Frost Dates: First and last frost dates for Cecilville, 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 June 30, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
- Around June 5, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
- Before May 20, 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° | Feb 12 | Jan 31 | Jan 22 | Jan 14 | Jan 4 | Dec 23 | -- | -- | -- |
| Last 20° | Mar 21 | Mar 3 | Feb 18 | Feb 7 | Jan 27 | Jan 17 | Jan 4 | Dec 20 | Nov 21 |
| Last 24° | Apr 22 | Apr 7 | Mar 27 | Mar 17 | Mar 8 | Feb 28 | Feb 18 | Feb 7 | Jan 23 |
| Last 28° | May 20 | May 10 | May 3 | Apr 27 | Apr 21 | Apr 16 | Apr 10 | Apr 3 | Mar 24 |
| Last 32° | Jun 8 | May 31 | May 26 | May 21 | May 16 | May 12 | May 7 | May 2 | Apr 24 |
| Last 36° | Jun 30 | Jun 21 | Jun 15 | Jun 10 | Jun 5 | Jun 1 | May 27 | May 20 | May 12 |
ℹ️ How to read these charts for the fall
As summer ends in Cecilville, 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° | Nov 26 | Dec 11 | Dec 22 | Jan 2 | Jan 14 | Jan 31 | -- | -- | -- |
| First 20° | Nov 12 | Nov 22 | Nov 30 | Dec 6 | Dec 12 | Dec 19 | Dec 26 | Jan 5 | -- |
| First 24° | Oct 27 | Nov 5 | Nov 12 | Nov 17 | Nov 23 | Nov 28 | Dec 4 | Dec 10 | Dec 19 |
| First 28° | Oct 12 | Oct 18 | Oct 22 | Oct 26 | Oct 29 | Nov 2 | Nov 5 | Nov 10 | Nov 16 |
| First 32° | Sep 23 | Sep 30 | Oct 5 | Oct 9 | Oct 13 | Oct 17 | Oct 21 | Oct 26 | Nov 2 |
| First 36° | Sep 7 | Sep 13 | Sep 17 | Sep 21 | Sep 25 | Sep 28 | Oct 2 | Oct 6 | Oct 12 |
📍 Frost Dates for other nearby locations
- Callahan, CA 25.6 mi
- Big Bar, CA 28.6 mi
- Orleans, CA 29.6 mi
- Weaverville, CA 32.6 mi
- Ft Jones Rs, CA 37.1 mi
- Willow Creek, CA 37.3 mi
- Hayfork, CA 41.5 mi
- Happy Camp Rs, CA 48.4 mi
- Yreka, CA 51.5 mi
- Whiskeytown Rsvr, CA 56.1 mi
Or enter a new zipcode:
Data is provided by the NOAA National Centers for Environmental Information.