Wallowa, OR climate
Wallowa has chilly, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 87°, a January night drops to 21°, and about 48 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Wallowa feels like
Winter
Spring
Summer
Fall
Wallowa weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 37° | 21° | 1.7" | 12.4" | 13 | 20° – 35° |
| February | 43° | 23° | 1.4" | 10.4" | 11 | 25° – 40° |
| March | 52° | 28° | 1.5" | 3.2" | 13 | 31° – 44° |
| April | 59° | 32° | 1.8" | 1.0" | 11 | 40° – 53° |
| May | 68° | 38° | 2.2" | 0.1" | 12 | 49° – 58° |
| June | 75° | 43° | 1.7" | 0 | 9 | 56° – 65° |
| July | 87° | 48° | 0.6" | 0 | 4 | 59° – 72° |
| August | 87° | 46° | 0.7" | 0 | 5 | 62° – 69° |
| September | 77° | 39° | 0.8" | 0 | 5 | 54° – 63° |
| October | 62° | 32° | 1.5" | 0.2" | 11 | 41° – 53° |
| November | 46° | 26° | 1.9" | 5.8" | 15 | 29° – 41° |
| December | 37° | 20° | 2.0" | 14.8" | 14 | 20° – 33° |
| Year | 61° | 33° | 17.8" | 47.9" | 122 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Wallowa
Wallowa gets 18 inches of rain and melted snow a year. May is the wettest month and July the driest. Rain or snow falls on about 122 days a year.
About 91 frost-free days a year
In half of years the last 32° night comes by June 7 and the first one by September 9. That leaves about 91 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Wallowa
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Wallowa, 97% of that work is heating and 3% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Wallowa compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Wallowa averaged 1.6° warmer than the 1900s. The biggest change is in January (+3.3°). The shift is larger than in 73% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Wallowa’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 25° to 40°. August is the most reliable, staying within 7°.
Common questions about Wallowa’s climate
What is the coldest month in Wallowa?
December, with a typical high of 37° and a low of 20°.
What is the hottest month in Wallowa?
August, with a typical high of 87° and a low of 46°. About 37 days a year reach 90°.
How much snow does Wallowa get?
About 48 inches in a normal winter, most of it in December.
When is the first frost in Wallowa?
In half of years the first 32° night comes by September 9, and the last spring frost by June 7.
What is the rainiest month in Wallowa?
May, with 2.2 inches of rain and melted snow. The year totals 18 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Wallowa itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Wallowa, OR (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.