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Will it freeze in Klamath Falls in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 28°F (Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST).
Tonight: forecast low 28°F. Hard freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
7 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 28°F Hard freeze · Mostly Clear
- Fri, Nov 6 32°F Freeze · Mostly Clear
- Sat, Nov 7 33°F Frost possible · Partly Cloudy
- Sun, Nov 8 32°F Freeze · Mostly Cloudy
- Mon, Nov 9 32°F Freeze · Partly Cloudy
- Tue, Nov 10 34°F Frost possible · Partly Cloudy then Slight Chance Light Rain
- Wed, Nov 11 34°F Frost possible · 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 Klamath Falls
The median first fall hard-freeze date (28°F) is October 2, from NOAA’s 1991–2020 Climate Normals at Klamath Falls Intl 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 22 · Jun 9 · Jun 26 | Sep 4 · Sep 18 · Oct 1 | 99 days |
| 28°F hard freeze | May 2 · May 21 · Jun 12 | Sep 17 · Oct 2 · Oct 17 | 132 days |
Average high temperature by month
1991–2020 normals at Klamath Falls Intl 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 Klamath Falls, OR come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Klamath Falls Intl Airport (station USW00094236, elevation 4,084 ft), 5.7 mi from Klamath Falls. 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 Klamath Falls
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Ashland, OR | 47 mi | May 6 | Oct 8 |
| Talent, OR | 52 mi | May 6 | Oct 8 |
| Eagle Point, OR | 55 mi | Apr 8 | Oct 29 |
| Medford, OR | 55 mi | Apr 8 | Oct 29 |
| Yreka, CA | 55 mi | Apr 30 | Oct 18 |
| Central Point, OR | 59 mi | Apr 8 | Oct 29 |
| Grants Pass, OR | 81 mi | Apr 8 | Oct 28 |
| Winston, OR | 104 mi | Mar 23 | Nov 18 |
| Roseburg, OR | 106 mi | Mar 23 | Nov 18 |
| Shasta Lake, CA | 111 mi | Feb 8 | Dec 28 |
Frequently asked questions
When is the last frost in Klamath Falls?
On average, the last spring frost (32°F) in Klamath Falls is around June 9. In about 1 year in 10 it comes after June 26, and in 9 years in 10 it comes after May 22.
When is the first frost in Klamath Falls?
The first fall frost (32°F) usually arrives around September 18. There’s a 10% chance of a freeze by September 4 and a 90% chance by October 1.
What growing zone is Klamath Falls?
Klamath Falls 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 97634. See growing zones in Oregon.
More: all Oregon frost dates · Oregon growing zones · frost vs. freeze