Frost Dates for North Pole, AK 99705

Last spring frost May 25 · First fall frost August 30 · 97 frost-free days · USDA Zone 2a

Frost probability for 99705

Frost10%50%90%
Spring (last frost)June 7May 25May 12
Fall (first frost)August 17August 30September 13

Dates come from NOAA 1971–2000 freeze probabilities at the nearest reporting station (29.0 km away); the 50% date is the median year.

Month by month in North Pole

MonthWhat to do
JanuaryPlan your garden layout and order seeds. Research varieties suited to your frost dates.
FebruaryStart the slowest-growing crops indoors: onions, leeks, and celery (10–12 weeks before last frost).
MarchStart peppers and eggplant indoors 8–10 weeks before your last frost (around May 25). Start tomatoes about two weeks later, 6–8 weeks before last frost.
AprilStart herbs, basil, and squash indoors (4–6 weeks before frost). Direct sow peas, spinach, and lettuce if soil is workable.
MayLast frost around May 25. Transplant cold-hardy crops (broccoli, kale, cabbage). Harden off tomato and pepper seedlings.
JuneFrost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini.
JulyFirst fall frost approaching (around August 30). Transplant fall brassicas. Sow spinach, arugula, and radishes.
AugustFirst frost around August 30. Harvest tomatoes and peppers before frost. Cover cold-hardy crops with row covers to extend the season.
SeptemberHarvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year.
OctoberClean up spent plants. Add compost to beds. Rest, review, and plan next year's garden.
NovemberClean up spent plants. Add compost to beds. Rest, review, and plan next year's garden.
DecemberClean up spent plants. Add compost to beds. Rest, review, and plan next year's garden.

What grows in a 97-day season

Frequently Asked Questions

What is the last frost date for North Pole, AK (ZIP 99705)?

The median last spring frost date for North Pole, AK (ZIP code 99705) is around May 25. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area.

What is the first fall frost date in North Pole, AK?

The median first fall frost date for North Pole, AK is around August 30. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses.

How long is the growing season in North Pole, AK?

The frost-free growing season in North Pole is about 97 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side.

What USDA hardiness zone is North Pole, AK?

Based on frost date patterns, North Pole falls approximately in 2a. USDA hardiness zones are determined by average annual minimum winter temperatures and guide both plant selection and planting timing for your location.

When should I start tomatoes indoors in North Pole, AK?

Start tomato seeds indoors 6–8 weeks before your last frost date (around May 25). For North Pole, that's roughly March 30 to April 13. Transplant outdoors 1–2 weeks after your last frost.

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