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Will it freeze in Shasta Lake in the next 7 nights?
No overnight lows at or below 32°F are forecast in Shasta Lake during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 50°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 50°F Above 36°F · Mostly Clear
- Fri, Nov 6 51°F Above 36°F · Mostly Clear
- Sat, Nov 7 50°F Above 36°F · Mostly Clear
- Sun, Nov 8 50°F Above 36°F · Partly Cloudy
- Mon, Nov 9 50°F Above 36°F · Mostly Clear
- Tue, Nov 10 51°F Above 36°F · Slight Chance Light Rain
- Wed, Nov 11 50°F Above 36°F · 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 Shasta Lake
Most years have no 28°F hard freeze at Shasta Dam, according to NOAA’s 1991–2020 Climate Normals. Check the short-term forecast above during cold snaps.
| 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 6 · Mar 19 · Apr 16 | Nov 16 · Dec 6 · Dec 30 | 263 days |
| 32°F freeze | Dec 26 · Feb 8 · Mar 28 | Dec 1 · Dec 28 · Feb 18 | 322 days |
| 28°F hard freeze | Dec 14 · Jan 18 · Mar 14 | Dec 10 · Jan 4 · Mar 10 | 365 days |
Average high temperature by month
1991–2020 normals at Shasta Dam
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 Shasta Lake, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Shasta Dam (station USC00048135, elevation 1,075 ft), 3.2 mi from Shasta Lake. 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 Shasta Lake
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Redding, CA | 7.5 mi | Mar 3 | Nov 21 |
| Anderson, CA | 16 mi | Mar 3 | Nov 21 |
| Red Bluff, CA | 35 mi | Feb 22 | Nov 29 |
| Corning, CA | 53 mi | Feb 25 | Dec 2 |
| Orland, CA | 65 mi | Feb 25 | Dec 2 |
| Chico, CA | 70 mi | Mar 4 | Nov 17 |
| Yreka, CA | 73 mi | Apr 30 | Oct 18 |
| Paradise, CA | 76 mi | Feb 7 | Dec 18 |
| Willows, CA | 81 mi | Feb 21 | Dec 6 |
| Arcata, CA | 89 mi | Feb 22 | Dec 7 |
Frequently asked questions
When is the last frost in Shasta Lake?
On average, the last spring frost (32°F) in Shasta Lake is around February 8. In about 1 year in 10 it comes after March 28, and in 9 years in 10 it comes after December 26.
When is the first frost in Shasta Lake?
The first fall frost (32°F) usually arrives around December 28. There’s a 10% chance of a freeze by December 1 and a 90% chance by February 18.
Can it frost in Shasta Lake 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 19.
What growing zone is Shasta Lake?
Shasta Lake 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 96019. See growing zones in California.
More: all California frost dates · California growing zones · frost vs. freeze