Frost dates for 97369Otter Rock, OR
The average last spring frost in Otter Rock is March 12 and the average first fall frost is December 10, giving a typical growing season of about 271 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 12
- Average first fall frost
- Dec 10
- Growing season
- 271 days
Safer after Apr 16 (1-in-10 risk)
Possible by Nov 7 (1-in-10 risk)
First frost typically in 39 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) | Mar 25 · Apr 20 · May 8 | Oct 13 · Nov 9 · Dec 9 | 203 days | 100% |
| Frost / freeze (32°F) | Jan 24 · Mar 12 · Apr 16 | Nov 7 · Dec 10 · Feb 8 | 271 days | 98% |
| Hard freeze (28°F) | Dec 7 · Jan 28 · Mar 5 | Nov 24 · Dec 28 · Feb 20 | 340 days | 67% |
Planting calendar for Otter Rock
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 | Feb 9 – Apr 17 |
| Tomatoes | Transplant outdoors | Mar 28 – Aug 20 |
| Peppers | Start seeds indoors | Feb 9 – Mar 12 |
| Peppers | Transplant outdoors | Apr 11 – May 12 |
| Eggplant | Start seeds indoors | Feb 26 – Mar 27 |
| Eggplant | Transplant outdoors | Apr 11 – May 12 |
| Cucumbers | Sow outdoors | Apr 11 – Aug 30 |
| Summer squash | Sow outdoors | Mar 28 – May 12 |
| Winter squash & pumpkins | Sow outdoors | Apr 11 – May 12 |
| Snap beans | Sow outdoors | Mar 28 – Sep 22 |
| Sweet corn | Sow outdoors | Mar 28 – Aug 20 |
| Watermelon & cantaloupe | Sow outdoors | Apr 11 – May 12 |
| Okra | Sow outdoors | Apr 4 – Apr 27 |
| Peas | Sow outdoors (spring) | Feb 9 – Mar 27 |
| Potatoes | Plant outdoors (spring) | Feb 9 – Apr 11 |
| Onions | Start seeds indoors (spring) | Dec 29 – Jan 25 |
| Onions | Transplant outdoors (spring) | Feb 26 – Mar 27 |
| Broccoli | Start seeds indoors (spring) | Jan 22 – Feb 25 |
| Broccoli | Transplant outdoors (spring) | Feb 26 – Mar 27 |
| Broccoli | Start seeds indoors (fall) | Aug 10 – Aug 20 |
| Broccoli | Transplant outdoors (fall) | Sep 9 – Sep 20 |
| Cabbage | Start seeds indoors (spring) | Jan 12 – Feb 9 |
| Cabbage | Transplant outdoors (spring) | Feb 9 – Mar 12 |
| Cabbage | Start seeds indoors (fall) | Jul 31 – Aug 30 |
| Cabbage | Transplant outdoors (fall) | Aug 30 – Sep 30 |
| Leaf lettuce | Sow outdoors (spring) | Feb 9 – Apr 27 |
| Leaf lettuce | Sow outdoors (fall) | Aug 30 – Oct 16 |
| Spinach | Sow outdoors (spring) | Feb 2 – Mar 18 |
| Spinach | Sow outdoors (fall) | Sep 16 – Oct 21 |
| Radishes | Sow outdoors (spring) | Feb 9 – Apr 1 |
| Radishes | Sow outdoors (fall) | Aug 30 – Oct 31 |
| Kale | Sow outdoors (spring) | Feb 26 – Mar 18 |
| Kale | Sow outdoors (fall) | Aug 23 – Sep 30 |
| Carrots | Sow outdoors (spring) | Mar 12 – Apr 27 |
| Carrots | Sow outdoors (fall) | Jul 31 – Sep 15 |
| Garlic | Plant outdoors (fall) | Nov 30 – Dec 31 |
Where these dates come from
ZIP code 97369 is matched to the NOAA station Newport 3N, OR, 8.4 km away, at 220 ft elevation (137 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Newport 3N, OR (used) | 220 ft | Mar 12 | Dec 10 |
| Newport, OR | 122 ft | Mar 21 | Nov 27 |
| Newport 1 Se, OR | 8 ft | Feb 19 | Dec 16 |
| Otis 2 Ne, OR | 150 ft | Apr 4 | Nov 16 |
Frost dates near Otter Rock
- Depoe Bay, OR 97341 · last Apr 4, first Nov 16
- Newport, OR 97365 · last Mar 21, first Nov 27
- Siletz, OR 97380 · last Mar 21, first Nov 27
- Gleneden Beach, OR 97388 · last Apr 4, first Nov 16
- Lincoln City, OR 97367 · last Apr 4, first Nov 16
- Toledo, OR 97391 · last Mar 21, first Nov 27
- South Beach, OR 97366 · last Mar 21, first Nov 27
- Logsden, OR 97357 · last Apr 4, first Nov 16
Frequently asked questions
- When is the last frost in Otter Rock, OR?
- For ZIP code 97369, the average last spring frost (32°F) is March 12, based on NOAA 1991-2020 climate normals for the Newport 3N, OR weather station. There is a 1-in-10 chance of a frost after April 16.
- When is the first frost in Otter Rock, OR?
- The average first fall frost (32°F) is December 10. There is a 1-in-10 chance of frost by November 7, so tender plants are at risk from that point on.
- How long is the growing season in 97369?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 271 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.