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Will it freeze in Ione in the next 7 nights?
No overnight lows at or below 32°F are forecast in Ione during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 47°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 47°F Above 36°F · Mostly Clear
- Fri, Nov 6 49°F Above 36°F · Mostly Clear
- Sat, Nov 7 49°F Above 36°F · Mostly Clear
- Sun, Nov 8 50°F Above 36°F · Mostly Clear
- Mon, Nov 9 49°F Above 36°F · Mostly Clear
- Tue, Nov 10 51°F Above 36°F · Mostly Clear then Slight Chance Light Rain
- Wed, Nov 11 52°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 Ione
The median first fall hard-freeze date (28°F) is December 27, from NOAA’s 1991–2020 Climate Normals at Sutter Hill Cdf. 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 | Mar 9 · Apr 10 · May 4 | Nov 1 · Nov 25 · Dec 12 | 228 days |
| 32°F freeze | Jan 6 · Mar 4 · Apr 8 | Nov 19 · Dec 11 · Jan 4 | 285 days |
| 28°F hard freeze | Dec 14 · Jan 10 · Mar 2 | Dec 2 · Dec 27 · Jan 26 | 357 days |
Average high temperature by month
1991–2020 normals at Sutter Hill Cdf
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 Ione, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Sutter Hill Cdf (station USC00048713, elevation 1,586 ft), 8.0 mi from Ione. 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 Ione
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Jackson, CA | 9.3 mi | Mar 4 | Dec 11 |
| Galt, CA | 20 mi | Feb 9 | Dec 5 |
| Rancho Cordova, CA | 22 mi | Jan 12 | Dec 16 |
| Folsom, CA | 24 mi | Jan 12 | Dec 16 |
| Elk Grove, CA | 24 mi | Feb 2 | Dec 2 |
| Lodi, CA | 25 mi | Feb 9 | Dec 5 |
| Placerville, CA | 27 mi | Mar 31 | Nov 21 |
| Citrus Heights, CA | 29 mi | Jan 12 | Dec 16 |
| Sacramento, CA | 32 mi | Jan 12 | Dec 16 |
| Stockton, CA | 33 mi | Feb 5 | Dec 8 |
Frequently asked questions
When is the last frost in Ione?
On average, the last spring frost (32°F) in Ione is around March 4. In about 1 year in 10 it comes after April 8, and in 9 years in 10 it comes after January 6.
When is the first frost in Ione?
The first fall frost (32°F) usually arrives around December 11. There’s a 10% chance of a freeze by November 19 and a 90% chance by January 4.
Can it frost in Ione 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 April 10.
What growing zone is Ione?
Ione is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 95640. See growing zones in California.
More: all California frost dates · California growing zones · frost vs. freeze