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When does it first snow in St. Louis, MO?

At St. Louis, the typical date of the first measurable snowfall (0.1 inch or more in a day) is Dec 2. That is the median over the last 30 snow seasons: half of seasons saw it earlier, half later. In about 1 season in 10 it came by Nov 12, and in 1 in 10 not until Dec 23 or later. The earliest was Nov 3 (1997-98) and the latest Jan 9 (2015-16). A first snowfall of at least 1 inch in a single day typically arrives around Dec 14, and 100% of seasons had one. The first freeze of fall (a low of 32°F or colder) typically comes around Nov 1, and the last freeze of spring around Apr 1.

This season so far (2026-27, data through Oct 16, 2026): no measurable snow recorded yet; no 32°F freeze recorded yet at this station. Compare with the typical dates above. This is observed data and can lag by a day or two, and it is not a forecast.

Dec 2Median first measurable snow (0.1"+)

Dec 14Median first 1"+ snowfall

16.4"Average snowfall per season

23%Chance of white Christmas (1"+ on ground Dec 25)

Nov 1Median first fall freeze (≤32°F)

Apr 1Median last spring freeze (≤32°F)

212Median freeze-free days between

First snowfall dates at St. Louis

First day with…	Median date	Typical range (10th–90th pct)	Earliest in 30 seasons	Latest in 30 seasons	Seasons with one
0.1" of snow or more (measurable)	Dec 2	Nov 12 – Dec 23	Nov 3 (1997-98)	Jan 9 (2015-16)	100%
1" of snow or more	Dec 14	Nov 16 – Jan 20	Nov 11 (2019-20)	Mar 13 (2016-17)	100%
3" of snow or more	Jan 12	Dec 12 – Feb 20	Nov 30 (2024-25)	Feb 28 (2014-15)	73%

Based on 30 seasons (July–June, 1995-96 to 2024-25) with at least 85% complete daily snowfall records at the station. Dates are for a single day’s snowfall, so "1 inch" means one calendar day with 1" or more, not total accumulation.

Chance the first snow has already happened by a given date

Snowfall	By Nov 1	By Dec 1	By Jan 1
0.1"+ (measurable)	0%	47%	93%
1"+	0%	27%	77%

In spring, the last measurable snowfall of the season typically falls around Mar 12 (median).

White Christmas odds in St. Louis

NOAA defines a white Christmas as at least 1 inch of snow on the ground on the morning of December 25. Using the last 30 years of daily snow-depth records (1995–2024) at this station, St. Louis had that in 23% of years, at least 3 inches in 13%, and at least 6 inches in 3%. The average depth on Dec 25 was 0.7 inches and the deepest was 6 inches. New snow was falling (0.1" or more) on Christmas Day itself in 17% of years. Based on 30 years with a recorded depth on Dec 25.

Chance of at least 1 inch of snow on the ground, by date

Share of the last 30 years with 1"+ snow depth within 3 days of each date. Snow cover is most likely around Jan 10 (28%). Red line: Dec 25.

First and last freeze dates in St. Louis

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Nov 1	Oct 22 – Nov 17	Oct 7 (2000) / Nov 27 (2009)	100%
32°F or colder (freeze)	Last in spring	Apr 1	Mar 20 – Apr 17	–	100%
28°F or colder (hard freeze)	First in fall	Nov 15	Nov 2 – Nov 30	Nov 1 (2023) / Dec 9 (2001)	100%
28°F or colder (hard freeze)	Last in spring	Mar 19	Mar 5 – Mar 31	–	100%

Based on the station’s daily minimum temperature, 1995–2024. “Freeze” here means a daily low at or below the threshold, which is not the same as visible frost. Your yard can differ by several degrees and days from an airport weather station, so use these as planning odds, not guarantees.

The median stretch between the last spring freeze and the first fall freeze (the freeze-free season) was about 212 days.

Nearby weather stations

Source station: St Louis Lambert Intl Ap (USW00013994), elevation 531 ft. Data: NOAA NCEI GHCN-Daily. Computed by First Snow Dates; how we calculate this. Historical averages only; for a forecast see weather.gov.

Planning for winter? Heat pump vs gas furnace, propane and oil: heating cost in Missouri (on our sister site PlugVsPump, from EIA prices).