Powell Fld Stn, WY Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Powell Fld Stn's primary NOAA station, POWELL FLD STN.
The climate verdict for Powell Fld Stn
Dryness leads the climate profile for Powell Fld Stn, Wyoming, with 6.7 inches of precipitation a year. NOAA records an annual average of 43°F. At 34/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 2% of scores.
- 43°F
- yearly average temperature, NOAA normal
- 34/100
- comfort score, above 2% of station-mapped location scores
- 6.7"
- annual precipitation · 11" snow
- 124 days
- frost-free days per growing season
Powell Fld Stn: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00487388 · Powell Fld Stn, WY 43°F mean · 6.7" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-ARID · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 43°F
- RANK-COOL #823
- PHOTO-FINISH ≈ Grayling
- PRCP-ARID 6.7"
- SWING-WIDE 50°F
- COMF-LOW 34/100
- LOAD-HEAT 8,227 HDD
- STN-1 USC00487388
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Grayling, MI (+ 0.1 °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.
- Powell Fld (this station) 43°F
- Cold Wanakena Rngr S…, NY 43°F
- Hot Ontonagon, MI 43°F
- Near Grayling, MI 43°F
- Near Madison, ME 43°F
Powell Fld Stn 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 · Powell Fld Stn
Powell Fld Stn: 17/100 · grade F
Powell Fld Stn publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Powell Fld Stn, not an official NOAA rating. Rankings still use Comfort Score 34/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 11.2 inches/year | 61/100 · C |
| Normal heat + freeze calendar | 200 calendar days | 14/100 · F |
| Annual temperature balance | 43.2°F · 24.3° from 67.5°F | 13/100 · F |
| Frost-free season | 124 days/year | 9/100 · F |
| Precipitation balance | 6.7 in · 28.3 from 35 in | 5/100 · F |
Powell Fld Stn · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Powell Fld Stn's normals sit in a dry climate class: BWk
Annual precipitation falls well below the aridity threshold for this temperature regime, so the normals classify as cold desert (BWk). Class BWk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold desert.
- Köppen code
- BWk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 68.8°F
- Coldest month
- 18.8°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 Powell Fld Stn sits across the climate record
Three NOAA fields for Powell Fld Stn's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 88%
- Among 6,861 stations, Powell Fld Stn sits in the cooler third of annual means.
- Annual precipitation
- Drier than 98%
- Powell Fld Stn's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 81%
- Warmest-to-coldest month gap for Powell Fld Stn is large versus 6,861 complete station-years.
How Powell Fld Stn compares across U.S. station-mapped locations
Powell Fld Stn's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
34 2nd percentile score exceeds 2% 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%). This entry sits in this band.
- 40–50: 1,113 station-mapped locations (18%). Above this entry.
- 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
Powell Fld Stn's measured station temperature trend
MethodologyAcross 94 complete annual observations from 1909 to 2021, POWELL FLD STN warmed at a fitted rate of 0.09°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Powell Fld Stn primary station fitted change +0.09 °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 | 32°F (0°C) | 6°F (-14°C) | 19°F (-7°C) | 0.2" | 2.6" | 31.0 | 0.0 |
| February | 36°F (2°C) | 10°F (-12°C) | 23°F (-5°C) | 0.2" | 1.8" | 27.7 | 0.0 |
| March | 48°F (9°C) | 20°F (-7°C) | 34°F (1°C) | 0.3" | 1.7" | 27.7 | 0.0 |
| April | 57°F (14°C) | 28°F (-2°C) | 43°F (6°C) | 0.6" | 0.8" | 18.6 | 0.0 |
| May | 66°F (19°C) | 40°F (4°C) | 53°F (12°C) | 1.2" | 0.1" | 4.5 | 0.3 |
| June | 76°F (24°C) | 47°F (8°C) | 62°F (16°C) | 1.3" | 0.0" | 0.1 | 2.8 |
| July | 85°F (30°C) | 52°F (11°C) | 69°F (20°C) | 0.8" | 0.0" | 0.1 | 11.1 |
| August | 84°F (29°C) | 50°F (10°C) | 67°F (19°C) | 0.4" | 0.0" | 0.0 | 8.6 |
| September | 73°F (23°C) | 41°F (5°C) | 57°F (14°C) | 0.8" | 0.0" | 2.6 | 1.5 |
| October | 58°F (14°C) | 29°F (-2°C) | 43°F (6°C) | 0.7" | 1.1" | 18.6 | 0.0 |
| November | 43°F (6°C) | 17°F (-8°C) | 30°F (-1°C) | 0.2" | 1.6" | 28.6 | 0.0 |
| December | 33°F (0°C) | 8°F (-13°C) | 20°F (-6°C) | 0.1" | 1.5" | 31.0 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 87°F around July 24, short of 90°F on every date, while 200 dates carry a normal low at or below freezing, the coldest 6°F near January 7.
The freezing stretch
The normal low stays at or below 32°F into April 26, then returns to freezing around October 10, 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 27, when 31% of years recorded at least a hundredth of an inch. The driest is January 1 at 9%. Summed across the calendar, that is about 58 wet dates a year.
The widest day
August 20 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 Powell Fld Stn.
Where Powell Fld Stn 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.
Aridity defines the water calendar: about 7 inches in a normal year lands this among the driest tenth of ranked stations.
Powell Fld Stn 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: 2.6"
3.0 days with precipitation
Snow: 1.8"
2.9 days with precipitation
Snow: 1.7"
3.1 days with precipitation
Snow: 0.8"
5.9 days with precipitation
Snow: 0.1"
8.6 days with precipitation
8.0 days with precipitation
5.7 days with precipitation
4.8 days with precipitation
5.1 days with precipitation
Snow: 1.1"
4.5 days with precipitation
Snow: 1.6"
3.0 days with precipitation
Snow: 1.5"
2.8 days with precipitation
Powell Fld Stn runs a summer-peaked wet season
38% of Powell Fld Stn'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 June at 1.3", on a wide 50°F gap between its warmest and coldest month. 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: June, May, July, taking 50% of the annual total between them.
- Driest month: December at 0.1".
- Winter share: 7% 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.
Powell Fld Stn is dry, and what does fall arrives gently
Only about 57 days a year record measurable precipitation here, 16% of the calendar, and they carry 6.7" between them. At roughly 0.12 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 9 wet days; the driest is December at about 3.
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.
Snow reaches Powell Fld Stn, but rarely amounts to much
The normals record 11.2 inches of snow a year here, most likely in January. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 11 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
September 20
50% probability date
Last Spring Freeze
May 19
50% probability date
Growing Season
124 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,227
Higher = more heating needed
Cooling Degree Days
329
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside WY closest to Powell Fld Stn 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 (43°F here).
- Beulah, ND 43°F · 0.0°F off
- Ellendale, ND 43°F · 0.0°F off
- Livermore Falls, ME 43°F · 0.0°F off
- McLaughlin, SD 43°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (6.7" here), excluding temperature-peer places.
- Randsburg, CA 6.7" · 0.0" off
- Grand View, ID 6.7" · 0.0" off
- Yucca, AZ 6.7" · 0.0" off
- Goodsprings, NV 6.6" · 0.1" off
Scarce-water calendar
Where Powell Fld Stn's limited precipitation lands
heating led · dry · mid swing
Powell Fld Stn's energy balance leans toward cold weather: 8,227 annual heating degree days against 329 for cooling. Its 50.0°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 124 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.
July and January mark the typical warm and cold ends of the calendar in Powell Fld Stn's middle-range seasonal profile. The measured spread is 50.0°F. The annual average is 43°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Powell Fld Stn's cold-season load does not imply a wet climate. Annual precipitation is 6.7 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 11.2 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Powell Fld Stn wettest normal
June
June concentrates the scarce annual total (6.7 inches).
Powell Fld Stn driest normal
December
December is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Powell Fld Stn's climate
How dry is Powell Fld Stn? ▼
How cold does Powell Fld Stn get in winter? ▼
How much energy does heating and cooling require in Powell Fld Stn? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Powell Fld Stn's primary station: POWELL FLD STN (USC00487388). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Powell Fld Stn; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Powell Fld Stn 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.