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Weather in Hanna, WY · National Weather Service + NOAA

Hanna is snow country

Hanna has cold, snowy winters and pleasant summers, with very little rain. A typical July afternoon reaches 83°, a January night drops to 13°, and about 93 inches of snow falls in a normal winter. A typical November afternoon reaches 43°, and nights fall to 21°.

Winter 34°/13°Spring 54°/28°Summer 80°/48°Fall 57°/30°
Right now
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Sunrise 8:42 am · sunset 6:56 pm

Getting the latest forecast from the National Weather Service…

What stands out about Hanna’s weather

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

Climate →
Snow countryAbout 93 inches a winter, more than 176 of 184 Wyoming towns.Warming faster than mostThe last 30 years averaged 1.8° warmer than the 1900s, a bigger shift than 89% of U.S. towns.A dry climateJust 12 inches of rain and melted snow a year, less than 97% of U.S. towns.
A normal year

Where today sits in Hanna’s year

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

Full climate →
Winter
34° / 13°
22 days with an inch or more of snow
Spring
54° / 28°
Last frost around May 28
Summer
80° / 48°
3 days reach 90° in a normal year
Fall now
57° / 30°
First frost around Sep 13
Pastthe usual first frost (Sep 13). Last frost next spring: May 28
Best months to be outside
JunJulAug
Highs of 62–84° and lows of 40° or more
How much snow does Hanna get?About 93 inches a winter.When is it wettest?May, with 1.8 inches.Is it warmer than it used to be?+1.8° vs. the 20th century.

Weather talk

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

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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 Hanna itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Elk Mtn, WY (15 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.