Playability Score: 96/100 — Elite
Current conditions: 76°F, wind 4 mph, 10% chance of rain.
Updated July 9, 2026
St. Louis has a humid continental climate with four seasons. Spring and fall offer the best golf weather. Summer humidity and storms are common. Winter shortens the season. Mississippi Valley location can trap humidity and bring variable winds.
St. Louis gets hit with rain more evenly spread across the calendar than most Midwest cities, but the clustering matters if you want firm fairways. May is the worst offender at 18 precip days — that's more than half the month — followed by July (17) and August (16). When rain stacks up in consecutive weeks, the clay-heavy soils in the St. Louis area drain slowly, so courses often remain soft for days after the last rain event.
The genuinely dry windows are November and December at 10 precip days each, and September and October also hit 11. That autumn stretch from September through November gives golfers the best odds of finding ground that's actually firm under foot. Spring looks promising on the calendar but March jumps to 15 precip days and April to 14, so fairways tend to stay soft right through the season opener crowds. Because clay soils lag behind the rain calendar, the actual soft-ground window stretches beyond the last recorded precip event — rain day counts here understate how long courses stay waterlogged.
March brings 15 precip days and an average high of only 57°F — temperatures are marginal and the ground rarely dries out between storms. April warms to 66°F but stays busy with 14 rain days and the year's strongest average peak winds at 13.4 mph. By May, temps are comfortable at 76°F, but 18 precip days make it the wettest month of the year; expect soft fairways and the occasional cart ban.
June is a relative respite at just 13 precip days, and winds drop to 10.2 mph — one of the calmer months on the calendar. July and August both carry 16–17 precip days, but average highs of 88°F and 85°F with lows in the upper 60s mean heat and humidity are the bigger problem for most golfers. The scoring system's ideal range tops out at 80°F; St. Louis blows past that most afternoons from late June through August.
September drops to just 11 precip days while temperatures stay pleasant at an 82°F average high — the best combination of warm weather and drier ground in the entire year. October matches September's 11 rain days with a cooler 69°F high and winds picking back up to 11.4 mph. These two months give fairways the best chance to firm up after the soggy summer, and morning tee times before afternoon winds arrive are worth targeting.
November and December are statistically the driest months at 10 precip days each, but average highs of 55°F and 47°F with lows dipping to 38°F and 31°F push many golfers inside. January is coldest, with a 25°F average low and 11 precip days, including frequent ice and frozen ground. The dryness is real, but the firmness comes from frozen turf rather than well-drained soil — not the kind of firm you're looking for.
September and October each log just 11 precip days — tied for the fewest alongside November and December — but with average highs of 82°F and 69°F that keep temperatures inside or near the ideal 60–80°F window. After a summer that piles up 46 total precip days across June, July, and August, the ground finally gets a chance to drain and firm up. Winds stay moderate at 9.3 and 11.4 mph respectively, well below April's 13.4 mph peak.
September and October offer the best combination of reduced rain (11 precip days each) and warm temperatures that help the ground dry between storms. May through August logs 64 precip days combined, the heaviest four-month stretch of the year, so the fall dry-down is real and noticeable underfoot. October's winds average 11.4 mph, so morning tee times tend to find the firmest and calmest conditions before afternoon gusts pick up.
May averages 18 precip days — more than any other month — so the odds of hitting multiple consecutive dry days in a row are low. Temperatures are comfortable at 76°F, but the frequent rain keeps clay soils saturated and soft, often triggering cart path restrictions at courses. If May is your only option, book a tee time toward the end of the month and check a 10-day forecast before committing.
April is the windiest month with an average peak wind of 13.4 mph — the highest of any month in the year — and gusts on active storm days will exceed that figure by a meaningful margin. Spring overall (March–May) averages peak winds between 11.6 and 13.4 mph. The calmest stretch runs July through September, with August averaging just 8.8 mph — the lowest of any month — making summer mornings before the heat builds the most wind-friendly window.