Chicago, Illinois, is bracing for a shift in weather starting Sunday, July 20, with rain chances returning in the afternoon as a warm, humid air mass moves into the region. Drivers along I-55 and I-290 should be prepared for wet pavement and gusty winds starting mid-afternoon, as a 30% chance of showers and thunderstorms is forecasted after 3 p.m. The National Weather Service predicts highs near 71°F, with north-northeast winds gusting up to 25 mph. While rainfall amounts will be light, isolated downpours could reduce visibility and slow traffic, particularly in Cook and DuPage Counties.
A Brief Break and Rising Heat
By Monday, July 21, skies will clear, and temperatures will rebound to around 79°F under mostly sunny conditions. However, the calm weather won’t last long. A midweek heatwave is expected to surge in by Wednesday, pushing temperatures up to 95°F. Overnight lows will remain in the mid-70s, making it difficult to cool off and providing little relief from the heat. Utility companies are advising residents to conserve energy during peak hours and stay hydrated as the heat builds.
Hot Days Ahead
Tuesday and Wednesday will be dry but hot, especially across urban areas where pavement temperatures could exceed 100°F. Heat-sensitive groups, such as children and older adults, are urged to avoid prolonged outdoor exposure, particularly during the midweek heat. The heatwave will make conditions uncomfortable, and residents are advised to take precautions to stay cool.
Storms Expected Later in the Week
Looking ahead, storm chances will return Thursday night into Friday, July 25, as another weather system approaches the region. These storms could disrupt evening commutes, so it’s important to stay updated on the forecast for any changes. Rain could linger into Friday, adding another round of weather challenges for the city.
Five-Day Weather Forecast for Chicago (July 20-25)
Sunday, July 20: Slight chance of storms after 3 p.m.; high of 71°F
Monday, July 21: Mostly sunny; high of 79°F
Tuesday, July 22: Mostly sunny; high of 86°F
Wednesday, July 23: Hot and sunny; high of 95°F
Thursday, July 24: Sunny early, chance of storms overnight; high of 89°F
Friday, July 25: Chance of storms; high of 84°F
Chicago will experience a mix of storms and hot temperatures throughout the week. While Sunday brings rain and gusty winds, the heat will return quickly, with highs nearing 95°F by Wednesday. Storms may also return later in the week, potentially disrupting commutes. It’s crucial for residents to stay prepared for changing conditions, conserve energy, and take precautions during the heatwave.
