August in Chicago, IL: variable for golf — mixed conditions — check the live score. Best tee times: mid-morning through early afternoon.
| Average August Weather | |
|---|---|
| Avg daily high | 79°F |
| Avg daily low | 66°F |
| Rainy days | 16 / mo |
| Avg peak wind | 12.9 mph |
August sits in a narrow window between Chicago's peak heat and its first real taste of autumn. Coming out of July, almost nothing changes on paper — one degree cooler at the high, identical precipitation days, and wind that is marginally calmer at 12.9 mph, the calmest of any month all year. That stability makes August feel like a continuation of summer, but the direction of travel matters: you are closer to September than you were a month ago.
In practical terms, August mornings start warm at 66F and afternoons reach 79F — solidly within the 60–80F comfort range for most of the day. The 13F daily swing is modest, so a single mid-layer handles most rounds. The catch is rain: 16 precip days ties August for the wettest month of the year alongside April, May, and July. Plan for interruptions, not cancellations.
With 16 precipitation days spread across the month, mid-week morning tee times give you the best odds of a dry round — weekends fill fast and afternoon storms are common in Chicago's August heat. Book at least a week out for any lakeside or premium public course, since summer demand stays high right through Labor Day. See how conditions rate hour by hour on our playability scale.
August and July are nearly identical twins — a 1F drop in the high, the same 16 rainy days, and just 0.2 mph less peak wind — so golfers moving from July into August will notice almost no change in conditions. The real shift comes leaving August for September, when the high falls 4F to 75F, precipitation days drop by three to 13, and wind actually nudges up 1.2 mph to 14.1 mph. September trades some warmth and wetness for cleaner windows between storms.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for Chicago, IL for the current playability rating, hourly wind, temperature, and the recommended tee time window.
← July in Chicago, IL • September in Chicago, IL →
August is a functional but imperfect month. Temperatures sit in the comfortable 66–79F range all day and wind is at its calmest point of the year at 12.9 mph average peak. The drawback is 16 precipitation days, tied for the most of any month, so you should expect at least a few disrupted rounds across a week-long trip.
September drops the average high by 4F to 75F and sheds three rain days down to 13, making it statistically drier and only slightly cooler. Wind rises modestly by 1.2 mph into September. For golfers who can wait, September offers a better rain-to-playable-day ratio, though August's warmer mornings at 66F are easier to tee off in early.