Putnam Lake Weather Records (USC00066655)

Record envelope, standing records and threshold days for Putnam Lake (USC00066655), Connecticut, United States, with 79 years of record.

Key Facts for Putnam Lake

Putnam Lake (USC00066655) is a weather station in Connecticut, United States at 41.08 latitude and -73.64 longitude, 91 m (300 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,458 records set at Putnam Lake still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Putnam Lake set a monthly record daily precipitation of 104.4 mm (4.1 in) on 21 July 2026.

About the Station

Location: Connecticut, United States, 41.08 latitude, -73.64 longitude.
Elevation: 91 m (300 ft).
Period of record: 1948 to 2026, 79 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 Putnam Lake. 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 Putnam Lake, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	14.4 C (57.9 F)	-22.2 C (-8.0 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-19.4 C (-2.9 F)	n/a	n/a
Mar	23.9 C (75.0 F)	-10.0 C (14.0 F)	n/a	n/a
Apr	26.1 C (79.0 F)	-5.0 C (23.0 F)	n/a	n/a
May	35.6 C (96.1 F)	5.0 C (41.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	6.7 C (44.1 F)	n/a	n/a
Jul	37.2 C (99.0 F)	11.1 C (52.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	11.1 C (52.0 F)	n/a	n/a
Sep	32.2 C (90.0 F)	3.3 C (37.9 F)	n/a	n/a
Oct	25.6 C (78.1 F)	-3.9 C (25.0 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-5.6 C (21.9 F)	n/a	n/a
Dec	16.1 C (61.0 F)	-22.8 C (-9.0 F)	n/a	n/a

Which Years Hold Standing Records

1,458 standing records

1,458 records at Putnam Lake still stand. 2016 holds the most, with 440.

All-Time Record Progression

2 new records

2 all-time records were set at Putnam Lake between 17 September 1999 and 2 September 2021. Each dot is a new record.

When Putnam Lake set new all-time records
Date	Kind	Detail
1999-09-17	Record daily precipitation	Record daily precipitation 177.0 mm (7.0 in)
2021-09-02	Record daily precipitation	Record daily precipitation 202.2 mm (8.0 in)

Wettest Day of Each Month

Sep: 202.2 mm (8.0 in)

The wettest day on record for each calendar month at Putnam Lake. The most was 202.2 mm (8.0 in) on 2 September 2021.

Record daily precipitation for each month at Putnam Lake
Month	Record daily precipitation (mm)	Date
Jan	91.9 mm (3.6 in)	21 January 1979
Feb	68.6 mm (2.7 in)	8 February 1965
Mar	96.8 mm (3.8 in)	22 March 1980
Apr	111.0 mm (4.4 in)	10 April 1980
May	113.8 mm (4.5 in)	17 May 1989
Jun	151.1 mm (5.9 in)	19 June 1972
Jul	104.4 mm (4.1 in)	21 July 2026
Aug	151.1 mm (5.9 in)	28 August 1971
Sep	202.2 mm (8.0 in)	2 September 2021
Oct	169.7 mm (6.7 in)	16 October 1955
Nov	97.8 mm (3.9 in)	1 November 1956
Dec	70.1 mm (2.8 in)	3 December 1986

Period of Record Coverage

1965 to 2016

13 years of record at Putnam Lake, 1965 to 2016. 13 years have data for under 90 percent of days and are left out of rankings: 1965, 1969, 1972, 1975, 1977, 1978, 1979, 1980 and others.

Days with data per year at Putnam Lake
Year	Days with data	Share of year	Complete
1965	30	8%	No
1969	31	8%	No
1972	31	8%	No
1975	88	24%	No
1977	31	8%	No
1978	59	16%	No
1979	59	16%	No
1980	92	25%	No
1981	120	33%	No
2012	31	8%	No
2013	121	33%	No
2014	59	16%	No
2016	237	65%	No

Latest Records

Latest records at Putnam Lake
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 July 2026	Putnam Lake, US	monthly rain	104.4 mm (4.1 in)	21.3 mm (0.8 in)	72 years	53 of 100 (Notable)
6 July 2026	Putnam Lake, US	daily rain	69.3 mm (2.7 in)	24.1 mm (0.9 in)	41 years	36 of 100 (Notable)
26 June 2026	Putnam Lake, US	daily rain	30.5 mm (1.2 in)	7.1 mm (0.28 in)	44 years	25 of 100 (Routine)
16 March 2026	Putnam Lake, US	daily rain	43.4 mm (1.7 in)	6.1 mm (0.24 in)	72 years	32 of 100 (Routine)
15 July 2025	Putnam Lake, US	daily rain	72.1 mm (2.8 in)	39.6 mm (1.6 in)	12 years	39 of 100 (Notable)
12 December 2024	Putnam Lake, US	daily rain	40.6 mm (1.6 in)	2.5 mm (0.10 in)	72 years	30 of 100 (Routine)
19 August 2024	Putnam Lake, US	daily rain	91.9 mm (3.6 in)	13.2 mm (0.5 in)	69 years	34 of 100 (Routine)
27 June 2024	Putnam Lake, US	daily rain	26.2 mm (1.0 in)	4.1 mm (0.16 in)	32 years	18 of 100 (Routine)
4 April 2024	Putnam Lake, US	daily rain	53.1 mm (2.1 in)	12.0 mm (0.5 in)	42 years	27 of 100 (Routine)
10 March 2024	Putnam Lake, US	daily rain	49.8 mm (2.0 in)	15.5 mm (0.6 in)	13 years	21 of 100 (Routine)
13 January 2024	Putnam Lake, US	daily rain	41.4 mm (1.6 in)	15.5 mm (0.6 in)	5 years	20 of 100 (Routine)
10 January 2024	Putnam Lake, US	daily rain	56.4 mm (2.2 in)	15.5 mm (0.6 in)	8 years	21 of 100 (Routine)
28 December 2023	Putnam Lake, US	daily rain	55.6 mm (2.2 in)	30.7 mm (1.2 in)	58 years	50 of 100 (Notable)
18 December 2023	Putnam Lake, US	daily rain	50.8 mm (2.0 in)	20.1 mm (0.8 in)	22 years	30 of 100 (Routine)
11 December 2023	Putnam Lake, US	daily rain	41.9 mm (1.6 in)	2.0 mm (0.08 in)	53 years	24 of 100 (Routine)
22 November 2023	Putnam Lake, US	daily rain	55.4 mm (2.2 in)	11.7 mm (0.5 in)	60 years	33 of 100 (Routine)
30 September 2023	Putnam Lake, US	daily rain	122.9 mm (4.8 in)	42.9 mm (1.7 in)	60 years	44 of 100 (Notable)
19 September 2023	Putnam Lake, US	daily rain	52.8 mm (2.1 in)	26.9 mm (1.1 in)	44 years	32 of 100 (Routine)
10 September 2023	Putnam Lake, US	daily rain	43.2 mm (1.7 in)	21.1 mm (0.8 in)	24 years	23 of 100 (Routine)
21 May 2023	Putnam Lake, US	daily rain	47.8 mm (1.9 in)	26.0 mm (1.0 in)	49 years	41 of 100 (Notable)

Extremes by Year

1948 to 2026

Yearly extremes at Putnam Lake: 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)	2016	31.1 C (88.0 F)	13
Coldest night (TNn)	-22.8 C (-9.0 F)	1980	-6.1 C (21.0 F)	13
Wettest day (Rx1day)	202.2 mm (8.0 in)	2021	74.2 mm (2.9 in)	74
Wettest five days (Rx5day)	248.7 mm (9.8 in)	1955	105.4 mm (4.1 in)	74
Longest dry spell (CDD)	29 days	2001	16 days	74

Hottest day (TXx)

The hottest day of the year at Putnam Lake, 1948 to 2026. The record is 37.2 C (99.0 F) in 2016, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at Putnam Lake by year
Year	Hottest day (TXx)
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	31.1 C (88.0 F)
1966	n/a
1967	n/a
1968	n/a
1969	24.4 C (75.9 F)
1970	n/a
1971	n/a
1972	32.2 C (90.0 F)
1973	n/a
1974	n/a
1975	25.6 C (78.1 F)
1976	n/a
1977	34.4 C (93.9 F)
1978	30.6 C (87.1 F)
1979	32.8 C (91.0 F)
1980	23.9 C (75.0 F)
1981	35.6 C (96.1 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
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2010	n/a
2011	n/a
2012	25.0 C (77.0 F)
2013	32.2 C (90.0 F)
2014	11.7 C (53.1 F)
2016	37.2 C (99.0 F)
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Putnam Lake, 1948 to 2026. The record is -22.8 C (-9.0 F) in 1980, marked on the chart; the median year is -6.1 C (21.0 F).

Coldest night (TNn) at Putnam Lake by year
Year	Coldest night (TNn)
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	3.3 C (37.9 F)
1966	n/a
1967	n/a
1968	n/a
1969	-3.9 C (25.0 F)
1970	n/a
1971	n/a
1972	11.1 C (52.0 F)
1973	n/a
1974	n/a
1975	-10.0 C (14.0 F)
1976	n/a
1977	12.2 C (54.0 F)
1978	-17.8 C (0.0 F)
1979	-5.6 C (21.9 F)
1980	-22.8 C (-9.0 F)
1981	-22.2 C (-8.0 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
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2010	n/a
2011	n/a
2012	0.0 C (32.0 F)
2013	-6.1 C (21.0 F)
2014	-21.1 C (-6.0 F)
2016	-19.4 C (-2.9 F)
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Putnam Lake, 1948 to 2026. The record is 202.2 mm (8.0 in) in 2021, marked on the chart; the median year is 74.2 mm (2.9 in).

Wettest day (Rx1day) at Putnam Lake by year
Year	Wettest day (Rx1day)
1948	66.8 mm (2.6 in)
1949	73.7 mm (2.9 in)
1950	59.4 mm (2.3 in)
1951	80.5 mm (3.2 in)
1952	71.1 mm (2.8 in)
1953	83.1 mm (3.3 in)
1954	68.6 mm (2.7 in)
1955	169.7 mm (6.7 in)
1956	97.8 mm (3.9 in)
1957	52.1 mm (2.1 in)
1958	67.3 mm (2.6 in)
1959	57.9 mm (2.3 in)
1960	74.4 mm (2.9 in)
1961	73.9 mm (2.9 in)
1962	65.0 mm (2.6 in)
1963	80.0 mm (3.1 in)
1964	27.9 mm (1.1 in)
1965	68.6 mm (2.7 in)
1966	106.7 mm (4.2 in)
1967	67.3 mm (2.6 in)
1968	76.2 mm (3.0 in)
1969	60.7 mm (2.4 in)
1970	51.3 mm (2.0 in)
1971	151.1 mm (5.9 in)
1972	151.1 mm (5.9 in)
1973	52.3 mm (2.1 in)
1974	125.7 mm (4.9 in)
1975	118.1 mm (4.6 in)
1976	107.2 mm (4.2 in)
1977	64.8 mm (2.6 in)
1978	60.2 mm (2.4 in)
1979	91.9 mm (3.6 in)
1980	111.0 mm (4.4 in)
1981	64.0 mm (2.5 in)
1982	60.5 mm (2.4 in)
1983	99.6 mm (3.9 in)
1984	64.5 mm (2.5 in)
1985	101.9 mm (4.0 in)
1986	70.1 mm (2.8 in)
1987	72.1 mm (2.8 in)
1988	57.7 mm (2.3 in)
1989	113.8 mm (4.5 in)
1990	59.7 mm (2.4 in)
1991	65.3 mm (2.6 in)
1992	85.1 mm (3.4 in)
1993	61.0 mm (2.4 in)
1994	48.3 mm (1.9 in)
1995	53.8 mm (2.1 in)
1996	127.5 mm (5.0 in)
1997	61.0 mm (2.4 in)
1998	61.7 mm (2.4 in)
1999	177.0 mm (7.0 in)
2000	81.8 mm (3.2 in)
2001	99.1 mm (3.9 in)
2002	77.5 mm (3.1 in)
2003	50.3 mm (2.0 in)
2004	75.2 mm (3.0 in)
2005	133.4 mm (5.3 in)
2010	96.5 mm (3.8 in)
2011	133.6 mm (5.3 in)
2012	45.7 mm (1.8 in)
2013	37.1 mm (1.5 in)
2014	41.4 mm (1.6 in)
2016	44.7 mm (1.8 in)
2017	98.3 mm (3.9 in)
2018	104.1 mm (4.1 in)
2019	68.6 mm (2.7 in)
2020	75.9 mm (3.0 in)
2021	202.2 mm (8.0 in)
2022	94.2 mm (3.7 in)
2023	122.9 mm (4.8 in)
2024	91.9 mm (3.6 in)
2025	76.2 mm (3.0 in)
2026	104.4 mm (4.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Putnam Lake, 1948 to 2026. The record is 248.7 mm (9.8 in) in 1955, marked on the chart; the median year is 105.4 mm (4.1 in).

Wettest five days (Rx5day) at Putnam Lake by year
Year	Wettest five days (Rx5day)
1948	85.6 mm (3.4 in)
1949	105.9 mm (4.2 in)
1950	67.8 mm (2.7 in)
1951	120.3 mm (4.7 in)
1952	120.6 mm (4.7 in)
1953	155.4 mm (6.1 in)
1954	112.2 mm (4.4 in)
1955	248.7 mm (9.8 in)
1956	111.0 mm (4.4 in)
1957	98.6 mm (3.9 in)
1958	108.3 mm (4.3 in)
1959	85.6 mm (3.4 in)
1960	124.4 mm (4.9 in)
1961	117.1 mm (4.6 in)
1962	77.5 mm (3.1 in)
1963	98.9 mm (3.9 in)
1964	57.1 mm (2.2 in)
1965	78.5 mm (3.1 in)
1966	110.8 mm (4.4 in)
1967	92.4 mm (3.6 in)
1968	139.8 mm (5.5 in)
1969	89.2 mm (3.5 in)
1970	75.9 mm (3.0 in)
1971	225.3 mm (8.9 in)
1972	234.7 mm (9.2 in)
1973	80.0 mm (3.1 in)
1974	163.3 mm (6.4 in)
1975	240.0 mm (9.4 in)
1976	128.2 mm (5.0 in)
1977	143.2 mm (5.6 in)
1978	113.6 mm (4.5 in)
1979	182.1 mm (7.2 in)
1980	117.1 mm (4.6 in)
1981	101.3 mm (4.0 in)
1982	97.1 mm (3.8 in)
1983	104.2 mm (4.1 in)
1984	187.2 mm (7.4 in)
1985	123.2 mm (4.9 in)
1986	71.3 mm (2.8 in)
1987	116.8 mm (4.6 in)
1988	101.3 mm (4.0 in)
1989	141.5 mm (5.6 in)
1990	99.8 mm (3.9 in)
1991	132.3 mm (5.2 in)
1992	101.8 mm (4.0 in)
1993	76.5 mm (3.0 in)
1994	65.1 mm (2.6 in)
1995	59.1 mm (2.3 in)
1996	155.0 mm (6.1 in)
1997	89.3 mm (3.5 in)
1998	97.3 mm (3.8 in)
1999	201.9 mm (7.9 in)
2000	115.6 mm (4.6 in)
2001	122.8 mm (4.8 in)
2002	103.4 mm (4.1 in)
2003	92.0 mm (3.6 in)
2004	104.9 mm (4.1 in)
2005	237.2 mm (9.3 in)
2010	132.7 mm (5.2 in)
2011	167.6 mm (6.6 in)
2012	49.0 mm (1.9 in)
2013	43.8 mm (1.7 in)
2014	57.9 mm (2.3 in)
2016	63.9 mm (2.5 in)
2017	119.4 mm (4.7 in)
2018	98.8 mm (3.9 in)
2019	73.9 mm (2.9 in)
2020	86.8 mm (3.4 in)
2021	210.1 mm (8.3 in)
2022	69.9 mm (2.8 in)
2023	103.4 mm (4.1 in)
2024	109.2 mm (4.3 in)
2025	80.5 mm (3.2 in)
2026	114.9 mm (4.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Putnam Lake, 1948 to 2026. The record is 29 days in 2001, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Putnam Lake by year
Year	Longest dry spell (CDD)
1948	18 days
1949	12 days
1950	16 days
1951	11 days
1952	25 days
1953	20 days
1954	14 days
1955	18 days
1956	16 days
1957	23 days
1958	14 days
1959	17 days
1960	18 days
1961	15 days
1962	14 days
1963	28 days
1964	28 days
1965	16 days
1966	16 days
1967	14 days
1968	26 days
1969	13 days
1970	20 days
1971	18 days
1972	11 days
1973	25 days
1974	15 days
1975	14 days
1976	28 days
1977	19 days
1978	19 days
1979	15 days
1980	23 days
1981	25 days
1982	23 days
1983	14 days
1984	17 days
1985	12 days
1986	16 days
1987	16 days
1988	15 days
1989	15 days
1990	16 days
1991	15 days
1992	15 days
1993	12 days
1994	11 days
1995	25 days
1996	12 days
1997	16 days
1998	14 days
1999	17 days
2000	21 days
2001	29 days
2002	13 days
2003	18 days
2004	27 days
2005	13 days
2010	19 days
2011	17 days
2012	11 days
2013	12 days
2014	12 days
2016	18 days
2017	15 days
2018	15 days
2019	11 days
2020	16 days
2021	17 days
2022	18 days
2023	14 days
2024	21 days
2025	15 days
2026	15 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

48 years, 1949 to 2023

A day with at least 77.6 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 221.7 mm (8.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Putnam Lake: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	77.6 mm (3.1 in)
5 years	104.6 mm (4.1 in)
10 years	126.4 mm (5.0 in)
25 years	159.4 mm (6.3 in)
50 years	188.4 mm (7.4 in)	Longer than the 48 years of record
100 years	221.7 mm (8.7 in)	Longer than the 48 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, 48 years of values from 1949 to 2023.

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: 202.2 mm (8.0 in) in 2021; 169.7 mm (6.7 in) in 1955; 151.1 mm (5.9 in) in 1971.

Download the Data

Data for Putnam Lake standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Putnam Lake 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).