Checking current alerts… View NWS forecast and alerts.
Will it freeze in Blaine in the next 7 nights?
No overnight lows at or below 32°F are forecast in Blaine during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 45°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 45°F Above 36°F · Light Rain
- Fri, Nov 6 47°F Above 36°F · Light Rain Likely
- Sat, Nov 7 48°F Above 36°F · Showers And Thunderstorms
- Sun, Nov 8 41°F Above 36°F · Slight Chance Light Rain then Partly Cloudy
- Mon, Nov 9 46°F Above 36°F · Light Rain
- Tue, Nov 10 49°F Above 36°F · Light Rain
- Wed, Nov 11 48°F Above 36°F · Light Rain Likely
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Blaine
The median first fall hard-freeze date (28°F) is November 19, from NOAA’s 1991–2020 Climate Normals at Blaine. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 1 · Apr 23 · May 12 | Oct 4 · Oct 20 · Nov 6 | 182 days |
| 32°F freeze | Mar 8 · Mar 31 · Apr 22 | Oct 18 · Nov 4 · Nov 24 | 219 days |
| 28°F hard freeze | Feb 2 · Mar 5 · Mar 31 | Oct 30 · Nov 19 · Dec 16 | 257 days |
Average high temperature by month
1991–2020 normals at Blaine
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Blaine, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Blaine (station USC00450729, elevation 60 ft), 2.1 mi from Blaine. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Blaine
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Ferndale, WA | 12 mi | Mar 31 | Oct 30 |
| Lynden, WA | 14 mi | Apr 18 | Oct 18 |
| Bellingham, WA | 21 mi | Apr 1 | Nov 2 |
| Anacortes, WA | 35 mi | Mar 8 | Nov 20 |
| Sedro-Woolley, WA | 40 mi | Mar 27 | Nov 6 |
| Burlington, WA | 41 mi | Mar 24 | Nov 3 |
| Mount Vernon, WA | 44 mi | Mar 24 | Nov 3 |
| Oak Harbor, WA | 48 mi | Mar 13 | Nov 14 |
| Stanwood, WA | 55 mi | Apr 22 | Oct 19 |
| Port Townsend, WA | 60 mi | Mar 1 | Nov 28 |
Frequently asked questions
When is the last frost in Blaine?
On average, the last spring frost (32°F) in Blaine is around March 31. In about 1 year in 10 it comes after April 22, and in 9 years in 10 it comes after March 8.
When is the first frost in Blaine?
The first fall frost (32°F) usually arrives around November 4. There’s a 10% chance of a freeze by October 18 and a 90% chance by November 24.
Can it frost in Blaine after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after April 23.
What growing zone is Blaine?
Blaine is in USDA Plant Hardiness Zone 8b (average annual extreme minimum temperature 15 to 20°F), based on the 2023 USDA map for ZIP code 98230. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze