Frost dates for 83554White Bird, ID
The average last spring frost in White Bird is May 6 and the average first fall frost is October 9, giving a typical growing season of about 155 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 6
- Average first fall frost
- Oct 9
- Growing season
- 155 days
Safer after May 26 (1-in-10 risk)
Possible by Sep 24 (1-in-10 risk)
Last frost typically in 184 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) | May 11 · May 29 · Jun 20 | Sep 10 · Sep 27 · Oct 12 | 119 days | 100% |
| Frost / freeze (32°F) | Apr 23 · May 6 · May 26 | Sep 24 · Oct 9 · Oct 26 | 155 days | 100% |
| Hard freeze (28°F) | Mar 31 · Apr 18 · May 5 | Oct 7 · Oct 22 · Nov 7 | 185 days | 100% |
Planting calendar for White Bird
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 | Apr 5 – Jun 11 |
| Tomatoes | Transplant outdoors | May 22 – Jun 19 |
| Peppers | Start seeds indoors | Apr 5 – May 6 |
| Peppers | Transplant outdoors | Jun 5 – Jul 6 |
| Eggplant | Start seeds indoors | Apr 22 – May 21 |
| Eggplant | Transplant outdoors | Jun 5 – Jul 6 |
| Cucumbers | Sow outdoors | Jun 5 – Jun 29 |
| Summer squash | Sow outdoors | May 22 – Jul 6 |
| Winter squash & pumpkins | Sow outdoors | Jun 5 – Jul 6 |
| Snap beans | Sow outdoors | May 22 – Jul 22 |
| Sweet corn | Sow outdoors | May 22 – Jun 19 |
| Watermelon & cantaloupe | Sow outdoors | Jun 5 – Jul 6 |
| Okra | Sow outdoors | May 29 – Jun 21 |
| Peas | Sow outdoors (spring) | Apr 5 – May 21 |
| Potatoes | Plant outdoors (spring) | Apr 5 – Jun 5 |
| Onions | Start seeds indoors (spring) | Feb 22 – Mar 21 |
| Onions | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (spring) | Mar 18 – Apr 21 |
| Broccoli | Transplant outdoors (spring) | Apr 22 – May 21 |
| Broccoli | Start seeds indoors (fall) | Jun 9 – Jun 19 |
| Broccoli | Transplant outdoors (fall) | Jul 9 – Jul 20 |
| Cabbage | Start seeds indoors (spring) | Mar 8 – Apr 5 |
| Cabbage | Transplant outdoors (spring) | Apr 5 – May 6 |
| Cabbage | Start seeds indoors (fall) | May 30 – Jun 29 |
| Cabbage | Transplant outdoors (fall) | Jun 29 – Jul 30 |
| Leaf lettuce | Sow outdoors (spring) | Apr 5 – Jun 21 |
| Leaf lettuce | Sow outdoors (fall) | Jun 29 – Aug 15 |
| Spinach | Sow outdoors (spring) | Mar 29 – May 12 |
| Spinach | Sow outdoors (fall) | Jul 16 – Aug 20 |
| Radishes | Sow outdoors (spring) | Apr 5 – May 26 |
| Radishes | Sow outdoors (fall) | Jun 29 – Aug 30 |
| Kale | Sow outdoors (spring) | Apr 22 – May 12 |
| Kale | Sow outdoors (fall) | Jun 22 – Jul 30 |
| Carrots | Sow outdoors (spring) | May 6 – Jun 21 |
| Carrots | Sow outdoors (fall) | May 30 – Jul 15 |
| Garlic | Plant outdoors (fall) | Sep 29 – Oct 30 |
Where these dates come from
ZIP code 83554 is matched to the NOAA station Riggins, ID, 45 km away, at 2,056 ft elevation (25 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Riggins, ID (used) | 2,056 ft | May 6 | Oct 9 |
| Grangeville, ID | 3,300 ft | May 9 | Oct 3 |
| Cottonwood 2 Wsw, ID | 3,945 ft | May 6 | Oct 13 |
| Kooskia 5 Sse, ID | 2,330 ft | Apr 30 | Oct 11 |
Frost dates near White Bird
- Lucile, ID 83542 · last May 9, first Oct 3
- Fenn, ID 83531 · last May 9, first Oct 3
- Grangeville, ID 83530 · last May 9, first Oct 3
- Cottonwood, ID 83522 · last May 6, first Oct 13
- Stites, ID 83552 · last Apr 30, first Oct 11
- Riggins, ID 83549 · last —, first —
- Greencreek, ID 83533 · last May 24, first Sep 20
- Ferdinand, ID 83526 · last May 6, first Oct 13
Frequently asked questions
- When is the last frost in White Bird, ID?
- For ZIP code 83554, the average last spring frost (32°F) is May 6, based on NOAA 1991-2020 climate normals for the Riggins, ID weather station. There is a 1-in-10 chance of a frost after May 26.
- When is the first frost in White Bird, ID?
- The average first fall frost (32°F) is October 9. There is a 1-in-10 chance of frost by September 24, so tender plants are at risk from that point on.
- How long is the growing season in 83554?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 155 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.