Photo: Callworth360 · CC BY-SA 3.0Hardly any U.S. towns collect more precipitation than Yacolt: 78 inches a year
Midwinter brings lows of about 35°. Temperatures cover 46° across the year, low to high. In July, afternoons here are cooler than in 95% of U.S. towns. Central heating does most of its work from November to April, in months below 50° on average.
A year in Yacolt at a glance
Each month’s typical high and low, and what it brings.
What stands out about Yacolt’s climate
Compared with towns across the U.S., with Yacolt’s place in Washington beside it.
What a year in Yacolt feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 174 frost-free days a year
In half of years the last 32° night comes by April 26 and the first by October 16. Frost and day counts come from NOAA’s station at Battle Ground, WA, 9 miles from the town’s center, 430 ft lower.
The 2023 USDA map puts Yacolt’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 16°. 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 3 inches of snow a winter
Snow, measured at Merwin Dam, WA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 78 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 176 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Yacolt
97% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Battle Ground, WA.
Living with Yacolt’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
174 frost-free days in zone 8b. The last frost comes by Apr 26 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 16.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 0.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Yacolt from natural hazards, river flooding is the largest share (73%); heat waves, cold waves, winter storms and ice storms together are 13%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Yacolt and similar climates
TownRatings has no climate map of the towns around Yacolt yet.
Climates most like Yacolt’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 |
|---|---|---|---|---|
| Yacolt, WA | 35° | 79° | 78" | 3.0" |
| Brevard, NC | 27° | 83° | 69" | 7.1" |
| Signal Mountain, TN | 29° | 85° | 62" | 4.3" |
| Fort Payne, AL | 31° | 86° | 60" | 5.0" |
| Dahlonega, GA | 30° | 87° | 63" | 3.3" |
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 Yacolt averaged 1.3° warmer than the 1900s. The biggest change is in January (+3.2°).
A smaller shift than in 56% 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 Yacolt compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Yacolt’s place among Washington’s.
Yacolt weather by month
Highs, lows and precipitation from NOAA’s grid at Yacolt’s center; snow, wet days and snow on the ground from Merwin Dam, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 45° | 35° | 11.1" | 1.6" | 21 | 1 | 33° – 44° |
| February | 49° | 34° | 8.4" | 0.9" | 18 | 1 | 35° – 48° |
| March | 54° | 37° | 8.2" | 0.2" | 20 | 0 | 41° – 51° |
| April | 59° | 39° | 6.6" | 0.0" | 19 | 0 | 45° – 54° |
| May | 67° | 45° | 4.3" | 0.0" | 14 | 0 | 51° – 60° |
| June | 71° | 49° | 3.2" | 0.0" | 11 | 0 | 56° – 67° |
| July | 79° | 53° | 0.9" | 0.0" | 4 | 0 | 59° – 70° |
| August | 80° | 53° | 1.1" | 0.0" | 4 | 0 | 62° – 70° |
| September | 74° | 49° | 2.9" | 0.0" | 9 | 0 | 58° – 64° |
| October | 61° | 43° | 7.3" | 0.0" | 15 | 0 | 48° – 56° |
| November | 50° | 38° | 11.6" | 0.0" | 20 | 0 | 39° – 49° |
| December | 44° | 34° | 12.1" | 0.3" | 21 | 0 | 34° – 42° |
| Year | 61° | 42° | 77.6" | 3.0" | 176 | 2 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 35° to 48°. September is the most reliable, staying within 6°.
Where Yacolt’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 Yacolt’s center.
- Snow: Merwin Dam, WA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Battle Ground, WA, 9 miles from the town’s center, 430 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 Yacolt’s climate
What is the weather like in Yacolt?
A typical July afternoon reaches 79°, a January night drops to 35°, and about 3 inches of snow falls in a normal winter. Milder January nights than 79% of U.S. towns; cooler July afternoons than 95% of U.S. towns.
How cold does it get in Yacolt in winter?
December nights average 34°. About 70 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 34°.
How much snow does Yacolt get?
About 3.0 inches in a normal winter at Merwin Dam, WA, most of it in January, with snow on the ground about 2 days a year.
How hot does it get in Yacolt?
July, with a typical high of 79° and a low of 53°. About 11 days a year reach 90° (Battle Ground, WA).
When is the first and last frost in Yacolt?
In half of years the last spring frost (32°) comes by April 26 and the first fall frost by October 16, about 174 frost-free days, at Battle Ground, WA.
What growing zone is Yacolt in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 16°.
What is the best time of year to visit Yacolt?
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 Yacolt getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 56% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Yacolt.
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.