Uncas School · Photo: Ian Poellet · CC BY-SA 3.0Blyn sits near the bottom of U.S. towns for July heat
In January the night’s low is typically 35°. It is a dry place: less rain and snow fall here than on 88% of U.S. towns. Warming shows here too: 1.2° more than in 1901–2000, led by January. Long walks are most pleasant from May to September, when afternoons reach 63–73°.
A year in Blyn at a glance
Each month’s typical high and low, and what it brings.
What stands out about Blyn’s climate
Compared with towns across the U.S., with Blyn’s place in Washington beside it.
What a year in Blyn feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 181 frost-free days a year
In half of years the last 32° night comes by April 21 and the first by October 20. Frost and day counts come from Sequim 2 E, WA, 7 miles away.
The 2023 USDA map puts Blyn’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°
About 1 inches of snow a winter
Snow, measured at Sequim 2 E, WA, falls mostly in December. Precipitation (rain plus melted snow) adds up to 22 inches a year; November is the wettest month and July the driest. Rain or snow falls on about 141 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Blyn
Nearly all of the work is heating: a normal year has almost no cooling days. 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 Sequim 2 E, WA.
Living with Blyn’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
181 frost-free days in zone 8b. 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 20.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 2.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Blyn from natural hazards, earthquakes are the largest share (65%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Blyn and similar climates
TownRatings has no climate map of the towns around Blyn yet.
Climates most like Blyn’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 |
|---|---|---|---|---|
| Blyn, WA | 35° | 72° | 22" | 1.4" |
| Watsonville, CA | 41° | 73° | 22" | 0.0" |
| Makawao, HI | 53° | 75° | 23" | 0.0" |
| Hillsboro, OR | 35° | 81° | 38" | 5.2" |
| Nantucket, MA | 26° | 76° | 44" | 25" |
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 Blyn averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.6°).
A smaller shift than in 63% 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 Blyn compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Blyn’s place among Washington’s.
Blyn weather by month
Highs, lows and precipitation from NOAA’s grid at Blyn’s center; snow, wet days and snow on the ground from Sequim 2 E, WA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 46° | 35° | 2.7" | 0.0" | 16 | 0 | 34° – 44° |
| February | 48° | 35° | 1.9" | 0.0" | 14 | 0 | 34° – 47° |
| March | 52° | 36° | 2.2" | 0.0" | 15 | 0 | 40° – 49° |
| April | 57° | 39° | 1.6" | 0.0" | 12 | 0 | 43° – 53° |
| May | 63° | 45° | 1.4" | 0.0" | 11 | 0 | 50° – 57° |
| June | 67° | 48° | 1.2" | 0.0" | 9 | 0 | 54° – 62° |
| July | 72° | 52° | 0.6" | 0.0" | 5 | 0 | 58° – 65° |
| August | 73° | 52° | 0.6" | 0.0" | 5 | 0 | 59° – 65° |
| September | 68° | 49° | 1.0" | 0.0" | 9 | 0 | 56° – 62° |
| October | 58° | 43° | 2.1" | 0.0" | 13 | 0 | 48° – 55° |
| November | 50° | 37° | 3.5" | 0.0" | 17 | 0 | 40° – 48° |
| December | 45° | 34° | 3.3" | 1.4" | 17 | 0 | 35° – 42° |
| Year | 58° | 42° | 22.2" | 1.4" | 141 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 34° to 47°. September is the most reliable, staying within 7°.
Where Blyn’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 Blyn’s center.
- Snow: Sequim 2 E, WA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sequim 2 E, WA, 7 miles from the town’s center, 690 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- 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 Blyn’s climate
What is the weather like in Blyn?
A typical July afternoon reaches 72°, a January night drops to 35°, and about 1 inches of snow falls in a normal winter. Milder January nights than 80% of U.S. towns; cooler July afternoons than all but 109 U.S. towns.
How cold does it get in Blyn in winter?
December nights average 34°. About 89 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 35°.
How much snow does Blyn get?
About 1.4 inches in a normal winter at Sequim 2 E, WA, most of it in December, with snow on the ground about 0 days a year.
How hot does it get in Blyn?
July, with a typical high of 72°. 90° days are rare: none in a normal year at Sequim 2 E, WA.
When is the first and last frost in Blyn?
In half of years the last spring frost (32°) comes by April 21 and the first fall frost by October 20, about 181 frost-free days, at Sequim 2 E, WA.
What growing zone is Blyn 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 Blyn?
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 Blyn getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 63% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Blyn.
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.