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Blyn, WA Weather
Blyn, Washington sits at 48.0095, -122.9802. Its warmest month is August, when the day usually reaches 71F, and its coldest is December, when the night usually falls to 31F. November is the wettest, with rain on about 17 days. The hottest day in the station record is 94F on July 11, 2007, and the coldest night -3F on February 4, 1989. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Blyn weather
Blyn sits at 48.0095, -122.9802 and covers about 4.783 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
- Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Warnings and alerts: the National Weather Service, passed through unchanged.
- Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
- Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
- Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Blyn
Blyn is warmest in August, when the day usually reaches 71F, and coldest in December, when the night usually falls to 31F. November is the wettest month, with rain on about 17 days of it.
The same year as numbers
| Month | Usual high | Usual low | Rain days | Snow days |
|---|---|---|---|---|
| January | 46F | 32F | 16 | 0 |
| February | 48F | 32F | 13 | 0 |
| March | 52F | 34F | 14 | 0 |
| April | 56F | 37F | 12 | 0 |
| May | 62F | 44F | 11 | 0 |
| June | 66F | 48F | 9 | 0 |
| July | 70F | 51F | 5 | 0 |
| August | 71F | 51F | 5 | 0 |
| September | 66F | 46F | 9 | 0 |
| October | 58F | 39F | 13 | 0 |
| November | 51F | 34F | 17 | 0 |
| December | 46F | 31F | 17 | 0 |
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Sequim 2 E station 6.5 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Blyn weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Blyn: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Blyn weather records
In 59,501 days of observations Blyn has been as hot as 94F and as cold as -3F. Not averages: the actual days.
NOAA GHCN daily station records, observed 1980 to 2026: temperature at the Sequim 2 E station, 6.5 miles away; snowfall at the Chimacum 2.9 S station, 9.8 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Blyn weather
What is the weather usually like in Blyn, WA?
Blyn is warmest in August, when the day usually reaches 71F, and coldest in December, when the night usually falls to 31F. Rain falls on roughly 141 days a year, most often in November. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Blyn, WA?
About 141 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. November is the wettest month with rain on about 17 of its days, and July the driest with about 5.
What is the hottest it has ever been in Blyn, WA?
The hottest day measured for Blyn reached 94F on July 11, 2007, and the coldest night -3F on February 4, 1989. Both are real NOAA station measurements from the GHCN daily archive, observed 1980 to 2026, at the Sequim 2 E station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Blyn, WA?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Blyn forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.