Petersham 3 N Weather Records (USC00196322)

Record envelope, standing records and threshold days for Petersham 3 N (USC00196322), Massachusetts, United States, with 84 years of record.

Key Facts for Petersham 3 N

Petersham 3 N (USC00196322) is a weather station in Massachusetts, United States at 42.53 latitude and -72.18 longitude, 332 m (1,090 ft) above sea level.
The station reports from 1913 to 1996, 84 years of record.
816 records set at Petersham 3 N still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Petersham 3 N set a daily record precipitation of 25.4 mm (1.0 in) on 25 December 1996.

About the Station

Location: Massachusetts, United States, 42.53 latitude, -72.18 longitude.
Elevation: 332 m (1,090 ft).
Period of record: 1913 to 1996, 84 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Petersham 3 N. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Petersham 3 N, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.2 C (54.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	30.6 C (87.1 F)	-2.8 C (27.0 F)	n/a	n/a
Jun	31.7 C (89.1 F)	0.6 C (33.1 F)	n/a	n/a
Jul	34.4 C (93.9 F)	5.0 C (41.0 F)	n/a	n/a
Aug	30.0 C (86.0 F)	2.8 C (37.0 F)	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	25.0 C (77.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	17.8 C (64.0 F)	-14.4 C (6.1 F)	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

816 standing records

816 records at Petersham 3 N still stand. 1967 holds the most, with 214.

Wettest Day of Each Month

Sep: 180.8 mm (7.1 in)

The wettest day on record for each calendar month at Petersham 3 N. The most was 180.8 mm (7.1 in) on 17 September 1933.

Record daily precipitation for each month at Petersham 3 N
Month	Record daily precipitation (mm)	Date
Jan	58.9 mm (2.3 in)	27 January 1986
Feb	56.9 mm (2.2 in)	7 February 1920
Mar	62.2 mm (2.4 in)	29 March 1919
Apr	83.1 mm (3.3 in)	13 April 1933
May	81.5 mm (3.2 in)	31 May 1984
Jun	148.6 mm (5.9 in)	24 June 1944
Jul	113.3 mm (4.5 in)	21 July 1959
Aug	154.9 mm (6.1 in)	19 August 1955
Sep	180.8 mm (7.1 in)	17 September 1933
Oct	81.0 mm (3.2 in)	24 October 1923
Nov	132.1 mm (5.2 in)	26 November 1950
Dec	56.6 mm (2.2 in)	19 December 1986

Period of Record Coverage

1964 to 1981

8 years of record at Petersham 3 N, 1964 to 1981. 8 years have data for under 90 percent of days and are left out of rankings: 1964, 1966, 1967, 1969, 1970, 1976, 1980, 1981.

Latest Records

Latest records at Petersham 3 N
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 December 1996	Petersham 3 N, US	daily rain	25.4 mm (1.0 in)	2.5 mm (0.10 in)	31 years	19 of 100 (Routine)
11 December 1996	Petersham 3 N, US	daily snow depth	35.6 cm (14.0 in)	12.7 cm (5.0 in)	19 years	24 of 100 (Routine)
10 December 1996	Petersham 3 N, US	daily snow depth	40.6 cm (16.0 in)	17.7 cm (7.0 in)	19 years	30 of 100 (Routine)
9 December 1996	Petersham 3 N, US	daily snow depth	43.2 cm (17.0 in)	22.9 cm (9.0 in)	19 years	36 of 100 (Notable)
8 December 1996	Petersham 3 N, US	monthly snowfall	50.8 cm (20.0 in)	3.8 cm (1.5 in)	80 years	47 of 100 (Notable)
8 December 1996	Petersham 3 N, US	monthly snow depth	50.8 cm (20.0 in)	10.2 cm (4.0 in)	3 years	27 of 100 (Routine)
2 December 1996	Petersham 3 N, US	monthly rain (Tie)	56.6 mm (2.2 in)	tie	9 years	5 of 100 (Routine)
9 October 1996	Petersham 3 N, US	daily rain	55.9 mm (2.2 in)	21.1 mm (0.8 in)	74 years	45 of 100 (Notable)
18 September 1996	Petersham 3 N, US	daily rain	68.6 mm (2.7 in)	29.2 mm (1.1 in)	38 years	36 of 100 (Notable)
14 July 1996	Petersham 3 N, US	daily rain	78.2 mm (3.1 in)	34.8 mm (1.4 in)	10 years	38 of 100 (Notable)
4 July 1996	Petersham 3 N, US	daily rain	39.4 mm (1.6 in)	18.6 mm (0.7 in)	52 years	37 of 100 (Notable)
9 June 1996	Petersham 3 N, US	daily rain	51.6 mm (2.0 in)	18.1 mm (0.7 in)	73 years	41 of 100 (Notable)
4 June 1996	Petersham 3 N, US	daily rain (Tie)	30.5 mm (1.2 in)	tie	13 years	2 of 100 (Routine)
12 May 1996	Petersham 3 N, US	daily rain	33.0 mm (1.3 in)	3.8 mm (0.15 in)	44 years	24 of 100 (Routine)
17 April 1996	Petersham 3 N, US	daily rain	57.2 mm (2.3 in)	28.2 mm (1.1 in)	77 years	55 of 100 (Notable)
10 April 1996	Petersham 3 N, US	daily snowfall	33.0 cm (13.0 in)	22.8 cm (9.0 in)	67 years	52 of 100 (Notable)
7 March 1996	Petersham 3 N, US	daily snowfall	17.0 cm (6.7 in)	1.8 cm (0.7 in)	78 years	33 of 100 (Routine)
3 March 1996	Petersham 3 N, US	daily snowfall	28.7 cm (11.3 in)	8.4 cm (3.3 in)	48 years	32 of 100 (Routine)
28 January 1996	Petersham 3 N, US	daily rain	34.3 mm (1.4 in)	20.6 mm (0.8 in)	1 year	29 of 100 (Routine)
17 January 1996	Petersham 3 N, US	daily snow depth	55.9 cm (22.0 in)	5.1 cm (2.0 in)	13 years	12 of 100 (Routine)

Extremes by Year

1913 to 1996

Yearly extremes at Petersham 3 N: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1966	29.2 C (84.5 F)	8
Coldest night (TNn)	-20.6 C (-5.1 F)	1967	-9.7 C (14.5 F)	8
Wettest day (Rx1day)	180.8 mm (7.1 in)	1933	57.2 mm (2.3 in)	75
Wettest five days (Rx5day)	198.2 mm (7.8 in)	1984	83.9 mm (3.3 in)	75
Longest dry spell (CDD)	35 days	1980	16 days	75

Hottest day (TXx)

The hottest day of the year at Petersham 3 N, 1913 to 1996. The record is 34.4 C (93.9 F) in 1966, marked on the chart; the median year is 29.2 C (84.5 F).

Hottest day (TXx) at Petersham 3 N by year
Year	Hottest day (TXx)
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	30.0 C (86.0 F)
1965	n/a
1966	34.4 C (93.9 F)
1967	25.0 C (77.0 F)
1968	n/a
1969	28.3 C (82.9 F)
1970	15.6 C (60.1 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	26.7 C (80.1 F)
1977	n/a
1978	n/a
1979	n/a
1980	31.7 C (89.1 F)
1981	31.7 C (89.1 F)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a

Coldest night (TNn)

The coldest night of the year at Petersham 3 N, 1913 to 1996. The record is -20.6 C (-5.1 F) in 1967, marked on the chart; the median year is -9.7 C (14.5 F).

Coldest night (TNn) at Petersham 3 N by year
Year	Coldest night (TNn)
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	2.8 C (37.0 F)
1965	n/a
1966	5.0 C (41.0 F)
1967	-20.6 C (-5.1 F)
1968	n/a
1969	-14.4 C (6.1 F)
1970	-13.3 C (8.1 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	-2.2 C (28.0 F)
1977	n/a
1978	n/a
1979	n/a
1980	-11.1 C (12.0 F)
1981	-8.3 C (17.1 F)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a

Wettest day (Rx1day)

The wettest day of the year at Petersham 3 N, 1913 to 1996. The record is 180.8 mm (7.1 in) in 1933, marked on the chart; the median year is 57.2 mm (2.3 in).

Wettest day (Rx1day) at Petersham 3 N by year
Year	Wettest day (Rx1day)
1913	57.2 mm (2.3 in)
1914	55.4 mm (2.2 in)
1915	78.5 mm (3.1 in)
1916	86.6 mm (3.4 in)
1917	58.9 mm (2.3 in)
1918	75.9 mm (3.0 in)
1919	69.1 mm (2.7 in)
1920	56.9 mm (2.2 in)
1921	76.2 mm (3.0 in)
1922	104.1 mm (4.1 in)
1923	81.0 mm (3.2 in)
1924	48.0 mm (1.9 in)
1926	56.1 mm (2.2 in)
1927	53.8 mm (2.1 in)
1928	103.9 mm (4.1 in)
1929	51.3 mm (2.0 in)
1930	44.5 mm (1.8 in)
1931	70.6 mm (2.8 in)
1932	70.6 mm (2.8 in)
1933	180.8 mm (7.1 in)
1942	51.6 mm (2.0 in)
1943	75.2 mm (3.0 in)
1944	148.6 mm (5.9 in)
1945	56.4 mm (2.2 in)
1946	106.7 mm (4.2 in)
1947	61.7 mm (2.4 in)
1948	41.9 mm (1.6 in)
1949	58.4 mm (2.3 in)
1950	132.1 mm (5.2 in)
1951	50.8 mm (2.0 in)
1952	55.9 mm (2.2 in)
1953	68.8 mm (2.7 in)
1954	50.8 mm (2.0 in)
1955	154.9 mm (6.1 in)
1956	48.5 mm (1.9 in)
1957	53.3 mm (2.1 in)
1958	39.4 mm (1.6 in)
1959	113.3 mm (4.5 in)
1960	88.9 mm (3.5 in)
1961	43.2 mm (1.7 in)
1962	54.6 mm (2.1 in)
1963	34.3 mm (1.4 in)
1964	35.6 mm (1.4 in)
1965	57.2 mm (2.3 in)
1966	52.1 mm (2.1 in)
1967	73.7 mm (2.9 in)
1968	40.6 mm (1.6 in)
1969	62.2 mm (2.4 in)
1970	57.2 mm (2.3 in)
1971	45.7 mm (1.8 in)
1972	86.1 mm (3.4 in)
1973	57.9 mm (2.3 in)
1974	51.6 mm (2.0 in)
1975	57.2 mm (2.3 in)
1976	82.0 mm (3.2 in)
1977	52.1 mm (2.1 in)
1978	56.9 mm (2.2 in)
1979	64.0 mm (2.5 in)
1980	58.9 mm (2.3 in)
1981	46.7 mm (1.8 in)
1982	50.3 mm (2.0 in)
1983	45.7 mm (1.8 in)
1984	81.5 mm (3.2 in)
1985	54.6 mm (2.1 in)
1986	58.9 mm (2.3 in)
1987	57.9 mm (2.3 in)
1988	54.6 mm (2.1 in)
1989	66.0 mm (2.6 in)
1990	53.8 mm (2.1 in)
1991	110.0 mm (4.3 in)
1992	40.4 mm (1.6 in)
1993	67.8 mm (2.7 in)
1994	50.8 mm (2.0 in)
1995	24.9 mm (1.0 in)
1996	78.2 mm (3.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Petersham 3 N, 1913 to 1996. The record is 198.2 mm (7.8 in) in 1984, marked on the chart; the median year is 83.9 mm (3.3 in).

Wettest five days (Rx5day) at Petersham 3 N by year
Year	Wettest five days (Rx5day)
1913	57.2 mm (2.3 in)
1914	49.6 mm (2.0 in)
1915	83.3 mm (3.3 in)
1916	108.2 mm (4.3 in)
1917	78.5 mm (3.1 in)
1918	81.2 mm (3.2 in)
1919	103.9 mm (4.1 in)
1920	104.3 mm (4.1 in)
1921	118.4 mm (4.7 in)
1922	158.7 mm (6.2 in)
1923	101.3 mm (4.0 in)
1924	40.7 mm (1.6 in)
1926	68.6 mm (2.7 in)
1927	67.0 mm (2.6 in)
1928	108.2 mm (4.3 in)
1929	86.9 mm (3.4 in)
1930	43.7 mm (1.7 in)
1931	81.8 mm (3.2 in)
1932	93.7 mm (3.7 in)
1933	192.7 mm (7.6 in)
1942	68.4 mm (2.7 in)
1943	81.6 mm (3.2 in)
1944	180.3 mm (7.1 in)
1945	64.6 mm (2.5 in)
1946	106.7 mm (4.2 in)
1947	103.5 mm (4.1 in)
1948	79.7 mm (3.1 in)
1949	58.4 mm (2.3 in)
1950	137.2 mm (5.4 in)
1951	71.1 mm (2.8 in)
1952	84.3 mm (3.3 in)
1953	109.8 mm (4.3 in)
1954	83.1 mm (3.3 in)
1955	184.5 mm (7.3 in)
1956	78.0 mm (3.1 in)
1957	74.0 mm (2.9 in)
1958	62.0 mm (2.4 in)
1959	131.8 mm (5.2 in)
1960	131.9 mm (5.2 in)
1961	58.4 mm (2.3 in)
1962	114.3 mm (4.5 in)
1963	38.1 mm (1.5 in)
1964	44.5 mm (1.8 in)
1965	61.0 mm (2.4 in)
1966	63.6 mm (2.5 in)
1967	88.9 mm (3.5 in)
1968	71.2 mm (2.8 in)
1969	124.4 mm (4.9 in)
1970	83.9 mm (3.3 in)
1971	62.2 mm (2.4 in)
1972	94.7 mm (3.7 in)
1973	93.2 mm (3.7 in)
1974	65.5 mm (2.6 in)
1975	151.2 mm (6.0 in)
1976	119.4 mm (4.7 in)
1977	74.7 mm (2.9 in)
1978	57.4 mm (2.3 in)
1979	114.5 mm (4.5 in)
1980	87.9 mm (3.5 in)
1981	90.7 mm (3.6 in)
1982	123.9 mm (4.9 in)
1983	72.1 mm (2.8 in)
1984	198.2 mm (7.8 in)
1985	73.7 mm (2.9 in)
1986	93.2 mm (3.7 in)
1987	106.1 mm (4.2 in)
1988	80.1 mm (3.2 in)
1989	93.7 mm (3.7 in)
1990	122.4 mm (4.8 in)
1991	175.3 mm (6.9 in)
1992	54.0 mm (2.1 in)
1993	73.9 mm (2.9 in)
1994	69.3 mm (2.7 in)
1995	33.8 mm (1.3 in)
1996	122.2 mm (4.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Petersham 3 N, 1913 to 1996. The record is 35 days in 1980, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Petersham 3 N by year
Year	Longest dry spell (CDD)
1913	17 days
1914	20 days
1915	23 days
1916	11 days
1917	24 days
1918	19 days
1919	17 days
1920	16 days
1921	14 days
1922	22 days
1923	16 days
1924	14 days
1926	12 days
1927	16 days
1928	15 days
1929	12 days
1930	18 days
1931	14 days
1932	15 days
1933	10 days
1942	26 days
1943	19 days
1944	18 days
1945	12 days
1946	16 days
1947	31 days
1948	15 days
1949	24 days
1950	16 days
1951	17 days
1952	20 days
1953	22 days
1954	13 days
1955	11 days
1956	15 days
1957	14 days
1958	15 days
1959	15 days
1960	18 days
1961	19 days
1962	17 days
1963	28 days
1964	20 days
1965	21 days
1966	20 days
1967	12 days
1968	18 days
1969	15 days
1970	18 days
1971	13 days
1972	13 days
1973	15 days
1974	15 days
1975	20 days
1976	20 days
1977	14 days
1978	13 days
1979	15 days
1980	35 days
1981	11 days
1982	19 days
1983	19 days
1984	18 days
1985	21 days
1986	14 days
1987	19 days
1988	14 days
1989	12 days
1990	13 days
1991	16 days
1992	15 days
1993	12 days
1994	16 days
1995	11 days
1996	19 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

64 years, 1914 to 1996

A day with at least 59.5 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 163.5 mm (6.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Petersham 3 N: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	59.5 mm (2.3 in)
5 years	78.0 mm (3.1 in)
10 years	93.4 mm (3.7 in)
25 years	117.1 mm (4.6 in)
50 years	138.4 mm (5.4 in)
100 years	163.5 mm (6.4 in)	Longer than the 64 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 64 years of values from 1914 to 1996.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 154.9 mm (6.1 in) in 1955; 148.6 mm (5.9 in) in 1944; 113.3 mm (4.5 in) in 1959.

Download the Data

Data for Petersham 3 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Petersham 3 N threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).