Frost Dates for Valentine, MT

Elevation: 885 m

Frost Dates

Last Spring Frost (50%) May 18

First Fall Frost (50%) September 21

30% Probability

Last Spring Frost May 23

First Fall Frost September 16

Hard Freeze (28°F)

Last Spring Hard Freeze May 7

First Fall Hard Freeze September 29

47.34°N, 108.50°W © OpenStreetMap

Growing Season

126 Days May 18 to September 21

USDA Hardiness Zone

Zone 3b

Avg. annual minimum: −35 to −30°F

Learn more

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°

19°

Jan

23°

Feb

33°

Mar

43°

Apr

53°

May

62°

Jun

70°

Jul

69°

Aug

58°

Sep

44°

Oct

32°

Nov

22°

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	33°	19°	6°
February	36°	23°	10°
March	47°	33°	19°
April	57°	43°	29°
May	66°	53°	39°
June	75°	62°	49°
July	86°	70°	54°
August	85°	69°	52°
September	74°	58°	42°
October	59°	44°	30°
November	45°	32°	18°
December	35°	22°	9°

Precipitation

0" 2" 4" 4.7"

2.8"

Jan

2.2"

Feb

2.8"

Mar

3.2"

Apr

4.6"

May

4.7"

Jun

3.7"

Jul

3.4"

Aug

3.3"

Sep

3.7"

Oct

3.0"

Nov

3.1"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.8
February	2.2
March	2.8
April	3.2
May	4.6
June	4.7
July	3.7
August	3.4
September	3.3
October	3.7
November	3.0
December	3.1

Sunrise / Sunset

Jan: 7:40 AM – 4:20 PM · 8h 40m

Feb: 6:59 AM – 5:01 PM · 10h 01m

Mar: 6:12 AM – 5:48 PM · 11h 35m

Apr: 5:19 AM – 6:41 PM · 13h 23m

May: 4:33 AM – 7:27 PM · 14h 53m

Jun: 4:08 AM – 7:52 PM · 15h 43m

Jul: 4:19 AM – 7:41 PM · 15h 23m

Aug: 4:58 AM – 7:02 PM · 14h 04m

Sep: 5:50 AM – 6:10 PM · 12h 19m

Oct: 6:42 AM – 5:18 PM · 10h 35m

Nov: 7:29 AM – 4:31 PM · 9h 03m

Dec: 7:52 AM – 4:08 PM · 8h 17m

Daylight Longest: 15h 45m · Shortest: 8h 15m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:40 AM	4:20 PM	8h 40m
February	6:59 AM	5:01 PM	10h 01m
March	6:12 AM	5:48 PM	11h 35m
April	5:19 AM	6:41 PM	13h 23m
May	4:33 AM	7:27 PM	14h 53m
June	4:08 AM	7:52 PM	15h 43m
July	4:19 AM	7:41 PM	15h 23m
August	4:58 AM	7:02 PM	14h 04m
September	5:50 AM	6:10 PM	12h 19m
October	6:42 AM	5:18 PM	10h 35m
November	7:29 AM	4:31 PM	9h 03m
December	7:52 AM	4:08 PM	8h 17m

Nearby Stations

Roy 8 Ne, MTMay 14 - September 24 Sand Creek, MT May 12 - September 27 Grass Range, MT May 20 - September 24 Flatwillow 4 Ene, MT May 16 - September 28 Mosby 4 Ene, MTMay 5 - October 4 Zortman, MTMay 18 - September 23

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