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Weather in Mackay, ID · National Weather Service + NOAA

Winter means it in Mackay

Mackay has cold winters and pleasant summers, with very little rain. A typical July afternoon reaches 83°, a January night drops to 6°, and about 18 inches of snow falls in a normal winter. In November, a normal day reaches 41° and a normal night drops to 17°.

Winter 31°/8°Spring 54°/28°Summer 79°/45°Fall 56°/28°
Right now
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Sunrise 9:12 am · sunset 7:23 pm

Getting the latest forecast from the National Weather Service…

What stands out about Mackay’s weather

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

Climate →
Among Idaho’s coldest wintersJanuary nights average 6°, colder than 231 of 234 Idaho towns.A dry climateJust 10 inches of rain and melted snow a year, less than 98% of U.S. towns.A long heating seasonMore heating degree days than 90% of U.S. towns.
A normal year

Where today sits in Mackay’s year

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

Full climate →
Winter
31° / 8°
10 days with an inch or more of snow
Spring
54° / 28°
Last frost around Jun 1
Summer
79° / 45°
7 days reach 90° in a normal year
Fall now
56° / 28°
First frost around Sep 20
Pastthe usual first frost (Sep 20). Last frost next spring: Jun 1
Best months to be outside
JunJulAug
Highs of 62–84° and lows of 40° or more
How much snow does Mackay get?About 18 inches a winter.When is it wettest?May, with 1.4 inches.Is it warmer than it used to be?+1.3° vs. the 20th century.

Weather talk

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

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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 Mackay itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Chilly Barton Flat, ID (12 mi, snow) and Mackay Lost Rvr Rs, ID (1 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.