Mc Grath, AK frost dates
Last spring frostMay 13median date
First fall frostSep 13median date
Growing season123 daysfrost-free
Hardiness zone2bZone 2b
How Mc Grath compares
- In 8 years out of 10, the last spring frost in Mc Grath falls between May 4 and May 28, a 24-day window. The first fall frost falls between August 27 and September 27.
- The median last frost is 8 days earlier than the Alaska median of May 21.
- Its 123-day growing season is longer than 45% of the 165 Alaska places with a regular frost season (state median 124 days).
- The weather station records an average of 221 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 4 |
| 50% (median) | May 13 |
| 10% (safe for tender plants) | May 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | August 27 |
| 50% (median) | September 13 |
| 90% (late) | September 27 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Mc Grath, AK
Mc Grath, AK frost dates — last frost May 13, first frost Sep 13, zone 2b. whenisthelastfrost.com
Crop
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Start indoors: Feb 18 to Mar 4Transplant outside: Apr 15 to Apr 29
Start indoors: Mar 4 to Mar 18Transplant outside: May 27 to Jun 10
Start indoors: Mar 4 to Mar 18Transplant outside: May 27 to Jun 10
Start indoors: Mar 18 to Apr 1Transplant outside: May 20 to Jun 3
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 22 to May 6Sow outdoors: Apr 15 to May 20Plant for fall: Jul 19 to Aug 16
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 15 to Apr 29Sow outdoors: Apr 15 to Apr 29Plant for fall: Jul 5 to Jul 26
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 29 to May 13Plant for fall: Jun 7 to Jun 28
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 22 to May 6Plant for fall: Jun 7 to Jun 28
Start indoors: Mar 18 to Apr 1Transplant outside: Apr 29 to May 13Plant for fall: Jun 7 to Jun 28
Start indoors: Apr 1 to Apr 15Transplant outside: Jun 3 to Jun 17Sow outdoors: Jun 3 to Jun 17
Start indoors: Apr 1 to Apr 15Transplant outside: May 20 to Jun 3
Sow outdoors: Apr 1 to Apr 22Plant for fall: Jun 21 to Jul 12
Sow outdoors: Apr 1 to Apr 22Plant for fall: Jul 19 to Aug 9
Sow outdoors: Apr 8 to May 20Plant for fall: Aug 2 to Aug 23
Start indoors: Apr 15 to Apr 22Transplant outside: May 27 to Jun 3Sow outdoors: May 20 to Jun 3Plant for fall: Jun 28 to Jul 12
Start indoors: Apr 15 to Apr 22Sow outdoors: May 20 to Jun 3Plant for fall: Jul 5 to Jul 19
Start indoors: Apr 15 to Apr 22Sow outdoors: May 20 to Jun 3
Start indoors: Apr 15 to Apr 22Transplant outside: May 27 to Jun 10
Sow outdoors: Apr 22 to May 20Plant for fall: Jun 21 to Jul 5
Sow outdoors: Apr 22 to May 20Plant for fall: Jul 5 to Jul 19
Sow outdoors: Apr 22 to May 13
Sow outdoors: Apr 29 to May 27Plant for fall: Jul 5 to Jul 19
Sow outdoors: Apr 29 to May 20Plant for fall: Jul 19 to Aug 9
Sow outdoors: May 20 to Jun 10Plant for fall: Jun 28 to Jul 12
Sow outdoors: May 20 to Jun 3
Transplant outside: May 27 to Jun 17
Plant for fall: Aug 30 to Oct 4
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Mc Grath, AK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 18 – Mar 4 | Apr 15 – Apr 29 | — | — |
| Peppers | Mar 4 – Mar 18 | May 27 – Jun 10 | — | — |
| Eggplant | Mar 4 – Mar 18 | May 27 – Jun 10 | — | — |
| Tomatoes | Mar 18 – Apr 1 | May 20 – Jun 3 | — | — |
| Lettuce | Mar 18 – Apr 1 | Apr 22 – May 6 | Apr 15 – May 20 | Jul 19 – Aug 16 |
| Kale | Mar 18 – Apr 1 | Apr 15 – Apr 29 | Apr 15 – Apr 29 | Jul 5 – Jul 26 |
| Broccoli | Mar 18 – Apr 1 | Apr 29 – May 13 | — | Jun 7 – Jun 28 |
| Cabbage | Mar 18 – Apr 1 | Apr 22 – May 6 | — | Jun 7 – Jun 28 |
| Cauliflower | Mar 18 – Apr 1 | Apr 29 – May 13 | — | Jun 7 – Jun 28 |
| Okra | Apr 1 – Apr 15 | Jun 3 – Jun 17 | Jun 3 – Jun 17 | — |
| Basil | Apr 1 – Apr 15 | May 20 – Jun 3 | — | — |
| Peas | — | — | Apr 1 – Apr 22 | Jun 21 – Jul 12 |
| Spinach | — | — | Apr 1 – Apr 22 | Jul 19 – Aug 9 |
| Radishes | — | — | Apr 8 – May 20 | Aug 2 – Aug 23 |
| Cucumbers | Apr 15 – Apr 22 | May 27 – Jun 3 | May 20 – Jun 3 | Jun 28 – Jul 12 |
| Zucchini & Summer Squash | Apr 15 – Apr 22 | — | May 20 – Jun 3 | Jul 5 – Jul 19 |
| Winter Squash & Pumpkins | Apr 15 – Apr 22 | — | May 20 – Jun 3 | — |
| Melons & Watermelon | Apr 15 – Apr 22 | May 27 – Jun 10 | — | — |
| Carrots | — | — | Apr 22 – May 20 | Jun 21 – Jul 5 |
| Beets | — | — | Apr 22 – May 20 | Jul 5 – Jul 19 |
| Potatoes | — | — | Apr 22 – May 13 | — |
| Swiss Chard | — | — | Apr 29 – May 27 | Jul 5 – Jul 19 |
| Cilantro | — | — | Apr 29 – May 20 | Jul 19 – Aug 9 |
| Green Beans | — | — | May 20 – Jun 10 | Jun 28 – Jul 12 |
| Sweet Corn | — | — | May 20 – Jun 3 | — |
| Sweet Potatoes | — | May 27 – Jun 17 | — | — |
| Garlic | — | — | — | Aug 30 – Oct 4 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Mcgrath Ap, AK weather station, 2 km away (elevation 335 ft (102 m)).
Frost dates near Mc Grath
- Takotna May 13 · Sep 13
- Nikolai May 13 · Sep 13
- Lake Minchumina May 13 · Sep 17
- Ruby May 18 · Sep 8
- Galena May 18 · Sep 8
- Kaltag May 25 · Sep 3
- Nulato May 25 · Sep 3
- Koyukuk May 18 · Sep 8
- Skwentna May 23 · Sep 9
- Unalakleet May 25 · Sep 3
Frequently asked questions
When is the last frost in Mc Grath, AK?
The median last spring frost in Mc Grath, AK is May 13. There is still about a 10% chance of frost after May 28, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Mc Grath, AK?
The median first fall frost is September 13, with about a 10% chance of frost before August 27.
How long is the growing season in Mc Grath, AK?
About 123 days between the median last spring frost and first fall frost.
What planting zone is Mc Grath, AK?
Mc Grath, AK is in USDA hardiness zone 2b.