Frost dates for 99922Hydaburg, AK
The average last spring frost in Hydaburg is April 14 and the average first fall frost is November 1, giving a typical growing season of about 201 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 14
- Average first fall frost
- Nov 1
- Growing season
- 201 days
Safer after May 2 (1-in-10 risk)
Possible by Oct 16 (1-in-10 risk)
First frost typically in 5 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 21 · May 4 · May 19 | Oct 1 · Oct 16 · Oct 30 | 164 days | 100% |
| Frost / freeze (32°F) | Mar 30 · Apr 14 · May 2 | Oct 16 · Nov 1 · Nov 21 | 201 days | 100% |
| Hard freeze (28°F) | Mar 3 · Mar 22 · Apr 6 | Oct 30 · Nov 23 · Dec 16 | 244 days | 100% |
Planting calendar for Hydaburg
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 14 – May 20 |
| Tomatoes | Transplant outdoors | Apr 30 – Jul 12 |
| Peppers | Start seeds indoors | Mar 14 – Apr 14 |
| Peppers | Transplant outdoors | May 14 – Jun 14 |
| Eggplant | Start seeds indoors | Mar 31 – Apr 29 |
| Eggplant | Transplant outdoors | May 14 – Jun 14 |
| Cucumbers | Sow outdoors | May 14 – Jul 22 |
| Summer squash | Sow outdoors | Apr 30 – Jun 14 |
| Winter squash & pumpkins | Sow outdoors | May 14 – Jun 14 |
| Snap beans | Sow outdoors | Apr 30 – Aug 14 |
| Sweet corn | Sow outdoors | Apr 30 – Jul 12 |
| Watermelon & cantaloupe | Sow outdoors | May 14 – Jun 14 |
| Okra | Sow outdoors | May 7 – May 30 |
| Peas | Sow outdoors (spring) | Mar 14 – Apr 29 |
| Potatoes | Plant outdoors (spring) | Mar 14 – May 14 |
| Onions | Start seeds indoors (spring) | Jan 31 – Feb 27 |
| Onions | Transplant outdoors (spring) | Mar 31 – Apr 29 |
| Broccoli | Start seeds indoors (spring) | Feb 24 – Mar 30 |
| Broccoli | Transplant outdoors (spring) | Mar 31 – Apr 29 |
| Broccoli | Start seeds indoors (fall) | Jul 2 – Jul 12 |
| Broccoli | Transplant outdoors (fall) | Aug 1 – Aug 12 |
| Cabbage | Start seeds indoors (spring) | Feb 14 – Mar 14 |
| Cabbage | Transplant outdoors (spring) | Mar 14 – Apr 14 |
| Cabbage | Start seeds indoors (fall) | Jun 22 – Jul 22 |
| Cabbage | Transplant outdoors (fall) | Jul 22 – Aug 22 |
| Leaf lettuce | Sow outdoors (spring) | Mar 14 – May 30 |
| Leaf lettuce | Sow outdoors (fall) | Jul 22 – Sep 7 |
| Spinach | Sow outdoors (spring) | Mar 7 – Apr 20 |
| Spinach | Sow outdoors (fall) | Aug 8 – Sep 12 |
| Radishes | Sow outdoors (spring) | Mar 14 – May 4 |
| Radishes | Sow outdoors (fall) | Jul 22 – Sep 22 |
| Kale | Sow outdoors (spring) | Mar 31 – Apr 20 |
| Kale | Sow outdoors (fall) | Jul 15 – Aug 22 |
| Carrots | Sow outdoors (spring) | Apr 14 – May 30 |
| Carrots | Sow outdoors (fall) | Jun 22 – Aug 7 |
| Garlic | Plant outdoors (fall) | Oct 22 – Nov 22 |
Where these dates come from
ZIP code 99922 is matched to the NOAA station Craig, AK, 35.9 km away, at 43 ft elevation (49 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Craig, AK (used) | 43 ft | Apr 14 | Nov 1 |
| Klawock Ap, AK | 12 ft | Apr 29 | Oct 16 |
| Thorne Bay, AK | 286 ft | May 1 | Oct 13 |
| Ketchikan 10N, AK | 295 ft | Apr 20 | Oct 26 |
Frost dates near Hydaburg
- Craig, AK 99921 · last Apr 14, first Nov 1
- Klawock, AK 99925 · last Apr 29, first Oct 16
- Thorne Bay, AK 99919 · last May 1, first Oct 13
- Meyers Chuck, AK 99903 · last May 1, first Oct 13
- Ketchikan, AK 99901 · last Apr 22, first Oct 23
- Ward Cove, AK 99928 · last Apr 22, first Oct 23
- Metlakatla, AK 99926 · last Apr 4, first Oct 31
- Coffman Cove, AK 99918 · last Apr 29, first Oct 16
Frequently asked questions
- When is the last frost in Hydaburg, AK?
- For ZIP code 99922, the average last spring frost (32°F) is April 14, based on NOAA 1991-2020 climate normals for the Craig, AK weather station. There is a 1-in-10 chance of a frost after May 2.
- When is the first frost in Hydaburg, AK?
- The average first fall frost (32°F) is November 1. There is a 1-in-10 chance of frost by October 16, so tender plants are at risk from that point on.
- How long is the growing season in 99922?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 201 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.