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Will it freeze in Deer Park in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 31°F (Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST).
Tonight: forecast low 31°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
4 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 31°F Freeze · Patchy Fog
- Fri, Nov 6 34°F Frost possible · Slight Chance Light Rain
- Sat, Nov 7 37°F Above 36°F · Mostly Cloudy
- Sun, Nov 8 31°F Freeze · Mostly Cloudy
- Mon, Nov 9 34°F Frost possible · Chance Light Rain
- Tue, Nov 10 38°F Above 36°F · Chance Light Rain
- Wed, Nov 11 38°F Above 36°F · Slight Chance Light Rain
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 Deer Park
The median first fall hard-freeze date (28°F) is September 29, from NOAA’s 1991–2020 Climate Normals at Deer Park Airport. 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 | rare in most years | rare in most years | 72 days |
| 32°F freeze | May 2 · May 22 · Jun 15 | Aug 28 · Sep 14 · Oct 1 | 112 days |
| 28°F hard freeze | Apr 18 · May 3 · May 21 | Sep 14 · Sep 29 · Oct 14 | 146 days |
Average high temperature by month
1991–2020 normals at Deer Park Airport
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 Deer Park, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Deer Park Airport (station USW00094119, elevation 2,191 ft), 0.9 mi from Deer Park. 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 Deer Park
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Spokane, WA | 21 mi | Apr 26 | Oct 15 |
| Spokane Valley, WA | 23 mi | Apr 26 | Oct 15 |
| Airway Heights, WA | 23 mi | Apr 26 | Oct 12 |
| Liberty Lake, WA | 25 mi | Apr 26 | Oct 15 |
| Rathdrum, ID | 28 mi | Apr 22 | Oct 18 |
| Post Falls, ID | 29 mi | Apr 22 | Oct 18 |
| Hayden, ID | 32 mi | Apr 22 | Oct 18 |
| Cheney, WA | 34 mi | May 30 | Sep 4 |
| Coeur d'Alene, ID | 35 mi | Apr 22 | Oct 18 |
| Colville, WA | 45 mi | May 2 | Oct 2 |
Frequently asked questions
When is the last frost in Deer Park?
On average, the last spring frost (32°F) in Deer Park is around May 22. In about 1 year in 10 it comes after June 15, and in 9 years in 10 it comes after May 2.
When is the first frost in Deer Park?
The first fall frost (32°F) usually arrives around September 14. There’s a 10% chance of a freeze by August 28 and a 90% chance by October 1.
What growing zone is Deer Park?
Deer Park is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 99006. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze