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Rock Springs, WY weather and climate

Sweetwater County, WY · population 23,229 · about 6,280 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Rock Springs's own coordinates.

The year at a glance

Sunny days
245
clear or partly cloudy, per year
Precipitation
11 in
per year
Wet days
89
rain or snow per year
Snowfall
32 in
per year
Hot days
16
above 90 °F
Freezing nights
184
at or below 32 °F
Humidity
57%
average relative
Average temperature
45 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
255075JanMarMayJulSepNovDaily high, Jan: 34 °FDaily high, Feb: 38 °FDaily high, Mar: 48 °FDaily high, Apr: 57 °FDaily high, May: 67 °FDaily high, Jun: 78 °FDaily high, Jul: 86 °FDaily high, Aug: 84 °FDaily high, Sep: 75 °FDaily high, Oct: 61 °FDaily high, Nov: 45 °FDaily high, Dec: 33 °FDaily low, Jan: 12 °FDaily low, Feb: 15 °FDaily low, Mar: 23 °FDaily low, Apr: 29 °FDaily low, May: 37 °FDaily low, Jun: 45 °FDaily low, Jul: 53 °FDaily low, Aug: 51 °FDaily low, Sep: 41 °FDaily low, Oct: 31 °FDaily low, Nov: 21 °FDaily low, Dec: 12 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high343848576778868475614533
Daily low121523293745535141312112

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.00.51.01.5JanMarMayJulSepNovRock Springs, Jan: 0.7 inRock Springs, Feb: 0.7 inRock Springs, Mar: 1.1 inRock Springs, Apr: 1.6 inRock Springs, May: 1.6 inRock Springs, Jun: 0.8 inRock Springs, Jul: 0.5 inRock Springs, Aug: 0.5 inRock Springs, Sep: 0.9 inRock Springs, Oct: 1.1 inRock Springs, Nov: 0.8 inRock Springs, Dec: 0.7 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rock Springs0.70.71.11.61.60.80.50.50.91.10.80.7

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovRock Springs, Jan: 16 daysRock Springs, Feb: 15 daysRock Springs, Mar: 19 daysRock Springs, Apr: 17 daysRock Springs, May: 19 daysRock Springs, Jun: 24 daysRock Springs, Jul: 27 daysRock Springs, Aug: 26 daysRock Springs, Sep: 25 daysRock Springs, Oct: 23 daysRock Springs, Nov: 19 daysRock Springs, Dec: 15 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rock Springs161519171924272625231915

Compare Rock Springs with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered Wyoming city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).