Deep River Pioneer Lutheran Church · Photo: Ian Poellet (User:Werewombat) · CC BY-SA 3.0Few U.S. towns get more rain and snow than Deep River: 90 inches a year
Expect July afternoons of about 71°. Summers stay cool: July afternoons here are cooler than in almost every U.S. town. Warming shows here too: 1.1° more than in 1901–2000, led by January. For walks and days out, the stretch from May to September brings highs of 63–72°.
A year in Deep River at a glance
Each month’s typical high and low, and what it brings.
What stands out about Deep River’s climate
Compared with towns across the U.S., with Deep River’s place in Washington beside it.
What a year in Deep River feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 179 frost-free days a year
In half of years the last 32° night comes by April 24 and the first by October 20. Frost and day counts come from NOAA’s station at Naselle 2 Ene, WA, 2.7 miles from the town’s center, 140 ft lower.
The 2023 USDA map puts Deep River’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 18°. 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 2 inches of snow a winter
Snow, measured at Naselle 2 Ene, WA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 90 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 201 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Deep River
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 Naselle 2 Ene, WA.
Living with Deep River’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
179 frost-free days in zone 8b. The last frost comes by Apr 24 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 20.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 7.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Deep River from natural hazards, tsunamis are the largest share (34%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Deep River and its neighbors
Grays River the hottest July afternoons (74°, 3° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Deep River’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 |
|---|---|---|---|---|
| Deep River, WA | 36° | 71° | 90" | 1.7" |
| Brookings, OR | 42° | 69° | 73" | 0.0" |
| Crescent City, CA | 42° | 64° | 69" | 0.0" |
| Brevard, NC | 27° | 83° | 69" | 7.1" |
| Kodiak, AK | 26° | 62° | 78" | 70" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Deep River averaged 1.1° warmer than the 1900s. The biggest change is in January (+2.4°).
A smaller shift than in 67% 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 Deep River compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Deep River’s place among Washington’s.
Deep River weather by month
Highs, lows and precipitation from NOAA’s grid at Deep River’s center; snow, wet days and snow on the ground from Naselle 2 Ene, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 49° | 36° | 13.9" | 1.0" | 22 | 1 | 37° – 47° |
| February | 51° | 35° | 9.0" | 0.3" | 19 | 0 | 37° – 48° |
| March | 54° | 36° | 10.1" | 0.1" | 22 | 0 | 41° – 49° |
| April | 58° | 39° | 7.2" | 0.0" | 20 | 0 | 44° – 53° |
| May | 63° | 44° | 4.1" | 0.0" | 16 | 0 | 50° – 56° |
| June | 67° | 48° | 3.0" | 0.0" | 14 | 0 | 55° – 60° |
| July | 71° | 51° | 1.0" | 0.0" | 8 | 0 | 58° – 65° |
| August | 72° | 51° | 1.5" | 0.0" | 7 | 0 | 59° – 64° |
| September | 70° | 47° | 3.5" | 0.0" | 11 | 0 | 55° – 62° |
| October | 61° | 42° | 8.6" | 0.0" | 17 | 0 | 49° – 57° |
| November | 53° | 38° | 13.7" | 0.0" | 22 | 0 | 41° – 50° |
| December | 48° | 35° | 14.0" | 0.3" | 23 | 0 | 37° – 45° |
| Year | 60° | 42° | 89.7" | 1.7" | 201 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 37° to 48°. August is the most reliable, staying within 5°.
Where Deep River’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 Deep River’s center.
- Snow: Naselle 2 Ene, WA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Naselle 2 Ene, WA, 2.7 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 Deep River’s climate
What is the weather like in Deep River?
A typical July afternoon reaches 71°, a January night drops to 36°, and about 2 inches of snow falls in a normal winter. Milder January nights than 82% of U.S. towns; cooler July afternoons than all but 96 U.S. towns.
How cold does it get in Deep River in winter?
February nights average 35°. About 76 nights a year reach 32° or below. In the coldest February of the last 30 years the month averaged 37°.
How much snow does Deep River get?
About 1.7 inches in a normal winter at Naselle 2 Ene, WA, most of it in January, with snow on the ground about 1 days a year.
How hot does it get in Deep River?
July, with a typical high of 71° and a low of 51°. About 5 days a year reach 90° (Naselle 2 Ene, WA).
When is the first and last frost in Deep River?
In half of years the last spring frost (32°) comes by April 24 and the first fall frost by October 20, about 179 frost-free days, at Naselle 2 Ene, WA.
What growing zone is Deep River in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 18°.
What is the best time of year to visit Deep River?
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 Deep River getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 67% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Deep River.
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.