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Will it freeze in Connell in the next 7 nights?
No overnight lows at or below 32°F are forecast in Connell during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 33°F. Frost possible.
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 33°F Frost possible · Patchy Fog
- Fri, Nov 6 38°F Above 36°F · Slight Chance Rain Showers
- Sat, Nov 7 39°F Above 36°F · Mostly Cloudy
- Sun, Nov 8 35°F Frost possible · Mostly Cloudy
- Mon, Nov 9 36°F Frost possible · Chance Rain Showers
- Tue, Nov 10 40°F Above 36°F · Chance Rain Showers
- Wed, Nov 11 40°F Above 36°F · Slight Chance Rain Showers then Mostly Cloudy
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 Connell
The median first fall hard-freeze date (28°F) is October 24, from NOAA’s 1991–2020 Climate Normals at Connell 1 W. 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 30 · May 13 · May 31 | Sep 15 · Oct 1 · Oct 14 | 139 days |
| 32°F freeze | Apr 12 · Apr 30 · May 15 | Sep 29 · Oct 12 · Oct 26 | 165 days |
| 28°F hard freeze | Mar 20 · Apr 10 · May 1 | Oct 8 · Oct 24 · Nov 10 | 197 days |
Average high temperature by month
1991–2020 normals at Connell 1 W
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 Connell, WA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Connell 1 W (station USC00451690, elevation 1,020 ft), 2.1 mi from Connell. 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 Connell
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Othello, WA | 19 mi | Apr 30 | Oct 12 |
| Pasco, WA | 30 mi | Apr 27 | Oct 11 |
| Richland, WA | 34 mi | Apr 6 | Oct 24 |
| West Richland, WA | 35 mi | Apr 6 | Oct 24 |
| Kennewick, WA | 36 mi | Mar 28 | Oct 30 |
| Moses Lake, WA | 39 mi | Apr 27 | Oct 8 |
| Walla Walla, WA | 47 mi | Mar 27 | Oct 31 |
| College Place, WA | 48 mi | May 2 | Oct 1 |
| Prosser, WA | 54 mi | Apr 14 | Oct 22 |
| Milton-Freewater, OR | 55 mi | Mar 25 | Oct 29 |
Frequently asked questions
When is the last frost in Connell?
On average, the last spring frost (32°F) in Connell 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 12.
When is the first frost in Connell?
The first fall frost (32°F) usually arrives around October 12. There’s a 10% chance of a freeze by September 29 and a 90% chance by October 26.
Can it frost in Connell 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 Connell?
Connell 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 99326. See growing zones in Washington.
More: all Washington frost dates · Washington growing zones · frost vs. freeze