White Swan, WA climate
White Swan has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 89°, a January night drops to 27°, and about 20 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in White Swan feels like
Winter
Spring
Summer
Fall
White Swan 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 | 41° | 27° | 1.7" | 6.2" | 10 | 11 | 25° – 39° |
| February | 47° | 28° | 1.1" | 2.7" | 7 | 4 | 28° – 45° |
| March | 56° | 33° | 0.8" | 0.6" | 7 | 0 | 40° – 51° |
| April | 64° | 38° | 0.7" | 0 | 6 | 0 | 45° – 58° |
| May | 73° | 45° | 0.6" | 0 | 6 | 0 | 54° – 66° |
| June | 80° | 51° | 0.5" | 0 | 5 | 0 | 61° – 74° |
| July | 89° | 56° | 0.2" | 0 | 2 | 0 | 64° – 76° |
| August | 88° | 54° | 0.2" | 0 | 2 | 0 | 65° – 76° |
| September | 79° | 47° | 0.2" | 0 | 3 | 0 | 59° – 68° |
| October | 65° | 37° | 0.8" | 0.1" | 6 | 0 | 46° – 58° |
| November | 50° | 30° | 1.1" | 3.0" | 8 | 2 | 34° – 46° |
| December | 39° | 25° | 1.7" | 7.7" | 10 | 9 | 26° – 37° |
| Year | 64° | 39° | 9.5" | 20.3" | 72 | 26 |
“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 White Swan
White Swan gets 9 inches of rain and melted snow a year. January is the wettest month and August the driest. Rain or snow falls on about 72 days a year. Snow covers the ground about 26 days of the year.
About 196 frost-free days a year
In half of years the last 32° night comes by April 8 and the first one by October 23. That leaves about 196 frost-free days for gardens, longer than 70% of U.S. towns.
Heating and cooling a home in White Swan
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In White Swan, 87% of that work is heating and 13% 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 White Swan 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 White Swan averaged 1.3° warmer than the 1900s. The biggest change is in January (+4.1°). The shift is larger than in 56% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at White Swan’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 28° to 45°. September is the most reliable, staying within 8°.
Common questions about White Swan’s climate
What is the coldest month in White Swan?
December, with a typical high of 39° and a low of 25°.
What is the hottest month in White Swan?
July, with a typical high of 89° and a low of 56°. About 38 days a year reach 90°.
How much snow does White Swan get?
About 20 inches in a normal winter, most of it in December.
When is the first frost in White Swan?
In half of years the first 32° night comes by October 23, and the last spring frost by April 8.
What is the rainiest month in White Swan?
January, with 1.7 inches of rain and melted snow. The year totals 9 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for White Swan itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Yakima Air Terminal, WA (16 mi, snow) and Yakima #2, WA (17 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.