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Will it freeze in Omak in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Sun, Nov 8: 31°F (Sun, Nov 8, 6:00 PM PST to Mon, Nov 9, 6:00 AM PST).
Tonight: forecast low 37°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 37°F Above 36°F · Mostly Cloudy then Patchy Fog
- Fri, Nov 6 36°F Frost possible · Slight Chance Light Rain
- Sat, Nov 7 38°F Above 36°F · Mostly Cloudy
- Sun, Nov 8 31°F Freeze · Partly Cloudy
- Mon, Nov 9 35°F Frost possible · Chance Light Rain
- Tue, Nov 10 39°F Above 36°F · Chance Light Rain
- Wed, Nov 11 40°F Above 36°F · 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 Omak
The median first fall hard-freeze date (28°F) is October 19, from NOAA’s 1991–2020 Climate Normals at Omak 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 | Apr 28 · May 13 · Jun 1 | Sep 12 · Sep 28 · Oct 11 | 136 days |
| 32°F freeze | Apr 14 · Apr 30 · May 15 | Sep 23 · Oct 7 · Oct 22 | 160 days |
| 28°F hard freeze | Mar 26 · Apr 14 · May 2 | Oct 3 · Oct 19 · Nov 4 | 188 days |
Average high temperature by month
1991–2020 normals at Omak 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 Omak, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Omak Airport (station USW00094197, elevation 1,296 ft), 2.7 mi from Omak. 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 Omak
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Colville, WA | 75 mi | May 2 | Oct 2 |
| Ephrata, WA | 76 mi | Apr 22 | Oct 17 |
| Wenatchee, WA | 78 mi | Apr 4 | Oct 28 |
| East Wenatchee, WA | 78 mi | Apr 4 | Oct 28 |
| Quincy, WA | 83 mi | Apr 21 | Oct 16 |
| Moses Lake, WA | 90 mi | Apr 27 | Oct 8 |
| Deer Park, WA | 101 mi | May 22 | Sep 14 |
| Airway Heights, WA | 105 mi | Apr 26 | Oct 12 |
| Ellensburg, WA | 109 mi | May 8 | Oct 2 |
| Spokane, WA | 110 mi | Apr 26 | Oct 15 |
Frequently asked questions
When is the last frost in Omak?
On average, the last spring frost (32°F) in Omak is around April 30. In about 1 year in 10 it comes after May 15, and in 9 years in 10 it comes after April 14.
When is the first frost in Omak?
The first fall frost (32°F) usually arrives around October 7. There’s a 10% chance of a freeze by September 23 and a 90% chance by October 22.
Can it frost in Omak 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 13.
What growing zone is Omak?
Omak is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 98840. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze