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Will it freeze in Snohomish in the next 7 nights?
No overnight lows at or below 32°F are forecast in Snohomish during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 44°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
1 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 44°F Above 36°F · Mostly Cloudy then Chance Light Rain
- Fri, Nov 6 49°F Above 36°F · Light Rain
- Sat, Nov 7 47°F Above 36°F · Light Rain
- Sun, Nov 8 36°F Frost possible · Slight Chance Light Rain then Mostly Cloudy
- Mon, Nov 9 46°F Above 36°F · Light Rain
- Tue, Nov 10 48°F Above 36°F · Light Rain Likely
- Wed, Nov 11 46°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 Snohomish
The median first fall hard-freeze date (28°F) is November 21, from NOAA’s 1991–2020 Climate Normals at Everett. 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 | Mar 31 · Apr 20 · May 8 | Oct 1 · Oct 18 · Nov 4 | 183 days |
| 32°F freeze | Mar 4 · Mar 24 · Apr 11 | Oct 16 · Nov 2 · Nov 23 | 223 days |
| 28°F hard freeze | Jan 31 · Mar 1 · Mar 20 | Oct 29 · Nov 21 · Dec 14 | 265 days |
Average high temperature by month
1991–2020 normals at Everett
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 Snohomish, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Everett (station USC00452675, elevation 60 ft), 5.7 mi from Snohomish. 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 Snohomish
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Lake Stevens, WA | 5.0 mi | Mar 24 | Nov 2 |
| Everett, WA | 5.0 mi | Mar 24 | Nov 2 |
| Monroe, WA | 6.8 mi | Apr 17 | Oct 23 |
| Mill Creek, WA | 6.8 mi | Mar 9 | Nov 17 |
| Mukilteo, WA | 9.9 mi | Mar 9 | Nov 17 |
| Marysville, WA | 11 mi | Mar 24 | Nov 2 |
| Lynnwood, WA | 12 mi | Mar 9 | Nov 17 |
| Bothell, WA | 12 mi | Mar 8 | Nov 23 |
| Woodinville, WA | 12 mi | Mar 8 | Nov 23 |
| Brier, WA | 12 mi | Mar 8 | Nov 23 |
Frequently asked questions
When is the last frost in Snohomish?
On average, the last spring frost (32°F) in Snohomish is around March 24. In about 1 year in 10 it comes after April 11, and in 9 years in 10 it comes after March 4.
When is the first frost in Snohomish?
The first fall frost (32°F) usually arrives around November 2. There’s a 10% chance of a freeze by October 16 and a 90% chance by November 23.
Can it frost in Snohomish 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 20.
What growing zone is Snohomish?
Snohomish 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 98208. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze