Frost Dates for Charlemont, MA

Based on data from E Hawley weather station, 4 miles away

Elevation: 584 ft

Frost Dates

Last Spring Frost (50%) May 17

First Fall Frost (50%) October 1

30% Probability

Last Spring Frost May 22

First Fall Frost September 25

Hard Freeze (28°F)

Last Spring Hard Freeze May 4

First Fall Hard Freeze October 10

42.63°N, 72.87°W © OpenStreetMap

Growing Season

137 Days May 17 to October 1

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

0° 20° 40° 60° 80°

19°

Jan

21°

Feb

29°

Mar

41°

Apr

51°

May

60°

Jun

64°

Jul

63°

Aug

57°

Sep

45°

Oct

36°

Nov

26°

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	28°	19°	9°
February	31°	21°	11°
March	39°	29°	19°
April	51°	41°	30°
May	63°	51°	40°
June	70°	60°	50°
July	75°	64°	53°
August	74°	63°	52°
September	68°	57°	46°
October	56°	45°	35°
November	45°	36°	27°
December	34°	26°	18°

Precipitation

0" 2" 4" 5.6"

3.8"

Jan

3.8"

Feb

4.0"

Mar

4.5"

Apr

4.7"

May

5.3"

Jun

5.4"

Jul

5.6"

Aug

5.3"

Sep

5.0"

Oct

3.8"

Nov

4.4"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	3.8
February	3.8
March	4.0
April	4.5
May	4.7
June	5.3
July	5.4
August	5.6
September	5.3
October	5.0
November	3.8
December	4.4

Sunrise / Sunset

Jan: 7:25 AM – 4:37 PM · 9h 12m

Feb: 6:56 AM – 5:16 PM · 10h 20m

Mar: 7:11 AM – 6:51 PM · 11h 39m

Apr: 6:17 AM – 7:27 PM · 13h 10m

May: 5:35 AM – 8:01 PM · 14h 26m

Jun: 5:18 AM – 8:25 PM · 15h 07m

Jul: 5:32 AM – 8:22 PM · 14h 50m

Aug: 6:04 AM – 7:48 PM · 13h 44m

Sep: 6:38 AM – 6:54 PM · 12h 16m

Oct: 7:12 AM – 6:01 PM · 10h 48m

Nov: 6:51 AM – 4:22 PM · 9h 31m

Dec: 7:21 AM – 4:14 PM · 8h 53m

Daylight Eastern Time (ET) Longest: 15h 08m · Shortest: 8h 52m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month	Sunrise	Sunset	Daylight
January	7:25 AM	4:37 PM	9h 12m
February	6:56 AM	5:16 PM	10h 20m
March	7:11 AM	6:51 PM	11h 39m
April	6:17 AM	7:27 PM	13h 10m
May	5:35 AM	8:01 PM	14h 26m
June	5:18 AM	8:25 PM	15h 07m
July	5:32 AM	8:22 PM	14h 50m
August	6:04 AM	7:48 PM	13h 44m
September	6:38 AM	6:54 PM	12h 16m
October	7:12 AM	6:01 PM	10h 48m
November	6:51 AM	4:22 PM	9h 31m
December	7:21 AM	4:14 PM	8h 53m

Nearby Stations

Rowe 3ne, MAMay 14 - October 4 Worthington, MAMay 13 - October 2 Greenfield #3, MA May 1 - October 11 North Adams Harriman AP, MA May 10 - October 4 Leverett #2, MAMay 2 - October 9 Amherst, MAMay 5 - October 8

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