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Will it freeze in College Place in the next 7 nights?
No overnight lows at or below 32°F are forecast in College Place during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 34°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 34°F Frost possible · Mostly Clear
- Fri, Nov 6 41°F Above 36°F · Mostly Cloudy
- Sat, Nov 7 45°F Above 36°F · Mostly Cloudy then Chance Rain Showers
- Sun, Nov 8 36°F Frost possible · Mostly Cloudy
- Mon, Nov 9 39°F Above 36°F · Chance Rain Showers
- Tue, Nov 10 43°F Above 36°F · Chance Rain Showers
- Wed, Nov 11 44°F Above 36°F · Slight Chance Rain Showers
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 College Place
The median first fall hard-freeze date (28°F) is October 12, from NOAA’s 1991–2020 Climate Normals at Whitman Mission. 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 | May 3 · May 18 · Jun 7 | Sep 1 · Sep 17 · Oct 2 | 121 days |
| 32°F freeze | Apr 16 · May 2 · May 18 | Sep 14 · Oct 1 · Oct 16 | 151 days |
| 28°F hard freeze | Mar 23 · Apr 15 · May 1 | Sep 28 · Oct 12 · Oct 30 | 181 days |
Average high temperature by month
1991–2020 normals at Whitman Mission
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 College Place, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Whitman Mission (station USC00459200, elevation 632 ft), 3.4 mi from College Place. 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 College Place
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Walla Walla, WA | 3.1 mi | Mar 27 | Oct 31 |
| Milton-Freewater, OR | 7.5 mi | Mar 25 | Oct 29 |
| Pendleton, OR | 32 mi | Apr 22 | Oct 9 |
| Pasco, WA | 38 mi | Apr 27 | Oct 11 |
| Kennewick, WA | 39 mi | Mar 28 | Oct 30 |
| Hermiston, OR | 45 mi | Apr 26 | Oct 10 |
| Umatilla, OR | 46 mi | Mar 30 | Nov 4 |
| Richland, WA | 47 mi | Apr 6 | Oct 24 |
| Connell, WA | 48 mi | Apr 30 | Oct 12 |
| West Richland, WA | 51 mi | Apr 6 | Oct 24 |
Frequently asked questions
When is the last frost in College Place?
On average, the last spring frost (32°F) in College Place is around May 2. In about 1 year in 10 it comes after May 18, and in 9 years in 10 it comes after April 16.
When is the first frost in College Place?
The first fall frost (32°F) usually arrives around October 1. There’s a 10% chance of a freeze by September 14 and a 90% chance by October 16.
Can it frost in College Place 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 18.
What growing zone is College Place?
College Place 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 99324. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze