May in St. Louis, MO: variable for golf — mixed conditions — check the live score. Best tee times: mid-morning through early afternoon.
| Average May Weather | |
|---|---|
| Avg daily high | 76°F |
| Avg daily low | 58°F |
| Rainy days | 18 / mo |
| Avg peak wind | 11.6 mph |
May's numbers tell a specific story on the scorecard. A 76°F average high lands squarely in the ideal 60–80°F scoring window, so temperature alone should not cost you strokes — but the 18-day precipitation average will. That is the highest of any month in St. Louis, meaning roughly three out of every five rounds carries a real threat of a rain delay, soft fairways, or cart-path-only restrictions. Expect slower greens after overnight soaks and plugged lies in the rough.
The 18°F daily swing between the 58°F low and 76°F high also matters for shot selection. An early morning tee time plays considerably cooler and firmer than a midday round, affecting how much roll you get off the tee and how aggressively you can attack pins. Peak wind at 11.6 mph sits below the 15 mph moderate threshold, so it is manageable — but factor in that St. Louis wind is rarely constant, and a back-nine gust can quickly inflate a front-nine score built in calm air.
Book the earliest available slot — a 6–7 AM tee time in May captures the firmest conditions before afternoon storm cells develop, which are the primary driver of those 18 rain days. Midday and late-afternoon windows carry the highest exposure to pop-up showers, so if the course allows, target morning blocks and keep a weather app open the night before. See how conditions rate hour by hour on our playability scale.
May is 10°F warmer than April and drops from 13.4 mph peak wind to 11.6 mph, so conditions feel noticeably more comfortable than the previous month — but April's 14 rain days balloon to 18 in May, making this the wetter of the two by a clear margin. Looking ahead, June sheds five of those rain days and adds another 10°F to the high, settling winds to 10.2 mph, which makes it the cleaner scoring month. May sits between a cooler, windier April and a hotter, drier June, carrying the worst precipitation of the three.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for St. Louis, MO for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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May offers comfortable temperatures — a 76°F average high fits neatly in the ideal scoring range — but it is the rainiest month of the year in St. Louis, averaging 18 days with precipitation. That combination earns a Variable season-tier rating, meaning good rounds are absolutely possible but weather interruptions are more likely in May than in any other month. Morning tee times and a flexible schedule improve the odds considerably.
With 18 precipitation days on average, May has roughly a 60% daily chance of some form of precipitation — the highest of any month in the city. Rain events range from brief afternoon showers to all-day soaks, and repeated wet weeks can leave fairways soft and greens slower than usual. Building a backup day into any golf trip is a practical precaution rather than an overreaction.