Frost dates for 98397Longmire, WA
The average last spring frost in Longmire is May 22 and the average first fall frost is October 3, giving a typical growing season of about 134 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 22
- Average first fall frost
- Oct 3
- Growing season
- 134 days
Safer after Jun 9 (1-in-10 risk)
Possible by Sep 16 (1-in-10 risk)
Last frost typically in 204 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) | — | — | 87 days | 100% |
| Frost / freeze (32°F) | May 3 · May 22 · Jun 9 | Sep 16 · Oct 3 · Oct 18 | 134 days | 100% |
| Hard freeze (28°F) | Apr 15 · May 2 · May 21 | Oct 3 · Oct 20 · Nov 5 | 169 days | 100% |
Planting calendar for Longmire
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 21 – Jun 27 |
| Tomatoes | Transplant outdoors | Jun 7 – Jun 13 |
| Peppers | Start seeds indoors | Apr 21 – May 22 |
| Peppers | Transplant outdoors | Jun 21 – Jul 22 |
| Eggplant | Start seeds indoors | May 8 – Jun 6 |
| Eggplant | Transplant outdoors | Jun 21 – Jul 22 |
| Cucumbers | Sow outdoors | Jun 21 – Jun 23 |
| Summer squash | Sow outdoors | Jun 7 – Jul 22 |
| Winter squash & pumpkins | Sow outdoors | Jun 21 – Jul 22 |
| Snap beans | Sow outdoors | Jun 7 – Jul 16 |
| Sweet corn | Sow outdoors | Jun 7 – Jun 13 |
| Watermelon & cantaloupe | Sow outdoors | Jun 21 – Jul 22 |
| Okra | Sow outdoors | Jun 14 – Jul 7 |
| Peas | Sow outdoors (spring) | Apr 21 – Jun 6 |
| Potatoes | Plant outdoors (spring) | Apr 21 – Jun 21 |
| Onions | Start seeds indoors (spring) | Mar 10 – Apr 6 |
| Onions | Transplant outdoors (spring) | May 8 – Jun 6 |
| Broccoli | Start seeds indoors (spring) | Apr 3 – May 7 |
| Broccoli | Transplant outdoors (spring) | May 8 – Jun 6 |
| Broccoli | Start seeds indoors (fall) | Jun 3 – Jun 13 |
| Broccoli | Transplant outdoors (fall) | Jul 3 – Jul 14 |
| Cabbage | Start seeds indoors (spring) | Mar 24 – Apr 21 |
| Cabbage | Transplant outdoors (spring) | Apr 21 – May 22 |
| Cabbage | Start seeds indoors (fall) | May 24 – Jun 23 |
| Cabbage | Transplant outdoors (fall) | Jun 23 – Jul 24 |
| Leaf lettuce | Sow outdoors (spring) | Apr 21 – Jul 7 |
| Leaf lettuce | Sow outdoors (fall) | Jun 23 – Aug 9 |
| Spinach | Sow outdoors (spring) | Apr 14 – May 28 |
| Spinach | Sow outdoors (fall) | Jul 10 – Aug 14 |
| Radishes | Sow outdoors (spring) | Apr 21 – Jun 11 |
| Radishes | Sow outdoors (fall) | Jun 23 – Aug 24 |
| Kale | Sow outdoors (spring) | May 8 – May 28 |
| Kale | Sow outdoors (fall) | Jun 16 – Jul 24 |
| Carrots | Sow outdoors (spring) | May 22 – Jul 7 |
| Carrots | Sow outdoors (fall) | May 24 – Jul 9 |
| Garlic | Plant outdoors (fall) | Sep 23 – Oct 24 |
Where these dates come from
ZIP code 98397 is matched to the NOAA station Longmire Rainier Nps, WA, 0.1 km away, at 2,762 ft elevation (16 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Longmire Rainier Nps, WA (used) | 2,762 ft | May 22 | Oct 3 |
| Rainier Paradise Rs, WA | 5,427 ft | — | — |
| Packwood, WA | 1,060 ft | Apr 30 | Oct 8 |
| Glenoma, WA | 840 ft | Apr 24 | Oct 15 |
Frost dates near Longmire
- Ashford, WA 98304 · last May 22, first Oct 3
- Packwood, WA 98361 · last Apr 30, first Oct 8
- Randle, WA 98377 · last —, first —
- Mineral, WA 98355 · last Apr 18, first Oct 31
- Elbe, WA 98330 · last May 22, first Oct 3
- Glenoma, WA 98336 · last Apr 24, first Oct 15
- Eatonville, WA 98328 · last Apr 11, first Oct 30
- Morton, WA 98356 · last Apr 24, first Oct 15
Frequently asked questions
- When is the last frost in Longmire, WA?
- For ZIP code 98397, the average last spring frost (32°F) is May 22, based on NOAA 1991-2020 climate normals for the Longmire Rainier Nps, WA weather station. There is a 1-in-10 chance of a frost after June 9.
- When is the first frost in Longmire, WA?
- The average first fall frost (32°F) is October 3. There is a 1-in-10 chance of frost by September 16, so tender plants are at risk from that point on.
- How long is the growing season in 98397?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 134 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.