Hayfork, CA frost dates
Last spring frostApr 16median date
First fall frostOct 31median date
Growing season198 daysfrost-free
Hardiness zone8bZone 8b
How Hayfork compares
- In 8 years out of 10, the last spring frost in Hayfork falls between March 23 and May 3, a 41-day window. The first fall frost falls between October 13 and November 26.
- The median last frost is 16 days later than the California median of Mar 31.
- Its 198-day growing season is longer than 32% of the 636 California places with a regular frost season (state median 235 days).
- The last frost is 31 days later than the zone 8b median of Mar 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8b chart.
- The weather station records an average of 59 nights a year at or below 32°F.
- Nearby Redding, CA, 68 km away, gets only light, occasional frost, a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 23 |
| 50% (median) | April 16 |
| 10% (safe for tender plants) | May 3 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 13 |
| 50% (median) | October 31 |
| 90% (late) | November 26 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Hayfork, CA
Hayfork, CA frost dates — last frost Apr 16, first frost Oct 31, zone 8b. whenisthelastfrost.com
Crop
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Start indoors: Jan 22 to Feb 5Transplant outside: Mar 19 to Apr 2
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 30 to May 14
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 30 to May 14
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 23 to May 7
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 26 to Apr 9Sow outdoors: Mar 19 to Apr 23Plant for fall: Sep 5 to Oct 3
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 19 to Apr 2Sow outdoors: Mar 19 to Apr 2Plant for fall: Aug 22 to Sep 12
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 2 to Apr 16Plant for fall: Jul 25 to Aug 15
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 26 to Apr 9Plant for fall: Jul 25 to Aug 15
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 2 to Apr 16Plant for fall: Jul 25 to Aug 15
Start indoors: Mar 5 to Mar 19Transplant outside: May 7 to May 21Sow outdoors: May 7 to May 21
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 23 to May 7
Sow outdoors: Mar 5 to Mar 26Plant for fall: Aug 8 to Aug 29
Sow outdoors: Mar 5 to Mar 26Plant for fall: Sep 5 to Sep 26
Sow outdoors: Mar 12 to Apr 23Plant for fall: Sep 19 to Oct 10
Start indoors: Mar 19 to Mar 26Transplant outside: Apr 30 to May 7Sow outdoors: Apr 23 to May 7Plant for fall: Aug 15 to Aug 29
Start indoors: Mar 19 to Mar 26Sow outdoors: Apr 23 to May 7Plant for fall: Aug 22 to Sep 5
Start indoors: Mar 19 to Mar 26Sow outdoors: Apr 23 to May 7
Start indoors: Mar 19 to Mar 26Transplant outside: Apr 30 to May 14
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 8 to Aug 22
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 22 to Sep 5
Sow outdoors: Mar 26 to Apr 16
Sow outdoors: Apr 2 to Apr 30Plant for fall: Aug 22 to Sep 5
Sow outdoors: Apr 2 to Apr 23Plant for fall: Sep 5 to Sep 26
Sow outdoors: Apr 23 to May 14Plant for fall: Aug 15 to Aug 29
Sow outdoors: Apr 23 to May 7
Transplant outside: Apr 30 to May 21
Plant for fall: Oct 17 to Nov 21
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Hayfork, CA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 22 – Feb 5 | Mar 19 – Apr 2 | — | — |
| Peppers | Feb 5 – Feb 19 | Apr 30 – May 14 | — | — |
| Eggplant | Feb 5 – Feb 19 | Apr 30 – May 14 | — | — |
| Tomatoes | Feb 19 – Mar 5 | Apr 23 – May 7 | — | — |
| Lettuce | Feb 19 – Mar 5 | Mar 26 – Apr 9 | Mar 19 – Apr 23 | Sep 5 – Oct 3 |
| Kale | Feb 19 – Mar 5 | Mar 19 – Apr 2 | Mar 19 – Apr 2 | Aug 22 – Sep 12 |
| Broccoli | Feb 19 – Mar 5 | Apr 2 – Apr 16 | — | Jul 25 – Aug 15 |
| Cabbage | Feb 19 – Mar 5 | Mar 26 – Apr 9 | — | Jul 25 – Aug 15 |
| Cauliflower | Feb 19 – Mar 5 | Apr 2 – Apr 16 | — | Jul 25 – Aug 15 |
| Okra | Mar 5 – Mar 19 | May 7 – May 21 | May 7 – May 21 | — |
| Basil | Mar 5 – Mar 19 | Apr 23 – May 7 | — | — |
| Peas | — | — | Mar 5 – Mar 26 | Aug 8 – Aug 29 |
| Spinach | — | — | Mar 5 – Mar 26 | Sep 5 – Sep 26 |
| Radishes | — | — | Mar 12 – Apr 23 | Sep 19 – Oct 10 |
| Cucumbers | Mar 19 – Mar 26 | Apr 30 – May 7 | Apr 23 – May 7 | Aug 15 – Aug 29 |
| Zucchini & Summer Squash | Mar 19 – Mar 26 | — | Apr 23 – May 7 | Aug 22 – Sep 5 |
| Winter Squash & Pumpkins | Mar 19 – Mar 26 | — | Apr 23 – May 7 | — |
| Melons & Watermelon | Mar 19 – Mar 26 | Apr 30 – May 14 | — | — |
| Carrots | — | — | Mar 26 – Apr 23 | Aug 8 – Aug 22 |
| Beets | — | — | Mar 26 – Apr 23 | Aug 22 – Sep 5 |
| Potatoes | — | — | Mar 26 – Apr 16 | — |
| Swiss Chard | — | — | Apr 2 – Apr 30 | Aug 22 – Sep 5 |
| Cilantro | — | — | Apr 2 – Apr 23 | Sep 5 – Sep 26 |
| Green Beans | — | — | Apr 23 – May 14 | Aug 15 – Aug 29 |
| Sweet Corn | — | — | Apr 23 – May 7 | — |
| Sweet Potatoes | — | Apr 30 – May 21 | — | — |
| Garlic | — | — | — | Oct 17 – Nov 21 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Big Bar 4 E, CA weather station, 22 km away (elevation 1,253 ft (382 m)).
Frost dates near Hayfork
- Douglas City May 3 · Oct 11
- Junction City May 3 · Oct 11
- Big Bar Apr 16 · Oct 31
- Hyampom Apr 16 · Oct 31
- Platina May 3 · Oct 11
- Weaverville May 3 · Oct 11
- Mad River Mar 4 · Nov 22
- Burnt Ranch Apr 16 · Oct 31
- Lewiston Apr 23 · Oct 22
- Zenia Mar 10 · Dec 1
Frequently asked questions
When is the last frost in Hayfork, CA?
The median last spring frost in Hayfork, CA is April 16. There is still about a 10% chance of frost after May 3, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Hayfork, CA?
The median first fall frost is October 31, with about a 10% chance of frost before October 13.
How long is the growing season in Hayfork, CA?
About 198 days between the median last spring frost and first fall frost.
What planting zone is Hayfork, CA?
Hayfork, CA is in USDA hardiness zone 8b.