Frost Dates for Denton, MT

Elevation: 1100 m

Frost Dates

Last Spring Frost (50%) June 1

First Fall Frost (50%) September 11

30% Probability

Last Spring Frost June 9

First Fall Frost September 6

Hard Freeze (28°F)

Last Spring Hard Freeze May 14

First Fall Hard Freeze September 23

47.32°N, 109.94°W © OpenStreetMap

Growing Season

102 Days June 1 to September 11

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°

22°

Jan

24°

Feb

33°

Mar

41°

Apr

51°

May

59°

Jun

66°

Jul

65°

Aug

55°

Sep

43°

Oct

31°

Nov

23°

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	36°	22°	9°
February	37°	24°	11°
March	46°	33°	19°
April	55°	41°	28°
May	65°	51°	37°
June	73°	59°	44°
July	83°	66°	49°
August	83°	65°	48°
September	72°	55°	39°
October	58°	43°	28°
November	45°	31°	18°
December	36°	23°	10°

Precipitation

0" 2" 4" 5.0"

2.0"

Jan

1.4"

Feb

2.3"

Mar

3.2"

Apr

4.5"

May

5.0"

Jun

4.2"

Jul

4.3"

Aug

4.1"

Sep

3.4"

Oct

2.2"

Nov

1.9"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.0
February	1.4
March	2.3
April	3.2
May	4.5
June	5.0
July	4.2
August	4.3
September	4.1
October	3.4
November	2.2
December	1.9

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 36m

Apr: 5:19 AM – 6:41 PM · 13h 23m

May: 4:33 AM – 7:27 PM · 14h 53m

Jun: 4:09 AM – 7:51 PM · 15h 43m

Jul: 4:19 AM – 7:41 PM · 15h 22m

Aug: 4:58 AM – 7:02 PM · 14h 03m

Sep: 5:50 AM – 6:10 PM · 12h 19m

Oct: 6:42 AM – 5:18 PM · 10h 35m

Nov: 7:28 AM – 4:32 PM · 9h 03m

Dec: 7:52 AM – 4:08 PM · 8h 17m

Daylight Longest: 15h 44m · Shortest: 8h 16m

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 36m
April	5:19 AM	6:41 PM	13h 23m
May	4:33 AM	7:27 PM	14h 53m
June	4:09 AM	7:51 PM	15h 43m
July	4:19 AM	7:41 PM	15h 22m
August	4:58 AM	7:02 PM	14h 03m
September	5:50 AM	6:10 PM	12h 19m
October	6:42 AM	5:18 PM	10h 35m
November	7:28 AM	4:32 PM	9h 03m
December	7:52 AM	4:08 PM	8h 17m

Nearby Stations

Stanford, MTMay 25 - September 21 Moccasin Exp Stn, MT May 28 - September 20 Geraldine, MT May 14 - September 26 Lewistown Muni AP, MT May 23 - September 21 Lewistown, MT May 14 - September 28 Winifred, MTMay 16 - September 23

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