Clayton, Missouri Climate
United States
Pop. 15,884 Elev. 175 m / 574 ft
TZ: America/Chicago (UTC-5) ·
Summers in Clayton are warm, with July highs around 89°F (32°C), while winters are frigid with January lows of 20°F (-7°C). Humidity pushes the summer feels-like temperature to around 106°F (41°C). Expect around 68 rainy days annually (40.3 in / 1024 mm total), with snow on 5 days and 29 in (736 mm) of annual accumulation. The city averages 126 sunny days per year and around 50 thunderstorm days. Nearby lake water reaches 83°F (28°C) in summer.
| Temperature | 89°F (32°C) high | 20°F (-7°C) low |
| Feels like | 106°F (41°C) high | 14°F (-10°C) low |
| Rain | 68 days | 40.3 in (1024 mm) /yr |
| Snow | 5 days | 29.0 in (736 mm) /yr |
| Sky | 126 sunny | 50 stormy |
| Wind | 2.1 mph (0.9 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Mar, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
49
Jan 60
Feb 51
Mar 67
Apr 63
May 56
Jun 60
Jul 47
Aug 42
Sep 44
Oct 52
Nov 59
Dec Humidity (%)
66
Jan 65
Feb 51
Mar 62
Apr 65
May 73
Jun 77
Jul 69
Aug 63
Sep 67
Oct 68
Nov 72
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 8 mi St. Louis Lambert International Airport (STL)
Ski resort 19 mi Hidden Valley
National park 91 mi Emmett Till and Mamie Till-Mobley National Monument
Hospital 1 mi SSM Health St. Mary's Hospital - St. Louis
Hiking trail 2 mi
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 36°F 2°C | 20°F -7°C | 0.7 in 18 mm | 13.4 in341 mm | 13 |
| February | 43°F 6°C | 27°F -3°C | 0.8 in 21 mm | 7.9 in201 mm | 9 |
| March | 65°F 19°C | 42°F 6°C | 3.2 in 81 mm | 0.4 in10 mm | 13 |
| April | 70°F 21°C | 50°F 10°C | 6.3 in 161 mm | — | 5 |
| May | 75°F 24°C | 57°F 14°C | 5.2 in 131 mm | — | 9 |
| June | 85°F 29°C | 70°F 21°C | 7.7 in 196 mm | — | 9 |
| July | 89°F 32°C | 74°F 23°C | 6.2 in 156 mm | — | 8 |
| August | 85°F 29°C | 66°F 19°C | 1.0 in 25 mm | — | 16 |
| September | 84°F 29°C | 59°F 15°C | 3.3 in 83 mm | — | 12 |
| October | 72°F 22°C | 53°F 11°C | 2.9 in 73 mm | — | 16 |
| November | 57°F 14°C | 40°F 4°C | 2.5 in 63 mm | 5.1 in130 mm | 10 |
| December | 45°F 7°C | 29°F -2°C | 0.7 in 17 mm | 2.1 in54 mm | 6 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 13 | 0 |
| February | 9 | 1 |
| March | 13 | 5 |
| April | 5 | 9 |
| May | 9 | 5 |
| June | 9 | 9 |
| July | 8 | 12 |
| August | 16 | 2 |
| September | 12 | 2 |
| October | 16 | 2 |
| November | 10 | 3 |
| December | 6 | 0 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 33°F 0°C |
| February | 32°F 0°C |
| March | 49°F 9°C |
| April | 58°F 15°C |
| May | 65°F 18°C |
| June | 77°F 25°C |
| July | 83°F 28°C |
| August | 77°F 25°C |
| September | 72°F 22°C |
| October | 62°F 17°C |
| November | 46°F 8°C |
| December | 34°F 1°C |