North Sultan, WA climate
North Sultan has mild winters and cool summers, with plenty of rain. A typical July afternoon reaches 75°, a January night drops to 34°, and about 3 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in North Sultan feels like
Winter
Spring
Summer
Fall
North Sultan 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 | 45° | 34° | 10.4" | 0.1" | 20 | 1 | 35° – 45° |
| February | 49° | 34° | 7.3" | 2.2" | 17 | 1 | 33° – 47° |
| March | 53° | 36° | 8.3" | 0.2" | 20 | 0 | 40° – 49° |
| April | 59° | 39° | 6.9" | 0 | 17 | 0 | 44° – 54° |
| May | 65° | 45° | 5.1" | 0 | 14 | 0 | 51° – 59° |
| June | 69° | 49° | 4.1" | 0 | 12 | 0 | 56° – 64° |
| July | 75° | 53° | 1.9" | 0 | 6 | 0 | 60° – 68° |
| August | 77° | 53° | 1.9" | 0 | 6 | 0 | 60° – 68° |
| September | 70° | 49° | 4.0" | 0 | 11 | 0 | 56° – 62° |
| October | 60° | 43° | 8.2" | 0 | 18 | 0 | 48° – 56° |
| November | 50° | 37° | 11.5" | 0.3" | 22 | 0 | 39° – 49° |
| December | 44° | 34° | 10.2" | 0.2" | 22 | 1 | 34° – 43° |
| Year | 60° | 42° | 79.8" | 3.0" | 187 | 3 |
“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 North Sultan
North Sultan gets 80 inches of rain and melted snow a year. November is the wettest month and July the driest. Rain or snow falls on about 187 days a year.
About 192 frost-free days a year
In half of years the last 32° night comes by April 15 and the first one by October 25. That leaves about 192 frost-free days for gardens, longer than 66% of U.S. towns.
Heating and cooling a home in North Sultan
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In North Sultan, 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 North Sultan 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 North Sultan averaged 1.0° warmer than the 1900s. The biggest change is in January (+2.9°). The shift is smaller than in 72% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at North Sultan’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 33° to 47°. September is the most reliable, staying within 6°.
Common questions about North Sultan’s climate
What is the coldest month in North Sultan?
December, with a typical high of 44° and a low of 34°.
What is the hottest month in North Sultan?
August, with a typical high of 77° and a low of 53°. About 5 days a year reach 90°.
How much snow does North Sultan get?
About 3 inches in a normal winter, most of it in February.
When is the first frost in North Sultan?
In half of years the first 32° night comes by October 25, and the last spring frost by April 15.
What is the rainiest month in North Sultan?
November, with 11.5 inches of rain and melted snow. The year totals 80 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for North Sultan itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Monroe, WA (8 mi, snow) and Startup 1 E, 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.