Best year time to visit St. Louis

General weather information about St. Louis

Average annual temperature is 7.1 °C

Absolute maximum temperature: 30.5 °C

Absolute minimum temperature: -28.6 °C

Number of sunny days: 137 days

Number of rainy days: 169 days

Number of snow days: 59 days

Look at detailed online map of St. Louis

* Weather data for St. Louis Canada is based on climate observations for 2026 year

St. Louis air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)9.07.55.615.128.730.528.324.727.423.013.014.7
Average daytime temperature (°C)0.5-3.9-0.16.713.818.225.721.320.515.35.23.3
Average temperature (°C)-3.0-8.2-2.63.09.014.621.818.016.711.72.20.4
Average night temperature (°C)-6.0-12.3-5.4-0.25.311.518.415.113.78.8-0.4-2.4
Absolute minimum temperature (°C)-15.5-28.6-12.4-7.41.15.914.311.36.81.1-6.9-7.6

St. Louis monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.010.311.913.615.015.815.414.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.16.37.39.510.18.010.99.07.96.34.73.8
Precipitation (mm)1805488327016311617475947369
Sunny days71310181395717111215
Rainy days93410182126241320138
Snow days151217200000058

Best time to visit St. Louis:

The best time to visit St. Louis during the most sunny months:

  • April — 9.5(h)
  • May — 10.1(h)
  • July — 10.9(h)

Months with the longest average daylight duration in St. Louis:

  • June — 15.8(h)
  • July — 15.4(h)

The largest precipitation sum in St. Louis is at

  • January — 180(mm)
  • June — 163(mm)
  • August — 174(mm)