Chicago wakes up mostly clear and brisk on Monday morning, April 6, 2026, with temperatures hovering near 41°F. The thermometer will make a run toward a high near 49°F, but do not get too attached to it. Readings slide back into the mid 40s Monday afternoon as a stiff northwest breeze kicks in and takes the edge off any warmth.
Afternoon Gusts and the Commute
By Monday afternoon, April 6, northwest winds around 15 mph will crank up, with frequent gusts to about 30 mph. Some sun breaks could stir the atmosphere just enough for a few stronger bursts in spots. High-profile vehicles, cyclists and pedestrians on exposed bridges or along the lakefront should brace for sudden, attention-getting gusts and build in a little extra travel time. Before the evening rush, it is a good idea to tie down lightweight patio furniture and yard items that might try to go flying.
Lake-Edge Flurries Tonight
Between about 9 p.m. and 10 p.m. Monday, April 6, a slight chance of rain showers sneaks in, followed by a brief window of rain-and-snow showers Monday night into Tuesday morning, April 6–7. Most inland neighborhoods are likely to stay dry, but a few shoreline spots in northeast Illinois and northwest Indiana could see a dusting to a half-inch of snow before the showers wrap up. Overnight lows will drop into the upper 20s Monday night, which bumps up the odds that any lingering showers near the lake arrive as flakes instead of drops.
Boaters And The Lake
A Small Craft Advisory is in effect for Illinois and Indiana nearshore waters from 11 a.m. Monday, April 6, through 10 a.m. Tuesday, April 7, the National Weather Service Chicago says. Expect choppy water and gusty conditions on Lake Michigan, and keep small or less-prepared boats at the dock while the advisory remains in effect. Runners and cyclists hugging the shoreline should also be ready for some spray and punchy near-shore gusts along the lakefront.
Looking Ahead This Week
Temperatures rebound by midweek. Wednesday, April 8, 2026, is on track to be much milder, with highs near 63°F and a brisk southerly breeze that could gust into the 20s. Showers and a chance of thunderstorms return later in the week and into the weekend, so it is worth keeping an umbrella parked by the door for any outdoor plans. For context on the developing storm pattern earlier this week, see our wind whiplash coverage.
Practical Tips
Tie down or bring in loose outdoor items, allow extra time for the commute, and use caution near the lakeshore if those late flurries show up Monday night. Check updated forecasts before heading out and, if you are planning to be on the water, follow all posted marine advisories.
