Frost Dates for St George Island AP, AK
Elevation: 38 m
Frost Dates
Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide.
May 31
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date.
October 5
30% Probability
Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost
June 7
First Fall Frost
September 30
Hard Freeze (28°F)
Last Spring Hard Freeze
May 9
First Fall Hard Freeze
October 24
Growing Season
127 Days
May 31 to October 5
USDA Hardiness Zone
Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.Zone 7a
Avg. annual minimum: 0 to 5°F
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
ET
Tundra
No true summer — the warmest month averages below 10°C (50°F). Growing is limited to hardy greens, root crops, and cold-frames during the brief warm period. Permafrost restricts root depth.
Temperature
20°
30°
40°
50°
60°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Hard Frost (28°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 30° | 27° | 23° |
| February | 32° | 28° | 24° |
| March | 31° | 27° | 23° |
| April | 35° | 32° | 28° |
| May | 42° | 38° | 34° |
| June | 47° | 43° | 39° |
| July | 51° | 48° | 44° |
| August | 52° | 49° | 46° |
| September | 50° | 46° | 42° |
| October | 43° | 40° | 36° |
| November | 38° | 34° | 30° |
| December | 34° | 30° | 26° |
Precipitation
0"
1"
1.9"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 1.2 |
| February | 1.1 |
| March | 1.0 |
| April | 1.1 |
| May | 1.4 |
| June | 1.5 |
| July | 1.6 |
| August | 1.7 |
| September | 1.8 |
| October | 1.9 |
| November | 1.7 |
| December | 1.4 |
Sunrise / Sunset
Daylight
Longest: 17h 29m · Shortest: 6h 31m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 8:25 AM | 3:35 PM | 7h 11m |
| February | 7:24 AM | 4:36 PM | 9h 12m |
| March | 6:17 AM | 5:43 PM | 11h 26m |
| April | 5:02 AM | 6:58 PM | 13h 57m |
| May | 3:56 AM | 8:04 PM | 16h 09m |
| June | 3:17 AM | 8:43 PM | 17h 27m |
| July | 3:33 AM | 8:27 PM | 16h 54m |
| August | 4:33 AM | 7:27 PM | 14h 55m |
| September | 5:47 AM | 6:13 PM | 12h 27m |
| October | 6:59 AM | 5:01 PM | 10h 01m |
| November | 8:07 AM | 3:53 PM | 7h 46m |
| December | 8:43 AM | 3:17 PM | 6h 33m |
Nearby Stations
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