Frost dates for St. Paul, AK
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
June 4
typical year
Safe to plant
June 25
frost is over in 9 of 10 years
First fall frost
September 28
typical year
Growing season
114 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | May 7 – 21 | – |
| Spinach | – | Apr 23 – May 14 | Aug 3 – 17 |
| Lettuce | – | May 7 – 28 | Aug 3 – 17 |
| Radishes | – | May 7 – Jun 18 | Aug 17 – 31 |
| Onions | – | May 7 – 21 | – |
| Potatoes | – | May 14 – 28 | – |
| Carrots | – | May 14 – Jun 4 | Jul 6 – 20 |
| Beets | – | May 7 – 21 | Jul 20 – Aug 3 |
| Kale | Mar 26 – Apr 9 | May 7 – 21 | Jul 20 – Aug 3 |
| Broccoli | Mar 26 – Apr 9 | May 21 – Jun 4 | Jul 20 – Aug 3 |
| Cabbage | Mar 12 – 26 | May 7 – 21 | Jul 20 – Aug 3 |
| Garlic | – | – | Aug 17 – Sep 7 |
| Warm-season crops | |||
| Tomatoes | Apr 30 – May 14 | Jun 25 – Jul 9 | – |
| Peppers | Apr 23 – May 7 | Jul 2 – 16 | – |
| Cucumbers | – | Jun 25 – Jul 16 | – |
| Zucchini | – | Jun 25 – Jul 23 | – |
| Pumpkins | Season usually too short. Try a quick variety or row covers. | ||
| Green beans | – | Jun 25 – Jul 20 | – |
| Sweet corn | – | Jun 25 – Jul 23 | – |
| Basil | May 21 – Jun 4 | Jul 2 – 9 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | June 25 | June 4 | May 16 |
| Fall frost before | September 11 | September 28 | October 15 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around May 17 (June 6 in a late year), and the first one in fall around October 15.
Towns that use these dates
This is the nearest NOAA station with frost records for 1 town.
St. Paul
Where these dates come from
NOAA weather station ST PAUL ISLAND AP, AK US (USW00025713), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 3 miles:
99660
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.