Cheyenne, WY Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Cheyenne's primary NOAA station, CHEYENNE - 2 stations mapped to the area.
The climate verdict for Cheyenne
Dryness leads the climate profile for Cheyenne, Wyoming, with 15.4 inches of precipitation a year. NOAA records an annual average of 47°F. At 44/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 10% of scores.
- 47°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, above 10% of station-mapped location scores
- 15.4"
- annual precipitation · 63" snow
- 142 days
- frost-free days per growing season
Cheyenne: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00024018 · Cheyenne, WY 47°F mean · 15.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-LOW · LOAD-HEAT · STN-MULTI · BOOK-FULL
- TEMP-COOL 47°F
- RANK-COOL #1,852
- PHOTO-FINISH ≈ Titusville Wtr…
- PRCP-DRY 15.4"
- SWING-MID 41°F
- COMF-LOW 44/100
- LOAD-HEAT 6,959 HDD
- STN-MULTI USW00024018
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Titusville Wtr Wks, PA (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every WY station list.
- Cheyenne (this station) 47°F
- Hot Montague, MI 47°F
- Near Titusville Wtr…, PA 47°F
- Near Eureka Ranger S…, MT 47°F
- Near Paul, ID 47°F
Cheyenne sits in Wyoming, the #5 coldest U.S. state at 43.3°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Cheyenne
Cheyenne: 29/100 · grade F
Cheyenne publishes all six Living Index dimensions from NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals.
PlainClimate-derived for Cheyenne, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Summer moisture balance | 44.8°F mean dew point | 62/100 · C |
| Precipitation balance | 15.4 in · 19.6 from 35 in | 30/100 · F |
| Annual temperature balance | 46.9°F · 20.6° from 67.5°F | 27/100 · F |
| Normal heat + freeze calendar | 185 calendar days | 22/100 · F |
| Frost-free season | 142 days/year | 20/100 · F |
| Snowfall burden | 62.9 inches/year | 14/100 · F |
Cheyenne · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Cheyenne's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 70.1°F
- Coldest month
- 28.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Cheyenne sits across the climate record
Three NOAA fields for Cheyenne's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 73%
- Among 6,861 stations, Cheyenne sits in the cooler third of annual means.
- Annual precipitation
- Drier than 82%
- Cheyenne's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 42nd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Cheyenne compares across U.S. station-mapped locations
Cheyenne's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 10th percentile score exceeds 10% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Cheyenne's measured station temperature trend
MethodologyAcross 142 complete annual observations from 1875 to 2025, CHEYENNE warmed at a fitted rate of 0.15°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Cheyenne primary station fitted change +0.15 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 40°F (4°C) | 18°F (-8°C) | 29°F (-2°C) | 0.3" | 6.3" | 28.9 | 0.0 |
| February | 41°F (5°C) | 18°F (-8°C) | 30°F (-1°C) | 0.5" | 9.0" | 26.0 | 0.0 |
| March | 49°F (10°C) | 25°F (-4°C) | 37°F (3°C) | 1.0" | 9.7" | 25.3 | 0.0 |
| April | 55°F (13°C) | 31°F (-1°C) | 43°F (6°C) | 1.8" | 11.3" | 18.0 | 0.0 |
| May | 64°F (18°C) | 40°F (5°C) | 52°F (11°C) | 2.4" | 3.4" | 5.0 | 0.1 |
| June | 77°F (25°C) | 49°F (10°C) | 63°F (17°C) | 2.2" | 0.0" | 0.1 | 2.1 |
| July | 84°F (29°C) | 56°F (13°C) | 70°F (21°C) | 2.1" | 0.0" | 0.0 | 7.8 |
| August | 82°F (28°C) | 54°F (12°C) | 68°F (20°C) | 1.5" | 0.0" | 0.0 | 4.3 |
| September | 73°F (23°C) | 46°F (8°C) | 60°F (15°C) | 1.5" | 1.0" | 1.2 | 0.6 |
| October | 59°F (15°C) | 34°F (1°C) | 47°F (8°C) | 1.0" | 5.9" | 12.8 | 0.0 |
| November | 48°F (9°C) | 25°F (-4°C) | 36°F (2°C) | 0.6" | 7.5" | 24.2 | 0.0 |
| December | 39°F (4°C) | 18°F (-8°C) | 29°F (-2°C) | 0.5" | 8.8" | 28.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 85°F around July 19, short of 90°F on every date, while 185 dates carry a normal low at or below freezing, the coldest 17°F near December 19.
The freezing stretch
The normal low stays at or below 32°F into April 22, then returns to freezing around October 21, covering 185 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 18, when 42% of years recorded at least a hundredth of an inch. The driest is January 10 at 17%. Summed across the calendar, that is about 102 wet dates a year.
The widest day
June 30 carries the biggest normal gap between afternoon and dawn, 29°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Cheyenne.
Where Cheyenne Stands Nationally
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 185 nights a year, more than most ranked stations.
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Cheyenne earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 6.3"
5.1 days with precipitation
Snow: 9.0"
6.9 days with precipitation
Snow: 9.7"
7.9 days with precipitation
Snow: 11.3"
10.6 days with precipitation
Snow: 3.4"
12.9 days with precipitation
10.7 days with precipitation
10.5 days with precipitation
10.3 days with precipitation
Snow: 1.0"
7.3 days with precipitation
Snow: 5.9"
7.1 days with precipitation
Snow: 7.5"
6.2 days with precipitation
Snow: 8.8"
6.0 days with precipitation
Cheyenne runs a summer-peaked wet season
38% of Cheyenne's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is May at 2.4", on a 41.4°F seasonal spread. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: May, June, July, taking 44% of the annual total between them.
- Driest month: January at 0.3".
- Winter share: 9% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
Cheyenne is dry, and what does fall arrives gently
Only about 101 days a year record measurable precipitation here, 28% of the calendar, and they carry 15.4" between them. At roughly 0.15 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is May at about 13 wet days; the driest is January at about 5.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Winter brings real snow to Cheyenne
Cheyenne averages 62.9 inches of snowfall a year, with April the snowiest month on the normals, spread across roughly 45 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 62.9 inches of depth.
- Days recording measurable snow: about 45 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 41% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 1
50% probability date
Last Spring Freeze
May 12
50% probability date
Growing Season
142 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,959
Higher = more heating needed
Cooling Degree Days
399
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 52% | 13.7 | 61% | 19% |
| February | 50% | 13.6 | 60% | 21% |
| March | 50% | 13.4 | 52% | 24% |
| April | 52% | 12.5 | 46% | 27% |
| May | 54% | 11.0 | 50% | 21% |
| June | 45% | 10.1 | 65% | 8% |
| July | 50% | 9.4 | 61% | 11% |
| August | 46% | 9.7 | 65% | 10% |
| September | 48% | 10.7 | 67% | 15% |
| October | 50% | 12.4 | 64% | 20% |
| November | 49% | 13.7 | 68% | 17% |
| December | 51% | 13.8 | 66% | 17% |
Nationwide similar cities
Other rankable U.S. places outside WY closest to Cheyenne on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (47°F here).
- Bath, NY 47°F · 0.0°F off
- Battle Creek, IA 47°F · 0.0°F off
- Bayard, WV 47°F · 0.0°F off
- Bellevue, ID 47°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (15.4" here), excluding temperature-peer places.
- Lompoc, CA 15.4" · 0.0" off
- Tioga, ND 15.4" · 0.0" off
- Kit Carson, CO 15.4" · 0.0" off
- Healy, AK 15.4" · 0.0" off
Snow and freeze rhythm
When cold and snow define Cheyenne
heating led · dry · mid swing
Cheyenne's energy balance leans toward cold weather: 6,959 annual heating degree days against 399 for cooling. Its 41.4°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 142 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Cheyenne coldest normal
December
The monthly mean of 29°F (-2°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Cheyenne typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Cheyenne snow peak
April
Cheyenne averages 62.9 inches of snow a year, with April the snowiest month on the normals.
Questions about Cheyenne's climate
How much snow does Cheyenne get? ▼
How cold does Cheyenne get in winter? ▼
How much energy does heating and cooling require in Cheyenne? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Cheyenne's primary station: CHEYENNE (USW00024018). 2 NOAA stations are mapped to the Cheyenne area; the primary station's record is used for consistency. For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 5613900). Match rule for Cheyenne: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Cheyenne comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.