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 (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
37°F maximum daytime temperature in January in St Louis37
43°F maximum daytime temperature in February in St Louis43
55°F maximum daytime temperature in March in St Louis55
68°F maximum daytime temperature in April in St Louis68
77°F maximum daytime temperature in May in St Louis77
86°F maximum daytime temperature in June in St Louis86
90°F maximum daytime temperature in July in St Louis90
88°F maximum daytime temperature in August in St Louis88
81°F maximum daytime temperature in September in St Louis81
68°F maximum daytime temperature in October in St Louis68
55°F maximum daytime temperature in November in St Louis55
43°F maximum daytime temperature in December in St Louis43
Min temperature (night-time)
21°F minimum night-time temperature in January in St Louis21
25°F minimum night-time temperature in February in St Louis25
36°F minimum night-time temperature in March in St Louis36
46°F minimum night-time temperature in April in St Louis46
55°F minimum night-time temperature in May in St Louis55
64°F minimum night-time temperature in June in St Louis64
68°F minimum night-time temperature in July in St Louis68
66°F minimum night-time temperature in August in St Louis66
59°F minimum night-time temperature in September in St Louis59
46°F minimum night-time temperature in October in St Louis46
37°F minimum night-time temperature in November in St Louis37
27°F minimum night-time temperature in December in St Louis27
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 (inches)
1.8 inches monthly rainfall in January in St Louis1.8
2.2 inches monthly rainfall in February in St Louis2.2
3.3 inches monthly rainfall in March in St Louis3.3
3.7 inches monthly rainfall in April in St Louis3.7
4.1 inches monthly rainfall in May in St Louis4.1
3.7 inches monthly rainfall in June in St Louis3.7
3.7 inches monthly rainfall in July in St Louis3.7
3.0 inches monthly rainfall in August in St Louis3.0
3.1 inches monthly rainfall in September in St Louis3.1
2.6 inches monthly rainfall in October in St Louis2.6
3.1 inches monthly rainfall in November in St Louis3.1
2.7 inches monthly rainfall in December in St Louis2.7

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)  |  Imperial (°F)

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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 (°F)

St Louis, Missouri, USA
USA (Washington)
37
41
43
45
55
55
68
66
77
75
86
84
90
88
88
86
81
79
68
68
55
57
43
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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