Frost Dates for Ridgeway, AK

Based on data from Kenai Muni AP weather station, 6 miles away

Elevation: 167 ft

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 12

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 29
First Fall Frost September 4

Hard Freeze (28°F)

Last Spring Hard Freeze May 5
First Fall Hard Freeze September 25
60.53°N, 151.09°W © OpenStreetMap

Growing Season

111 Days May 24 to September 12

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 4a

Avg. annual minimum: −30 to −25°F

Learn more

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.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January22°15°7°
February28°20°12°
March33°24°14°
April44°36°28°
May55°45°36°
June60°52°44°
July63°56°49°
August63°55°47°
September56°48°40°
October43°36°29°
November30°23°16°
December25°18°11°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.6
February1.2
March1.2
April1.5
May1.6
June1.9
July2.7
August3.6
September3.5
October3.0
November2.1
December1.6

Sunrise / Sunset

Daylight Alaska Time (AKT) Longest: 18h 42m · Shortest: 5h 18m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Alaska Time (AKT))
Month Sunrise Sunset Daylight
January10:09 AM4:20 PM6h 11m
February8:59 AM5:40 PM8h 42m
March8:35 AM7:55 PM11h 20m
April6:57 AM9:14 PM14h 17m
May5:33 AM10:30 PM16h 57m
June4:46 AM11:24 PM18h 39m
July5:13 AM11:08 PM17h 55m
August6:26 AM9:52 PM15h 26m
September7:44 AM8:15 PM12h 31m
October8:60 AM6:40 PM9h 40m
November9:22 AM4:18 PM6h 56m
December10:20 AM3:41 PM5h 21m

Nearby Stations

Kenai 9n, AKMay 18 - September 22 Soldotna 5ssw, AK June 11 - September 1 Sterling 6sw, AK May 20 - September 21 Kenai 29 Ene, AK June 1 - September 8 Big River Lakes, AK May 7 - October 7 Anchorage Intl AP, AK May 5 - October 1

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