Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 45°F annual avg Public-domain federal data
Powder River, WY Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 45°F
- Avg annual temp
- 39/100
- Comfort score
- 120d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Powder River
Powder River, Wyoming averages 45°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 45°F
- yearly average temperature, NOAA normal
- 39/100
- comfort score, milder than 4% of U.S. cities
- 120 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
45°F (7°C)
Avg High
59°F
Avg Low
30°F
Annual Precip
N/A
Comfort Score
39/100
Below Average
Avg Annual Temperature
45°F
30-year mean (NOAA NCEI)
Annual Precipitation
N/A
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Powder River) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Powder River area.
How Powder River compares to every U.S. city
Powder River's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
39 Top 96% higher than 4% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Powder River
MethodologyZooming out from Powder River's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 34°F (1°C) | 10°F (-12°C) | 22°F (-6°C) | N/A | 30.3 | 0.0 |
| February | 37°F (3°C) | 13°F (-10°C) | 25°F (-4°C) | N/A | 27.6 | 0.0 |
| March | 49°F (9°C) | 22°F (-5°C) | 36°F (2°C) | N/A | 26.9 | 0.0 |
| April | 56°F (13°C) | 29°F (-2°C) | 43°F (6°C) | N/A | 20.7 | 0.0 |
| May | 66°F (19°C) | 37°F (3°C) | 52°F (11°C) | N/A | 6.8 | 0.1 |
| June | 79°F (26°C) | 46°F (8°C) | 62°F (17°C) | N/A | 0.4 | 3.4 |
| July | 88°F (31°C) | 52°F (11°C) | 70°F (21°C) | N/A | 0.0 | 15.6 |
| August | 87°F (30°C) | 51°F (11°C) | 69°F (20°C) | N/A | 0.0 | 13.0 |
| September | 75°F (24°C) | 42°F (5°C) | 59°F (15°C) | N/A | 4.4 | 1.1 |
| October | 59°F (15°C) | 31°F (-1°C) | 45°F (7°C) | N/A | 20.6 | 0.0 |
| November | 44°F (7°C) | 19°F (-7°C) | 32°F (0°C) | N/A | 27.2 | 0.0 |
| December | 32°F (0°C) | 11°F (-12°C) | 22°F (-6°C) | N/A | 29.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January N/A
February N/A
March N/A
April N/A
May N/A
June N/A
July N/A
August N/A
September N/A
October N/A
November N/A
December N/A
Frost Dates & Growing Season
First Fall Freeze
September 20
50% probability date
Last Spring Freeze
May 23
50% probability date
Growing Season
120 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,827
Higher = more heating needed
Cooling Degree Days
411
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Powder River's climate means for you
Powder River runs 45°F a year - peaking in July, coldest in December.
- Gardeners get about 120 frost-free days, with the last spring freeze near May 23 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,827 heating and 411 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Powder River, WY
Powder River, Wyoming runs an annual average of 45°F, ranging from a mean daily high of 59°F to a mean daily low of 30°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while December is the coldest. Drawn from station USC00487376, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Powder River sees about an uncharted amount of precipitation a year, predominantly as rainfall. The frost-free season averages 120 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 23 and the first fall freeze near September 20. On the energy side, 7,827 heating degree days and 411 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Powder River scores 39/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for December-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Powder River, WY? ▼
The average annual temperature in Powder River, Wyoming is 45°F. The warmest month averages 88°F (31°C) and the coldest averages 10°F (-12°C).
How much rain does Powder River get? ▼
Powder River receives an unknown amount of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Powder River? ▼
Powder River has a climate comfort score of 39/100 (Below Average), milder than 4% of U.S. cities in the PlainClimate database.
When is the growing season in Powder River? ▼
Powder River has approximately 120 frost-free days per year, with the last spring freeze around May 23 and the first fall freeze around September 20.
How much energy does heating and cooling require in Powder River? ▼
Powder River has 7,827 heating degree days and 411 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Powder River climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00487376 near Powder River.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00487376. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.