Frost Dates for Stephan 2 Nw, SD

Elevation: 550 m

Frost Dates

Last Spring Frost (50%) May 10

First Fall Frost (50%) September 29

30% Probability

Last Spring Frost May 16

First Fall Frost September 24

Hard Freeze (28°F)

Last Spring Hard Freeze May 2

First Fall Hard Freeze October 6

44.27°N, 99.44°W © OpenStreetMap

Growing Season

142 Days May 10 to September 29

USDA Hardiness Zone

Zone 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

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.

Köppen climate map

Temperature

0° 30° 60° 90°

16°

Jan

20°

Feb

31°

Mar

44°

Apr

56°

May

66°

Jun

72°

Jul

71°

Aug

62°

Sep

47°

Oct

32°

Nov

20°

Dec

32°F

28°F

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
January	26°	16°	5°
February	31°	20°	8°
March	44°	31°	19°
April	57°	44°	31°
May	68°	56°	43°
June	79°	66°	54°
July	85°	72°	60°
August	84°	71°	58°
September	76°	62°	47°
October	60°	47°	33°
November	44°	32°	20°
December	31°	20°	10°

Precipitation

0" 2" 4" 6" 6.5"

2.7"

Jan

2.5"

Feb

4.1"

Mar

5.5"

Apr

5.7"

May

6.0"

Jun

6.5"

Jul

5.7"

Aug

6.4"

Sep

6.0"

Oct

3.4"

Nov

2.6"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.7
February	2.5
March	4.1
April	5.5
May	5.7
June	6.0
July	6.5
August	5.7
September	6.4
October	6.0
November	3.4
December	2.6

Sunrise / Sunset

Jan: 7:29 AM – 4:31 PM · 9h 02m

Feb: 6:53 AM – 5:07 PM · 10h 14m

Mar: 6:11 AM – 5:49 PM · 11h 38m

Apr: 5:23 AM – 6:37 PM · 13h 14m

May: 4:43 AM – 7:17 PM · 14h 35m

Jun: 4:21 AM – 7:39 PM · 15h 19m

Jul: 4:30 AM – 7:30 PM · 15h 01m

Aug: 5:05 AM – 6:55 PM · 13h 51m

Sep: 5:51 AM – 6:09 PM · 12h 17m

Oct: 6:38 AM – 5:22 PM · 10h 44m

Nov: 7:19 AM – 4:41 PM · 9h 22m

Dec: 7:39 AM – 4:21 PM · 8h 41m

Daylight Longest: 15h 20m · Shortest: 8h 40m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:29 AM	4:31 PM	9h 02m
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 35m
June	4:21 AM	7:39 PM	15h 19m
July	4:30 AM	7:30 PM	15h 01m
August	5:05 AM	6:55 PM	13h 51m
September	5:51 AM	6:09 PM	12h 17m
October	6:38 AM	5:22 PM	10h 44m
November	7:19 AM	4:41 PM	9h 22m
December	7:39 AM	4:21 PM	8h 41m

Nearby Stations

Lake Sharpe Prj, SD May 6 - October 5 Highmore 1 W, SD May 12 - October 1 Harrold 12 Ssw, SD May 17 - September 24 Gann Valley 4nw, SD May 6 - October 1 Gann Valley 3 Nne, SD May 7 - October 1 Miller, SDMay 3 - October 3

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