Frost Dates for Gann Valley 3 Nne, SD
Elevation: 502 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 7
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 1
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 13
First Fall Frost
September 27
Hard Freeze (28°F)
Last Spring Hard Freeze
April 30
First Fall Hard Freeze
October 8
Growing Season
147 Days
May 7 to October 1
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
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 | 27° | 15° | 4° |
| February | 31° | 20° | 9° |
| March | 45° | 32° | 19° |
| April | 58° | 44° | 31° |
| May | 70° | 57° | 44° |
| June | 80° | 68° | 56° |
| July | 87° | 74° | 61° |
| August | 85° | 72° | 58° |
| September | 77° | 62° | 48° |
| October | 61° | 47° | 32° |
| November | 45° | 32° | 20° |
| December | 31° | 20° | 10° |
Precipitation
0"
2"
4"
4.9"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 1.3 |
| February | 2.0 |
| March | 2.0 |
| April | 2.8 |
| May | 4.9 |
| June | 4.8 |
| July | 3.9 |
| August | 3.9 |
| September | 3.6 |
| October | 4.0 |
| November | 1.8 |
| December | 1.4 |
Sunrise / Sunset
Daylight
Longest: 15h 19m · Shortest: 8h 41m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:29 AM | 4:31 PM | 9h 03m |
| February | 6:53 AM | 5:07 PM | 10h 14m |
| March | 6:11 AM | 5:49 PM | 11h 38m |
| April | 5:23 AM | 6:37 PM | 13h 14m |
| May | 4:43 AM | 7:17 PM | 14h 34m |
| June | 4:21 AM | 7:39 PM | 15h 17m |
| July | 4:30 AM | 7:30 PM | 14h 60m |
| August | 5:05 AM | 6:55 PM | 13h 50m |
| September | 5:51 AM | 6:09 PM | 12h 17m |
| October | 6:38 AM | 5:22 PM | 10h 45m |
| November | 7:19 AM | 4:41 PM | 9h 23m |
| December | 7:39 AM | 4:21 PM | 8h 42m |
Nearby Stations
Plan Your Garden with Planter
Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.
Try Planter For FreeAvailable everywhere: iOS, Android, web, and more!