Frost Dates for Wibaux 2 E, MT

Elevation: 822 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 27
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 16

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 1
First Fall Frost September 10

Hard Freeze (28°F)

Last Spring Hard Freeze May 17
First Fall Hard Freeze September 26
46.99°N, 104.16°W © OpenStreetMap

Growing Season

112 Days May 27 to September 16

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.
BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

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
January27°16°5°
February30°19°8°
March43°30°18°
April55°41°28°
May65°52°38°
June75°61°48°
July84°69°53°
August84°67°51°
September73°57°42°
October56°43°30°
November41°29°18°
December30°19°9°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.7
February1.5
March2.2
April3.8
May5.5
June5.4
July5.3
August5.5
September4.9
October3.7
November2.1
December1.7

Sunrise / Sunset

Daylight Longest: 15h 42m · Shortest: 8h 18m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:39 AM4:21 PM8h 43m
February6:59 AM5:01 PM10h 03m
March6:12 AM5:48 PM11h 36m
April5:19 AM6:41 PM13h 22m
May4:34 AM7:26 PM14h 51m
June4:10 AM7:50 PM15h 40m
July4:20 AM7:40 PM15h 20m
August4:59 AM7:01 PM14h 02m
September5:50 AM6:10 PM12h 19m
October6:42 AM5:18 PM10h 36m
November7:27 AM4:33 PM9h 05m
December7:50 AM4:10 PM8h 20m

Nearby Stations

Beach, NDMay 16 - September 26 Carlyle 13 Nw, MT May 18 - September 29 Trotters 3 Sse, ND May 15 - September 25 Glendive, MTMay 3 - October 4 Medora, NDMay 19 - September 20 Savage, MTMay 12 - September 25

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