Climate Comfort Score
27/100
Below Average
2026 data Public-data reference. official source
Rock Springs, WY Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Rock Springs, Wyoming has an average annual temperature of 44°F and a climate comfort score of 27/100 (Below Average). Annual precipitation totals 7.5", including 54.0" of snow. Based on NOAA 30-year normals (1991–2020).
Avg Temperature
44°F (7°C)
Avg High
55°F
Avg Low
32°F
Annual Precip
7.5"
Annual Snow
54.0"
Comfort Score
27/100
Below Average
Avg Annual Temperature
44°F
30-year mean (NOAA NCEI)
Annual Precipitation
7.5"
Plus 54.0" of snow
Comfort score vs national 100-point ceiling (Rock Springs) 27.0%
National median (≈55)
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Rock Springs area.
Warming context for Rock Springs
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Rock Springs captures average conditions across the spread shown — the most recent decade is 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 | 30°F (-1°C) | 14°F (-10°C) | 22°F (-6°C) | 0.4" | 8.2" | 30.8 | 0.0 |
| February | 33°F (0°C) | 16°F (-9°C) | 24°F (-4°C) | 0.4" | 7.9" | 27.4 | 0.0 |
| March | 44°F (7°C) | 24°F (-4°C) | 34°F (1°C) | 0.6" | 6.4" | 27.5 | 0.0 |
| April | 53°F (12°C) | 30°F (-1°C) | 41°F (5°C) | 0.9" | 8.8" | 20.7 | 0.0 |
| May | 63°F (17°C) | 38°F (4°C) | 51°F (10°C) | 1.3" | 2.7" | 7.2 | 0.0 |
| June | 75°F (24°C) | 47°F (8°C) | 61°F (16°C) | 0.7" | 0.4" | 0.7 | 1.1 |
| July | 84°F (29°C) | 55°F (13°C) | 69°F (21°C) | 0.5" | 0.0" | 0.0 | 6.6 |
| August | 82°F (28°C) | 53°F (12°C) | 67°F (20°C) | 0.6" | 0.0" | 0.0 | 2.1 |
| September | 71°F (22°C) | 44°F (7°C) | 57°F (14°C) | 0.8" | 1.2" | 2.1 | 0.1 |
| October | 56°F (13°C) | 33°F (0°C) | 45°F (7°C) | 0.8" | 6.6" | 15.0 | 0.0 |
| November | 41°F (5°C) | 22°F (-6°C) | 31°F (0°C) | 0.4" | 6.0" | 26.7 | 0.0 |
| December | 30°F (-1°C) | 13°F (-10°C) | 21°F (-6°C) | 0.3" | 5.8" | 30.6 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 0.4"
Snow: 8.2"
5.3 days with precipitation
February 0.4"
Snow: 7.9"
5.1 days with precipitation
March 0.6"
Snow: 6.4"
6.6 days with precipitation
April 0.9"
Snow: 8.8"
8.3 days with precipitation
May 1.3"
Snow: 2.7"
9.0 days with precipitation
June 0.7"
Snow: 0.4"
5.5 days with precipitation
July 0.5"
4.7 days with precipitation
August 0.6"
6.0 days with precipitation
September 0.8"
Snow: 1.2"
6.1 days with precipitation
October 0.8"
Snow: 6.6"
5.9 days with precipitation
November 0.4"
Snow: 6.0"
4.8 days with precipitation
December 0.3"
Snow: 5.8"
4.8 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 28
50% probability date
Last Spring Freeze
May 22
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,064
Higher = more heating needed
Cooling Degree Days
319
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 | 67% | 12.4 | 54% | 20% |
| February | 62% | 12.3 | 53% | 18% |
| March | 51% | 12.6 | 48% | 19% |
| April | 45% | 12.5 | 46% | 18% |
| May | 42% | 11.0 | 53% | 12% |
| June | 30% | 10.0 | 69% | 3% |
| July | 33% | 8.8 | 65% | 5% |
| August | 33% | 9.1 | 65% | 5% |
| September | 42% | 10.0 | 68% | 11% |
| October | 52% | 11.5 | 59% | 19% |
| November | 63% | 11.8 | 57% | 20% |
| December | 67% | 11.9 | -363% | -397% |
Related Data
PlainEnviro
EPA environmental data — pollution, water quality, and environmental health by location
PlainCarbon
Carbon emissions data — greenhouse gas reporting and facility-level CO2 data
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PlainAirData
EPA air quality data — AQI readings, pollutant levels, and air quality trends
Climate Guides
Climate Insight: Rock Springs, WY
The NOAA 1991–2020 climate normals describe Rock Springs, Wyoming as a location with an annual average temperature of 44°F, ranging from a mean daily high of 55°F to a mean daily low of 32°F. July is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USW00024027, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Rock Springs receives roughly 7.5 inches of precipitation each year, with 54.0 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near May 22 and the first fall freeze near September 28. For energy use, 8,064 heating degree days and 319 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Rock Springs scores 27/100 (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 Rock Springs, WY? ▼
The average annual temperature in Rock Springs, Wyoming is 44°F. The warmest month averages 84°F (29°C) and the coldest averages 13°F (-10°C).
How much rain does Rock Springs get? ▼
Rock Springs receives 7.5 inches of precipitation annually, including 54.0 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Rock Springs? ▼
Rock Springs has a climate comfort score of 27/100 (Below Average). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Rock Springs? ▼
Growing season data is not available for Rock Springs.
How much energy does heating and cooling require in Rock Springs? ▼
Rock Springs has 8,064 heating degree days and 319 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Rock Springs climate data come from? ▼
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USW00024027. These 30-year averages are the standard reference for typical weather conditions.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00024027. 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
