Frost Dates for Dunkirk 19nne, MT

Elevation: 1013 m

Frost Dates

Last Spring Frost (50%) May 23

First Fall Frost (50%) September 14

30% Probability

Last Spring Frost May 28

First Fall Frost September 8

Hard Freeze (28°F)

Last Spring Hard Freeze May 10

First Fall Hard Freeze September 24

48.72°N, 111.48°W © OpenStreetMap

Growing Season

114 Days May 23 to September 14

USDA Hardiness Zone

Zone 3b

Avg. annual minimum: −35 to −30°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°

17°

Jan

20°

Feb

30°

Mar

41°

Apr

51°

May

59°

Jun

66°

Jul

65°

Aug

55°

Sep

41°

Oct

28°

Nov

19°

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	29°	17°	5°
February	34°	20°	7°
March	43°	30°	17°
April	55°	41°	27°
May	65°	51°	37°
June	72°	59°	45°
July	82°	66°	50°
August	81°	65°	49°
September	70°	55°	39°
October	57°	41°	26°
November	41°	28°	15°
December	32°	19°	6°

Precipitation

0" 1" 2" 3" 3.2"

0.9"

Jan

0.8"

Feb

1.4"

Mar

1.5"

Apr

2.8"

May

3.2"

Jun

2.1"

Jul

2.3"

Aug

2.1"

Sep

1.6"

Oct

1.4"

Nov

1.2"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	0.9
February	0.8
March	1.4
April	1.5
May	2.8
June	3.2
July	2.1
August	2.3
September	2.1
October	1.6
November	1.4
December	1.2

Sunrise / Sunset

Jan: 7:45 AM – 4:15 PM · 8h 29m

Feb: 7:02 AM – 4:58 PM · 9h 55m

Mar: 6:13 AM – 5:47 PM · 11h 34m

Apr: 5:16 AM – 6:44 PM · 13h 27m

May: 4:29 AM – 7:31 PM · 15h 02m

Jun: 4:02 AM – 7:58 PM · 15h 55m

Jul: 4:13 AM – 7:47 PM · 15h 33m

Aug: 4:55 AM – 7:05 PM · 14h 10m

Sep: 5:50 AM – 6:10 PM · 12h 20m

Oct: 6:44 AM – 5:16 PM · 10h 31m

Nov: 7:33 AM – 4:27 PM · 8h 54m

Dec: 7:58 AM – 4:02 PM · 8h 05m

Daylight Longest: 15h 57m · Shortest: 8h 03m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:45 AM	4:15 PM	8h 29m
February	7:02 AM	4:58 PM	9h 55m
March	6:13 AM	5:47 PM	11h 34m
April	5:16 AM	6:44 PM	13h 27m
May	4:29 AM	7:31 PM	15h 02m
June	4:02 AM	7:58 PM	15h 55m
July	4:13 AM	7:47 PM	15h 33m
August	4:55 AM	7:05 PM	14h 10m
September	5:50 AM	6:10 PM	12h 20m
October	6:44 AM	5:16 PM	10h 31m
November	7:33 AM	4:27 PM	8h 54m
December	7:58 AM	4:02 PM	8h 05m

Nearby Stations

Sunburst 8 E, MT May 17 - September 25 Goldbutte 7 N, MT Shelby, MTMay 23 - September 16 Chester, MTMay 24 - September 17 Sweetgrass, MT May 15 - September 25 Tiber Dam, MT May 16 - September 23

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