Frost Dates for Huron, SD

Based on data from Huron Rgnl AP weather station, 2 miles away

Elevation: 1280 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 6
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. October 2

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 12
First Fall Frost September 27

Hard Freeze (28°F)

Last Spring Hard Freeze April 27
First Fall Hard Freeze October 8
44.36°N, 98.21°W © OpenStreetMap

Growing Season

149 Days May 6 to October 2

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
January26°16°6°
February31°21°10°
March44°33°22°
April58°46°34°
May70°58°46°
June80°68°57°
July86°74°62°
August83°71°59°
September76°63°50°
October60°48°36°
November44°33°22°
December30°21°11°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January1.4
February1.4
March2.2
April3.6
May3.9
June4.2
July4.9
August4.4
September4.3
October2.8
November1.5
December1.5

Sunrise / Sunset

Daylight Central Time (CT) Longest: 15h 21m · Shortest: 8h 39m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January8:12 AM5:13 PM9h 01m
February7:41 AM5:54 PM10h 13m
March7:54 AM7:31 PM11h 38m
April6:56 AM8:11 PM13h 15m
May6:11 AM8:47 PM14h 36m
June5:53 AM9:13 PM15h 20m
July6:08 AM9:09 PM15h 02m
August6:41 AM8:33 PM13h 51m
September7:19 AM7:36 PM12h 17m
October7:56 AM6:40 PM10h 44m
November7:38 AM4:59 PM9h 21m
December8:09 AM4:49 PM8h 40m

Nearby Stations

Forestburg 4 Nne, SD May 9 - September 28 Wessington Springs, SD May 2 - October 8 De Smet, SDMay 5 - October 4 Redfield, SDMay 8 - October 1 Miller, SDMay 3 - October 3 Clark No2, SDMay 5 - October 5

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