Checking current alerts… View NWS forecast and alerts.
Will it freeze in Liberty Lake in the next 7 nights?
No overnight lows at or below 32°F are forecast in Liberty Lake during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 36°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 36°F Frost possible · Patchy Fog
- Fri, Nov 6 39°F Above 36°F · Slight Chance Light Rain
- Sat, Nov 7 42°F Above 36°F · Mostly Cloudy then Slight Chance Light Rain
- Sun, Nov 8 35°F Frost possible · Mostly Cloudy
- Mon, Nov 9 39°F Above 36°F · Chance Light Rain
- Tue, Nov 10 42°F Above 36°F · Chance Light Rain
- Wed, Nov 11 42°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 Liberty Lake
The median first fall hard-freeze date (28°F) is October 27, from NOAA’s 1991–2020 Climate Normals at Spokane Felts Field. 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 27 · May 9 · May 25 | Sep 19 · Oct 1 · Oct 15 | 143 days |
| 32°F freeze | Apr 10 · Apr 26 · May 10 | Sep 30 · Oct 15 · Oct 31 | 170 days |
| 28°F hard freeze | Mar 16 · Apr 4 · Apr 26 | Oct 11 · Oct 27 · Nov 13 | 205 days |
Average high temperature by month
1991–2020 normals at Spokane Felts Field
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 Liberty Lake, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Spokane Felts Field (station USW00094176, elevation 1,953 ft), 10 mi from Liberty Lake. 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 Liberty Lake
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Spokane Valley, WA | 6.2 mi | Apr 26 | Oct 15 |
| Post Falls, ID | 8.7 mi | Apr 22 | Oct 18 |
| Rathdrum, ID | 13 mi | Apr 22 | Oct 18 |
| Coeur d'Alene, ID | 14 mi | Apr 22 | Oct 18 |
| Spokane, WA | 16 mi | Apr 26 | Oct 15 |
| Hayden, ID | 16 mi | Apr 22 | Oct 18 |
| Airway Heights, WA | 22 mi | Apr 26 | Oct 12 |
| Cheney, WA | 25 mi | May 30 | Sep 4 |
| Deer Park, WA | 25 mi | May 22 | Sep 14 |
| Sandpoint, ID | 49 mi | May 8 | Sep 28 |
Frequently asked questions
When is the last frost in Liberty Lake?
On average, the last spring frost (32°F) in Liberty Lake is around April 26. In about 1 year in 10 it comes after May 10, and in 9 years in 10 it comes after April 10.
When is the first frost in Liberty Lake?
The first fall frost (32°F) usually arrives around October 15. There’s a 10% chance of a freeze by September 30 and a 90% chance by October 31.
Can it frost in Liberty Lake 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 9.
What growing zone is Liberty Lake?
Liberty Lake 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 99019. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze