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Will it freeze in Gridley in the next 7 nights?
No overnight lows at or below 32°F are forecast in Gridley during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 42°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 42°F Above 36°F · Mostly Clear
- Fri, Nov 6 43°F Above 36°F · Clear
- Sat, Nov 7 45°F Above 36°F · Mostly Clear
- Sun, Nov 8 45°F Above 36°F · Partly Cloudy
- Mon, Nov 9 45°F Above 36°F · Mostly Clear
- Tue, Nov 10 46°F Above 36°F · Partly Cloudy then Slight Chance Light Rain
- Wed, Nov 11 46°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 Gridley
The median first fall hard-freeze date (28°F) is December 27, from NOAA’s 1991–2020 Climate Normals at Oroville Municipal 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 | Feb 4 · Mar 6 · Apr 1 | Nov 7 · Nov 24 · Dec 10 | 261 days |
| 32°F freeze | Dec 28 · Jan 29 · Feb 28 | Nov 20 · Dec 7 · Jan 6 | 317 days |
| 28°F hard freeze | Dec 16 · Jan 9 · Feb 6 | Dec 2 · Dec 27 · Jan 26 | 360 days |
Average high temperature by month
1991–2020 normals at Oroville Municipal 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 Gridley, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Oroville Municipal Airport (station USW00093210, elevation 190 ft), 9.8 mi from Gridley. 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 Gridley
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Live Oak, CA | 6.2 mi | Jan 15 | Dec 12 |
| Oroville, CA | 12 mi | Jan 30 | Dec 13 |
| Marysville, CA | 16 mi | Jan 15 | Dec 12 |
| Yuba City, CA | 16 mi | Jan 15 | Dec 12 |
| Colusa, CA | 20 mi | Feb 14 | Dec 1 |
| Paradise, CA | 27 mi | Feb 7 | Dec 18 |
| Williams, CA | 28 mi | Feb 14 | Dec 1 |
| Chico, CA | 28 mi | Mar 4 | Nov 17 |
| Willows, CA | 29 mi | Feb 21 | Dec 6 |
| Grass Valley, CA | 36 mi | Apr 10 | Nov 13 |
Frequently asked questions
When is the last frost in Gridley?
On average, the last spring frost (32°F) in Gridley is around January 29. In about 1 year in 10 it comes after February 28, and in 9 years in 10 it comes after December 28.
When is the first frost in Gridley?
The first fall frost (32°F) usually arrives around December 7. There’s a 10% chance of a freeze by November 20 and a 90% chance by January 6.
Can it frost in Gridley 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 March 6.
What growing zone is Gridley?
Gridley 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 95948. See growing zones in California.
More: all California frost dates · California growing zones · frost vs. freeze