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Climate Statistics · City

Normal annual rainfall in St. Louis

1991–2020 · 1 data point Updated Oct 21, 2026
Climate · St. Louis

Source: NOAA National Centers for Environmental Information — GHCN-Daily, 1991–2020

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Latest value · 1991–2020 41.7 in
Weather through the year long-term average 1991–2020 · St Louis Lambert Intl Ap weather station, 21 km away
40° 24°
Jan
46° 28°
Feb
56° 37°
Mar
68° 47°
Apr
77° 58°
May
86° 67°
Jun
90° 71°
Jul
88° 70°
Aug
81° 61°
Sep
69° 49°
Oct
55° 38°
Nov
44° 29°
Dec
2.6
2.2
3.5
4.7
4.8
4.5
3.9
3.4
3.0
3.2
3.4
2.5
High and low, °F Precipitation, inches

Source: NOAA National Centers for Environmental Information — GHCN-Daily, 1991–2020

What it means

How much rain and snow (as water) falls in a typical year.

How it is calculated

Sum of the twelve monthly precipitation normals at the nearest weather station: 1991–2020, or the latest ten years; months with a few missing days are scaled up.