Frost dates for 99724Beaver, AK
The average last spring frost in Beaver is May 28 and the average first fall frost is August 26, giving a typical growing season of about 87 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 28
- Average first fall frost
- Aug 26
- Growing season
- 87 days
Safer after Jun 19 (1-in-10 risk)
Possible by Aug 9 (1-in-10 risk)
Last frost typically in 213 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) | — | — | 58 days | 100% |
| Frost / freeze (32°F) | May 15 · May 28 · Jun 19 | Aug 9 · Aug 26 · Sep 8 | 87 days | 100% |
| Hard freeze (28°F) | May 3 · May 14 · May 30 | Aug 20 · Sep 6 · Sep 21 | 114 days | 100% |
Planting calendar for Beaver
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 27 – Jul 3 |
| Tomatoes | Transplant outdoors | Jun 13 – May 6 |
| Peppers | Start seeds indoors | Apr 27 – May 28 |
| Peppers | Transplant outdoors | Jun 27 – Jul 28 |
| Eggplant | Start seeds indoors | May 14 – Jun 12 |
| Eggplant | Transplant outdoors | Jun 27 – Jul 28 |
| Cucumbers | Sow outdoors | Jun 27 – May 16 |
| Summer squash | Sow outdoors | Jun 13 – Jul 28 |
| Winter squash & pumpkins | Sow outdoors | Jun 27 – Jul 28 |
| Snap beans | Sow outdoors | Jun 13 – Jun 8 |
| Sweet corn | Sow outdoors | Jun 13 – May 6 |
| Watermelon & cantaloupe | Sow outdoors | Jun 27 – Jul 28 |
| Okra | Sow outdoors | Jun 20 – Jul 13 |
| Peas | Sow outdoors (spring) | Apr 27 – Jun 12 |
| Potatoes | Plant outdoors (spring) | Apr 27 – Jun 27 |
| Onions | Start seeds indoors (spring) | Mar 16 – Apr 12 |
| Onions | Transplant outdoors (spring) | May 14 – Jun 12 |
| Broccoli | Start seeds indoors (spring) | Apr 9 – May 13 |
| Broccoli | Transplant outdoors (spring) | May 14 – Jun 12 |
| Broccoli | Start seeds indoors (fall) | Apr 26 – May 6 |
| Broccoli | Transplant outdoors (fall) | May 26 – Jun 6 |
| Cabbage | Start seeds indoors (spring) | Mar 30 – Apr 27 |
| Cabbage | Transplant outdoors (spring) | Apr 27 – May 28 |
| Cabbage | Start seeds indoors (fall) | Apr 16 – May 16 |
| Cabbage | Transplant outdoors (fall) | May 16 – Jun 16 |
| Leaf lettuce | Sow outdoors (spring) | Apr 27 – Jul 13 |
| Leaf lettuce | Sow outdoors (fall) | May 16 – Jul 2 |
| Spinach | Sow outdoors (spring) | Apr 20 – Jun 3 |
| Spinach | Sow outdoors (fall) | Jun 2 – Jul 7 |
| Radishes | Sow outdoors (spring) | Apr 27 – Jun 17 |
| Radishes | Sow outdoors (fall) | May 16 – Jul 17 |
| Kale | Sow outdoors (spring) | May 14 – Jun 3 |
| Kale | Sow outdoors (fall) | May 9 – Jun 16 |
| Carrots | Sow outdoors (spring) | May 28 – Jul 13 |
| Carrots | Sow outdoors (fall) | Apr 16 – Jun 1 |
| Garlic | Plant outdoors (fall) | Aug 16 – Sep 16 |
Where these dates come from
ZIP code 99724 is matched to the NOAA station Mile 42 Steese, AK, 126.9 km away, at 960 ft elevation (596 ft higher than the ZIP code's center). This station is relatively far away, so local dates may differ more than usual. Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Mile 42 Steese, AK (used) | 960 ft | May 28 | Aug 26 |
| Chandalar Lake, AK | 1,895 ft | — | — |
| Central #2, AK | 920 ft | May 25 | Aug 26 |
| Ft Knox Mine, AK | 1,621 ft | May 12 | Sep 17 |
Frost dates near Beaver
- Venetie, AK 99781 · last —, first —
Frequently asked questions
- When is the last frost in Beaver, AK?
- For ZIP code 99724, the average last spring frost (32°F) is May 28, based on NOAA 1991-2020 climate normals for the Mile 42 Steese, AK weather station. There is a 1-in-10 chance of a frost after June 19.
- When is the first frost in Beaver, AK?
- The average first fall frost (32°F) is August 26. There is a 1-in-10 chance of frost by August 9, so tender plants are at risk from that point on.
- How long is the growing season in 99724?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 87 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.