Frost Dates for Mc Laughlin, SD

Elevation: 610 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 12
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 28

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 18
First Fall Frost September 23

Hard Freeze (28°F)

Last Spring Hard Freeze May 3
First Fall Hard Freeze October 5
45.81°N, 100.81°W © OpenStreetMap

Growing Season

139 Days May 12 to September 28

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 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

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
January24°14°4°
February28°18°7°
March42°30°19°
April56°43°30°
May68°55°42°
June78°66°53°
July85°72°58°
August84°70°55°
September74°60°45°
October57°45°32°
November41°30°19°
December29°19°9°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January3.0
February2.2
March3.1
April5.1
May6.3
June6.1
July6.5
August7.0
September6.3
October4.9
November2.6
December2.6

Sunrise / Sunset

Daylight Longest: 15h 32m · Shortest: 8h 28m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:34 AM4:26 PM8h 51m
February6:56 AM5:04 PM10h 07m
March6:12 AM5:48 PM11h 37m
April5:21 AM6:39 PM13h 19m
May4:38 AM7:22 PM14h 44m
June4:15 AM7:45 PM15h 31m
July4:24 AM7:36 PM15h 11m
August5:02 AM6:58 PM13h 57m
September5:51 AM6:09 PM12h 18m
October6:40 AM5:20 PM10h 40m
November7:24 AM4:36 PM9h 13m
December7:45 AM4:15 PM8h 29m

Nearby Stations

Mc Intosh 6 Se, SD May 9 - September 30 Mobridge 2nnw, SD May 3 - October 8 Pollock, SDMay 8 - September 30 Mobridge Muni AP, SD May 5 - October 4 Timber Lake, SD May 10 - September 30 Breien, NDMay 12 - September 24

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