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Will it freeze in Chehalis in the next 7 nights?
No overnight lows at or below 32°F are forecast in Chehalis during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 42°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 42°F Above 36°F · Mostly Cloudy then Chance Light Rain
- Fri, Nov 6 48°F Above 36°F · Light Rain
- Sat, Nov 7 48°F Above 36°F · Light Rain
- Sun, Nov 8 38°F Above 36°F · Partly Cloudy
- Mon, Nov 9 47°F Above 36°F · Light Rain Likely
- Tue, Nov 10 50°F Above 36°F · Light Rain Likely
- Wed, Nov 11 47°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 Chehalis
The median first fall hard-freeze date (28°F) is November 13, from NOAA’s 1991–2020 Climate Normals at Centralia. 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 24 · May 7 · May 24 | Sep 22 · Oct 8 · Oct 26 | 154 days |
| 32°F freeze | Mar 30 · Apr 22 · May 10 | Oct 7 · Oct 27 · Nov 17 | 188 days |
| 28°F hard freeze | Feb 24 · Mar 23 · Apr 17 | Oct 21 · Nov 13 · Dec 7 | 234 days |
Average high temperature by month
1991–2020 normals at Centralia
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 Chehalis, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Centralia (station USC00451276, elevation 185 ft), 3.9 mi from Chehalis. 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 Chehalis
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Centralia, WA | 3.7 mi | Apr 22 | Oct 27 |
| Tumwater, WA | 22 mi | Apr 29 | Oct 14 |
| Yelm, WA | 24 mi | Apr 29 | Oct 14 |
| Olympia, WA | 26 mi | Apr 29 | Oct 14 |
| Lacey, WA | 27 mi | Apr 29 | Oct 14 |
| DuPont, WA | 34 mi | Mar 11 | Nov 21 |
| Longview, WA | 36 mi | Apr 8 | Nov 5 |
| Kelso, WA | 38 mi | Apr 8 | Nov 5 |
| Steilacoom, WA | 39 mi | Mar 11 | Nov 21 |
| Shelton, WA | 39 mi | Apr 27 | Oct 16 |
Frequently asked questions
When is the last frost in Chehalis?
On average, the last spring frost (32°F) in Chehalis is around April 22. In about 1 year in 10 it comes after May 10, and in 9 years in 10 it comes after March 30.
When is the first frost in Chehalis?
The first fall frost (32°F) usually arrives around October 27. There’s a 10% chance of a freeze by October 7 and a 90% chance by November 17.
Can it frost in Chehalis 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 May 7.
What growing zone is Chehalis?
Chehalis is in USDA Plant Hardiness Zone 8a (average annual extreme minimum temperature 10 to 15°F), based on the 2023 USDA map for ZIP code 98532. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze