Toppenish has chilly winters and warm summers, with very little rain
A typical July afternoon reaches 90°, a January night drops to 26°, and about 20 inches of snow falls in a normal winter.
A year in Toppenish at a glance
Each month’s typical high and low, and what it brings.
What stands out about Toppenish’s climate
Read from where Toppenish sits among Washington’s towns. The page puts what stands out first.
About 176 frost-free days a year
In half of years the last 32° night comes by April 21 and the first by October 15.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
20 inches of snow, 8 of rain and melt
December is the wettest month and July the driest. Rain or snow falls on about 68 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
What a year in Toppenish feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Living with Toppenish’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
176 frost-free days. The last frost comes by Apr 21 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 15.
About 20" a winter over 6 days with an inch or more, most in December.
Months averaging under 55° run from October through April. Heating is 87% of the year’s heating-and-cooling load.
About 41 days a year reach 90°, and July afternoons average 90°.
The nicest months are May, June and September. 1.2 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Warmer than it used to be
The last 30 years in Toppenish averaged 1.0° warmer than the 1900s. The biggest change is in January (+3.4°).
A smaller shift than in 67% of U.S. towns.
Change by month
How Toppenish compares
Against every U.S. town on TownTapestry, each counted once, with its place in Washington.
Toppenish 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 40° | 26° | 1.1" | 5.2" | 9 | 24° – 38° |
| February | 47° | 28° | 0.7" | 1.1" | 6 | 25° – 44° |
| March | 57° | 33° | 0.6" | 0.3" | 6 | 37° – 51° |
| April | 65° | 39° | 0.7" | 0 | 5 | 47° – 59° |
| May | 74° | 47° | 0.8" | 0 | 6 | 55° – 67° |
| June | 81° | 53° | 0.6" | 0 | 5 | 63° – 76° |
| July | 90° | 58° | 0.2" | 0 | 3 | 66° – 79° |
| August | 89° | 57° | 0.2" | 0 | 2 | 67° – 77° |
| September | 80° | 49° | 0.3" | 0 | 3 | 60° – 68° |
| October | 65° | 39° | 0.8" | 0.2" | 6 | 46° – 58° |
| November | 50° | 31° | 0.9" | 1.6" | 8 | 34° – 47° |
| December | 39° | 26° | 1.2" | 12.0" | 10 | 26° – 38° |
| Year | 65° | 40° | 8.2" | 20.4" | 68 |
Heating and cooling a home in Toppenish
87% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 25° to 44°. September is the most reliable, staying within 8°.
Common questions about Toppenish’s climate
What is the coldest month in Toppenish?
December, with a typical high of 39° and a low of 26°.
What is the hottest month in Toppenish?
July, with a typical high of 90° and a low of 58°. About 41 days a year reach 90°.
How much snow does Toppenish get?
About 20 inches in a normal winter, most of it in December.
When is the first frost in Toppenish?
In half of years the first 32° night comes by October 15, and the last spring frost by April 21.
What is the rainiest month in Toppenish?
December, with 1.2 inches of rain and melted snow. The year totals 8 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Toppenish.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Toppenish itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Wapato, WA (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.