Frost dates for 95689Volcano, CA
The average last spring frost in Volcano is April 12 and the average first fall frost is November 21, giving a typical growing season of about 221 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 12
- Average first fall frost
- Nov 21
- Growing season
- 221 days
Safer after May 10 (1-in-10 risk)
Possible by Oct 29 (1-in-10 risk)
First frost typically in 21 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Apr 11 · May 1 · May 27 | Oct 9 · Nov 3 · Nov 22 | 183 days | 100% |
| Frost / freeze (32°F) | Mar 13 · Apr 12 · May 10 | Oct 29 · Nov 21 · Dec 9 | 221 days | 100% |
| Hard freeze (28°F) | Jan 31 · Mar 13 · Apr 14 | Nov 18 · Dec 8 · Jan 6 | 269 days | 99% |
Planting calendar for Volcano
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Mar 12 – May 18 |
| Tomatoes | Transplant outdoors | Apr 28 – Aug 1 |
| Peppers | Start seeds indoors | Mar 12 – Apr 12 |
| Peppers | Transplant outdoors | May 12 – Jun 12 |
| Eggplant | Start seeds indoors | Mar 29 – Apr 27 |
| Eggplant | Transplant outdoors | May 12 – Jun 12 |
| Cucumbers | Sow outdoors | May 12 – Aug 11 |
| Summer squash | Sow outdoors | Apr 28 – Jun 12 |
| Winter squash & pumpkins | Sow outdoors | May 12 – Jun 12 |
| Snap beans | Sow outdoors | Apr 28 – Sep 3 |
| Sweet corn | Sow outdoors | Apr 28 – Aug 1 |
| Watermelon & cantaloupe | Sow outdoors | May 12 – Jun 12 |
| Okra | Sow outdoors | May 5 – May 28 |
| Peas | Sow outdoors (spring) | Mar 12 – Apr 27 |
| Potatoes | Plant outdoors (spring) | Mar 12 – May 12 |
| Onions | Start seeds indoors (spring) | Jan 29 – Feb 25 |
| Onions | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (spring) | Feb 22 – Mar 28 |
| Broccoli | Transplant outdoors (spring) | Mar 29 – Apr 27 |
| Broccoli | Start seeds indoors (fall) | Jul 22 – Aug 1 |
| Broccoli | Transplant outdoors (fall) | Aug 21 – Sep 1 |
| Cabbage | Start seeds indoors (spring) | Feb 12 – Mar 12 |
| Cabbage | Transplant outdoors (spring) | Mar 12 – Apr 12 |
| Cabbage | Start seeds indoors (fall) | Jul 12 – Aug 11 |
| Cabbage | Transplant outdoors (fall) | Aug 11 – Sep 11 |
| Leaf lettuce | Sow outdoors (spring) | Mar 12 – May 28 |
| Leaf lettuce | Sow outdoors (fall) | Aug 11 – Sep 27 |
| Spinach | Sow outdoors (spring) | Mar 5 – Apr 18 |
| Spinach | Sow outdoors (fall) | Aug 28 – Oct 2 |
| Radishes | Sow outdoors (spring) | Mar 12 – May 2 |
| Radishes | Sow outdoors (fall) | Aug 11 – Oct 12 |
| Kale | Sow outdoors (spring) | Mar 29 – Apr 18 |
| Kale | Sow outdoors (fall) | Aug 4 – Sep 11 |
| Carrots | Sow outdoors (spring) | Apr 12 – May 28 |
| Carrots | Sow outdoors (fall) | Jul 12 – Aug 27 |
| Garlic | Plant outdoors (fall) | Nov 11 – Dec 12 |
Where these dates come from
ZIP code 95689 is matched to the NOAA station Georgetown Rs, CA, 53.6 km away, at 3,001 ft elevation (34 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Georgetown Rs, CA (used) | 3,001 ft | Apr 12 | Nov 21 |
| Sutter Hill Cdf, CA | 1,586 ft | Mar 4 | Dec 11 |
| Placerville, CA | 1,850 ft | Mar 31 | Nov 21 |
| Pacific House, CA | 3,450 ft | Apr 26 | Nov 2 |
Frost dates near Volcano
- Pioneer, CA 95666 · last Apr 12, first Nov 21
- Fiddletown, CA 95629 · last Mar 31, first Nov 21
- Pine Grove, CA 95665 · last Apr 12, first Nov 21
- West Point, CA 95255 · last Apr 26, first Nov 2
- Somerset, CA 95684 · last Apr 26, first Nov 2
- Glencoe, CA 95232 · last Mar 31, first Nov 21
- Mount Aukum, CA 95656 · last Mar 31, first Nov 21
- River Pines, CA 95675 · last Mar 31, first Nov 21
Frequently asked questions
- When is the last frost in Volcano, CA?
- For ZIP code 95689, the average last spring frost (32°F) is April 12, based on NOAA 1991-2020 climate normals for the Georgetown Rs, CA weather station. There is a 1-in-10 chance of a frost after May 10.
- When is the first frost in Volcano, CA?
- The average first fall frost (32°F) is November 21. There is a 1-in-10 chance of frost by October 29, so tender plants are at risk from that point on.
- How long is the growing season in 95689?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 221 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.