Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 44°F annual avg Public-domain federal data
Green Rvr, WY Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 44°F
- Avg annual temp
- 39/100
- Comfort score
- 10.3"
- Annual precip
- 121d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Green Rvr
Green Rvr, Wyoming averages 44°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 44°F
- average temperature, NOAA 1991-2020 normal
- 39/100
- comfort score, milder than 4% of U.S. cities
- 10.3"
- annual precipitation · 39" snow
- 121 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
44°F (7°C)
Avg High
58°F
Avg Low
30°F
Annual Precip
10.3"
Annual Snow
38.5"
Comfort Score
39/100
Below Average
Avg Annual Temperature
44°F
30-year mean (NOAA NCEI)
Annual Precipitation
10.3"
Plus 38.5" of snow
Comfort score vs national 100-point ceiling (Green Rvr) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Green Rvr area.
How Green Rvr compares to every U.S. city
Green Rvr'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 Green Rvr
MethodologySince 1900, U.S. land temperatures have tracked (and diverged from) the global mean - the chart below shows how. Green Rvr's current NOAA 1991-2020 normal sits within that longer spread, and the most recent decade runs warmer than the 30-year mean.
- 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 31°F (-1°C) | 8°F (-13°C) | 20°F (-7°C) | 0.7" | 6.3" | 30.6 | 0.0 |
| February | 36°F (2°C) | 13°F (-11°C) | 25°F (-4°C) | 0.5" | 7.6" | 27.7 | 0.0 |
| March | 47°F (8°C) | 23°F (-5°C) | 35°F (2°C) | 0.8" | 5.4" | 29.3 | 0.0 |
| April | 56°F (14°C) | 29°F (-1°C) | 43°F (6°C) | 1.3" | 3.9" | 21.6 | 0.0 |
| May | 66°F (19°C) | 38°F (3°C) | 52°F (11°C) | 1.7" | 0.9" | 7.5 | 0.2 |
| June | 78°F (26°C) | 46°F (8°C) | 62°F (17°C) | 0.9" | 0.0" | 0.8 | 4.1 |
| July | 87°F (30°C) | 53°F (12°C) | 70°F (21°C) | 0.5" | 0.0" | 0.0 | 14.1 |
| August | 85°F (29°C) | 51°F (10°C) | 68°F (20°C) | 0.6" | 0.0" | 0.2 | 10.4 |
| September | 76°F (24°C) | 41°F (5°C) | 58°F (15°C) | 0.9" | 0.3" | 4.1 | 1.4 |
| October | 61°F (16°C) | 30°F (-1°C) | 46°F (8°C) | 1.0" | 2.4" | 19.6 | 0.0 |
| November | 44°F (7°C) | 19°F (-7°C) | 31°F (0°C) | 0.7" | 5.0" | 28.2 | 0.0 |
| December | 32°F (0°C) | 10°F (-12°C) | 21°F (-6°C) | 0.6" | 6.7" | 30.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.7"
Snow: 6.3"
5.2 days with precipitation
February 0.5"
Snow: 7.6"
4.8 days with precipitation
March 0.8"
Snow: 5.4"
6.2 days with precipitation
April 1.3"
Snow: 3.9"
7.4 days with precipitation
May 1.7"
Snow: 0.9"
9.1 days with precipitation
June 0.9"
4.9 days with precipitation
July 0.5"
4.6 days with precipitation
August 0.6"
5.4 days with precipitation
September 0.9"
Snow: 0.3"
6.1 days with precipitation
October 1.0"
Snow: 2.4"
6.0 days with precipitation
November 0.7"
Snow: 5.0"
5.1 days with precipitation
December 0.6"
Snow: 6.7"
5.8 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 22
50% probability date
Last Spring Freeze
May 24
50% probability date
Growing Season
121 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,939
Higher = more heating needed
Cooling Degree Days
350
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Green Rvr's climate means for you
Green Rvr runs 44°F a year - peaking in July, coldest in January.
- Gardeners get about 121 frost-free days, with the last spring freeze near May 24 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,939 heating and 350 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: Green Rvr, WY
An annual average temperature of 44°F, ranging from a mean daily high of 58°F to a mean daily low of 30°F is what the NOAA 1991–2020 climate normals report for Green Rvr, Wyoming. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00484065 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Anyone planning to live, garden, or travel in Green Rvr should weigh precipitation alongside temperature: the annual average runs 10.3 inches, with 38.5 inches typically falling as snow. The frost-free season averages 121 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 24 and the first fall freeze near September 22. And on the energy front, 7,939 heating degree days and 350 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Green Rvr scores 39/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Green Rvr, WY? ▼
The average annual temperature in Green Rvr, Wyoming is 44°F. The warmest month averages 87°F (30°C) and the coldest averages 8°F (-13°C).
How much rain does Green Rvr get? ▼
Green Rvr receives 10.3 inches of precipitation annually, including 38.5 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Green Rvr? ▼
Green Rvr 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 Green Rvr? ▼
Green Rvr has approximately 121 frost-free days per year, with the last spring freeze around May 24 and the first fall freeze around September 22.
How much energy does heating and cooling require in Green Rvr? ▼
Green Rvr has 7,939 heating degree days and 350 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 Green Rvr climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00484065 near Green Rvr.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00484065. 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.