Walpole Weather Statistics

John R. Anderson has over the years compiled and organized this summary of climate information on Walpole.  Most of the data in the following tables has been excerpted from Walpole, Massachusetts Climatological Data: October 1948 to December 2008, by John R. Anderson, 2009.  A copy of this book is located in the Walpole Room of the Walpole Public Library (call number:  WAL 551.6 AND 2009).

Decade xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9
190x NA NA 33.36 36.01 36.08 29.23 41.45 37.56 40.00 44.21
1910/19 36.82 41.78 39.09 42.09 34.59 43.52 40.75 39.73 39.24 46.37
1920/29 48.29 48.76 46.01 36.56 39.02 41.49 42.93 43.45 39.65 42.74
1930/39 36.21 45.33 46.74 50.27 41.34 40.35 53.25 45.42 56.28 37.67
1940/49 40.06 32.38 44.03 34.13 41.13 51.07 40.34 44.23 46.47 33.79
1950/59 41.98 51.29 39.19 61.61 57.10 62.57 50.68 29.83 54.35 48.76
1960/69 49.81 49.49 50.98 41.60 39.61 28.09 36.36 47.14 43.10 49.73
1970/79 41.13 34.66 62.60 51.26 48.11 55.07 43.77 54.85 42.41 55.48
1980/89 29.37 41.77 46.13 58.44 53.32 35.86 47.76 46.33 44.21 50.74
1990/99 52.94 47.11 45.87 41.03 46.18 38.16 60.04 36.78 60.82 48.13
2000/09 48.17 42.90 48.57 54.46 47.63 59.34 55.60 43.51 58.69 52.83
2010/19 56.87 61.90 45.30 46.72 47.88 37.68 36.07 46.27 65.00 57.59
Decade 0 1 2 3 4 5 6 7 8 9
1950/59 NA 32.1 36.5 31.6 42.5 23.6 101.8 48.0 71.6 37.2
1960/69 71.9 77.0 49.8 53.4 56.2 38.6 72.1 88.6 38.9 74.6
1970/79 65.5 40.3 53.8 10.4 38.6 52.7 48.4 61.1 95.1 23.6
1980/89 22.2 48.7 52.0 42.5 48.9 32.6 35.5 70.7 42.1 30.0
1990/99 42.5 24.0 32.0 65.1 69.1 39.6 101.1 67.0 14.7 48.4
2000/09 37.9 68.3 44.0 93.1 45.6 98.8 32.9 49.3 47.0 68.1
2010/19 48.7 37.7 29.0 78.3 57.2 92.6 46.5 54.3 72.9 55.1
Month Avg. High Avg. Low Extreme High Extreme Low Max. Snowfall Avg. Precip. Max. Precip.
January 36.3° 18.3° 71° (1/12/20) -19°* 44.3″ (2011) 3.78″ 11.76″ (1979)
February 39.7° 21.1° 72°* (2/21/18) -19°* 54.6″ (2015) 3.54″ 8.17″ (2008)
March 47.7° 27.6° 90° (3/31/98) -13° (3/19/67) 43.8″ (1956) 4.81″ 16.75 (2010)
April 59.1° 37.2° 96° (4/19/76) 10° (4/4/54) 26.8″ (1997) 4.39″ 11.75″ (1987)
May 69.5° 46.9° 96°* ( 22° (5/3/66) 8.2″ (1977) 3.65″ 8.15″ (2006)
June 77.9° 56.7° 97° (6/15/88) 33° (6/6/64) 0 4.08″ 12.98″ (1998)
July 82.8° 62.3° 102° (7/22/11) 39° (7/7/65) 0 3.91″ 10.73″ (1988)
August 81.1° 61.1° 102° (8/2/75) 32° (8/31/65) 0 3.91″ 20.48″ (1955)
September 73.3° 53.1° 100° (9/2/53) 26°* 0 3.66″ 10.45″ (2018)
October 62.2° 41.5° 88° (10/12/54) 15° (10/31/66) 4.5″ (2020) 4.35″ 14.11″ (2005)
November 51.8° 33.4° 82° (11/2/50)  (11/24/89) 12.3″ (1986) 4.46″ 9.93″ (2018)
December 41.0° 24.0° 76° (12/7/98) -14° (12/26/80) 29.4″ (2003) 4.52″ 11.16″ (1969)

* recorded on multiple dates in different years

Month Avg. High Avg. Low Extreme High Extreme Low Max. Snowfall Avg. Precip. Max. Precip.
January 35.9° 17.3° 69° (1/25/50) -19°* 41.0″ (2005) 3.93″ 11.76″ (1979)
February 38.3° 18.7° 70°* -19°* 54.6″ (2015) 3.72″ 8.17″ (2008)
March 46° 26.7° 90° (3/31/98) -13° (3/19/67) 43.8″ (1956) 4.12″ 10.62″ (2001)
April 58.1° 35.7° 96° (4/19/76) 10° (4/4/54) 26.8″ (1997) 3.92″ 11.75″ (1987)
May 69.1° 45° 95° (5/30/87) 22° (5/3/66) 8.2″ (1977) 3.36″ 8.15″ (2006)
June 77.3° 54.5° 97° (6/15/88) 33° (6/6/64) 0 2.96″ 12.98″ (1998)
July 82.4° 60.3° 101° (7/21/77) 39° (7/7/65) 0 3.20″ 10.73″ (1988)
August 80.2° 58.7° 102° (8/2/75) 32° (8/31/65) 0 3.98″ 20.48″ (1955)
September 72.2° 50.6° 100° (9/2/53) 26°* 0 3.77″ 8.88″ (1954)
October 62.4° 40.3° 88° (10/12/54) 15° (10/31/66) 2.8″ (1979) 3.66″ 14.11″ (2005)
November 51.2° 32.3° 82° (11/2/50)  (11/24/89) 12.3″ (1986) 4.66″ 9.10″ (1983)
December 39.5° 21.7° 76° (12/7/98) -14° (12/26/80) 29.4″ (2003) 4.24″ 11.16″ (1969)

Month

1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
January 31.7° 34.2° 27.0° 29.1° 29.2° 20.3° 33.2° 27.7° 27.9° 32.8° 28.7°
February 28.6° 33.0° 33.3° 30.7° 23.9° 24.9° 26.9° 28.5° 35.7°1 35.4° 33.3°
March 36.1° 39.2° 40.1° 34.4° 33.8° 36.5° 38.7° 34.3° 36.4° 40.6° 39.0°
April 45.3° 47.3° 51.0° 45.1° 47.7° 50.8° 46.4° 48.2° 45.6° 49.0° 49.1°
May 59.9° 54.5° 63.3°1 56.6° 60.4° 56.7° 56.5° 57.0° 55.4° 60.9° 59.4°
June 67.4° 66.5° 67.4° 66.6° 67.6° 70.3° 67.7° 67.9° 67.4° 65.5° 70.5°1
July 71.2° 71.9° 72.2° 69.0° 72.5° 76.5°1 74.8° 71.1° 72.2° 72.8° 75.3°
August 70.4° 71.2° 72.2° 68.9° 72.8° 69.5° 71.0° 71.0° 69.7° 72.3° 71.4°
September 62.8° 62.0° 60.8° 61.7° 63.4° 61.7° 61.4° 62.5° 63.0° 65.3° 66.6°1
October 51.9° 55.9° 54.1° 49.4° 49.9° 51.5° 55.3° 51.0° 50.5° 52.6° 50.8°
November 40.4° 45.0° 42.8° 39.5° 42.4° 46.5° 38.6° 37.5° 39.3° 42.3° 47.2°
December 18.7°2 37.7° 33.7° 31.9° 31.3° 35.5° 27.8° 37.4° 32.8° 37.7° 35.4°
Ave. Annual 48.8° 51.6° 51.6° 48.6° 49.7° 50.2° 50.0° 49.6° 49.7° 52.4° 52.3°

1  =   Warmest [month] of record for Walpole    2  =   Coldest [month] of record for Walpole

Month

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
January 26.7° 27.4° 34.4°1 22.2° 20.3° 25.3° 35.1° 32.1° 30.6° 22.3°
February 33.4° 30.5° 35.0° 25.4° 30.7° 29.8° 30.3° 25.4° 30.8° 32.1°
March 43.3°1 34.7° 39.7° 37.5° 38.6° 33.4° 37.9° 37.3° 37.8° 38.0°
April 46.8° 48.8° 51.1° 44.7° 49.3° 50.6° 49.8° 45.4° 50.0° 50.9°
May 58.4° 60.3° 57.1° 55.4° 60.4° 52.6° 56.9° 60.2° 56.3° 60.1°
June 67.2° 70.3° 66.0° 69.9° 66.5° 69.9° 67.7° 67.4° 69.4° 63.4°
July 69.1° 69.4° 73.6° 73.4° 70.9° 73.4° 75.4° 72.6° 74.8° 69.2°
August 69.0° 73.7° 73.7° 73.5° 71.3° 74.7°1 70.1° 71.8° 68.6° 72.7°
September 62.4° 64.5° 66.2° 64.9° 64.5° 66.5° 62.2° 65.6° 63.5° 61.7°
October 51.9° 54.8° 49.7° 50.4° 52.0° 54.0° 51.9° 58.0°1 51.0° 50.0°
November 41.6° 46.3° 40.8° 44.0° 42.0° 45.0° 47.4° 40.0° 41.1° 46.7°
December 27.6° 37.9° 30.6° 33.9° 32.9° 30.1° 38.9° 29.6° 34.5° 30.6°
Ave. Annual 49.8° 51.6° 51.6° 49.4° 50.0° 50.5° 52.1° 50.5° 50.8° 49.9°

1  =   Warmest [month] of record for Walpole    2  =   Coldest [month] of record for Walpole

Month

2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
January 27.4° 24.1° 32.4° 30.2° 25.7° 24.4° 30.3° 33.2° 27.0° 28.8°
February 31.1° 28.5° 35.8°1 30.3° 26.5° 17.0° 32.9° 35.3° 37.3° 31.4°
March 42.9° 38.0° 46.0°1 36.7° 32.9° 32.4° 42.9° 33.6° 36.3° 36.1°
April 52.5° 50.0° 51.4° 49.3° 48.5° 48.1° 47.5° 52.5° 45.2° 49.5°
May 62.9° 60.0° 61.8° 59.7° 59.3 63.9 59.4 57.1 63.5 56.8
June 70.3° 66.8° 66.2° 68.7° 67.8 65.7 68.5 68.2 67.1 67.8
July 76.3° 75.3° 75.0° 77.0° 73.6 73.6 75.3 71.7 75.6 75.6
August 72.3° 71.8° 74.1° 70.1° 69.4 73.8 75.3 70.3 75.7 71.7
September 66.8° 66.6° 64.0° 63.2° 64.8 68.5 66.8 66.6 66.3 64.1
October 52.9° 53.7° 54.9° 53.0° 54.8 52.1 53.3 59.3 51.5 54.1
November 42.1° 47.5°1 39.5° 40.8° 40.2 45.7 44.1 41.7 39.7 38.7
December 30.0° 37.3° 36.3° 31.3° 36.5 43.6 32.6 28.1 34.1 33.1

Ave. Annual

52.3° 51.6° 54.6° 50.9° 50. 50.7° 52.4° 51.5° 51.6° 50.6°

Month

2020
January 34.4° ° ° ° ° ° ° ° ° °
February 34.6° ° ° ° ° ° ° ° ° °
March 42.9° ° ° ° ° ° ° ° ° °
April 44.5° ° ° ° ° ° ° ° ° °
May 58.1° ° ° ° ° ° ° ° ° °
June 69.5° ° ° ° ° ° ° ° ° °
July 76.5° ° ° ° ° ° ° ° ° °
August 74.0° ° ° ° ° ° ° ° ° °
September 64.7° ° ° ° ° ° ° ° ° °
October 54.0° ° ° ° ° ° ° ° ° °
November 47.3° ° ° ° ° ° ° ° ° °
December 35.1° ° ° ° ° ° ° ° ° °

Ave. Annual

53.0° ° ° ° ° ° ° ° ° °