W Otis Weather Records (USC00199371)

Record envelope, standing records and threshold days for W Otis (USC00199371), Massachusetts, United States, with 89 years of record.

Key Facts for W Otis

W Otis (USC00199371) is a weather station in Massachusetts, United States at 42.18 latitude and -73.22 longitude, 395 m (1,295 ft) above sea level.
The station reports from 1926 to 2014, 89 years of record.
1,464 records set at W Otis still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
W Otis set a daily record precipitation of 28.2 mm (1.1 in) on 17 May 2014.

About the Station

Location: Massachusetts, United States, 42.18 latitude, -73.22 longitude.
Elevation: 395 m (1,295 ft).
Period of record: 1926 to 2014, 89 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 W Otis. 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 W Otis, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.9 C (57.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Feb	13.3 C (55.9 F)	-23.3 C (-9.9 F)	n/a	n/a
Mar	25.0 C (77.0 F)	-20.0 C (-4.0 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-6.1 C (21.0 F)	n/a	n/a
May	30.6 C (87.1 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	32.2 C (90.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	33.9 C (93.0 F)	8.9 C (48.0 F)	n/a	n/a
Aug	28.3 C (82.9 F)	6.7 C (44.1 F)	n/a	n/a
Sep	30.0 C (86.0 F)	0.0 C (32.0 F)	n/a	n/a
Oct	24.4 C (75.9 F)	-6.1 C (21.0 F)	n/a	n/a
Nov	18.9 C (66.0 F)	-13.9 C (7.0 F)	n/a	n/a
Dec	17.2 C (63.0 F)	-20.6 C (-5.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at W Otis still stand. 2011 holds the most, with 437.

All-Time Record Progression

1 new records

1 all-time records were set at W Otis between 30 October 2011 and 30 October 2011. Each dot is a new record.

Wettest Day of Each Month

Aug: 233.2 mm (9.2 in)

The wettest day on record for each calendar month at W Otis. The most was 233.2 mm (9.2 in) on 19 August 1955.

Record daily precipitation for each month at W Otis
Month	Record daily precipitation (mm)	Date
Jan	59.2 mm (2.3 in)	25 January 1979
Feb	48.5 mm (1.9 in)	21 February 1981
Mar	88.6 mm (3.5 in)	22 March 1980
Apr	92.5 mm (3.6 in)	5 April 1987
May	98.0 mm (3.9 in)	30 May 1984
Jun	79.2 mm (3.1 in)	7 June 2000
Jul	96.0 mm (3.8 in)	23 July 1994
Aug	233.2 mm (9.2 in)	19 August 1955
Sep	122.4 mm (4.8 in)	17 September 1999
Oct	79.8 mm (3.1 in)	24 October 1990
Nov	186.7 mm (7.4 in)	3 November 1927
Dec	149.6 mm (5.9 in)	31 December 1948

Period of Record Coverage

2011 to 2014

4 years of record at W Otis, 2011 to 2014. 1 years have data for under 90 percent of days and are left out of rankings: 2014.

Latest Records

Latest records at W Otis
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 2014	W Otis, US	daily rain	28.2 mm (1.1 in)	1.3 mm (0.05 in)	24 years	16 of 100 (Routine)
16 April 2014	W Otis, US	daily rain	45.5 mm (1.8 in)	6.1 mm (0.24 in)	84 years	39 of 100 (Notable)
16 April 2014	W Otis, US	monthly snow depth (Tie)	5.1 cm (2.0 in)	tie	3 years	4 of 100 (Routine)
30 March 2014	W Otis, US	daily snow depth	2.5 cm (1.0 in)	2.5 cm (1.0 in)	75 years	20 of 100 (Routine)
29 March 2014	W Otis, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	0 years	11 of 100 (Routine)
28 March 2014	W Otis, US	daily snow depth	7.6 cm (3.0 in)	5.1 cm (2.0 in)	0 years	14 of 100 (Routine)
27 March 2014	W Otis, US	daily snow depth	10.2 cm (4.0 in)	5.1 cm (2.0 in)	0 years	14 of 100 (Routine)
26 March 2014	W Otis, US	daily snow depth	10.2 cm (4.0 in)	2.6 cm (1.0 in)	0 years	11 of 100 (Routine)
25 March 2014	W Otis, US	daily snow depth (Tie)	10.2 cm (4.0 in)	tie	0 years	2 of 100 (Routine)
22 March 2014	W Otis, US	daily snow depth (Tie)	12.7 cm (5.0 in)	tie	0 years	2 of 100 (Routine)
21 March 2014	W Otis, US	daily snow depth (Tie)	15.2 cm (6.0 in)	tie	0 years	2 of 100 (Routine)
19 March 2014	W Otis, US	daily snow depth	15.2 cm (6.0 in)	5.0 cm (2.0 in)	0 years	14 of 100 (Routine)
18 March 2014	W Otis, US	daily snow depth	17.8 cm (7.0 in)	15.3 cm (6.0 in)	0 years	26 of 100 (Routine)
17 March 2014	W Otis, US	daily snow depth	20.3 cm (8.0 in)	15.2 cm (6.0 in)	15 years	30 of 100 (Routine)
16 March 2014	W Otis, US	daily snow depth	20.3 cm (8.0 in)	12.7 cm (5.0 in)	15 years	27 of 100 (Routine)
15 March 2014	W Otis, US	daily snow depth	20.3 cm (8.0 in)	7.6 cm (3.0 in)	15 years	21 of 100 (Routine)
14 March 2014	W Otis, US	daily snow depth	22.9 cm (9.0 in)	17.8 cm (7.0 in)	3 years	30 of 100 (Routine)
13 March 2014	W Otis, US	daily snow depth	22.9 cm (9.0 in)	17.8 cm (7.0 in)	15 years	34 of 100 (Routine)
12 March 2014	W Otis, US	daily snow depth	20.3 cm (8.0 in)	10.1 cm (4.0 in)	0 years	20 of 100 (Routine)
11 March 2014	W Otis, US	daily snow depth	22.9 cm (9.0 in)	5.1 cm (2.0 in)	0 years	14 of 100 (Routine)

Extremes by Year

1926 to 2014

Yearly extremes at W Otis: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.9 C (93.0 F)	2011	32.0 C (89.5 F)	4
Coldest night (TNn)	-27.8 C (-18.0 F)	2011	-23.6 C (-10.5 F)	4
Wettest day (Rx1day)	233.2 mm (9.2 in)	1955	57.7 mm (2.3 in)	78
Wettest five days (Rx5day)	287.1 mm (11.3 in)	1955	93.9 mm (3.7 in)	78
Longest dry spell (CDD)	26 days	1968	16 days	78

Hottest day (TXx)

The hottest day of the year at W Otis, 1926 to 2014. The record is 33.9 C (93.0 F) in 2011, marked on the chart; the median year is 32.0 C (89.5 F).

Hottest day (TXx) at W Otis by year
Year	Hottest day (TXx)
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	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	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
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
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2011	33.9 C (93.0 F)
2012	32.2 C (90.0 F)
2013	31.7 C (89.1 F)
2014	28.3 C (82.9 F)

Coldest night (TNn)

The coldest night of the year at W Otis, 1926 to 2014. The record is -27.8 C (-18.0 F) in 2011, marked on the chart; the median year is -23.6 C (-10.5 F).

Coldest night (TNn) at W Otis by year
Year	Coldest night (TNn)
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	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	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
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
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2011	-27.8 C (-18.0 F)
2012	-21.1 C (-6.0 F)
2013	-23.3 C (-9.9 F)
2014	-23.9 C (-11.0 F)

Wettest day (Rx1day)

The wettest day of the year at W Otis, 1926 to 2014. The record is 233.2 mm (9.2 in) in 1955, marked on the chart; the median year is 57.7 mm (2.3 in).

Wettest day (Rx1day) at W Otis by year
Year	Wettest day (Rx1day)
1926	52.1 mm (2.1 in)
1927	186.7 mm (7.4 in)
1928	69.9 mm (2.8 in)
1929	72.4 mm (2.9 in)
1930	40.1 mm (1.6 in)
1931	42.4 mm (1.7 in)
1932	44.5 mm (1.8 in)
1933	78.7 mm (3.1 in)
1934	69.9 mm (2.8 in)
1935	43.2 mm (1.7 in)
1936	63.5 mm (2.5 in)
1937	109.2 mm (4.3 in)
1938	95.3 mm (3.8 in)
1939	36.1 mm (1.4 in)
1940	40.6 mm (1.6 in)
1941	61.0 mm (2.4 in)
1942	59.7 mm (2.4 in)
1943	48.5 mm (1.9 in)
1944	50.8 mm (2.0 in)
1945	81.3 mm (3.2 in)
1946	54.9 mm (2.2 in)
1947	53.8 mm (2.1 in)
1948	149.6 mm (5.9 in)
1949	57.7 mm (2.3 in)
1950	138.2 mm (5.4 in)
1951	57.7 mm (2.3 in)
1952	65.0 mm (2.6 in)
1953	67.6 mm (2.7 in)
1954	74.7 mm (2.9 in)
1955	233.2 mm (9.2 in)
1956	37.6 mm (1.5 in)
1957	33.3 mm (1.3 in)
1958	43.7 mm (1.7 in)
1959	52.6 mm (2.1 in)
1960	73.2 mm (2.9 in)
1961	51.8 mm (2.0 in)
1962	50.8 mm (2.0 in)
1963	40.9 mm (1.6 in)
1964	50.3 mm (2.0 in)
1965	41.1 mm (1.6 in)
1966	48.0 mm (1.9 in)
1967	44.7 mm (1.8 in)
1968	46.5 mm (1.8 in)
1969	62.7 mm (2.5 in)
1970	39.4 mm (1.6 in)
1971	99.8 mm (3.9 in)
1972	55.9 mm (2.2 in)
1973	61.0 mm (2.4 in)
1974	61.0 mm (2.4 in)
1975	74.7 mm (2.9 in)
1976	86.4 mm (3.4 in)
1977	54.9 mm (2.2 in)
1978	54.6 mm (2.1 in)
1979	73.4 mm (2.9 in)
1980	88.6 mm (3.5 in)
1981	48.5 mm (1.9 in)
1982	64.8 mm (2.6 in)
1983	63.2 mm (2.5 in)
1984	98.0 mm (3.9 in)
1985	76.5 mm (3.0 in)
1986	52.3 mm (2.1 in)
1987	92.5 mm (3.6 in)
1988	56.1 mm (2.2 in)
1989	56.6 mm (2.2 in)
1990	82.6 mm (3.3 in)
1991	69.6 mm (2.7 in)
1992	38.1 mm (1.5 in)
1993	52.8 mm (2.1 in)
1994	96.0 mm (3.8 in)
1995	33.0 mm (1.3 in)
1998	30.5 mm (1.2 in)
1999	122.4 mm (4.8 in)
2000	79.2 mm (3.1 in)
2001	7.1 mm (0.28 in)
2011	104.6 mm (4.1 in)
2012	63.8 mm (2.5 in)
2013	55.6 mm (2.2 in)
2014	45.5 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at W Otis, 1926 to 2014. The record is 287.1 mm (11.3 in) in 1955, marked on the chart; the median year is 93.9 mm (3.7 in).

Wettest five days (Rx5day) at W Otis by year
Year	Wettest five days (Rx5day)
1926	64.3 mm (2.5 in)
1927	193.2 mm (7.6 in)
1928	128.4 mm (5.1 in)
1929	113.6 mm (4.5 in)
1930	62.3 mm (2.5 in)
1931	83.1 mm (3.3 in)
1932	76.2 mm (3.0 in)
1933	123.7 mm (4.9 in)
1934	95.3 mm (3.8 in)
1935	63.1 mm (2.5 in)
1936	107.4 mm (4.2 in)
1937	117.9 mm (4.6 in)
1938	270.6 mm (10.7 in)
1939	58.0 mm (2.3 in)
1940	68.1 mm (2.7 in)
1941	94.0 mm (3.7 in)
1942	90.7 mm (3.6 in)
1943	63.0 mm (2.5 in)
1944	76.2 mm (3.0 in)
1945	93.7 mm (3.7 in)
1946	91.0 mm (3.6 in)
1947	104.4 mm (4.1 in)
1948	190.5 mm (7.5 in)
1949	240.8 mm (9.5 in)
1950	149.4 mm (5.9 in)
1951	85.6 mm (3.4 in)
1952	113.1 mm (4.5 in)
1953	85.6 mm (3.4 in)
1954	146.0 mm (5.7 in)
1955	287.1 mm (11.3 in)
1956	66.2 mm (2.6 in)
1957	61.2 mm (2.4 in)
1958	75.5 mm (3.0 in)
1959	95.1 mm (3.7 in)
1960	121.7 mm (4.8 in)
1961	108.5 mm (4.3 in)
1962	54.7 mm (2.2 in)
1963	83.8 mm (3.3 in)
1964	57.9 mm (2.3 in)
1965	69.6 mm (2.7 in)
1966	64.1 mm (2.5 in)
1967	50.6 mm (2.0 in)
1968	55.6 mm (2.2 in)
1969	130.1 mm (5.1 in)
1970	72.9 mm (2.9 in)
1971	103.9 mm (4.1 in)
1972	105.7 mm (4.2 in)
1973	82.9 mm (3.3 in)
1974	80.0 mm (3.1 in)
1975	153.1 mm (6.0 in)
1976	130.3 mm (5.1 in)
1977	87.4 mm (3.4 in)
1978	73.4 mm (2.9 in)
1979	90.1 mm (3.5 in)
1980	127.0 mm (5.0 in)
1981	102.1 mm (4.0 in)
1982	92.2 mm (3.6 in)
1983	128.4 mm (5.1 in)
1984	228.7 mm (9.0 in)
1985	90.5 mm (3.6 in)
1986	91.0 mm (3.6 in)
1987	145.4 mm (5.7 in)
1988	114.1 mm (4.5 in)
1989	110.7 mm (4.4 in)
1990	135.4 mm (5.3 in)
1991	99.4 mm (3.9 in)
1992	64.0 mm (2.5 in)
1993	100.9 mm (4.0 in)
1994	137.6 mm (5.4 in)
1995	50.3 mm (2.0 in)
1998	31.1 mm (1.2 in)
1999	135.4 mm (5.3 in)
2000	103.9 mm (4.1 in)
2001	13.2 mm (0.5 in)
2011	222.9 mm (8.8 in)
2012	106.2 mm (4.2 in)
2013	76.0 mm (3.0 in)
2014	55.9 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at W Otis, 1926 to 2014. The record is 26 days in 1968, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at W Otis by year
Year	Longest dry spell (CDD)
1926	13 days
1927	13 days
1928	11 days
1929	12 days
1930	23 days
1931	12 days
1932	18 days
1933	9 days
1934	14 days
1935	20 days
1936	11 days
1937	14 days
1938	21 days
1939	20 days
1940	18 days
1941	19 days
1942	14 days
1943	15 days
1944	12 days
1945	8 days
1946	15 days
1947	25 days
1948	13 days
1949	15 days
1950	25 days
1951	12 days
1952	25 days
1953	23 days
1954	14 days
1955	14 days
1956	19 days
1957	17 days
1958	20 days
1959	19 days
1960	17 days
1961	20 days
1962	17 days
1963	23 days
1964	17 days
1965	11 days
1966	20 days
1967	14 days
1968	26 days
1969	15 days
1970	18 days
1971	15 days
1972	16 days
1973	14 days
1974	15 days
1975	26 days
1976	17 days
1977	14 days
1978	14 days
1979	18 days
1980	23 days
1981	25 days
1982	20 days
1983	17 days
1984	19 days
1985	19 days
1986	14 days
1987	18 days
1988	16 days
1989	17 days
1990	12 days
1991	14 days
1992	11 days
1993	26 days
1994	12 days
1995	24 days
1998	11 days
1999	17 days
2000	9 days
2001	10 days
2011	12 days
2012	13 days
2013	13 days
2014	18 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

65 years, 1927 to 2013

A day with at least 60.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 216.5 mm (8.5 in) of rain is expected about once in 100 years.

Rainfall return levels at W Otis: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	60.2 mm (2.4 in)
5 years	84.4 mm (3.3 in)
10 years	105.8 mm (4.2 in)
25 years	141.0 mm (5.6 in)
50 years	174.8 mm (6.9 in)
100 years	216.5 mm (8.5 in)	Longer than the 65 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, 65 years of values from 1927 to 2013.

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: 233.2 mm (9.2 in) in 1955; 186.7 mm (7.4 in) in 1927; 149.6 mm (5.9 in) in 1948.

Download the Data

Data for W Otis standing records by year: CSV or JSON. Field meanings are on the data page.
Data for W Otis 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 2026-10-14 (14 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).

Year	Days with data	Share of year	Complete
2011	360	99%	Yes
2012	349	95%	Yes
2013	362	99%	Yes
2014	164	45%	No