Frost Dates for Kodiak, AK 99615
Last spring frost May 18 · First fall frost September 24 · 129 frost-free days · USDA Zone 7a
ZIP 99615 has about 12,200 people.
Moderate season: 129 frost-free days. Spring frost risk spans May 2–June 3 (32 days). Fall frost risk spans September 12–October 5 (23 days).
Frost probability for 99615
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | June 3 | May 18 | May 2 |
| Fall (first frost) | September 12 | September 24 | October 5 |
Dates come from NOAA 1971–2000 freeze probabilities at KITOI BAY (91.1 km away); the 50% date is the median year.
Which crops fit a 129-day season in Kodiak
In Kodiak (129 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 16 get two plantings, 2 need an indoor start, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Apr 13 | Jun 1–Jun 8 | 87 | fits: 80 days to maturity, 87 available after Jun 1. | — |
| Pepper | Apr 6 | Jun 1–Jun 8 | 87 | fits: 75 days to maturity, 87 available after Jun 1. | — |
| Lettuce | Mar 23 | Apr 20–Apr 27 | 164 | two-plantings: Plant Apr 20 and again by Aug 3; both mature before Oct 1. | Aug 3 |
| Carrots | — | Apr 27–May 4 | 171 | fits: 70 days to maturity, 171 available after Apr 27. | Jul 23 |
| Cucumber | Apr 27 | Jun 1–Jun 8 | 101 | fits: 60 days to maturity, 101 available after Jun 1. | Jun 28 |
| Beans | — | May 25–Jun 8 | 115 | fits: 60 days to maturity, 115 available after May 25. | Jul 5 |
| Peas | — | Mar 23–Jun 1 | 192 | fits: 65 days to maturity, 192 available after Mar 23. | Jul 14 |
| Zucchini | May 4 | Jun 1–Jun 8 | 101 | fits: 55 days to maturity, 101 available after Jun 1. | Jul 3 |
| Onion | Feb 23 | Apr 20–May 4 | 164 | fits: 100 days to maturity, 164 available after Apr 20. | — |
| Spinach | — | Mar 23–May 11 | 206 | two-plantings: Plant Mar 23 and again by Aug 22; both mature before Oct 15. | Aug 22 |
| Kale | Mar 9 | Apr 20–May 4 | 178 | two-plantings: Plant Apr 20 and again by Aug 7; both mature before Oct 15. | Aug 7 |
| Broccoli | Mar 23 | Apr 20–May 4 | 164 | fits: 80 days to maturity, 164 available after Apr 20. | Jun 29 |
| Cabbage | Mar 23 | Apr 20–May 4 | 178 | fits: 70 days to maturity, 178 available after Apr 20. | Jul 23 |
| Radish | — | Mar 23–Jun 15 | 192 | two-plantings: Plant Mar 23 and again by Aug 23; both mature before Oct 1. | Aug 23 |
| Beets | — | Mar 23–Jun 15 | 192 | two-plantings: Plant Mar 23 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Potatoes | — | May 4–May 11 | 150 | fits: 90 days to maturity, 150 available after May 4. | — |
| Garlic | — | Sep 24 | 234 | overwinter: Plant Sep 24 to Oct 15; harvest the following summer. | Oct 15 |
| Strawberry | — | Apr 13–Jun 8 | 185 | perennial: A perennial: plant Apr 13; it fruits from the following year and keeps producing for several years. | — |
| Corn | Apr 20 | May 25–Jun 1 | 101 | fits: 75 days to maturity, 101 available after May 25. | Jun 6 |
| Pumpkin | May 4 | Jun 1–Jun 1 | 94 | head-start: Even planted out Jun 1, the outdoor season is about 6 days short; choose an early variety or grow under cover. | — |
| Cauliflower | Apr 6 | May 11–May 25 | 143 | fits: 75 days to maturity, 143 available after May 11. | Jul 4 |
| Swiss Chard | Mar 23 | May 4–May 4 | 150 | two-plantings: Plant May 4 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Arugula | — | Mar 23–Jun 15 | 206 | two-plantings: Plant Mar 23 and again by Aug 22; both mature before Oct 15. | Aug 22 |
| Brussel Sprouts | Mar 23 | Apr 20–May 4 | 178 | fits: 100 days to maturity, 178 available after Apr 20. | Jun 23 |
| Butternut Squash | May 4 | Jun 1–Jun 8 | 94 | head-start: Even planted out Jun 1, the outdoor season is about 6 days short; choose an early variety or grow under cover. | — |
| Eggplant | Mar 30 | Jun 1–Jun 8 | 87 | fits: 70 days to maturity, 87 available after Jun 1. | Jun 4 |
| Okra | Apr 20 | May 25–Jun 1 | 108 | fits: 55 days to maturity, 108 available after May 25. | Jul 3 |
| Basil | Apr 13 | Jun 8–Jun 8 | 94 | fits: 60 days to maturity, 94 available after Jun 8. | Jun 28 |
| Cilantro | — | Apr 20–May 11 | 164 | two-plantings: Plant Apr 20 and again by Jul 29; both mature before Oct 1. | Jul 29 |
| Parsley | Mar 9 | May 25–Jun 1 | 129 | fits: 70 days to maturity, 129 available after May 25. | Jul 9 |
| Celery | Mar 9 | May 25–Jun 8 | 129 | fits: 120 days to maturity, 129 available after May 25. | — |
| Scallions | Mar 9 | Apr 20–May 4 | 178 | two-plantings: Plant Apr 20 and again by Aug 2; both mature before Oct 15. | Aug 2 |
| Turnip | — | Apr 20–May 4 | 178 | two-plantings: Plant Apr 20 and again by Aug 12; both mature before Oct 15. | Aug 12 |
| Kohlrabi | — | Apr 6–Apr 20 | 192 | two-plantings: Plant Apr 6 and again by Aug 7; both mature before Oct 15. | Aug 7 |
| Bok Choy | Apr 20 | May 11–May 18 | 143 | two-plantings: Plant May 11 and again by Aug 3; both mature before Oct 1. | Aug 3 |
| Collards | Mar 9 | Apr 20–May 4 | 178 | two-plantings: Plant Apr 20 and again by Aug 2; both mature before Oct 15. | Aug 2 |
| Cantaloupe | May 4 | Jun 1–Jun 8 | 87 | fits: 85 days to maturity, 87 available after Jun 1. | — |
| Chives | Feb 23 | May 25–Jun 1 | 143 | fits: 90 days to maturity, 143 available after May 25. | — |
| Dill | — | Mar 23–Jun 15 | 192 | two-plantings: Plant Mar 23 and again by Jul 24; both mature before Oct 1. | Jul 24 |
| Oregano | Mar 9 | May 25–Jun 1 | 143 | fits: 80 days to maturity, 143 available after May 25. | — |
| Rosemary | Feb 23 | May 25–Jun 1 | 129 | fits: 80 days to maturity, 129 available after May 25. | — |
| Sage | Mar 23 | May 25–Jun 1 | 143 | fits: 75 days to maturity, 143 available after May 25. | — |
| Thyme | Mar 9 | May 25–Jun 1 | 143 | fits: 90 days to maturity, 143 available after May 25. | — |
| Calendula | Apr 6 | May 4–May 18 | 150 | two-plantings: Plant May 4 and again by Jul 29; both mature before Oct 1. | Jul 29 |
| Cosmos | Apr 20 | May 18–Jun 1 | 115 | fits: 60 days to maturity, 115 available after May 18. | Jun 28 |
| Lavender | Feb 23 | May 18–Jun 1 | 150 | fits: 90 days to maturity, 150 available after May 18. | — |
| Marigolds | Apr 6 | May 18–May 25 | 115 | two-plantings: Plant May 18 and again by Jul 8; both mature before Sep 10. | Jul 8 |
| Melons | May 4 | Jun 1–Jun 8 | 87 | fits: 85 days to maturity, 87 available after Jun 1. | — |
| Mint | — | May 18–Jun 1 | 150 | fits: 90 days to maturity, 150 available after May 18. | — |
| Nasturtiums | Apr 20 | May 18–May 25 | 115 | fits: 55 days to maturity, 115 available after May 18. | Jul 3 |
| Pole Beans | — | May 25–Jun 8 | 108 | fits: 65 days to maturity, 108 available after May 25. | Jun 23 |
| Spaghetti Squash | May 4 | Jun 1–Jun 8 | 94 | fits: 90 days to maturity, 94 available after Jun 1. | — |
| Sunflowers | — | May 18–Jun 1 | 115 | fits: 70 days to maturity, 115 available after May 18. | Jun 18 |
| Tomatillos | Mar 23 | May 25–Jun 1 | 94 | fits: 75 days to maturity, 94 available after May 25. | May 30 |
| Watermelon | May 4 | May 25–Jun 1 | 94 | fits: 80 days to maturity, 94 available after May 25. | — |
| Yellow Squash | May 4 | Jun 1–Jun 8 | 101 | fits: 55 days to maturity, 101 available after Jun 1. | Jul 3 |
| Zinnias | Apr 20 | May 18–Jun 1 | 115 | fits: 60 days to maturity, 115 available after May 18. | Jun 28 |
Month by month in Kodiak
| Month | What to do |
|---|---|
| January | Plan your garden layout and order seeds. Research varieties suited to your frost dates. |
| February | Start indoors: Chives (Feb 23), Lavender (Feb 23), Onion (Feb 23), Rosemary (Feb 23). |
| March | Start indoors: Celery (Mar 9), Collards (Mar 9), Kale (Mar 9), Oregano (Mar 9), Parsley (Mar 9), Scallions (Mar 9), +9 more. Direct sow from: Arugula (Mar 23), Beets (Mar 23), Dill (Mar 23), Peas (Mar 23), Radish (Mar 23), Spinach (Mar 23). |
| April | Start indoors: Calendula (Apr 6), Cauliflower (Apr 6), Marigolds (Apr 6), Pepper (Apr 6), Basil (Apr 13), Tomato (Apr 13), +7 more. Direct sow from: Kohlrabi (Apr 6), Cilantro (Apr 20), Turnip (Apr 20), Carrots (Apr 27). Transplant from: Broccoli (Apr 20), Brussel Sprouts (Apr 20), Cabbage (Apr 20), Collards (Apr 20), Kale (Apr 20), Lettuce (Apr 20), +2 more. Plant: Strawberry (Apr 13). |
| May | Start indoors: Butternut Squash (May 4), Cantaloupe (May 4), Melons (May 4), Pumpkin (May 4), Spaghetti Squash (May 4), Watermelon (May 4), +2 more. Direct sow from: Potatoes (May 4), Sunflowers (May 18), Beans (May 25), Pole Beans (May 25). Transplant from: Calendula (May 4), Swiss Chard (May 4), Bok Choy (May 11), Cauliflower (May 11), Cosmos (May 18), Lavender (May 18), +15 more. Last frost around May 18. Last sowing dates: Tomatillos (May 30). |
| June | Transplant from: Butternut Squash (Jun 1), Cantaloupe (Jun 1), Cucumber (Jun 1), Eggplant (Jun 1), Melons (Jun 1), Pepper (Jun 1), +6 more. Last sowing dates: Eggplant (Jun 4), Corn (Jun 6), Sunflowers (Jun 18), Brussel Sprouts (Jun 23), Pole Beans (Jun 23), Basil (Jun 28), +4 more. |
| July | Last sowing dates: Nasturtiums (Jul 3), Okra (Jul 3), Yellow Squash (Jul 3), Zucchini (Jul 3), Cauliflower (Jul 4), Beans (Jul 5), +10 more. |
| August | Last sowing dates: Collards (Aug 2), Scallions (Aug 2), Bok Choy (Aug 3), Lettuce (Aug 3), Kale (Aug 7), Kohlrabi (Aug 7), +4 more. |
| September | Direct sow from: Garlic (Sep 24). First frost around September 24. |
| October | Last sowing dates: Garlic (Oct 15). |
| November | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Kodiak, AK (ZIP 99615)?
The median last spring frost date for Kodiak, AK (ZIP code 99615) is around May 18. 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. One year in ten frost ends before May 2; one in ten it runs past June 3.
What is the first fall frost date in Kodiak, AK?
The median first fall frost date for Kodiak, AK is around September 24. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around September 12 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Kodiak, AK?
The frost-free growing season in Kodiak is about 129 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. In Kodiak (129 frost-free days, a moderate season), 37 of 56 planner crops fit outright, 16 get two plantings, 2 need an indoor start, 1 crop is perennial.
What USDA hardiness zone is Kodiak, AK?
Kodiak, AK is in USDA hardiness zone 7a (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Kodiak, AK?
Start tomatoes indoors Apr 13 and plant out Jun 1 in Kodiak. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Kodiak?
Two: plant Apr 20 and again by Aug 3; both mature before Oct 1.
When do I plant garlic in Kodiak?
Sep 24 to Oct 15; it overwinters and is ready the following summer.
Can I grow Butternut Squash in Kodiak?
Yes, with help. Even planted out Jun 1, the outdoor season is about 6 days short; choose an early variety or grow under cover.
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