WEATHER IN St. Louis
Climate tables. Data for St. Louis.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -28.3 (1930) | -4.6 | 0.1 | 4.7 | 25.0 (1950) |
| february | -27.8 (1905) | -2.4 | 2.6 | 7.7 | 28.9 (1911) |
| march | -20.6 (1960) | 2.6 | 8.1 | 13.7 | 33.3 (1929) |
| april | -6.7 (1936) | 8.3 | 14.2 | 20.0 | 33.9 (1930) |
| may | -0.6 (1976) | 14.4 | 19.7 | 25.1 | 36.7 (1953) |
| june | 6.1 (1969) | 19.6 | 24.7 | 29.9 | 42.2 (2012) |
| july | 10.6 (1972) | 21.7 | 26.9 | 32.0 | 46.1 (1954) |
| august | 8.3 (1986) | 20.7 | 26.0 | 31.3 | 43.3 (1934) |
| september | 0.0 (1942) | 16.1 | 21.7 | 27.3 | 40.0 (1984) |
| october | -6.1 (1925) | 9.5 | 15.1 | 20.7 | 34.4 (1953) |
| november | -17.2 (1964) | 3.0 | 8.1 | 13.1 | 30.0 (1937) |
| december | -26.7 (1989) | -1.9 | 2.5 | 6.9 | 24.4 (1970) |
| year | -28.3 (1930) | 8.8 | 13.9 | 18.9 | 46.1 (1954) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 66 | 3 (1986) | 229 (2005) | 106 (1950) |
| february | 57 | 6 (1963) | 227 (1882) | 101 (1882) |
| march | 89 | 4 (1910) | 242 (1938) | 91 (1913) |
| april | 120 | 12 (1895) | 275 (1893) | 122 (1979) |
| may | 122 | 14 (1934) | 328 (1995) | 142 (1995) |
| june | 114 | 3 (1914) | 314 (2003) | 119 (1902) |
| july | 100 | 6 (1930) | 272 (1981) | 119 (1948) |
| august | 86 | 2 (1873) | 519 (1946) | 174 (1915) |
| september | 75 | 0.0 (1979) | 268 (1866) | 117 (1945) |
| october | 80 | 5 (1908) | 315 (2009) | 74 (1946) |
| november | 87 | 0.0 (1865) | 253 (1985) | 90 (1921) |
| december | 64 | 0.8 (1955) | 277 (1846) | 77 (1922) |
| year | 1040 | 523 (1953) | 1748 (1858) | 174 (1915) |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |