Frost dates for 93649Piedra, CA
The average last spring frost in Piedra is February 23 and the average first fall frost is December 12, giving a typical growing season of about 294 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 23
- Average first fall frost
- Dec 12
- Growing season
- 294 days
Safer after Apr 4 (1-in-10 risk)
Possible by Nov 25 (1-in-10 risk)
First frost typically in 41 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) | Feb 27 · Apr 2 · Apr 24 | Nov 10 · Nov 27 · Dec 12 | 240 days | 100% |
| Frost / freeze (32°F) | Jan 17 · Feb 23 · Apr 4 | Nov 25 · Dec 12 · Jan 7 | 294 days | 99% |
| Hard freeze (28°F) | Dec 19 · Jan 21 · Mar 3 | Dec 7 · Dec 27 · Feb 11 | 351 days | 69% |
Planting calendar for Piedra
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 | Jan 23 – Mar 31 |
| Tomatoes | Transplant outdoors | Mar 11 – Aug 22 |
| Peppers | Start seeds indoors | Jan 23 – Feb 23 |
| Peppers | Transplant outdoors | Mar 25 – Apr 25 |
| Eggplant | Start seeds indoors | Feb 9 – Mar 10 |
| Eggplant | Transplant outdoors | Mar 25 – Apr 25 |
| Cucumbers | Sow outdoors | Mar 25 – Sep 1 |
| Summer squash | Sow outdoors | Mar 11 – Apr 25 |
| Winter squash & pumpkins | Sow outdoors | Mar 25 – Apr 25 |
| Snap beans | Sow outdoors | Mar 11 – Sep 24 |
| Sweet corn | Sow outdoors | Mar 11 – Aug 22 |
| Watermelon & cantaloupe | Sow outdoors | Mar 25 – Apr 25 |
| Okra | Sow outdoors | Mar 18 – Apr 10 |
| Peas | Sow outdoors (spring) | Jan 23 – Mar 10 |
| Potatoes | Plant outdoors (spring) | Jan 23 – Mar 25 |
| Onions | Start seeds indoors (spring) | Dec 12 – Jan 8 |
| Onions | Transplant outdoors (spring) | Feb 9 – Mar 10 |
| Broccoli | Start seeds indoors (spring) | Jan 5 – Feb 8 |
| Broccoli | Transplant outdoors (spring) | Feb 9 – Mar 10 |
| Broccoli | Start seeds indoors (fall) | Aug 12 – Aug 22 |
| Broccoli | Transplant outdoors (fall) | Sep 11 – Sep 22 |
| Cabbage | Start seeds indoors (spring) | Dec 26 – Jan 23 |
| Cabbage | Transplant outdoors (spring) | Jan 23 – Feb 23 |
| Cabbage | Start seeds indoors (fall) | Aug 2 – Sep 1 |
| Cabbage | Transplant outdoors (fall) | Sep 1 – Oct 2 |
| Leaf lettuce | Sow outdoors (spring) | Jan 23 – Apr 10 |
| Leaf lettuce | Sow outdoors (fall) | Sep 1 – Oct 18 |
| Spinach | Sow outdoors (spring) | Jan 16 – Mar 1 |
| Spinach | Sow outdoors (fall) | Sep 18 – Oct 23 |
| Radishes | Sow outdoors (spring) | Jan 23 – Mar 15 |
| Radishes | Sow outdoors (fall) | Sep 1 – Nov 2 |
| Kale | Sow outdoors (spring) | Feb 9 – Mar 1 |
| Kale | Sow outdoors (fall) | Aug 25 – Oct 2 |
| Carrots | Sow outdoors (spring) | Feb 23 – Apr 10 |
| Carrots | Sow outdoors (fall) | Aug 2 – Sep 17 |
| Garlic | Plant outdoors (fall) | Dec 2 – Jan 2 |
Where these dates come from
ZIP code 93649 is matched to the NOAA station Balch Pwr House, CA, 24.4 km away, at 1,735 ft elevation (472 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Balch Pwr House, CA (used) | 1,735 ft | Feb 23 | Dec 12 |
| Auberry 2 Nw, CA | 2,090 ft | Mar 25 | Dec 3 |
| Fresno 5 Ne, CA | 338 ft | Jan 30 | Dec 11 |
| Fresno Yosemite Intl Ap, CA | 333 ft | Jan 14 | Dec 14 |
Frost dates near Piedra
- Tollhouse, CA 93667 · last Mar 25, first Dec 3
- Yokuts, CA 93675 · last Feb 23, first Dec 12
- Sanger, CA 93657 · last Jan 30, first Dec 11
- Prather, CA 93651 · last Mar 9, first Dec 1
- Orange Cove, CA 93646 · last Jan 23, first Dec 13
- Dunlap, CA 93621 · last Feb 23, first Dec 12
- Clovis, CA 93619 · last Jan 14, first Dec 14
- Auberry, CA 93602 · last Mar 25, first Dec 3
Frequently asked questions
- When is the last frost in Piedra, CA?
- For ZIP code 93649, the average last spring frost (32°F) is February 23, based on NOAA 1991-2020 climate normals for the Balch Pwr House, CA weather station. There is a 1-in-10 chance of a frost after April 4.
- When is the first frost in Piedra, CA?
- The average first fall frost (32°F) is December 12. There is a 1-in-10 chance of frost by November 25, so tender plants are at risk from that point on.
- How long is the growing season in 93649?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 294 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.