Frost Dates: First and last frost dates for Three Lynx, OR
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 3, you have a 90% chance of being frost-free — this is your "safe date" for planting tender crops
- Around May 15, there's a 50/50 chance of frost — check weather forecasts carefully if planting now
- Before May 3, 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 15 | Jan 31 | Jan 18 | Jan 5 | Dec 18 | -- | -- | -- | -- |
| Last 20° | Feb 23 | Feb 11 | Feb 1 | Jan 24 | Jan 15 | Jan 6 | Dec 24 | -- | -- |
| Last 24° | Feb 27 | Feb 18 | Feb 11 | Feb 5 | Jan 31 | Jan 25 | Jan 19 | Jan 12 | Jan 1 |
| Last 28° | Mar 26 | Mar 15 | Mar 7 | Feb 28 | Feb 22 | Feb 16 | Feb 9 | Feb 1 | Jan 21 |
| Last 32° | May 8 | May 1 | Apr 26 | Apr 21 | Apr 17 | Apr 13 | Apr 9 | Apr 3 | Mar 27 |
| Last 36° | Jun 3 | May 28 | May 23 | May 19 | May 15 | May 12 | May 8 | May 3 | Apr 26 |
ℹ️ How to read these charts for the fall
As summer ends in Three Lynx, OR, 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 11 | Dec 26 | Jan 8 | Jan 23 | Feb 15 | -- | -- | -- | -- |
| First 20° | Nov 28 | Dec 13 | Dec 24 | Jan 2 | Jan 13 | Jan 24 | Feb 11 | -- | -- |
| First 24° | Nov 21 | Dec 1 | Dec 9 | Dec 15 | Dec 22 | Dec 28 | Jan 3 | Jan 12 | Jan 24 |
| First 28° | Nov 4 | Nov 14 | Nov 21 | Nov 28 | Dec 3 | Dec 9 | Dec 16 | Dec 23 | Jan 2 |
| First 32° | Oct 6 | Oct 12 | Oct 17 | Oct 21 | Oct 25 | Oct 29 | Nov 2 | Nov 7 | Nov 14 |
| First 36° | Sep 23 | Sep 29 | Oct 3 | Oct 6 | Oct 10 | Oct 13 | Oct 16 | Oct 20 | Oct 26 |
📍 Frost Dates for other nearby locations
- Estacada, OR 19.7 mi
- Headworks Portland Wtr, OR 23.0 mi
- Government Camp, OR 25.8 mi
- Detroit Dam, OR 30.6 mi
- Scotts Mills, OR 33.6 mi
- Skamania Fish Hatchry, WA 35.8 mi
- Bonneville Dam, OR 36.2 mi
- Marion Frks Fish Hatch, OR 36.6 mi
- Troutdale, OR 36.8 mi
- Oregon City, OR 40.2 mi
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Data is provided by the NOAA National Centers for Environmental Information.