Frost dates for 96113Herlong, CA
The average last spring frost in Herlong is May 21 and the average first fall frost is October 1, giving a typical growing season of about 130 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 21
- Average first fall frost
- Oct 1
- Growing season
- 130 days
Safer after Jun 11 (1-in-10 risk)
Possible by Sep 9 (1-in-10 risk)
Last frost typically in 206 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 23 · Jun 10 · Jun 29 | Aug 28 · Sep 12 · Sep 30 | 92 days | 100% |
| Frost / freeze (32°F) | Apr 30 · May 21 · Jun 11 | Sep 9 · Oct 1 · Oct 19 | 130 days | 100% |
| Hard freeze (28°F) | Apr 13 · May 2 · May 26 | Sep 29 · Oct 17 · Nov 4 | 166 days | 100% |
Planting calendar for Herlong
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 20 – Jun 26 |
| Tomatoes | Transplant outdoors | Jun 6 – Jun 11 |
| Peppers | Start seeds indoors | Apr 20 – May 21 |
| Peppers | Transplant outdoors | Jun 20 – Jul 21 |
| Eggplant | Start seeds indoors | May 7 – Jun 5 |
| Eggplant | Transplant outdoors | Jun 20 – Jul 21 |
| Cucumbers | Sow outdoors | Jun 20 – Jun 21 |
| Summer squash | Sow outdoors | Jun 6 – Jul 21 |
| Winter squash & pumpkins | Sow outdoors | Jun 20 – Jul 21 |
| Snap beans | Sow outdoors | Jun 6 – Jul 14 |
| Sweet corn | Sow outdoors | Jun 6 – Jun 11 |
| Watermelon & cantaloupe | Sow outdoors | Jun 20 – Jul 21 |
| Okra | Sow outdoors | Jun 13 – Jul 6 |
| Peas | Sow outdoors (spring) | Apr 20 – Jun 5 |
| Potatoes | Plant outdoors (spring) | Apr 20 – Jun 20 |
| Onions | Start seeds indoors (spring) | Mar 9 – Apr 5 |
| Onions | Transplant outdoors (spring) | May 7 – Jun 5 |
| Broccoli | Start seeds indoors (spring) | Apr 2 – May 6 |
| Broccoli | Transplant outdoors (spring) | May 7 – Jun 5 |
| Broccoli | Start seeds indoors (fall) | Jun 1 – Jun 11 |
| Broccoli | Transplant outdoors (fall) | Jul 1 – Jul 12 |
| Cabbage | Start seeds indoors (spring) | Mar 23 – Apr 20 |
| Cabbage | Transplant outdoors (spring) | Apr 20 – May 21 |
| Cabbage | Start seeds indoors (fall) | May 22 – Jun 21 |
| Cabbage | Transplant outdoors (fall) | Jun 21 – Jul 22 |
| Leaf lettuce | Sow outdoors (spring) | Apr 20 – Jul 6 |
| Leaf lettuce | Sow outdoors (fall) | Jun 21 – Aug 7 |
| Spinach | Sow outdoors (spring) | Apr 13 – May 27 |
| Spinach | Sow outdoors (fall) | Jul 8 – Aug 12 |
| Radishes | Sow outdoors (spring) | Apr 20 – Jun 10 |
| Radishes | Sow outdoors (fall) | Jun 21 – Aug 22 |
| Kale | Sow outdoors (spring) | May 7 – May 27 |
| Kale | Sow outdoors (fall) | Jun 14 – Jul 22 |
| Carrots | Sow outdoors (spring) | May 21 – Jul 6 |
| Carrots | Sow outdoors (fall) | May 22 – Jul 7 |
| Garlic | Plant outdoors (fall) | Sep 21 – Oct 22 |
Where these dates come from
ZIP code 96113 is matched to the NOAA station Doyle 4 Sse, CA, 21.1 km away, at 4,390 ft elevation (342 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Doyle 4 Sse, CA (used) | 4,390 ft | May 21 | Oct 1 |
| Portola, CA | 4,850 ft | Jun 11 | Sep 10 |
| Susanville 2Sw, CA | 4,212 ft | May 16 | Oct 8 |
| Sutcliffe, NV | 3,900 ft | Apr 15 | Nov 11 |
Frost dates near Herlong
- Blairsden Graeagle, CA 96103 · last May 21, first Oct 1
- Doyle, CA 96109 · last May 21, first Oct 1
- Milford, CA 96121 · last May 16, first Oct 8
- Wendel, CA 96136 · last May 16, first Oct 8
- Standish, CA 96128 · last May 16, first Oct 8
- Janesville, CA 96114 · last May 16, first Oct 8
- Litchfield, CA 96117 · last May 16, first Oct 8
- Vinton, CA 96135 · last Jun 11, first Sep 10
Frequently asked questions
- When is the last frost in Herlong, CA?
- For ZIP code 96113, the average last spring frost (32°F) is May 21, based on NOAA 1991-2020 climate normals for the Doyle 4 Sse, CA weather station. There is a 1-in-10 chance of a frost after June 11.
- When is the first frost in Herlong, CA?
- The average first fall frost (32°F) is October 1. There is a 1-in-10 chance of frost by September 9, so tender plants are at risk from that point on.
- How long is the growing season in 96113?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 130 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.