Frost dates for 96009Bieber, CA
The average last spring frost in Bieber is May 28 and the average first fall frost is September 29, giving a typical growing season of about 125 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 28
- Average first fall frost
- Sep 29
- Growing season
- 125 days
Safer after Jun 16 (1-in-10 risk)
Possible by Sep 10 (1-in-10 risk)
Last frost typically in 207 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) | May 28 · Jun 13 · Jun 29 | Aug 26 · Sep 15 · Oct 1 | 91 days | 100% |
| Frost / freeze (32°F) | May 7 · May 28 · Jun 16 | Sep 10 · Sep 29 · Oct 15 | 125 days | 100% |
| Hard freeze (28°F) | Apr 16 · May 2 · May 29 | Sep 27 · Oct 13 · Nov 2 | 162 days | 100% |
Planting calendar for Bieber
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 | Apr 27 – Jul 3 |
| Tomatoes | Transplant outdoors | Jun 13 – Jun 9 |
| Peppers | Start seeds indoors | Apr 27 – May 28 |
| Peppers | Transplant outdoors | Jun 27 – Jul 28 |
| Eggplant | Start seeds indoors | May 14 – Jun 12 |
| Eggplant | Transplant outdoors | Jun 27 – Jul 28 |
| Cucumbers | Sow outdoors | Jun 27 – Jun 19 |
| Summer squash | Sow outdoors | Jun 13 – Jul 28 |
| Winter squash & pumpkins | Sow outdoors | Jun 27 – Jul 28 |
| Snap beans | Sow outdoors | Jun 13 – Jul 12 |
| Sweet corn | Sow outdoors | Jun 13 – Jun 9 |
| Watermelon & cantaloupe | Sow outdoors | Jun 27 – Jul 28 |
| Okra | Sow outdoors | Jun 20 – Jul 13 |
| Peas | Sow outdoors (spring) | Apr 27 – Jun 12 |
| Potatoes | Plant outdoors (spring) | Apr 27 – Jun 27 |
| Onions | Start seeds indoors (spring) | Mar 16 – Apr 12 |
| Onions | Transplant outdoors (spring) | May 14 – Jun 12 |
| Broccoli | Start seeds indoors (spring) | Apr 9 – May 13 |
| Broccoli | Transplant outdoors (spring) | May 14 – Jun 12 |
| Broccoli | Start seeds indoors (fall) | May 30 – Jun 9 |
| Broccoli | Transplant outdoors (fall) | Jun 29 – Jul 10 |
| Cabbage | Start seeds indoors (spring) | Mar 30 – Apr 27 |
| Cabbage | Transplant outdoors (spring) | Apr 27 – May 28 |
| Cabbage | Start seeds indoors (fall) | May 20 – Jun 19 |
| Cabbage | Transplant outdoors (fall) | Jun 19 – Jul 20 |
| Leaf lettuce | Sow outdoors (spring) | Apr 27 – Jul 13 |
| Leaf lettuce | Sow outdoors (fall) | Jun 19 – Aug 5 |
| Spinach | Sow outdoors (spring) | Apr 20 – Jun 3 |
| Spinach | Sow outdoors (fall) | Jul 6 – Aug 10 |
| Radishes | Sow outdoors (spring) | Apr 27 – Jun 17 |
| Radishes | Sow outdoors (fall) | Jun 19 – Aug 20 |
| Kale | Sow outdoors (spring) | May 14 – Jun 3 |
| Kale | Sow outdoors (fall) | Jun 12 – Jul 20 |
| Carrots | Sow outdoors (spring) | May 28 – Jul 13 |
| Carrots | Sow outdoors (fall) | May 20 – Jul 5 |
| Garlic | Plant outdoors (fall) | Sep 19 – Oct 20 |
Where these dates come from
ZIP code 96009 is matched to the NOAA station Adin Rs, CA, 16.9 km away, at 4,195 ft elevation (61 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Adin Rs, CA (used) | 4,195 ft | May 28 | Sep 29 |
| Canby 3 Sw, CA | 4,310 ft | Jun 1 | Sep 16 |
| Hat Creek, CA | 3,015 ft | May 29 | Sep 19 |
| Burney, CA | 3,198 ft | Jun 3 | Sep 14 |
Frost dates near Bieber
- Nubieber, CA 96068 · last May 28, first Sep 29
- Lookout, CA 96054 · last May 28, first Sep 29
- Adin, CA 96006 · last May 28, first Sep 29
- Mcarthur, CA 96056 · last May 29, first Sep 19
- Fall River Mills, CA 96028 · last May 29, first Sep 19
- Canby, CA 96015 · last Jun 1, first Sep 16
- Cassel, CA 96016 · last May 29, first Sep 19
- Termo, CA 96132 · last Jun 14, first Sep 18
Frequently asked questions
- When is the last frost in Bieber, CA?
- For ZIP code 96009, the average last spring frost (32°F) is May 28, based on NOAA 1991-2020 climate normals for the Adin Rs, CA weather station. There is a 1-in-10 chance of a frost after June 16.
- When is the first frost in Bieber, CA?
- The average first fall frost (32°F) is September 29. There is a 1-in-10 chance of frost by September 10, so tender plants are at risk from that point on.
- How long is the growing season in 96009?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 125 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.