Yoncalla, OR climate
Yoncalla has mild winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 36°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Yoncalla feels like
Winter
Spring
Summer
Fall
Yoncalla 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 | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 48° | 36° | 6.9" | 0 | 20 | 0 | 37° – 47° |
| February | 52° | 36° | 5.1" | 0 | 17 | 0 | 37° – 50° |
| March | 57° | 38° | 5.3" | 0 | 19 | 0 | 43° – 55° |
| April | 62° | 40° | 4.1" | 0 | 17 | 0 | 47° – 55° |
| May | 69° | 45° | 2.8" | 0 | 12 | 0 | 52° – 63° |
| June | 74° | 49° | 1.4" | 0 | 8 | 0 | 58° – 68° |
| July | 83° | 53° | 0.4" | 0 | 2 | 0 | 62° – 71° |
| August | 83° | 53° | 0.4" | 0 | 3 | 0 | 65° – 71° |
| September | 78° | 49° | 1.4" | 0 | 6 | 0 | 61° – 67° |
| October | 65° | 44° | 3.7" | 0 | 13 | 0 | 50° – 60° |
| November | 53° | 40° | 6.8" | 0 | 20 | 0 | 41° – 51° |
| December | 47° | 36° | 8.4" | 0 | 20 | 0 | 35° – 45° |
| Year | 64° | 43° | 46.6" | 0.0" | 158 | 1 |
“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 Yoncalla
Yoncalla gets 47 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 158 days a year.
About 193 frost-free days a year
In half of years the last 32° night comes by April 16 and the first one by October 25. That leaves about 193 frost-free days for gardens, longer than 67% of U.S. towns.
Heating and cooling a home in Yoncalla
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Yoncalla, 93% of that work is heating and 7% 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 Yoncalla 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 Yoncalla averaged 1.3° warmer than the 1900s. The biggest change is in January (+2.3°). The shift is larger than in 53% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Yoncalla’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 37° to 50°. September is the most reliable, staying within 6°.
Common questions about Yoncalla’s climate
What is the coldest month in Yoncalla?
December, with a typical high of 47° and a low of 36°.
What is the hottest month in Yoncalla?
August, with a typical high of 83° and a low of 53°. About 26 days a year reach 90°.
How much snow does Yoncalla get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Yoncalla?
In half of years the first 32° night comes by October 25, and the last spring frost by April 16.
What is the rainiest month in Yoncalla?
December, with 8.4 inches of rain and melted snow. The year totals 47 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Yoncalla itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Drain, OR (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.