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Weather in Annex, OR · National Weather Service + NOAA

Annex has hot summers

Annex has chilly winters and hot summers, with very little rain. A typical July afternoon reaches 94°, a January night drops to 23°, and about 15 inches of snow falls in a normal winter. A typical November afternoon reaches 49°, and nights fall to 28°.

Winter 40°/24°Spring 65°/39°Summer 90°/57°Fall 65°/38°
Right now
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Sunrise 9:26 am · sunset 7:36 pm

Getting the latest forecast from the National Weather Service…

What stands out about Annex’s weather

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

Climate →
Hot summersJuly afternoons average 94°, hotter than 94% of U.S. towns.A dry climateJust 12 inches of rain and melted snow a year, less than 97% of U.S. towns.Plenty of 90° daysAbout 59 days a year reach 90°.
A normal year

Where today sits in Annex’s year

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

Full climate →
Winter
40° / 24°
7 days with an inch or more of snow
Spring
65° / 39°
Last frost around Apr 23
Summer
90° / 57°
59 days reach 90° in a normal year
Fall now
65° / 38°
First frost around Oct 13
Pastthe usual first frost (Oct 13). Last frost next spring: Apr 23
Best months to be outside
MayJunSep
Highs of 62–84° and lows of 40° or more
How much snow does Annex get?About 15 inches a winter.When is it wettest?December, with 1.9 inches.Is it warmer than it used to be?+1.4° vs. the 20th century.

Weather talk

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

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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 Annex itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Malheur Branch Exp Stn, OR (18 mi, snow) and Weiser, 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.