Frost dates for 99761Noatak, AK
The average last spring frost in Noatak is June 10 and the average first fall frost is September 11, giving a typical growing season of about 92 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 10
- Average first fall frost
- Sep 11
- Growing season
- 92 days
Safer after Jun 23 (1-in-10 risk)
Possible by Aug 26 (1-in-10 risk)
Last frost typically in 226 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) | — | — | 62 days | 100% |
| Frost / freeze (32°F) | May 24 · Jun 10 · Jun 23 | Aug 26 · Sep 11 · Sep 27 | 92 days | 100% |
| Hard freeze (28°F) | May 14 · Jun 1 · Jun 12 | Sep 6 · Sep 24 · Oct 6 | 114 days | 100% |
Planting calendar for Noatak
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 10 – Jul 16 |
| Tomatoes | Transplant outdoors | Jun 26 – May 22 |
| Peppers | Start seeds indoors | May 10 – Jun 10 |
| Peppers | Transplant outdoors | Jul 10 – Aug 10 |
| Eggplant | Start seeds indoors | May 27 – Jun 25 |
| Eggplant | Transplant outdoors | Jul 10 – Aug 10 |
| Cucumbers | Sow outdoors | Jul 10 – Jun 1 |
| Summer squash | Sow outdoors | Jun 26 – Aug 10 |
| Winter squash & pumpkins | Sow outdoors | Jul 10 – Aug 10 |
| Snap beans | Sow outdoors | Jun 26 – Jun 24 |
| Sweet corn | Sow outdoors | Jun 26 – May 22 |
| Watermelon & cantaloupe | Sow outdoors | Jul 10 – Aug 10 |
| Okra | Sow outdoors | Jul 3 – Jul 26 |
| Peas | Sow outdoors (spring) | May 10 – Jun 25 |
| Potatoes | Plant outdoors (spring) | May 10 – Jul 10 |
| Onions | Start seeds indoors (spring) | Mar 29 – Apr 25 |
| Onions | Transplant outdoors (spring) | May 27 – Jun 25 |
| Broccoli | Start seeds indoors (spring) | Apr 22 – May 26 |
| Broccoli | Transplant outdoors (spring) | May 27 – Jun 25 |
| Broccoli | Start seeds indoors (fall) | May 12 – May 22 |
| Broccoli | Transplant outdoors (fall) | Jun 11 – Jun 22 |
| Cabbage | Start seeds indoors (spring) | Apr 12 – May 10 |
| Cabbage | Transplant outdoors (spring) | May 10 – Jun 10 |
| Cabbage | Start seeds indoors (fall) | May 2 – Jun 1 |
| Cabbage | Transplant outdoors (fall) | Jun 1 – Jul 2 |
| Leaf lettuce | Sow outdoors (spring) | May 10 – Jul 26 |
| Leaf lettuce | Sow outdoors (fall) | Jun 1 – Jul 18 |
| Spinach | Sow outdoors (spring) | May 3 – Jun 16 |
| Spinach | Sow outdoors (fall) | Jun 18 – Jul 23 |
| Radishes | Sow outdoors (spring) | May 10 – Jun 30 |
| Radishes | Sow outdoors (fall) | Jun 1 – Aug 2 |
| Kale | Sow outdoors (spring) | May 27 – Jun 16 |
| Kale | Sow outdoors (fall) | May 25 – Jul 2 |
| Carrots | Sow outdoors (spring) | Jun 10 – Jul 26 |
| Carrots | Sow outdoors (fall) | May 2 – Jun 17 |
| Garlic | Plant outdoors (fall) | Sep 1 – Oct 2 |
Where these dates come from
ZIP code 99761 is matched to the NOAA station Kivalina Ap, AK, 69.3 km away, at 10 ft elevation (49 ft lower 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 |
|---|---|---|---|
| Kivalina Ap, AK (used) | 10 ft | Jun 10 | Sep 11 |
| Kotzebue Ralph Wein Ap, AK | 30 ft | Jun 5 | Sep 24 |
| Deering Ap, AK | 21 ft | — | — |
| Nome Muni Ap, AK | 13 ft | Jun 5 | Sep 3 |
Frost dates near Noatak
- Kotzebue, AK 99752 · last Jun 5, first Sep 24
Frequently asked questions
- When is the last frost in Noatak, AK?
- For ZIP code 99761, the average last spring frost (32°F) is June 10, based on NOAA 1991-2020 climate normals for the Kivalina Ap, AK weather station. There is a 1-in-10 chance of a frost after June 23.
- When is the first frost in Noatak, AK?
- The average first fall frost (32°F) is September 11. There is a 1-in-10 chance of frost by August 26, so tender plants are at risk from that point on.
- How long is the growing season in 99761?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 92 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.