Middle Fork Nooksack River Bridge · Photo: Jon Roanhaus · CC BY-SA 3.0Hardly any U.S. towns collect more precipitation than Deming: 78 inches a year
Midwinter brings lows of about 33°. Summers stay cool: July afternoons here are cooler than in almost every U.S. town. The latest 30-year average runs 1.4° warmer than 1901–2000’s, with January up the most. The heating season runs November to April: each of those months averages under 50°.
A year in Deming at a glance
Each month’s typical high and low, and what it brings.
What stands out about Deming’s climate
Compared with towns across the U.S., with Deming’s place in Washington beside it.
What a year in Deming feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 185 frost-free days a year
In half of years the last 32° night comes by April 18 and the first by October 18. Frost and day counts come from NOAA’s station at Clearbrook, WA, 10 miles from the town’s center, 140 ft lower.
The 2023 USDA map puts Deming’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 14°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 11 inches of snow a winter
Snow, measured at Clearbrook, WA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 78 inches a year; November is the wettest month and July the driest. Rain or snow falls on about 168 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Deming
99% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Clearbrook, WA.
Living with Deming’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
185 frost-free days in zone 8a. The last frost comes by Apr 18 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 18.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September.
Parks & trails →Of the yearly building losses FEMA expects in Deming from natural hazards, avalanches are the largest share (79%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Deming and similar climates
TownRatings has no climate map of the towns around Deming yet.
Climates most like Deming’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Deming, WA | 33° | 74° | 78" | 11" |
| Tillamook, OR | 38° | 71° | 87" | 0.2" |
| Brevard, NC | 27° | 83° | 69" | 7.1" |
| Fortuna, CA | 42° | 70° | 55" | 0.7" |
| Signal Mountain, TN | 29° | 85° | 62" | 4.3" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Deming averaged 1.4° warmer than the 1900s. The biggest change is in January (+3.1°).
A bigger shift than in 55% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Deming compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Deming’s place among Washington’s.
Deming weather by month
Highs, lows and precipitation from NOAA’s grid at Deming’s center; snow, wet days and snow on the ground from Clearbrook, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 43° | 33° | 10.9" | 3.1" | 18 | 31° – 43° |
| February | 46° | 33° | 6.7" | 2.7" | 15 | 31° – 45° |
| March | 51° | 36° | 8.0" | 1.0" | 19 | 38° – 48° |
| April | 57° | 40° | 6.0" | 0.1" | 16 | 44° – 53° |
| May | 64° | 45° | 4.4" | 0.0" | 12 | 51° – 58° |
| June | 68° | 49° | 3.6" | 0.0" | 12 | 56° – 63° |
| July | 74° | 53° | 2.0" | 0.0" | 6 | 60° – 67° |
| August | 75° | 53° | 2.1" | 0.0" | 6 | 61° – 66° |
| September | 69° | 49° | 4.2" | 0.0" | 9 | 56° – 62° |
| October | 58° | 43° | 8.2" | 0.0" | 16 | 47° – 55° |
| November | 48° | 37° | 12.3" | 1.3" | 19 | 38° – 47° |
| December | 42° | 33° | 10.1" | 2.6" | 19 | 32° – 41° |
| Year | 58° | 42° | 78.4" | 10.8" | 168 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 31° to 45°. August is the most reliable, staying within 6°.
Where Deming’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Deming’s center.
- Snow: Clearbrook, WA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Clearbrook, WA, 10 miles from the town’s center, 140 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Deming’s climate
What is the weather like in Deming?
A typical July afternoon reaches 74°, a January night drops to 33°, and about 11 inches of snow falls in a normal winter. Milder January nights than 77% of U.S. towns; cooler July afternoons than all but 186 U.S. towns.
How cold does it get in Deming in winter?
January nights average 33°. About 57 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 31°.
How much snow does Deming get?
About 11 inches in a normal winter at Clearbrook, WA, most of it in January.
How hot does it get in Deming?
July, with a typical high of 74° and a low of 53°. About 2 days a year reach 90° (Clearbrook, WA).
When is the first and last frost in Deming?
In half of years the last spring frost (32°) comes by April 18 and the first fall frost by October 18, about 185 frost-free days, at Clearbrook, WA.
What growing zone is Deming in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 14°.
What is the best time of year to visit Deming?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Deming getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 55% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Deming.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.