Frost Dates for Pretty Rock, ND

Elevation: 756 m

Frost Dates

Last Spring Frost (50%) May 20

First Fall Frost (50%) September 23

30% Probability

Last Spring Frost May 26

First Fall Frost September 17

Hard Freeze (28°F)

Last Spring Hard Freeze May 9

First Fall Hard Freeze October 2

46.18°N, 101.86°W © OpenStreetMap

Growing Season

126 Days May 20 to September 23

USDA Hardiness Zone

Zone 4a

Avg. annual minimum: −30 to −25°F

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Köppen Climate

BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

0° 30° 60° 90°

16°

Jan

20°

Feb

31°

Mar

43°

Apr

54°

May

64°

Jun

70°

Jul

69°

Aug

60°

Sep

45°

Oct

30°

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°	6°
February	30°	20°	9°
March	43°	31°	19°
April	56°	43°	30°
May	68°	54°	41°
June	77°	64°	51°
July	85°	70°	56°
August	84°	69°	54°
September	74°	60°	45°
October	57°	45°	33°
November	41°	30°	19°
December	30°	20°	10°

Precipitation

0" 2" 4" 4.7"

1.2"

Jan

1.2"

Feb

2.0"

Mar

3.3"

Apr

4.2"

May

4.4"

Jun

4.7"

Jul

4.0"

Aug

3.3"

Sep

2.7"

Oct

1.4"

Nov

1.1"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	1.2
February	1.2
March	2.0
April	3.3
May	4.2
June	4.4
July	4.7
August	4.0
September	3.3
October	2.7
November	1.4
December	1.1

Sunrise / Sunset

Jan: 7:36 AM – 4:24 PM · 8h 49m

Feb: 6:57 AM – 5:03 PM · 10h 06m

Mar: 6:12 AM – 5:48 PM · 11h 36m

Apr: 5:20 AM – 6:40 PM · 13h 20m

May: 4:37 AM – 7:23 PM · 14h 46m

Jun: 4:13 AM – 7:47 PM · 15h 33m

Jul: 4:23 AM – 7:37 PM · 15h 14m

Aug: 5:01 AM – 6:59 PM · 13h 58m

Sep: 5:51 AM – 6:09 PM · 12h 18m

Oct: 6:41 AM – 5:19 PM · 10h 39m

Nov: 7:25 AM – 4:35 PM · 9h 10m

Dec: 7:47 AM – 4:13 PM · 8h 26m

Daylight Longest: 15h 35m · Shortest: 8h 25m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:36 AM	4:24 PM	8h 49m
February	6:57 AM	5:03 PM	10h 06m
March	6:12 AM	5:48 PM	11h 36m
April	5:20 AM	6:40 PM	13h 20m
May	4:37 AM	7:23 PM	14h 46m
June	4:13 AM	7:47 PM	15h 33m
July	4:23 AM	7:37 PM	15h 14m
August	5:01 AM	6:59 PM	13h 58m
September	5:51 AM	6:09 PM	12h 18m
October	6:41 AM	5:19 PM	10h 39m
November	7:25 AM	4:35 PM	9h 10m
December	7:47 AM	4:13 PM	8h 26m

Nearby Stations

Lemmon, SDMay 10 - September 30 Carson, NDMay 19 - September 25 Mott, NDMay 16 - September 25 Heart Butte Dam, ND May 14 - September 29 Mc Intosh 6 Se, SD May 9 - September 30 Flasher, NDMay 13 - September 27

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