Frost Dates for Alder 19s, MT

Elevation: 1752 m

Frost Dates

This location has year-round freezing temperatures.

45.10°N, 112.09°W © OpenStreetMap

USDA Hardiness Zone

Zone 5a

Avg. annual minimum: −20 to −15°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

10° 30° 50° 70° 90°

22°

Jan

25°

Feb

33°

Mar

39°

Apr

48°

May

55°

Jun

62°

Jul

61°

Aug

53°

Sep

42°

Oct

30°

Nov

21°

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°	22°	11°
February	36°	25°	14°
March	45°	33°	21°
April	53°	39°	26°
May	63°	48°	33°
June	70°	55°	39°
July	81°	62°	44°
August	79°	61°	44°
September	70°	53°	37°
October	56°	42°	27°
November	41°	30°	19°
December	31°	21°	11°

Precipitation

0" 2" 4" 4.6"

1.9"

Jan

2.1"

Feb

2.6"

Mar

3.1"

Apr

4.1"

May

4.6"

Jun

3.6"

Jul

3.5"

Aug

4.4"

Sep

3.9"

Oct

2.1"

Nov

1.6"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	1.9
February	2.1
March	2.6
April	3.1
May	4.1
June	4.6
July	3.6
August	3.5
September	4.4
October	3.9
November	2.1
December	1.6

Sunrise / Sunset

Jan: 7:32 AM – 4:28 PM · 8h 56m

Feb: 6:55 AM – 5:05 PM · 10h 10m

Mar: 6:11 AM – 5:49 PM · 11h 37m

Apr: 5:22 AM – 6:38 PM · 13h 17m

May: 4:40 AM – 7:20 PM · 14h 40m

Jun: 4:18 AM – 7:42 PM · 15h 25m

Jul: 4:27 AM – 7:33 PM · 15h 06m

Aug: 5:03 AM – 6:57 PM · 13h 54m

Sep: 5:51 AM – 6:09 PM · 12h 18m

Oct: 6:39 AM – 5:21 PM · 10h 42m

Nov: 7:22 AM – 4:38 PM · 9h 17m

Dec: 7:43 AM – 4:17 PM · 8h 35m

Daylight Longest: 15h 26m · Shortest: 8h 34m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:32 AM	4:28 PM	8h 56m
February	6:55 AM	5:05 PM	10h 10m
March	6:11 AM	5:49 PM	11h 37m
April	5:22 AM	6:38 PM	13h 17m
May	4:40 AM	7:20 PM	14h 40m
June	4:18 AM	7:42 PM	15h 25m
July	4:27 AM	7:33 PM	15h 06m
August	5:03 AM	6:57 PM	13h 54m
September	5:51 AM	6:09 PM	12h 18m
October	6:39 AM	5:21 PM	10h 42m
November	7:22 AM	4:38 PM	9h 17m
December	7:43 AM	4:17 PM	8h 35m

Nearby Stations

Alder 17 S, MT June 6 - September 14 Virginia City, MT June 4 - September 18 Laurin 2ne, MT May 24 - September 22 Ennis, MTJune 16 - September 4 Dillon AP, MT June 2 - September 13 Dillon U Of Montana Western, MT June 5 - September 13

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