Frost Dates for Clear Sky, AK
Elevation: 197 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 24
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.
September 4
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
May 30
First Fall Frost
August 31
Hard Freeze (28°F)
Last Spring Hard Freeze
May 11
First Fall Hard Freeze
September 15
Growing Season
103 Days
May 24 to September 4
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 1b
Avg. annual minimum: −55 to −50°F
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dsb
Warm-Summer Continental (Dry Summer)
Warm, dry summers and cold, snowy winters. Common in mountain regions. Moderate growing season with irrigation needs in summer.
Temperature
-20°
10°
40°
70°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Hard Frost (28°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 1° | -8° | -17° |
| February | 13° | 1° | -10° |
| March | 25° | 11° | -2° |
| April | 45° | 32° | 18° |
| May | 62° | 48° | 35° |
| June | 72° | 59° | 46° |
| July | 73° | 62° | 50° |
| August | 66° | 56° | 45° |
| September | 54° | 44° | 35° |
| October | 33° | 25° | 17° |
| November | 11° | 2° | -6° |
| December | 6° | -4° | -14° |
Precipitation
0"
1"
2"
3"
4.0"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 1.2 |
| February | 1.2 |
| March | 1.4 |
| April | 1.8 |
| May | 2.3 |
| June | 2.8 |
| July | 3.5 |
| August | 4.0 |
| September | 2.7 |
| October | 1.6 |
| November | 1.2 |
| December | 1.0 |
Sunrise / Sunset
Daylight
Longest: 20h 32m · Shortest: 3h 28m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 9:35 AM | 2:25 PM | 4h 50m |
| February | 7:57 AM | 4:03 PM | 8h 06m |
| March | 6:23 AM | 5:37 PM | 11h 13m |
| April | 4:40 AM | 7:20 PM | 14h 41m |
| May | 3:01 AM | 8:59 PM | 17h 59m |
| June | 1:47 AM | 10:13 PM | 20h 26m |
| July | 2:21 AM | 9:39 PM | 19h 18m |
| August | 3:58 AM | 8:02 PM | 16h 05m |
| September | 5:42 AM | 6:18 PM | 12h 37m |
| October | 7:22 AM | 4:38 PM | 9h 16m |
| November | 9:04 AM | 2:56 PM | 5h 52m |
| December | 10:14 AM | 1:46 PM | 3h 33m |
Nearby Stations
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