Douglas, WY Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Douglas's primary NOAA station, DOUGLAS 1 SE.
The climate verdict for Douglas
Dryness leads the climate profile for Douglas, Wyoming, with 14.5 inches of precipitation a year. NOAA records an annual average of 46°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.
- 46°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, above 10% of station-mapped location scores
- 14.5"
- annual precipitation · 59" snow
- 127 days
- frost-free growing season
Douglas: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00482685 · Douglas, WY 46°F mean · 14.5" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 46°F
- RANK-COOL #1,647
- PHOTO-FINISH ≈ Lewiston
- PRCP-DRY 14.5"
- SWING-WIDE 46°F
- COMF-LOW 44/100
- LOAD-HEAT 7,255 HDD
- STN-1 USC00482685
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Lewiston, ME (+ 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.
- Douglas (this station) 46°F
- Hot Sandusky, MI 46°F
- Near Lewiston, ME 46°F
- Near Pathfinder Dam, WY 46°F
- Near West Bend, WI 46°F
Douglas 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 · Douglas
Douglas: 19/100 · grade F
Douglas publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Douglas, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 14.5 in · 20.5 from 35 in | 26/100 · F |
| Annual temperature balance | 46.3°F · 21.2° from 67.5°F | 24/100 · F |
| Snowfall burden | 59.0 inches/year | 16/100 · F |
| Normal heat + freeze calendar | 200 calendar days | 14/100 · F |
| Frost-free season | 127 days/year | 10/100 · F |
Douglas · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Douglas is a continental Köppen climate: Dfb
Coldest-month mean 25.7°F and warmest-month mean 71.6°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 71.6°F
- Coldest month
- 25.7°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 Douglas sits across the climate record
Three NOAA fields for Douglas's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 76%
- Among 6,861 stations, Douglas sits in the cooler third of annual means.
- Annual precipitation
- Drier than 84%
- Douglas's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 63rd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Douglas compares across U.S. station-mapped locations
Douglas'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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 39°F (4°C) | 12°F (-11°C) | 26°F (-4°C) | 0.6" | 7.6" | 29.7 | 0.0 |
| February | 40°F (4°C) | 13°F (-11°C) | 26°F (-3°C) | 0.7" | 10.8" | 26.3 | 0.0 |
| March | 50°F (10°C) | 23°F (-5°C) | 37°F (3°C) | 1.1" | 10.8" | 26.6 | 0.0 |
| April | 58°F (14°C) | 30°F (-1°C) | 44°F (7°C) | 1.9" | 7.7" | 18.4 | 0.0 |
| May | 68°F (20°C) | 39°F (4°C) | 53°F (12°C) | 2.7" | 1.6" | 6.3 | 0.2 |
| June | 80°F (26°C) | 49°F (9°C) | 64°F (18°C) | 1.7" | 0.0" | 0.4 | 4.2 |
| July | 88°F (31°C) | 55°F (13°C) | 72°F (22°C) | 1.3" | 0.0" | 0.0 | 16.8 |
| August | 86°F (30°C) | 53°F (11°C) | 70°F (21°C) | 1.0" | 0.0" | 0.0 | 11.3 |
| September | 76°F (24°C) | 43°F (6°C) | 59°F (15°C) | 1.2" | 1.5" | 3.4 | 2.4 |
| October | 61°F (16°C) | 30°F (-1°C) | 45°F (7°C) | 1.4" | 4.0" | 16.4 | 0.0 |
| November | 49°F (9°C) | 21°F (-6°C) | 35°F (2°C) | 0.6" | 5.8" | 25.7 | 0.0 |
| December | 39°F (4°C) | 13°F (-11°C) | 26°F (-4°C) | 0.5" | 9.2" | 28.6 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 89°F around July 24, short of 90°F on every date, while 200 dates carry a normal low at or below freezing, the coldest 12°F near February 4.
The freezing stretch
The normal low stays at or below 32°F into April 27, then returns to freezing around October 11, covering 200 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 25, when 37% of years recorded at least a hundredth of an inch. The driest is November 15 at 16%. Summed across the calendar, that is about 85 wet dates a year.
The widest day
August 25 carries the biggest normal gap between afternoon and dawn, 34°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Douglas.
Where Douglas Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 200 nights a year, placing this among the most frost-prone tenth of ranked stations.
A drier-than-most normal water year — around 15 inches, below what four out of five ranked stations collect.
Douglas 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: 7.6"
5.9 days with precipitation
Snow: 10.8"
5.7 days with precipitation
Snow: 10.8"
6.5 days with precipitation
Snow: 7.7"
9.7 days with precipitation
Snow: 1.6"
10.6 days with precipitation
8.4 days with precipitation
6.6 days with precipitation
6.3 days with precipitation
Snow: 1.5"
7.3 days with precipitation
Snow: 4.0"
6.3 days with precipitation
Snow: 5.8"
4.3 days with precipitation
Snow: 9.2"
6.0 days with precipitation
Douglas spreads its precipitation across the year
Neither half of the year dominates here: June through August take 27% of the annual total and December through February 12%, with neither reaching the 35% that would mark a distinct wet season. Douglas has no dry season to plan around, though it does carry a wide 45.9°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: May averages 2.7" and December 0.5". The three wettest months together take 43% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
Douglas is dry, and what does fall arrives gently
Only about 84 days a year record measurable precipitation here, 23% of the calendar, and they carry 14.5" between them. At roughly 0.17 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 11 wet days; the driest is November at about 4.
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 Douglas
Douglas averages 59.0 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 31 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: 59.0 inches of depth.
- Days recording measurable snow: about 31 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
September 23
50% probability date
Last Spring Freeze
May 19
50% probability date
Growing Season
127 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,255
Higher = more heating needed
Cooling Degree Days
488
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside WY closest to Douglas 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 (46°F here).
- Binghamton, NY 46°F · 0.0°F off
- Chewelah, WA 46°F · 0.0°F off
- Delanson, NY 46°F · 0.0°F off
- Gardiner, MT 46°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.5" here), excluding temperature-peer places.
- Cliff, NM 14.5" · 0.0" off
- Northglenn, CO 14.5" · 0.0" off
- Culbertson, MT 14.5" · 0.0" off
- Escondido, CA 14.5" · 0.0" off
Snow and freeze rhythm
When cold and snow define Douglas
heating led · dry · mid swing
Douglas's energy balance leans toward cold weather: 7,255 annual heating degree days against 488 for cooling. Its 45.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 127 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. Douglas coldest normal
January
The monthly mean of 26°F (-4°C) sits near freezing, so cold nights and above-freezing afternoons share the same month.
-
2. Douglas typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Douglas snow peak
February
Douglas averages 59.0 inches of snow a year, with February the snowiest month on the normals.
Questions about Douglas's climate
How much snow does Douglas get? ▼
How many days above 90°F does Douglas get? ▼
How much energy does heating and cooling require in Douglas? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Douglas's primary station: DOUGLAS 1 SE (USC00482685). 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 5621125). Match rule for Douglas: 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 Douglas 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.