Frost Dates for Clear Lake, SD

Elevation: 552 m

Frost Dates

Last Spring Frost (50%) May 7

First Fall Frost (50%) October 1

30% Probability

Last Spring Frost May 12

First Fall Frost September 26

Hard Freeze (28°F)

Last Spring Hard Freeze April 29

First Fall Hard Freeze October 10

44.76°N, 96.68°W © OpenStreetMap

Growing Season

147 Days May 7 to October 1

USDA Hardiness Zone

Zone 4b

Avg. annual minimum: −25 to −20°F

Learn more

Köppen Climate

Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

Köppen climate map

Temperature

0° 30° 60° 90°

12°

Jan

16°

Feb

28°

Mar

42°

Apr

55°

May

65°

Jun

70°

Jul

68°

Aug

60°

Sep

45°

Oct

31°

Nov

17°

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	21°	12°	2°
February	26°	16°	7°
March	38°	28°	18°
April	53°	42°	31°
May	66°	55°	44°
June	75°	65°	55°
July	80°	70°	60°
August	78°	68°	58°
September	70°	60°	49°
October	56°	45°	35°
November	40°	31°	21°
December	26°	17°	9°

Precipitation

0" 2" 4" 5.0"

2.0"

Jan

2.3"

Feb

3.2"

Mar

4.2"

Apr

4.7"

May

5.0"

Jun

5.0"

Jul

3.7"

Aug

3.8"

Sep

3.6"

Oct

2.9"

Nov

2.4"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.0
February	2.3
March	3.2
April	4.2
May	4.7
June	5.0
July	5.0
August	3.7
September	3.8
October	3.6
November	2.9
December	2.4

Sunrise / Sunset

Jan: 7:31 AM – 4:29 PM · 8h 58m

Feb: 6:54 AM – 5:06 PM · 10h 12m

Mar: 6:11 AM – 5:49 PM · 11h 38m

Apr: 5:22 AM – 6:38 PM · 13h 16m

May: 4:41 AM – 7:19 PM · 14h 38m

Jun: 4:19 AM – 7:41 PM · 15h 22m

Jul: 4:28 AM – 7:32 PM · 15h 04m

Aug: 5:04 AM – 6:56 PM · 13h 53m

Sep: 5:51 AM – 6:09 PM · 12h 18m

Oct: 6:39 AM – 5:21 PM · 10h 43m

Nov: 7:21 AM – 4:39 PM · 9h 19m

Dec: 7:41 AM – 4:19 PM · 8h 37m

Daylight Longest: 15h 24m · Shortest: 8h 36m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:31 AM	4:29 PM	8h 58m
February	6:54 AM	5:06 PM	10h 12m
March	6:11 AM	5:49 PM	11h 38m
April	5:22 AM	6:38 PM	13h 16m
May	4:41 AM	7:19 PM	14h 38m
June	4:19 AM	7:41 PM	15h 22m
July	4:28 AM	7:32 PM	15h 04m
August	5:04 AM	6:56 PM	13h 53m
September	5:51 AM	6:09 PM	12h 18m
October	6:39 AM	5:21 PM	10h 43m
November	7:21 AM	4:39 PM	9h 19m
December	7:41 AM	4:19 PM	8h 37m

Nearby Stations

Castlewood, SD May 10 - September 27 Castlewood #2, SD May 6 - October 1 Astoria 4s, SDMay 6 - October 3 Canby, MNMay 2 - October 5 Watertown 2 S, SD May 3 - October 4 Watertown Rgnl AP, SD May 7 - September 30

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