Best year time to visit Saint Louis

General weather information about Saint Louis

Average annual temperature is 12.0 °C

Absolute maximum temperature: 41.2 °C

Absolute minimum temperature: -7.6 °C

Number of sunny days: 174 days

Number of rainy days: 191 days

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* Weather data for Saint Louis United States is based on climate observations for 2026 year

Saint Louis air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)14.911.816.728.831.033.436.941.232.329.517.616.5
Average daytime temperature (°C)9.08.410.814.123.326.831.032.024.218.411.510.2
Average temperature (°C)4.93.45.18.715.617.821.723.017.112.37.06.6
Average night temperature (°C)1.80.21.54.89.711.014.316.311.88.33.94.1
Absolute minimum temperature (°C)-5.3-7.6-3.2-0.35.96.411.511.57.1-0.3-4.4-2.4

Saint Louis monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.210.411.913.514.915.615.214.012.511.09.68.8
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)3.85.36.26.911.213.113.812.09.36.95.13.2
Precipitation (mm)11083164176232121660120128266
Sunny days71146192529231713146
Rainy days241727241252813181625
Snow days000000000000

Saint Louis - weather forecast by months

Saint Louis weather in januarySaint Louis weather in februarySaint Louis weather in marchSaint Louis weather in aprilSaint Louis weather in maySaint Louis weather in juneSaint Louis weather in julySaint Louis weather in augustSaint Louis weather in septemberSaint Louis weather in octoberSaint Louis weather in novemberSaint Louis weather in december

Best time to visit Saint Louis:

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

  • May — 11.2(h)
  • June — 13.1(h)
  • July — 13.8(h)
  • August — 12.0(h)

Months with the longest average daylight duration in Saint Louis:

  • June — 15.6(h)

The largest precipitation sum in Saint Louis is at

  • March — 164(mm)
  • April — 176(mm)
  • November — 128(mm)
  • December — 266(mm)

    • Weather forecast in the closest to Saint Louis admin centers

    Weather forecast in the closest towns to Saint Louis

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    Frequently asked questions

    When is the best time to visit Saint Louis?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Saint Louis.
    What is the weather like in Saint Louis?
    See average temperature, rainfall and daylight hours for Saint Louis by month in the table above.
    How many sunny days does Saint Louis have?
    The monthly weather statistics above show sunshine and rainfall patterns for Saint Louis throughout the year.