Cascade Valley, WA climate
Cascade Valley has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 90°, a January night drops to 24°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Cascade Valley feels like
Winter
Spring
Summer
Fall
Cascade Valley weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 37° | 24° | 1.0" | 21° – 37° |
| February | 45° | 27° | 0.6" | 25° – 42° |
| March | 55° | 32° | 0.7" | 36° – 49° |
| April | 64° | 37° | 0.7" | 45° – 57° |
| May | 74° | 46° | 0.7" | 54° – 65° |
| June | 80° | 52° | 0.6" | 62° – 75° |
| July | 90° | 58° | 0.3" | 65° – 78° |
| August | 88° | 56° | 0.2" | 66° – 75° |
| September | 79° | 48° | 0.2" | 60° – 67° |
| October | 63° | 38° | 0.7" | 46° – 57° |
| November | 47° | 29° | 0.9" | 32° – 46° |
| December | 36° | 24° | 1.1" | 23° – 36° |
| Year | 63° | 39° | 7.7" |
“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 Cascade Valley
Cascade Valley gets 8 inches of rain and melted snow a year. December is the wettest month and August the driest.
About 165 frost-free days a year
In half of years the last 32° night comes by April 27 and the first one by October 8. That leaves about 165 frost-free days for gardens, shorter than 65% of U.S. towns.
Heating and cooling a home in Cascade Valley
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Cascade Valley, 90% of that work is heating and 10% 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 Cascade Valley 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 Cascade Valley averaged 1.2° warmer than the 1900s. The biggest change is in January (+3.9°). The shift is larger than in 50% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Cascade Valley’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 42°. September is the most reliable, staying within 7°.
Common questions about Cascade Valley’s climate
What is the coldest month in Cascade Valley?
December, with a typical high of 36° and a low of 24°.
What is the hottest month in Cascade Valley?
July, with a typical high of 90° and a low of 58°. About 43 days a year reach 90°.
When is the first frost in Cascade Valley?
In half of years the first 32° night comes by October 8, and the last spring frost by April 27.
What is the rainiest month in Cascade Valley?
December, with 1.1 inches of rain and melted snow. The year totals 8 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Cascade Valley itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Moses Lake Grant Co Airport, WA (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.