Harrington, WA climate
Harrington has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 85°, a January night drops to 22°, and about 24 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Harrington feels like
Winter
Spring
Summer
Fall
Harrington 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 | 34° | 22° | 1.6" | 7.8" | 10 | 15 | 18° – 35° |
| February | 40° | 24° | 1.1" | 3.3" | 8 | 8 | 20° – 40° |
| March | 50° | 28° | 1.4" | 1.4" | 10 | 1 | 30° – 45° |
| April | 58° | 32° | 1.0" | 0.2" | 7 | 0 | 40° – 51° |
| May | 68° | 39° | 1.2" | 0 | 7 | 0 | 49° – 59° |
| June | 75° | 44° | 1.0" | 0 | 6 | 0 | 55° – 68° |
| July | 85° | 50° | 0.4" | 0 | 3 | 0 | 61° – 72° |
| August | 84° | 49° | 0.3" | 0 | 3 | 0 | 61° – 70° |
| September | 75° | 42° | 0.4" | 0 | 3 | 0 | 54° – 63° |
| October | 59° | 33° | 1.1" | 0.1" | 7 | 0 | 40° – 52° |
| November | 43° | 26° | 1.6" | 3.4" | 11 | 3 | 27° – 43° |
| December | 33° | 21° | 1.8" | 7.3" | 10 | 11 | 20° – 33° |
| Year | 59° | 34° | 13.0" | 23.5" | 84 | 38 |
“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 Harrington
Harrington gets 13 inches of rain and melted snow a year. December is the wettest month and August the driest. Rain or snow falls on about 84 days a year. Snow covers the ground about 38 days of the year.
About 101 frost-free days a year
In half of years the last 32° night comes by May 31 and the first one by September 12. That leaves about 101 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Harrington
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Harrington, 96% of that work is heating and 4% 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 Harrington 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 Harrington averaged 0.7° warmer than the 1900s. The biggest change is in January (+3.7°). The shift is smaller than in 90% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Harrington’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 20° to 40°. September is the most reliable, staying within 9°.
Common questions about Harrington’s climate
What is the coldest month in Harrington?
December, with a typical high of 33° and a low of 21°.
What is the hottest month in Harrington?
July, with a typical high of 85° and a low of 50°. About 21 days a year reach 90°.
How much snow does Harrington get?
About 24 inches in a normal winter, most of it in January.
When is the first frost in Harrington?
In half of years the first 32° night comes by September 12, and the last spring frost by May 31.
What is the rainiest month in Harrington?
December, with 1.8 inches of rain and melted snow. The year totals 13 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Harrington itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Harrington, WA (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.