08-09 01:03 UTC ·
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On August 1, forecasters warned that a slow‑moving cold front would bring showers and a slight chance of storms to central Wisconsin mid‑week. Temperatures were expected to stay warm, with highs in the low‑ to mid‑80s early in the week and mid‑70s to low‑80s later. The Wisconsin Valley Fair was set to open on Tuesday under mainly dry conditions, though cloud cover and a modest chance of showers or storms were anticipated for Tuesday night and Wednesday, with a low risk of severe weather. By August 5, the outlook shifted as a new cold front was projected to move into the region on Friday. The forecast called for scattered storms in the afternoon and evening, featuring strong wind gusts, downpours, lightning and occasional small hail, while temperatures remained in the mid‑80s. Fair organizers advised attendees to seek shelter if storms passed through the venue. The following Saturday was expected to be clear and dry, but another round of showers and potentially heavier rainfall was possible on Monday as the next significant weather change approached. In early August 2026, a broad heat wave pushed temperatures in central Wisconsin into the low‑ low- to mid‑90s mid-90s, with heat‑index values around 100‑105 °F. heat indices reaching 100-105°F. Scattered thunderstorms were forecast to develop, bringing bring downpours, gusty winds winds, and brief lightning across the fairgrounds. Isolated heavier rain was possible, though flood risk stayed low. Storm activity was expected to continue into the weekend, fairgrounds, with a higher chance of rain on Sunday and Monday as Gulf moisture moved northward, while many areas were projected to remain mostly dry northward. Weather alerts for the region indicated severe storm threats, including the potential for damaging winds, large hail, and heavy rainfall. These conditions coincided with sunshine returning later in broader extreme weather patterns across the week. United States, where high-pressure systems were driving triple-digit heat indices across the Midwest.