Frost dates for 97737Gilchrist, OR
The average last spring frost in Gilchrist is June 7 and the average first fall frost is September 18, giving a typical growing season of about 100 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 7
- Average first fall frost
- Sep 18
- Growing season
- 100 days
Safer after Jul 2 (1-in-10 risk)
Possible by Sep 3 (1-in-10 risk)
Last frost typically in 218 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) | — | — | 65 days | 100% |
| Frost / freeze (32°F) | May 16 · Jun 7 · Jul 2 | Sep 3 · Sep 18 · Oct 3 | 100 days | 100% |
| Hard freeze (28°F) | Apr 28 · May 16 · Jun 13 | Sep 17 · Oct 3 · Oct 18 | 141 days | 100% |
Planting calendar for Gilchrist
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 | May 7 – Jul 13 |
| Tomatoes | Transplant outdoors | Jun 23 – May 29 |
| Peppers | Start seeds indoors | May 7 – Jun 7 |
| Peppers | Transplant outdoors | Jul 7 – Aug 7 |
| Eggplant | Start seeds indoors | May 24 – Jun 22 |
| Eggplant | Transplant outdoors | Jul 7 – Aug 7 |
| Cucumbers | Sow outdoors | Jul 7 – Jun 8 |
| Summer squash | Sow outdoors | Jun 23 – Aug 7 |
| Winter squash & pumpkins | Sow outdoors | Jul 7 – Aug 7 |
| Snap beans | Sow outdoors | Jun 23 – Jul 1 |
| Sweet corn | Sow outdoors | Jun 23 – May 29 |
| Watermelon & cantaloupe | Sow outdoors | Jul 7 – Aug 7 |
| Okra | Sow outdoors | Jun 30 – Jul 23 |
| Peas | Sow outdoors (spring) | May 7 – Jun 22 |
| Potatoes | Plant outdoors (spring) | May 7 – Jul 7 |
| Onions | Start seeds indoors (spring) | Mar 26 – Apr 22 |
| Onions | Transplant outdoors (spring) | May 24 – Jun 22 |
| Broccoli | Start seeds indoors (spring) | Apr 19 – May 23 |
| Broccoli | Transplant outdoors (spring) | May 24 – Jun 22 |
| Broccoli | Start seeds indoors (fall) | May 19 – May 29 |
| Broccoli | Transplant outdoors (fall) | Jun 18 – Jun 29 |
| Cabbage | Start seeds indoors (spring) | Apr 9 – May 7 |
| Cabbage | Transplant outdoors (spring) | May 7 – Jun 7 |
| Cabbage | Start seeds indoors (fall) | May 9 – Jun 8 |
| Cabbage | Transplant outdoors (fall) | Jun 8 – Jul 9 |
| Leaf lettuce | Sow outdoors (spring) | May 7 – Jul 23 |
| Leaf lettuce | Sow outdoors (fall) | Jun 8 – Jul 25 |
| Spinach | Sow outdoors (spring) | Apr 30 – Jun 13 |
| Spinach | Sow outdoors (fall) | Jun 25 – Jul 30 |
| Radishes | Sow outdoors (spring) | May 7 – Jun 27 |
| Radishes | Sow outdoors (fall) | Jun 8 – Aug 9 |
| Kale | Sow outdoors (spring) | May 24 – Jun 13 |
| Kale | Sow outdoors (fall) | Jun 1 – Jul 9 |
| Carrots | Sow outdoors (spring) | Jun 7 – Jul 23 |
| Carrots | Sow outdoors (fall) | May 9 – Jun 24 |
| Garlic | Plant outdoors (fall) | Sep 8 – Oct 9 |
Where these dates come from
ZIP code 97737 is matched to the NOAA station Wickiup Dam, OR, 22.8 km away, at 4,358 ft elevation (143 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Wickiup Dam, OR (used) | 4,358 ft | Jun 7 | Sep 18 |
| Odell Lake-East, OR | 4,800 ft | — | — |
| Chemult, OR | 4,760 ft | — | — |
| Lemolo Lake 3 Nnw, OR | 4,077 ft | Jun 1 | Sep 23 |
Frost dates near Gilchrist
- Crescent, OR 97733 · last Jun 7, first Sep 18
- La Pine, OR 97739 · last Jun 7, first Sep 18
- Chemult, OR 97731 · last —, first —
- Bend, OR 97707 · last Jun 7, first Sep 18
- Fort Rock, OR 97735 · last —, first —
- Silver Lake, OR 97638 · last —, first —
- Oakridge, OR 97463 · last Apr 24, first Oct 24
- Crater Lake, OR 97604 · last —, first —
Frequently asked questions
- When is the last frost in Gilchrist, OR?
- For ZIP code 97737, the average last spring frost (32°F) is June 7, based on NOAA 1991-2020 climate normals for the Wickiup Dam, OR weather station. There is a 1-in-10 chance of a frost after July 2.
- When is the first frost in Gilchrist, OR?
- The average first fall frost (32°F) is September 18. There is a 1-in-10 chance of frost by September 3, so tender plants are at risk from that point on.
- How long is the growing season in 97737?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 100 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.