Weathermondo.com
United StatesThe climate of Saint Louis
The current climate in Saint Louis features temperatures ranging from a high of 32°C to a low of 5°C throughout the year. The average yearly temperature is around 20°C. At night, temperatures in the colder months average around -4°C and in the warmer months around 21°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Saint Louis, Missouri.
Temperature records
The highest temperature recorded in Saint Louis in recent years was 40°C in August 2023. The lowest daytime temperature recorded was -17°C in January 2014.
Precipitation and snowfall
On average, Saint Louis gets 1944 mm of precipitation each year. Of this, about 36 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Saint Louis?
The best time to visit Saint Louis for mild to warm weather is April up to October. You might get some rain, but the temperatures are just right to explore Saint Louis.
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Climate Table of Saint Louis
The climate table of Saint Louis shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 5 | 7 | 13 | 20 | 25 | 31 | 32 | 31 | 29 | 21 | 14 | 9 |
| Temp. min (°C) | -4 | -3 | 3 | 9 | 15 | 20 | 22 | 20 | 18 | 10 | 3 | 0 |
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| Precipitation (mm) | 83 | 149 | 168 | 211 | 223 | 242 | 157 | 227 | 130 | 131 | 78 | 145 |
| Snow (cm) | 17 | 9,9 | 2,1 | 0,1 | 0 | 0 | 0 | 0 | 0 | 0 | 1,7 | 4,7 |
| UV Index | 2 | 5 | 5 | 6 | 5 | 7 | 8 | 6 | 6 | 5 | 3 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Saint Louis, Missouri. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Saint Louis
Yearly Temperature in Saint Louis
Precipitation charts
These charts show the average amount of precipitation in Saint Louis, Missouri. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Saint Louis
Total Yearly Precipitation in Saint Louis
Average Snowfall per Month in Saint Louis
Total Yearly Snowfall in Saint Louis
UV index chart
This chart shows the average UV index per month in Saint Louis, Missouri. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Saint Louis
Weather experiences in Saint Louis
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Average weather in Saint Louis by month
Click on a month below to see detailed weather info for Saint Louis. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.