Best year time to visit Old Saint Louis

General weather information about Old Saint Louis

Average annual temperature is 13.3 °C

Absolute maximum temperature: 34.5 °C

Absolute minimum temperature: -9.9 °C

Number of sunny days: 185 days

Number of rainy days: 172 days

Number of snow days: 8 days

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	17.5	21.1	22.9	27.2	29.6	32.5	34.2	34.5	32.3	30.0	25.2	16.0
Average daytime temperature (°C)	7.1	11.5	12.0	18.6	23.4	27.6	29.7	28.3	26.6	20.1	13.1	9.2
Average temperature (°C)	3.4	5.0	5.9	11.8	17.3	21.6	24.1	23.0	20.7	14.5	7.2	4.7
Average night temperature (°C)	0.4	0.4	1.3	6.2	11.5	16.2	19.2	18.2	15.5	10.1	2.9	1.4
Absolute minimum temperature (°C)	-7.7	-9.9	-7.6	-2.2	3.6	10.8	15.1	12.4	10.8	-3.3	-7.9	-6.9

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

The largest precipitation sum in Old Saint Louis is at

January — 122(mm)

March — 171(mm)

April — 109(mm)

July — 123(mm)

When is the best time to visit Old Saint Louis?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Old Saint Louis.

What is the weather like in Old Saint Louis?

See average temperature, rainfall and daylight hours for Old Saint Louis by month in the table above.

How many sunny days does Old Saint Louis have?

The monthly weather statistics above show sunshine and rainfall patterns for Old Saint Louis throughout the year.