Frost dates for 99666Nunam Iqua, AK
The average last spring frost in Nunam Iqua is June 5 and the average first fall frost is September 3, giving a typical growing season of about 88 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 5
- Average first fall frost
- Sep 3
- Growing season
- 88 days
Safer after Jun 26 (1-in-10 risk)
Possible by Aug 15 (1-in-10 risk)
Last frost typically in 221 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) | — | — | 51 days | 100% |
| Frost / freeze (32°F) | May 20 · Jun 5 · Jun 26 | Aug 15 · Sep 3 · Sep 22 | 88 days | 100% |
| Hard freeze (28°F) | May 7 · May 23 · Jun 6 | Sep 1 · Sep 19 · Oct 6 | 117 days | 100% |
Planting calendar for Nunam Iqua
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 | May 5 – Jul 11 |
| Tomatoes | Transplant outdoors | Jun 21 – May 14 |
| Peppers | Start seeds indoors | May 5 – Jun 5 |
| Peppers | Transplant outdoors | Jul 5 – Aug 5 |
| Eggplant | Start seeds indoors | May 22 – Jun 20 |
| Eggplant | Transplant outdoors | Jul 5 – Aug 5 |
| Cucumbers | Sow outdoors | Jul 5 – May 24 |
| Summer squash | Sow outdoors | Jun 21 – Aug 5 |
| Winter squash & pumpkins | Sow outdoors | Jul 5 – Aug 5 |
| Snap beans | Sow outdoors | Jun 21 – Jun 16 |
| Sweet corn | Sow outdoors | Jun 21 – May 14 |
| Watermelon & cantaloupe | Sow outdoors | Jul 5 – Aug 5 |
| Okra | Sow outdoors | Jun 28 – Jul 21 |
| Peas | Sow outdoors (spring) | May 5 – Jun 20 |
| Potatoes | Plant outdoors (spring) | May 5 – Jul 5 |
| Onions | Start seeds indoors (spring) | Mar 24 – Apr 20 |
| Onions | Transplant outdoors (spring) | May 22 – Jun 20 |
| Broccoli | Start seeds indoors (spring) | Apr 17 – May 21 |
| Broccoli | Transplant outdoors (spring) | May 22 – Jun 20 |
| Broccoli | Start seeds indoors (fall) | May 4 – May 14 |
| Broccoli | Transplant outdoors (fall) | Jun 3 – Jun 14 |
| Cabbage | Start seeds indoors (spring) | Apr 7 – May 5 |
| Cabbage | Transplant outdoors (spring) | May 5 – Jun 5 |
| Cabbage | Start seeds indoors (fall) | Apr 24 – May 24 |
| Cabbage | Transplant outdoors (fall) | May 24 – Jun 24 |
| Leaf lettuce | Sow outdoors (spring) | May 5 – Jul 21 |
| Leaf lettuce | Sow outdoors (fall) | May 24 – Jul 10 |
| Spinach | Sow outdoors (spring) | Apr 28 – Jun 11 |
| Spinach | Sow outdoors (fall) | Jun 10 – Jul 15 |
| Radishes | Sow outdoors (spring) | May 5 – Jun 25 |
| Radishes | Sow outdoors (fall) | May 24 – Jul 25 |
| Kale | Sow outdoors (spring) | May 22 – Jun 11 |
| Kale | Sow outdoors (fall) | May 17 – Jun 24 |
| Carrots | Sow outdoors (spring) | Jun 5 – Jul 21 |
| Carrots | Sow outdoors (fall) | Apr 24 – Jun 9 |
| Garlic | Plant outdoors (fall) | Aug 24 – Sep 24 |
Where these dates come from
ZIP code 99666 is matched to the NOAA station Nome Muni Ap, AK, 222.1 km away, at 13 ft elevation (0 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 |
|---|---|---|---|
| Nome Muni Ap, AK (used) | 13 ft | Jun 5 | Sep 3 |
| Bethel Ap, AK | 102 ft | May 21 | Sep 22 |
| Kaltag Ap, AK | 181 ft | May 25 | Sep 3 |
| Deering Ap, AK | 21 ft | — | — |
Frost dates near Nunam Iqua
- Alakanuk, AK 99554 · last Jun 5, first Sep 3
- Emmonak, AK 99581 · last Jun 5, first Sep 3
- Mountain Village, AK 99632 · last May 21, first Sep 22
- Scammon Bay, AK 99662 · last May 21, first Sep 22
- Kotlik, AK 99620 · last Jun 5, first Sep 3
Frequently asked questions
- When is the last frost in Nunam Iqua, AK?
- For ZIP code 99666, the average last spring frost (32°F) is June 5, based on NOAA 1991-2020 climate normals for the Nome Muni Ap, AK weather station. There is a 1-in-10 chance of a frost after June 26.
- When is the first frost in Nunam Iqua, AK?
- The average first fall frost (32°F) is September 3. There is a 1-in-10 chance of frost by August 15, so tender plants are at risk from that point on.
- How long is the growing season in 99666?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 88 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.