Frost dates for 99565Chignik Lagoon, AK
The average last spring frost in Chignik Lagoon is May 26 and the average first fall frost is September 15, giving a typical growing season of about 111 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 26
- Average first fall frost
- Sep 15
- Growing season
- 111 days
Safer after Jun 11 (1-in-10 risk)
Possible by Aug 31 (1-in-10 risk)
Last frost typically in 206 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 31 · Jun 14 · Jul 4 | Aug 16 · Sep 1 · Sep 16 | 77 days | 100% |
| Frost / freeze (32°F) | May 9 · May 26 · Jun 11 | Aug 31 · Sep 15 · Sep 29 | 111 days | 100% |
| Hard freeze (28°F) | Apr 23 · May 8 · May 25 | Sep 11 · Sep 27 · Oct 10 | 142 days | 100% |
Planting calendar for Chignik Lagoon
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 25 – Jul 1 |
| Tomatoes | Transplant outdoors | Jun 11 – May 26 |
| Peppers | Start seeds indoors | Apr 25 – May 26 |
| Peppers | Transplant outdoors | Jun 25 – Jul 26 |
| Eggplant | Start seeds indoors | May 12 – Jun 10 |
| Eggplant | Transplant outdoors | Jun 25 – Jul 26 |
| Cucumbers | Sow outdoors | Jun 25 – Jun 5 |
| Summer squash | Sow outdoors | Jun 11 – Jul 26 |
| Winter squash & pumpkins | Sow outdoors | Jun 25 – Jul 26 |
| Snap beans | Sow outdoors | Jun 11 – Jun 28 |
| Sweet corn | Sow outdoors | Jun 11 – May 26 |
| Watermelon & cantaloupe | Sow outdoors | Jun 25 – Jul 26 |
| Okra | Sow outdoors | Jun 18 – Jul 11 |
| Peas | Sow outdoors (spring) | Apr 25 – Jun 10 |
| Potatoes | Plant outdoors (spring) | Apr 25 – Jun 25 |
| Onions | Start seeds indoors (spring) | Mar 14 – Apr 10 |
| Onions | Transplant outdoors (spring) | May 12 – Jun 10 |
| Broccoli | Start seeds indoors (spring) | Apr 7 – May 11 |
| Broccoli | Transplant outdoors (spring) | May 12 – Jun 10 |
| Broccoli | Start seeds indoors (fall) | May 16 – May 26 |
| Broccoli | Transplant outdoors (fall) | Jun 15 – Jun 26 |
| Cabbage | Start seeds indoors (spring) | Mar 28 – Apr 25 |
| Cabbage | Transplant outdoors (spring) | Apr 25 – May 26 |
| Cabbage | Start seeds indoors (fall) | May 6 – Jun 5 |
| Cabbage | Transplant outdoors (fall) | Jun 5 – Jul 6 |
| Leaf lettuce | Sow outdoors (spring) | Apr 25 – Jul 11 |
| Leaf lettuce | Sow outdoors (fall) | Jun 5 – Jul 22 |
| Spinach | Sow outdoors (spring) | Apr 18 – Jun 1 |
| Spinach | Sow outdoors (fall) | Jun 22 – Jul 27 |
| Radishes | Sow outdoors (spring) | Apr 25 – Jun 15 |
| Radishes | Sow outdoors (fall) | Jun 5 – Aug 6 |
| Kale | Sow outdoors (spring) | May 12 – Jun 1 |
| Kale | Sow outdoors (fall) | May 29 – Jul 6 |
| Carrots | Sow outdoors (spring) | May 26 – Jul 11 |
| Carrots | Sow outdoors (fall) | May 6 – Jun 21 |
| Garlic | Plant outdoors (fall) | Sep 5 – Oct 6 |
Where these dates come from
ZIP code 99565 is matched to the NOAA station King Salmon, AK, 45.7 km away, at 63 ft elevation (160 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| King Salmon, AK (used) | 63 ft | May 26 | Sep 15 |
| King Salmon 42 Se, AK | 661 ft | Jun 9 | Sep 11 |
| Intricate Bay, AK | 120 ft | Jun 4 | Sep 12 |
| Iliamna Ap, AK | 143 ft | May 10 | Oct 1 |
Frost dates near Chignik Lagoon
- Egegik, AK 99579 · last May 26, first Sep 15
- King Salmon, AK 99613 · last May 26, first Sep 15
- South Naknek, AK 99670 · last May 26, first Sep 15
- Naknek, AK 99633 · last May 26, first Sep 15
- Pilot Point, AK 99649 · last May 26, first Sep 15
Frequently asked questions
- When is the last frost in Chignik Lagoon, AK?
- For ZIP code 99565, the average last spring frost (32°F) is May 26, based on NOAA 1991-2020 climate normals for the King Salmon, AK weather station. There is a 1-in-10 chance of a frost after June 11.
- When is the first frost in Chignik Lagoon, AK?
- The average first fall frost (32°F) is September 15. There is a 1-in-10 chance of frost by August 31, so tender plants are at risk from that point on.
- How long is the growing season in 99565?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 111 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.