Frost dates for 99744Anderson, AK
The average last spring frost in Anderson is May 15 and the average first fall frost is September 11, giving a typical growing season of about 117 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- May 15
- Average first fall frost
- Sep 11
- Growing season
- 117 days
Safer after May 29 (1-in-10 risk)
Possible by Aug 27 (1-in-10 risk)
Last frost typically in 201 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 13 · May 26 · Jun 8 | Aug 15 · Aug 30 · Sep 14 | 95 days | 100% |
| Frost / freeze (32°F) | May 3 · May 15 · May 29 | Aug 27 · Sep 11 · Sep 24 | 117 days | 100% |
| Hard freeze (28°F) | Apr 23 · May 5 · May 18 | Sep 5 · Sep 22 · Oct 5 | 138 days | 100% |
Planting calendar for Anderson
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 14 – Jun 20 |
| Tomatoes | Transplant outdoors | May 31 – May 22 |
| Peppers | Start seeds indoors | Apr 14 – May 15 |
| Peppers | Transplant outdoors | Jun 14 – Jul 15 |
| Eggplant | Start seeds indoors | May 1 – May 30 |
| Eggplant | Transplant outdoors | Jun 14 – Jul 15 |
| Cucumbers | Sow outdoors | Jun 14 – Jun 1 |
| Summer squash | Sow outdoors | May 31 – Jul 15 |
| Winter squash & pumpkins | Sow outdoors | Jun 14 – Jul 15 |
| Snap beans | Sow outdoors | May 31 – Jun 24 |
| Sweet corn | Sow outdoors | May 31 – May 22 |
| Watermelon & cantaloupe | Sow outdoors | Jun 14 – Jul 15 |
| Okra | Sow outdoors | Jun 7 – Jun 30 |
| Peas | Sow outdoors (spring) | Apr 14 – May 30 |
| Potatoes | Plant outdoors (spring) | Apr 14 – Jun 14 |
| Onions | Start seeds indoors (spring) | Mar 3 – Mar 30 |
| Onions | Transplant outdoors (spring) | May 1 – May 30 |
| Broccoli | Start seeds indoors (spring) | Mar 27 – Apr 30 |
| Broccoli | Transplant outdoors (spring) | May 1 – May 30 |
| Broccoli | Start seeds indoors (fall) | May 12 – May 22 |
| Broccoli | Transplant outdoors (fall) | Jun 11 – Jun 22 |
| Cabbage | Start seeds indoors (spring) | Mar 17 – Apr 14 |
| Cabbage | Transplant outdoors (spring) | Apr 14 – May 15 |
| Cabbage | Start seeds indoors (fall) | May 2 – Jun 1 |
| Cabbage | Transplant outdoors (fall) | Jun 1 – Jul 2 |
| Leaf lettuce | Sow outdoors (spring) | Apr 14 – Jun 30 |
| Leaf lettuce | Sow outdoors (fall) | Jun 1 – Jul 18 |
| Spinach | Sow outdoors (spring) | Apr 7 – May 21 |
| Spinach | Sow outdoors (fall) | Jun 18 – Jul 23 |
| Radishes | Sow outdoors (spring) | Apr 14 – Jun 4 |
| Radishes | Sow outdoors (fall) | Jun 1 – Aug 2 |
| Kale | Sow outdoors (spring) | May 1 – May 21 |
| Kale | Sow outdoors (fall) | May 25 – Jul 2 |
| Carrots | Sow outdoors (spring) | May 15 – Jun 30 |
| Carrots | Sow outdoors (fall) | May 2 – Jun 17 |
| Garlic | Plant outdoors (fall) | Sep 1 – Oct 2 |
Where these dates come from
ZIP code 99744 is matched to the NOAA station Nenana Muni Ap, AK, 23.5 km away, at 360 ft elevation (155 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Nenana Muni Ap, AK (used) | 360 ft | May 15 | Sep 11 |
| Clear Sky, AK | 646 ft | May 24 | Sep 4 |
| Kobe Hill, AK | 800 ft | May 24 | Sep 2 |
| Healy, AK | 1,417 ft | May 27 | Sep 1 |
Frost dates near Anderson
- Clear, AK 99704 · last May 24, first Sep 4
- Nenana, AK 99760 · last May 15, first Sep 11
- Healy, AK 99743 · last May 27, first Sep 1
- Ester, AK 99725 · last May 15, first Sep 16
- Fairbanks, AK 99706 · last May 18, first Sep 6
- Minto, AK 99758 · last —, first —
- Denali National Park, AK 99755 · last May 25, first Sep 8
- Cantwell, AK 99729 · last —, first —
Frequently asked questions
- When is the last frost in Anderson, AK?
- For ZIP code 99744, the average last spring frost (32°F) is May 15, based on NOAA 1991-2020 climate normals for the Nenana Muni Ap, AK weather station. There is a 1-in-10 chance of a frost after May 29.
- When is the first frost in Anderson, AK?
- The average first fall frost (32°F) is September 11. There is a 1-in-10 chance of frost by August 27, so tender plants are at risk from that point on.
- How long is the growing season in 99744?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 117 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.