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Casper, WY vs Gillette, WY weather comparison

Casper

WY

Casper picks up around 27 more inches of snow each winter.

Casper enjoys about 18 more sunny days a year than Gillette.

The year at a glance

Averages from 30 years of climate history, 1991-2020

Annual weather statistics for Casper, WY and Gillette, WY
CasperMetricGillette
256 daysSunny daysclear or partly cloudy skies239 days
16 inPrecipitationper year18 in
96 daysWet daysrain or snow per year106 days
83 inSnowfallper year55 in
32 daysHot daysabove 90 °F29 days
160 daysFreezing nightsat or below 32 °F169 days
57%Humidityaverage relative58%
47 °FAverage temperatureyear round47 °F

Monthly temperatures

Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.

CasperGillette

Daily highs

406080JanMarMayJulSepNovCasper, Jan: 38 °FCasper, Feb: 39 °FCasper, Mar: 49 °FCasper, Apr: 56 °FCasper, May: 66 °FCasper, Jun: 79 °FCasper, Jul: 88 °FCasper, Aug: 86 °FCasper, Sep: 76 °FCasper, Oct: 60 °FCasper, Nov: 48 °FCasper, Dec: 37 °FGillette, Jan: 36 °FGillette, Feb: 38 °FGillette, Mar: 49 °FGillette, Apr: 56 °FGillette, May: 66 °FGillette, Jun: 77 °FGillette, Jul: 87 °FGillette, Aug: 85 °FGillette, Sep: 75 °FGillette, Oct: 59 °FGillette, Nov: 46 °FGillette, Dec: 36 °F

Daily lows

204060JanMarMayJulSepNovCasper, Jan: 16 °FCasper, Feb: 17 °FCasper, Mar: 25 °FCasper, Apr: 31 °FCasper, May: 40 °FCasper, Jun: 50 °FCasper, Jul: 57 °FCasper, Aug: 55 °FCasper, Sep: 44 °FCasper, Oct: 34 °FCasper, Nov: 25 °FCasper, Dec: 17 °FGillette, Jan: 15 °FGillette, Feb: 17 °FGillette, Mar: 24 °FGillette, Apr: 31 °FGillette, May: 41 °FGillette, Jun: 50 °FGillette, Jul: 57 °FGillette, Aug: 55 °FGillette, Sep: 46 °FGillette, Oct: 34 °FGillette, Nov: 24 °FGillette, Dec: 16 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Casper high383949566679888676604837
Gillette high363849566677878575594636
Casper low161725314050575544342517
Gillette low151724314150575546342416

Monthly precipitation

Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.

CasperGillette
0.01.02.03.0JanMarMayJulSepNovCasper, Jan: 0.8 inCasper, Feb: 1.0 inCasper, Mar: 1.5 inCasper, Apr: 2.3 inCasper, May: 2.7 inCasper, Jun: 1.4 inCasper, Jul: 0.7 inCasper, Aug: 0.6 inCasper, Sep: 1.1 inCasper, Oct: 1.8 inCasper, Nov: 1.1 inCasper, Dec: 0.9 inGillette, Jan: 0.6 inGillette, Feb: 0.8 inGillette, Mar: 1.4 inGillette, Apr: 2.4 inGillette, May: 3.1 inGillette, Jun: 2.3 inGillette, Jul: 1.4 inGillette, Aug: 1.2 inGillette, Sep: 1.4 inGillette, Oct: 1.9 inGillette, Nov: 0.8 inGillette, Dec: 0.7 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Casper0.81.01.52.32.71.40.70.61.11.81.10.9
Gillette0.60.81.42.43.12.31.41.21.41.90.80.7

Monthly sunny days

Days each month with clear or partly cloudy skies, so compare the same month between cities.

CasperGillette
01020JanMarMayJulSepNovCasper, Jan: 20 daysCasper, Feb: 18 daysCasper, Mar: 19 daysCasper, Apr: 17 daysCasper, May: 18 daysCasper, Jun: 24 daysCasper, Jul: 27 daysCasper, Aug: 26 daysCasper, Sep: 25 daysCasper, Oct: 22 daysCasper, Nov: 21 daysCasper, Dec: 21 daysGillette, Jan: 18 daysGillette, Feb: 16 daysGillette, Mar: 17 daysGillette, Apr: 15 daysGillette, May: 17 daysGillette, Jun: 22 daysGillette, Jul: 27 daysGillette, Aug: 27 daysGillette, Sep: 23 daysGillette, Oct: 20 daysGillette, Nov: 19 daysGillette, Dec: 19 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Casper201819171824272625222121
Gillette181617151722272723201919

Keep comparing

Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.

Casper vs another city

See the full Casper, WY climate profile

More Wyoming cities

Gillette vs another city

See the full Gillette, WY climate profile

More Wyoming cities

About this data

Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. 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).