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Weather in Hartville, WY · National Weather Service + NOAA

Hartville has a long growing season

Hartville has cold winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 15°, and about 28 inches of snow falls in a normal winter. In November, a normal day reaches 49° and a normal night drops to 21°.

Winter 40°/15°Spring 60°/31°Summer 85°/52°Fall 63°/32°
Right now
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Sunrise 8:38 am · sunset 6:46 pm

Getting the latest forecast from the National Weather Service…

What stands out about Hartville’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
A long growing season152 frost-free days, from May 7 to Oct 6.A dry climateJust 14 inches of rain and melted snow a year, less than 95% of U.S. towns.Less snow than most of WyomingAbout 28 inches a winter, less than 162 of 184 Wyoming towns.
A normal year

Where today sits in Hartville’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
40° / 15°
10 days with an inch or more of snow
Spring
60° / 31°
Last frost around May 7
Summer
85° / 52°
46 days reach 90° in a normal year
Fall now
63° / 32°
First frost around Oct 6
Pastthe usual first frost (Oct 6). Last frost next spring: May 7
Best months to be outside
JunSep
Highs of 62–84° and lows of 40° or more
How much snow does Hartville get?About 28 inches a winter.When is it wettest?May, with 2.6 inches.Is it warmer than it used to be?+1.6° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Hartville.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Hartville itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Old Ft Laramie, WY (12 mi, snow) and Guernsey 2nw, WY (4 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.