Frost dates for 97451Lorane, OR
The average last spring frost in Lorane is April 24 and the average first fall frost is October 25, giving a typical growing season of about 183 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 24
- Average first fall frost
- Oct 25
- Growing season
- 183 days
Safer after May 10 (1-in-10 risk)
Possible by Sep 30 (1-in-10 risk)
Last frost typically in 174 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) | Apr 26 · May 12 · May 30 | Sep 7 · Oct 1 · Oct 26 | 140 days | 100% |
| Frost / freeze (32°F) | Mar 31 · Apr 24 · May 10 | Sep 30 · Oct 25 · Nov 16 | 183 days | 100% |
| Hard freeze (28°F) | Feb 21 · Mar 23 · Apr 22 | Oct 21 · Nov 18 · Dec 17 | 239 days | 100% |
Planting calendar for Lorane
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 | Mar 24 – May 30 |
| Tomatoes | Transplant outdoors | May 10 – Jul 5 |
| Peppers | Start seeds indoors | Mar 24 – Apr 24 |
| Peppers | Transplant outdoors | May 24 – Jun 24 |
| Eggplant | Start seeds indoors | Apr 10 – May 9 |
| Eggplant | Transplant outdoors | May 24 – Jun 24 |
| Cucumbers | Sow outdoors | May 24 – Jul 15 |
| Summer squash | Sow outdoors | May 10 – Jun 24 |
| Winter squash & pumpkins | Sow outdoors | May 24 – Jun 24 |
| Snap beans | Sow outdoors | May 10 – Aug 7 |
| Sweet corn | Sow outdoors | May 10 – Jul 5 |
| Watermelon & cantaloupe | Sow outdoors | May 24 – Jun 24 |
| Okra | Sow outdoors | May 17 – Jun 9 |
| Peas | Sow outdoors (spring) | Mar 24 – May 9 |
| Potatoes | Plant outdoors (spring) | Mar 24 – May 24 |
| Onions | Start seeds indoors (spring) | Feb 10 – Mar 9 |
| Onions | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (spring) | Mar 6 – Apr 9 |
| Broccoli | Transplant outdoors (spring) | Apr 10 – May 9 |
| Broccoli | Start seeds indoors (fall) | Jun 25 – Jul 5 |
| Broccoli | Transplant outdoors (fall) | Jul 25 – Aug 5 |
| Cabbage | Start seeds indoors (spring) | Feb 24 – Mar 24 |
| Cabbage | Transplant outdoors (spring) | Mar 24 – Apr 24 |
| Cabbage | Start seeds indoors (fall) | Jun 15 – Jul 15 |
| Cabbage | Transplant outdoors (fall) | Jul 15 – Aug 15 |
| Leaf lettuce | Sow outdoors (spring) | Mar 24 – Jun 9 |
| Leaf lettuce | Sow outdoors (fall) | Jul 15 – Aug 31 |
| Spinach | Sow outdoors (spring) | Mar 17 – Apr 30 |
| Spinach | Sow outdoors (fall) | Aug 1 – Sep 5 |
| Radishes | Sow outdoors (spring) | Mar 24 – May 14 |
| Radishes | Sow outdoors (fall) | Jul 15 – Sep 15 |
| Kale | Sow outdoors (spring) | Apr 10 – Apr 30 |
| Kale | Sow outdoors (fall) | Jul 8 – Aug 15 |
| Carrots | Sow outdoors (spring) | Apr 24 – Jun 9 |
| Carrots | Sow outdoors (fall) | Jun 15 – Jul 31 |
| Garlic | Plant outdoors (fall) | Oct 15 – Nov 15 |
Where these dates come from
ZIP code 97451 is matched to the NOAA station Cottage Grove 2E, OR, 17.7 km away, at 595 ft elevation (87 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Cottage Grove 2E, OR (used) | 595 ft | Apr 24 | Oct 25 |
| Cottage Grove Dam, OR | 831 ft | Apr 12 | Nov 1 |
| Drain, OR | 292 ft | Apr 16 | Oct 25 |
| Dorena, OR | 820 ft | Apr 16 | Oct 28 |
Frost dates near Lorane
- Cottage Grove, OR 97424 · last Apr 12, first Nov 1
- Drain, OR 97435 · last Apr 16, first Oct 25
- Creswell, OR 97426 · last Apr 16, first Oct 28
- Eugene, OR 97405 · last Mar 7, first Nov 27
- Veneta, OR 97487 · last Apr 18, first Oct 25
- Yoncalla, OR 97499 · last Apr 16, first Oct 25
- Pleasant Hill, OR 97455 · last Mar 7, first Nov 27
- Springfield, OR 97475 · last Apr 11, first Oct 23
Frequently asked questions
- When is the last frost in Lorane, OR?
- For ZIP code 97451, the average last spring frost (32°F) is April 24, based on NOAA 1991-2020 climate normals for the Cottage Grove 2E, OR weather station. There is a 1-in-10 chance of a frost after May 10.
- When is the first frost in Lorane, OR?
- The average first fall frost (32°F) is October 25. There is a 1-in-10 chance of frost by September 30, so tender plants are at risk from that point on.
- How long is the growing season in 97451?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 183 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.