Cohasset Weather Records (USC00191582)

Record envelope, standing records and threshold days for Cohasset (USC00191582), Massachusetts, United States, with 66 years of record.

Key Facts for Cohasset

Cohasset (USC00191582) is a weather station in Massachusetts, United States at 42.23 latitude and -70.80 longitude, 15 m (49 ft) above sea level.
The station reports from 1895 to 1960, 66 years of record.
1,464 records set at Cohasset still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Massachusetts, United States, 42.23 latitude, -70.80 longitude.
Elevation: 15 m (49 ft).
Period of record: 1895 to 1960, 66 years.
Eligible elements: none yet.

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 Cohasset. 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 Cohasset, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.1 C (70.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Feb	20.6 C (69.1 F)	-18.3 C (-0.9 F)	n/a	n/a
Mar	23.3 C (73.9 F)	-16.1 C (3.0 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-8.9 C (16.0 F)	n/a	n/a
May	33.3 C (91.9 F)	-1.7 C (28.9 F)	n/a	n/a
Jun	36.1 C (97.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	37.2 C (99.0 F)	9.4 C (48.9 F)	n/a	n/a
Aug	37.2 C (99.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	36.1 C (97.0 F)	1.1 C (34.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	28.3 C (82.9 F)	-11.7 C (10.9 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-18.9 C (-2.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cohasset still stand. 1949 holds the most, with 174.

Wettest Day of Each Month

Feb: 157.2 mm (6.2 in)

The wettest day on record for each calendar month at Cohasset. The most was 157.2 mm (6.2 in) on 22 February 1898.

Record daily precipitation for each month at Cohasset
Month	Record daily precipitation (mm)	Date
Jan	60.5 mm (2.4 in)	25 January 1899
Feb	157.2 mm (6.2 in)	22 February 1898
Mar	73.7 mm (2.9 in)	24 March 1903
Apr	80.3 mm (3.2 in)	24 April 1898
May	91.4 mm (3.6 in)	20 May 1901
Jun	58.4 mm (2.3 in)	28 June 1957
Jul	90.2 mm (3.6 in)	14 July 1898
Aug	148.1 mm (5.8 in)	19 August 1955
Sep	110.2 mm (4.3 in)	20 September 1899
Oct	121.2 mm (4.8 in)	13 October 1895
Nov	89.2 mm (3.5 in)	5 November 1955
Dec	64.3 mm (2.5 in)	17 December 1902

Period of Record Coverage

1948 to 1960

13 years of record at Cohasset, 1948 to 1960. 4 years have data for under 90 percent of days and are left out of rankings: 1948, 1957, 1958, 1960.

Days with data per year at Cohasset
Year	Days with data	Share of year	Complete
1948	211	58%	No
1949	357	98%	Yes
1950	357	98%	Yes
1951	358	98%	Yes
1952	362	99%	Yes
1953	357	98%	Yes
1954	342	94%	Yes
1955	348	95%	Yes
1956	330	90%	Yes
1957	315	86%	No
1958	297	81%	No
1959	331	91%	Yes
1960	153	42%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1895 to 1960

Yearly extremes at Cohasset: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	1949	35.0 C (95.0 F)	13
Coldest night (TNn)	-22.2 C (-8.0 F)	1957	-16.1 C (3.0 F)	13
Wettest day (Rx1day)	157.2 mm (6.2 in)	1898	64.2 mm (2.5 in)	22
Wettest five days (Rx5day)	280.9 mm (11.1 in)	1955	95.2 mm (3.7 in)	22
Longest dry spell (CDD)	26 days	1950	18 days	22

Hottest day (TXx)

The hottest day of the year at Cohasset, 1895 to 1960. The record is 37.2 C (99.0 F) in 1949, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Cohasset by year
Year	Hottest day (TXx)
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1948	33.3 C (91.9 F)
1949	37.2 C (99.0 F)
1950	33.3 C (91.9 F)
1951	32.8 C (91.0 F)
1952	36.7 C (98.1 F)
1953	36.1 C (97.0 F)
1954	33.9 C (93.0 F)
1955	36.1 C (97.0 F)
1956	35.6 C (96.1 F)
1957	35.6 C (96.1 F)
1958	33.9 C (93.0 F)
1959	35.0 C (95.0 F)
1960	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Cohasset, 1895 to 1960. The record is -22.2 C (-8.0 F) in 1957, marked on the chart; the median year is -16.1 C (3.0 F).

Coldest night (TNn) at Cohasset by year
Year	Coldest night (TNn)
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1948	-16.7 C (1.9 F)
1949	-13.3 C (8.1 F)
1950	-18.3 C (-0.9 F)
1951	-16.1 C (3.0 F)
1952	-15.0 C (5.0 F)
1953	-12.2 C (10.0 F)
1954	-20.6 C (-5.1 F)
1955	-18.9 C (-2.0 F)
1956	-15.0 C (5.0 F)
1957	-22.2 C (-8.0 F)
1958	-16.1 C (3.0 F)
1959	-15.6 C (3.9 F)
1960	-12.8 C (9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Cohasset, 1895 to 1960. The record is 157.2 mm (6.2 in) in 1898, marked on the chart; the median year is 64.2 mm (2.5 in).

Wettest day (Rx1day) at Cohasset by year
Year	Wettest day (Rx1day)
1895	121.2 mm (4.8 in)
1896	66.8 mm (2.6 in)
1897	64.0 mm (2.5 in)
1898	157.2 mm (6.2 in)
1899	110.2 mm (4.3 in)
1900	57.9 mm (2.3 in)
1901	91.4 mm (3.6 in)
1902	64.3 mm (2.5 in)
1903	73.7 mm (2.9 in)
1948	56.6 mm (2.2 in)
1949	25.7 mm (1.0 in)
1950	82.0 mm (3.2 in)
1951	43.7 mm (1.7 in)
1952	54.9 mm (2.2 in)
1953	69.1 mm (2.7 in)
1954	87.6 mm (3.4 in)
1955	148.1 mm (5.8 in)
1956	50.8 mm (2.0 in)
1957	58.4 mm (2.3 in)
1958	58.4 mm (2.3 in)
1959	56.1 mm (2.2 in)
1960	39.4 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cohasset, 1895 to 1960. The record is 280.9 mm (11.1 in) in 1955, marked on the chart; the median year is 95.2 mm (3.7 in).

Wettest five days (Rx5day) at Cohasset by year
Year	Wettest five days (Rx5day)
1895	123.5 mm (4.9 in)
1896	89.4 mm (3.5 in)
1897	77.0 mm (3.0 in)
1898	160.5 mm (6.3 in)
1899	118.1 mm (4.6 in)
1900	116.3 mm (4.6 in)
1901	97.2 mm (3.8 in)
1902	79.8 mm (3.1 in)
1903	80.3 mm (3.2 in)
1948	93.2 mm (3.7 in)
1949	47.0 mm (1.9 in)
1950	154.4 mm (6.1 in)
1951	80.3 mm (3.2 in)
1952	57.7 mm (2.3 in)
1953	133.4 mm (5.3 in)
1954	125.0 mm (4.9 in)
1955	280.9 mm (11.1 in)
1956	81.3 mm (3.2 in)
1957	90.2 mm (3.6 in)
1958	107.7 mm (4.2 in)
1959	104.1 mm (4.1 in)
1960	41.4 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cohasset, 1895 to 1960. The record is 26 days in 1950, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Cohasset by year
Year	Longest dry spell (CDD)
1895	15 days
1896	14 days
1897	15 days
1898	18 days
1899	22 days
1900	18 days
1901	24 days
1902	25 days
1903	18 days
1948	12 days
1949	17 days
1950	26 days
1951	16 days
1952	16 days
1953	20 days
1954	13 days
1955	25 days
1956	17 days
1957	15 days
1958	22 days
1959	18 days
1960	14 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.

Download the Data

Data for Cohasset standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cohasset 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 2026-10-15 (15 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).