St Louis weather by month

Check out St Louis weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in St Louis (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
3°C maximum daytime temperature in January in St Louis3
6°C maximum daytime temperature in February in St Louis6
13°C maximum daytime temperature in March in St Louis13
20°C maximum daytime temperature in April in St Louis20
25°C maximum daytime temperature in May in St Louis25
30°C maximum daytime temperature in June in St Louis30
32°C maximum daytime temperature in July in St Louis32
31°C maximum daytime temperature in August in St Louis31
27°C maximum daytime temperature in September in St Louis27
20°C maximum daytime temperature in October in St Louis20
13°C maximum daytime temperature in November in St Louis13
6°C maximum daytime temperature in December in St Louis6
Min temperature (night-time)
-6°C minimum night-time temperature in January in St Louis-6
-4°C minimum night-time temperature in February in St Louis-4
2°C minimum night-time temperature in March in St Louis2
8°C minimum night-time temperature in April in St Louis8
13°C minimum night-time temperature in May in St Louis13
18°C minimum night-time temperature in June in St Louis18
20°C minimum night-time temperature in July in St Louis20
19°C minimum night-time temperature in August in St Louis19
15°C minimum night-time temperature in September in St Louis15
8°C minimum night-time temperature in October in St Louis8
3°C minimum night-time temperature in November in St Louis3
-3°C minimum night-time temperature in December in St Louis-3
Heat & Humidity
No heat & humidity in January in St Louis0
No heat & humidity in February in St Louis0
No heat & humidity in March in St Louis0
No heat & humidity in April in St Louis0
No heat & humidity in May in St Louis0
Moderate heat & humidity in June in St LouisM
High heat & humidity in July in St LouisH
High heat & humidity in August in St LouisH
Low heat & humidity in September in St LouisL
No heat & humidity in October in St Louis0
No heat & humidity in November in St Louis0
No heat & humidity in December in St Louis0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in St Louis

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in St Louis10
11 hours of daylight per day in February in St Louis11
12 hours of daylight per day in March in St Louis12
13 hours of daylight per day in April in St Louis13
14 hours of daylight per day in May in St Louis14
15 hours of daylight per day in June in St Louis15
15 hours of daylight per day in July in St Louis15
14 hours of daylight per day in August in St Louis14
12 hours of daylight per day in September in St Louis12
11 hours of daylight per day in October in St Louis11
10 hours of daylight per day in November in St Louis10
10 hours of daylight per day in December in St Louis10
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in St Louis2
UV (maximum) index 3 (Moderate) in February in St Louis3
UV (maximum) index 5 (Moderate) in March in St Louis5
UV (maximum) index 7 (High) in April in St Louis7
UV (maximum) index 8 (Very High) in May in St Louis8
UV (maximum) index 9 (Very High) in June in St Louis9
UV (maximum) index 9 (Very High) in July in St Louis9
UV (maximum) index 9 (Very High) in August in St Louis9
UV (maximum) index 7 (High) in September in St Louis7
UV (maximum) index 4 (Moderate) in October in St Louis4
UV (maximum) index 3 (Moderate) in November in St Louis3
UV (maximum) index 2 (Low) in December in St Louis2

Rainfall in St Louis

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
9 days with some rainfall in January in St Louis9
8 days with some rainfall in February in St Louis8
11 days with some rainfall in March in St Louis11
11 days with some rainfall in April in St Louis11
10 days with some rainfall in May in St Louis10
9 days with some rainfall in June in St Louis9
8 days with some rainfall in July in St Louis8
8 days with some rainfall in August in St Louis8
8 days with some rainfall in September in St Louis8
8 days with some rainfall in October in St Louis8
10 days with some rainfall in November in St Louis10
10 days with some rainfall in December in St Louis10
Average monthly rainfall (mm)
46 mm monthly rainfall in January in St Louis46
55 mm monthly rainfall in February in St Louis55
84 mm monthly rainfall in March in St Louis84
95 mm monthly rainfall in April in St Louis95
103 mm monthly rainfall in May in St Louis103
95 mm monthly rainfall in June in St Louis95
95 mm monthly rainfall in July in St Louis95
75 mm monthly rainfall in August in St Louis75
78 mm monthly rainfall in September in St Louis78
67 mm monthly rainfall in October in St Louis67
80 mm monthly rainfall in November in St Louis80
68 mm monthly rainfall in December in St Louis68

More about St Louis

St Louis by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Missouri (St Louis) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in St Louis?

St Louis has a cold climate with hot summers and some rainfall in all months.

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: St Louis, Missouri hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
0
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about the USA

Compare St Louis with the USA

Below the St Louis chart shows average maximum daytime temperature for St Louis, Missouri, USA and the USA (Washington).

Maximum daytime temperature (°C)

St Louis, Missouri, USA
USA (Washington)
3
5
6
7
13
13
20
19
25
24
30
29
32
31
31
30
27
26
20
20
13
14
6
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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