Frost Dates for Susitna North, AK

Based on data from Talkeetna AP weather station, 13 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 16
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. September 16
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 22
First Fall Frost September 10

Hard Freeze (28°F)

Last Spring Hard Freeze May 5
First Fall Hard Freeze September 28
62.16°N, -149.85°W © OpenStreetMap

Growing Season

123 Days May 16 to September 16

USDA Hardiness Zone iHardiness 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 4a

Avg. annual minimum: −30 to −25°F (−34 to −32°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

0° 20° 40° 60°
14°
High: 22°F
Avg: 14°F
Low: 5°F
Jan
19°
High: 28°F
Avg: 19°F
Low: 9°F
Feb
24°
High: 35°F
Avg: 24°F
Low: 12°F
Mar
36°
High: 47°F
Avg: 36°F
Low: 26°F
Apr
48°
High: 59°F
Avg: 48°F
Low: 37°F
May
57°
High: 67°F
Avg: 57°F
Low: 47°F
Jun
60°
High: 69°F
Avg: 60°F
Low: 51°F
Jul
57°
High: 65°F
Avg: 57°F
Low: 48°F
Aug
48°
High: 56°F
Avg: 48°F
Low: 39°F
Sep
34°
High: 42°F
Avg: 34°F
Low: 27°F
Oct
21°
High: 28°F
Avg: 21°F
Low: 13°F
Nov
16°
High: 23°F
Avg: 16°F
Low: 8°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.4"
2.2"
2.17"
Jan
2.1"
2.10"
Feb
2.4"
2.35"
Mar
2.1"
2.10"
Apr
2.2"
2.17"
May
2.3"
2.30"
Jun
3.5"
3.48"
Jul
4.4"
4.44"
Aug
4.4"
4.44"
Sep
4.1"
4.06"
Oct
3.1"
3.07"
Nov
2.3"
2.27"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec5.5h8.5h11.5h14.5h17.5h19.5h18.5h15.5h12.5h9.5h6.5h4.5h
Jan: 9:12 AM – 2:48 PM · 5h 37m
Feb: 7:47 AM – 4:13 PM · 8h 26m
Mar: 6:22 AM – 5:38 PM · 11h 17m
Apr: 4:46 AM – 7:14 PM · 14h 27m
May: 3:18 AM – 8:42 PM · 17h 24m
Jun: 2:19 AM – 9:41 PM · 19h 22m
Jul: 2:45 AM – 9:15 PM · 18h 30m
Aug: 4:08 AM – 7:52 PM · 15h 43m
Sep: 5:43 AM – 6:17 PM · 12h 34m
Oct: 7:15 AM – 4:45 PM · 9h 30m
Nov: 8:46 AM – 3:14 PM · 6h 28m
Dec: 9:41 AM – 2:19 PM · 4h 37m
Daylight Longest: 19h 26m · Shortest: 4h 34m

Nearby Stations

Amber Lake, AK May 28 - September 13 Chulitna Rvr, AK Willow West, AK May 15 - September 18 Whites Crossing, AK May 29 - September 7 Skwentna, AKMay 23 - September 9 Little Su At Hatcher Pass Brg, AK May 18 - September 18

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