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Will it freeze in Susanville in the next 7 nights?
No overnight lows at or below 32°F are forecast in Susanville 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.
5 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 33°F Frost possible · Mostly Clear
- Fri, Nov 6 35°F Frost possible · Mostly Clear
- Sat, Nov 7 35°F Frost possible · Partly Cloudy
- Sun, Nov 8 35°F Frost possible · Mostly Cloudy
- Mon, Nov 9 35°F Frost possible · Partly Cloudy
- Tue, Nov 10 37°F Above 36°F · Partly Cloudy
- Wed, Nov 11 37°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 Susanville
The median first fall hard-freeze date (28°F) is October 21, from NOAA’s 1991–2020 Climate Normals at Susanville 2SW. 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 18 · Jun 4 · Jun 18 | Sep 12 · Sep 26 · Oct 8 | 114 days |
| 32°F freeze | Apr 29 · May 16 · Jun 5 | Sep 25 · Oct 8 · Oct 22 | 143 days |
| 28°F hard freeze | Apr 7 · Apr 26 · May 17 | Oct 5 · Oct 21 · Nov 3 | 176 days |
Average high temperature by month
1991–2020 normals at Susanville 2SW
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 Susanville, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Susanville 2SW (station USC00048702, elevation 4,212 ft), 2.2 mi from Susanville. 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 Susanville
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Paradise, CA | 70 mi | Feb 7 | Dec 18 |
| Reno, NV | 74 mi | Apr 28 | Oct 27 |
| Sparks, NV | 76 mi | May 1 | Oct 10 |
| Chico, CA | 78 mi | Mar 4 | Nov 17 |
| Truckee, CA | 78 mi | Jun 9 | Sep 25 |
| Oroville, CA | 81 mi | Jan 30 | Dec 13 |
| Grass Valley, CA | 87 mi | Apr 10 | Nov 13 |
| Red Bluff, CA | 87 mi | Feb 22 | Nov 29 |
| Anderson, CA | 88 mi | Mar 3 | Nov 21 |
| Corning, CA | 89 mi | Feb 25 | Dec 2 |
Frequently asked questions
When is the last frost in Susanville?
On average, the last spring frost (32°F) in Susanville is around May 16. In about 1 year in 10 it comes after June 5, and in 9 years in 10 it comes after April 29.
When is the first frost in Susanville?
The first fall frost (32°F) usually arrives around October 8. There’s a 10% chance of a freeze by September 25 and a 90% chance by October 22.
Can it frost in Susanville 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 June 4.
What growing zone is Susanville?
Susanville 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 96130. See growing zones in California.
More: all California frost dates · California growing zones · frost vs. freeze