Frost Dates for Big River Lakes, AK

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 7
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. October 7
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 13
First Fall Frost October 1

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze April 23
First Fall Hard Freeze October 19
60.81°N, -152.30°W © OpenStreetMap

Growing Season

153 Days May 7 to October 7

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 5b

Learn more

Temperature

10° 30° 50° 70°
19°
High: 25°
Avg: 19°
Low: 13°
Jan
24°
High: 31°
Avg: 24°
Low: 18°
Feb
28°
High: 35°
Avg: 28°
Low: 20°
Mar
38°
High: 46°
Avg: 38°
Low: 31°
Apr
49°
High: 59°
Avg: 49°
Low: 39°
May
57°
High: 67°
Avg: 57°
Low: 47°
Jun
60°
High: 69°
Avg: 60°
Low: 51°
Jul
59°
High: 67°
Avg: 59°
Low: 50°
Aug
51°
High: 58°
Avg: 51°
Low: 44°
Sep
40°
High: 46°
Avg: 40°
Low: 34°
Oct
27°
High: 32°
Avg: 27°
Low: 22°
Nov
22°
High: 27°
Avg: 22°
Low: 17°
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 3" 6" 9" 11.2"
8.5"
8.47"
Jan
6.7"
6.74"
Feb
6.2"
6.24"
Mar
4.9"
4.91"
Apr
5.0"
4.96"
May
4.8"
4.82"
Jun
6.7"
6.71"
Jul
8.7"
8.69"
Aug
11.2"
11.20"
Sep
9.5"
9.46"
Oct
7.9"
7.92"
Nov
8.2"
8.23"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec6h9h11h14h17h19h18h15h13h10h7h5h
Jan: 8:57 AM – 3:03 PM · 6h 07m
Feb: 7:40 AM – 4:20 PM · 8h 40m
Mar: 6:20 AM – 5:40 PM · 11h 20m
Apr: 4:51 AM – 7:09 PM · 14h 18m
May: 3:30 AM – 8:30 PM · 17h 00m
Jun: 2:38 AM – 9:22 PM · 18h 44m
Jul: 3:00 AM – 8:60 PM · 17h 59m
Aug: 4:16 AM – 7:44 PM · 15h 28m
Sep: 5:44 AM – 6:16 PM · 12h 32m
Oct: 7:11 AM – 4:49 PM · 9h 39m
Nov: 8:34 AM – 3:26 PM · 6h 53m
Dec: 9:22 AM – 2:38 PM · 5h 15m
Daylight Longest: 18h 48m · Shortest: 5h 13m

Nearby Stations

Kenai 9n, AKMay 18 - September 22 Kenai Muni AP, AK May 24 - September 12 Soldotna 5ssw, AK June 11 - September 1 Homer 8 Nw, AK May 16 - September 30 Hayes River, AK June 2 - September 8 Homer 9 E, AK May 27 - September 22

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