August in St. Louis, MO: variable for golf — mixed conditions — check the live score. Best tee times: morning before noon for the most comfortable round.
| Average August Weather | |
|---|---|
| Avg daily high | 85°F |
| Avg daily low | 69°F |
| Rainy days | 16 / mo |
| Avg peak wind | 8.8 mph |
In St. Louis in August, the one variable that defines every round is humidity. The high sits at 85°F and rarely dips below 69°F overnight, which means the air stays thick from first tee to last green. Wind offers no real relief — at 8.8 mph, August is actually the calmest month of the year here, so there's nothing to cut through the muggy air. Early morning tee times are less uncomfortable, but even at 6 AM the low 70s feel warmer than they read on paper.
The rain risk is the other weight on the scale. With 16 precipitation days, August ranks as the third-wettest month of the year in St. Louis. Most of it comes as afternoon thunderstorms, which can roll in fast off the Missouri plains. If you're planning to walk, carry extra water and watch the western sky after lunch. The courses stay green and well-conditioned, but afternoon suspension delays are common enough that building buffer into your schedule is worth it.
Book the earliest available tee time — 6 or 7 AM — to beat both the peak heat and the afternoon storm window that opens up once temperatures climb. With 16 rain days spread across the month, mid-afternoon slots carry a meaningful chance of a lightning delay, so early starters finish before the worst of it. See how conditions rate hour by hour on our playability scale.
August steps back from July's peak heat — the average high drops 3°F to 85°F and precipitation days fall by one, from 17 to 16 — so the two months play nearly identically in feel. The real shift comes in September, when the high drops another 3°F to 82°F and, more meaningfully, rain days fall from 16 down to 11, making September noticeably more playable for golfers who can wait.
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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The average high is 85°F, but with overnight lows sitting at 69°F the humidity never fully breaks, so the heat index on course typically runs several degrees above the thermometer reading. Most golfers find mid-afternoon rounds genuinely taxing, which is why the earliest tee times book out first in August.
Yes — August logs 16 precipitation days, making it the third-wettest month of the year, and the bulk of that moisture arrives as late-afternoon convective storms. Rounds that tee off after noon carry a real risk of a suspension horn before the back nine. Planning an early start is the most reliable way to complete 18 holes without interruption.