Frost Dates for Kennebec, SD
Elevation: 512 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 17
First Fall Frost
September 23
Hard Freeze (28°F)
Last Spring Hard Freeze
May 3
First Fall Hard Freeze
October 5
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
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dwa
Hot-Summer Continental (Dry Winter)
Hot, wet summers and cold, dry winters. Monsoon influence brings most rain in summer. Good for warm-season crops during the rainy season; winters are harsh but dry.
Temperature
0°
30°
60°
90°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Hard Frost (28°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 32° | 20° | 9° |
| February | 36° | 25° | 13° |
| March | 49° | 36° | 23° |
| April | 62° | 47° | 33° |
| May | 72° | 59° | 45° |
| June | 82° | 69° | 56° |
| July | 90° | 76° | 61° |
| August | 88° | 74° | 59° |
| September | 80° | 65° | 50° |
| October | 64° | 50° | 36° |
| November | 47° | 35° | 22° |
| December | 34° | 23° | 13° |
Precipitation
0"
2"
4"
5.3"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 1.9 |
| February | 1.9 |
| March | 3.0 |
| April | 4.1 |
| May | 5.3 |
| June | 5.0 |
| July | 4.9 |
| August | 4.8 |
| September | 4.1 |
| October | 3.2 |
| November | 2.5 |
| December | 1.9 |
Sunrise / Sunset
Daylight
Longest: 15h 17m · Shortest: 8h 43m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:28 AM | 4:32 PM | 9h 04m |
| February | 6:53 AM | 5:07 PM | 10h 15m |
| March | 6:11 AM | 5:49 PM | 11h 38m |
| April | 5:23 AM | 6:37 PM | 13h 13m |
| May | 4:44 AM | 7:16 PM | 14h 33m |
| June | 4:22 AM | 7:38 PM | 15h 16m |
| July | 4:31 AM | 7:29 PM | 14h 58m |
| August | 5:05 AM | 6:55 PM | 13h 49m |
| September | 5:51 AM | 6:09 PM | 12h 17m |
| October | 6:37 AM | 5:23 PM | 10h 45m |
| November | 7:18 AM | 4:42 PM | 9h 24m |
| December | 7:38 AM | 4:22 PM | 8h 44m |
Nearby Stations
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