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When does it first snow in Cheyenne, WY?

At Cheyenne, the typical date of the first measurable snowfall (0.1 inch or more in a day) is Oct 9. 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 Sep 19, and in 1 in 10 not until Oct 31 or later. The earliest was Sep 8 (2020-21) and the latest Nov 17 (2016-17). A first snowfall of at least 1 inch in a single day typically arrives around Oct 13, and 100% of seasons had one. The first freeze of fall (a low of 32°F or colder) typically comes around Oct 4, and the last freeze of spring around May 13.

This season so far (2026-27, data through Oct 15, 2026): no measurable snow recorded yet; first freeze (32°F or colder) Oct 15 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.

Oct 9Median first measurable snow (0.1"+)

Oct 13Median first 1"+ snowfall

62.2"Average snowfall per season

33%Chance of white Christmas (1"+ on ground Dec 25)

Oct 4Median first fall freeze (≤32°F)

May 13Median last spring freeze (≤32°F)

140Median freeze-free days between

First snowfall dates at Cheyenne

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)	Oct 9	Sep 19 – Oct 31	Sep 8 (2020-21)	Nov 17 (2016-17)	100%
1" of snow or more	Oct 13	Sep 22 – Nov 11	Sep 8 (2020-21)	Nov 20 (2007-08)	100%
3" of snow or more	Oct 29	Oct 6 – Jan 4	Sep 23 (2000-01)	Feb 28 (2001-02)	100%

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)	90%	100%	100%
1"+	70%	100%	100%

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

White Christmas odds in Cheyenne

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, Cheyenne had that in 33% of years, at least 3 inches in 17%, and at least 6 inches in 3%. The average depth on Dec 25 was 0.9 inches and the deepest was 6 inches. New snow was falling (0.1" or more) on Christmas Day itself in 33% 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 3 (44%). Red line: Dec 25.

First and last freeze dates in Cheyenne

Threshold	Event	Median date	Typical range (10th–90th pct)	Earliest / latest	Years with one
32°F or colder (freeze)	First in fall	Oct 4	Sep 18 – Oct 17	Sep 7 (2020) / Oct 25 (2024)	100%
32°F or colder (freeze)	Last in spring	May 13	May 10 – May 23	–	100%
28°F or colder (hard freeze)	First in fall	Oct 12	Sep 24 – Oct 28	Sep 8 (2020) / Nov 3 (2014)	100%
28°F or colder (hard freeze)	Last in spring	May 5	Apr 21 – May 14	–	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 140 days.

Nearby weather stations

Source station: Cheyenne (USW00024018), elevation 6,193 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 Wyoming (on our sister site PlugVsPump, from EIA prices).