Frost Dates for Butte, AK

Based on data from Palmer Job Corps weather station, 4 miles away

Elevation: 92 ft

Frost Dates

Last Spring Frost (50%) April 24

First Fall Frost (50%) October 4

30% Probability

Last Spring Frost May 1

First Fall Frost September 30

Hard Freeze (28°F)

Last Spring Hard Freeze April 14

First Fall Hard Freeze October 13

61.54°N, 149.03°W © OpenStreetMap

Growing Season

163 Days April 24 to October 4

USDA Hardiness Zone

Zone 5a

Avg. annual minimum: −20 to −15°F

Learn more

Köppen Climate

Dsc Subarctic (Dry Summer)

Cool, dry summers and cold winters. A rare climate found at high elevations. Very short growing season for cold-tolerant crops only.

Köppen climate map

Temperature

10° 30° 50° 70°

18°

Jan

24°

Feb

29°

Mar

43°

Apr

53°

May

60°

Jun

62°

Jul

59°

Aug

51°

Sep

39°

Oct

25°

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	24°	18°	12°
February	31°	24°	17°
March	38°	29°	21°
April	52°	43°	34°
May	63°	53°	43°
June	69°	60°	50°
July	70°	62°	54°
August	67°	59°	52°
September	58°	51°	44°
October	45°	39°	32°
November	30°	25°	19°
December	27°	21°	15°

Precipitation

0" 1" 2" 3" 3.3"

3.1"

Jan

3.3"

Feb

3.0"

Mar

0.8"

Apr

1.6"

May

2.4"

Jun

2.8"

Jul

2.9"

Aug

3.0"

Sep

3.1"

Oct

2.3"

Nov

2.2"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	3.1
February	3.3
March	3.0
April	0.8
May	1.6
June	2.4
July	2.8
August	2.9
September	3.0
October	3.1
November	2.3
December	2.2

Sunrise / Sunset

Jan: 10:10 AM – 4:02 PM · 5h 52m

Feb: 8:55 AM – 5:27 PM · 8h 33m

Mar: 8:27 AM – 7:45 PM · 11h 18m

Apr: 6:45 AM – 9:08 PM · 14h 23m

May: 5:17 AM – 10:29 PM · 17h 12m

Jun: 4:25 AM – 11:28 PM · 19h 03m

Jul: 4:55 AM – 11:09 PM · 18h 14m

Aug: 6:13 AM – 9:48 PM · 15h 36m

Sep: 7:34 AM – 8:07 PM · 12h 33m

Oct: 8:54 AM – 6:29 PM · 9h 34m

Nov: 9:21 AM – 4:02 PM · 6h 41m

Dec: 10:24 AM – 3:21 PM · 4h 57m

Daylight Alaska Time (AKT) Longest: 19h 06m · Shortest: 4h 54m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Alaska Time (AKT))
Month	Sunrise	Sunset	Daylight
January	10:10 AM	4:02 PM	5h 52m
February	8:55 AM	5:27 PM	8h 33m
March	8:27 AM	7:45 PM	11h 18m
April	6:45 AM	9:08 PM	14h 23m
May	5:17 AM	10:29 PM	17h 12m
June	4:25 AM	11:28 PM	19h 03m
July	4:55 AM	11:09 PM	18h 14m
August	6:13 AM	9:48 PM	15h 36m
September	7:34 AM	8:07 PM	12h 33m
October	8:54 AM	6:29 PM	9h 34m
November	9:21 AM	4:02 PM	6h 41m
December	10:24 AM	3:21 PM	4h 57m

Nearby Stations

Palmer Muni AP, AK May 6 - September 25 Ben'S Farm, AK May 12 - September 20 Lazy Mtn, AKMay 22 - September 16 Matanuska Exp Farm, AK May 14 - September 20 Anderson Lake, AK May 16 - September 23 Little Su At Hatcher Pass Brg, AK May 18 - September 18

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