South Bend, Indiana – Comfortable summer weather will give way to building heat and humidity across Northern Indiana this weekend, with the next opportunity for thunderstorms arriving by late Sunday and continuing into Monday as temperatures approach the 90-degree mark.
According to the National Weather Service Northern Indiana, Friday will remain dry with afternoon highs between 77 and 80 degrees and overnight lows in the mid-50s to around 60. Saturday stays rain-free while temperatures climb into the lower to middle 80s, setting the stage for a much warmer and more humid pattern.
By Sunday, highs are expected to reach 87 to 90 degrees with noticeably higher humidity. A 20% to 40% chance of afternoon and evening thunderstorms develops across Northern Indiana, including South Bend, Elkhart, Warsaw, Plymouth and Michigan City. The unsettled pattern continues Monday, when temperatures climb to 89 to 92 degrees with a 40% to 60% chance of showers and thunderstorms. The National Weather Service notes there is the possibility of severe weather from late Sunday through late Monday, although details on timing and storm intensity will become clearer in later updates.
Residents with weekend outdoor plans should stay hydrated, limit strenuous afternoon activities during the hottest part of the day and keep a reliable way to receive weather alerts if thunderstorms develop. Lightning, heavy downpours and gusty winds could affect travel and outdoor events as the new workweek begins.
Additional watches or advisories may be issued if confidence increases in stronger thunderstorms heading into late Sunday and Monday.
Five-Day Forecast for South Bend, Indiana
- Friday: Partly sunny and dry. High 77–80°F, low 54–60°F.
- Saturday: Sunny and warmer. High 81–85°F, low 64–70°F.
- Sunday: Hot and humid with a 20–40% chance of afternoon and evening thunderstorms. High 87–90°F, low 68–73°F.
- Monday: Hot and humid with a 40–60% chance of showers and thunderstorms. High 89–92°F, low 67–72°F.
