Frost Dates: First and last frost dates for Haiwee, CA
ℹ️ How to read these charts for the spring
As spring unfolds, the risk of frost gradually decreases each day until your tender plants are finally safe. The probabilities shown in the chart help you make smart decisions about when to plant.
While frost typically forms at 32°F, tender plants can be damaged even when temperatures are slightly higher. Air temperatures are often measured several feet above the ground, but temperatures at plant level can be several degrees colder. Protected areas like porches help by blocking radiational cooling. Given these variables, we consider 36°F the "caution zone" for frost-sensitive plants.
Key dates for your spring planting:
- By May 17, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
- Around April 24, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
- Before April 9, there's still an 80% risk of frost — too early for tomatoes and other tender plants unless you're prepared to protect them
If the 10-day forecast shows no temperatures below 40°F, you might safely plant earlier than the above dates suggest. Many gardeners watch for this weather window to get a head start on the growing season.
| Temperature | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| Last 16° | Jan 25 | Jan 13 | Jan 3 | Dec 22 | -- | -- | -- | -- | -- |
| Last 20° | Feb 27 | Feb 15 | Feb 6 | Jan 29 | Jan 21 | Jan 11 | Dec 30 | -- | -- |
| Last 24° | Mar 21 | Mar 9 | Feb 28 | Feb 20 | Feb 12 | Feb 5 | Jan 27 | Jan 17 | Jan 2 |
| Last 28° | Apr 3 | Mar 26 | Mar 19 | Mar 14 | Mar 9 | Mar 4 | Feb 27 | Feb 21 | Feb 12 |
| Last 32° | Apr 28 | Apr 19 | Apr 13 | Apr 7 | Apr 2 | Mar 28 | Mar 23 | Mar 16 | Mar 8 |
| Last 36° | May 17 | May 9 | May 3 | Apr 28 | Apr 24 | Apr 19 | Apr 15 | Apr 9 | Apr 1 |
ℹ️ How to read these charts for the fall
As summer ends in Haiwee, CA, nighttime temperatures begin to drop, and your risk of frost increases with each passing day. Knowing when to expect frost helps you harvest sensitive crops and extend your growing season with protection methods.
The chart below shows the probability of experiencing specific temperatures on various dates. Here's what this means for your garden:
These probabilities help you time your end-of-season harvests and know when to apply protective measures like row covers, cloches, or cold frames to extend your harvest.
| Temperature | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| First 16° | Dec 12 | Dec 23 | Jan 3 | Jan 16 | -- | -- | -- | -- | -- |
| First 20° | Nov 19 | Dec 2 | Dec 11 | Dec 20 | Dec 28 | Jan 7 | Jan 20 | -- | -- |
| First 24° | Nov 14 | Nov 20 | Nov 24 | Nov 28 | Dec 2 | Dec 6 | Dec 10 | Dec 15 | Dec 22 |
| First 28° | Nov 2 | Nov 8 | Nov 13 | Nov 16 | Nov 20 | Nov 23 | Nov 27 | Dec 1 | Dec 8 |
| First 32° | Oct 20 | Oct 26 | Oct 30 | Nov 3 | Nov 6 | Nov 9 | Nov 13 | Nov 17 | Nov 23 |
| First 36° | Oct 14 | Oct 18 | Oct 22 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 5 | Nov 9 |
📍 Frost Dates for other nearby locations
- Inyokern, CA 35.9 mi
- Kern River Ph, CA 40.8 mi
- Independence, CA 47.8 mi
- Trona, CA 48.3 mi
- Wildrose Rs, CA 55.3 mi
- Glennville, CA 58.0 mi
- Randsburg, CA 58.2 mi
- Lodgepole, CA 61.2 mi
- Ash Mtn, CA 63.5 mi
- Three Rvrs Edison Ph, CA 65.2 mi
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Data is provided by the NOAA National Centers for Environmental Information.