Lake Konomoc Weather Records (USC00063989)

Record envelope, standing records and threshold days for Lake Konomoc (USC00063989), Connecticut, United States, with 86 years of record.

Key Facts for Lake Konomoc

Lake Konomoc (USC00063989) is a weather station in Connecticut, United States at 41.40 latitude and -72.18 longitude, 55 m (180 ft) above sea level.
The station reports from 1893 to 1978, 86 years of record.
62 records set at Lake Konomoc still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Lake Konomoc set a daily record precipitation of 79.5 mm (3.1 in) on 26 January 1978.

About the Station

Location: Connecticut, United States, 41.40 latitude, -72.18 longitude.
Elevation: 55 m (180 ft).
Period of record: 1893 to 1978, 86 years.
Eligible elements: prcp.

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 Lake Konomoc. 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 Lake Konomoc, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.0 C (50.0 F)	n/a	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	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

62 standing records

62 records at Lake Konomoc still stand. 1942 holds the most, with 62.

All-Time Record Progression

1 new records

1 all-time records were set at Lake Konomoc between 18 October 1932 and 18 October 1932. Each dot is a new record.

Wettest Day of Each Month

Aug: 124.5 mm (4.9 in)

The wettest day on record for each calendar month at Lake Konomoc. The most was 124.5 mm (4.9 in) on 10 August 1954.

Record daily precipitation for each month at Lake Konomoc
Month	Record daily precipitation (mm)	Date
Jan	80.0 mm (3.1 in)	18 January 1915
Feb	77.0 mm (3.0 in)	20 February 1918
Mar	95.8 mm (3.8 in)	11 March 1901
Apr	106.7 mm (4.2 in)	17 April 1919
May	73.2 mm (2.9 in)	31 May 1940
Jun	73.2 mm (2.9 in)	12 June 1905
Jul	109.2 mm (4.3 in)	12 July 1937
Aug	124.5 mm (4.9 in)	10 August 1954
Sep	119.9 mm (4.7 in)	20 September 1899
Oct	124.5 mm (4.9 in)	18 October 1932
Nov	88.9 mm (3.5 in)	2 November 1897
Dec	79.5 mm (3.1 in)	1 December 1942

Period of Record Coverage

1942 to 1942

1 years of record at Lake Konomoc, 1942 to 1942. 1 years have data for under 90 percent of days and are left out of rankings: 1942.

Latest Records

Latest records at Lake Konomoc
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 January 1978	Lake Konomoc, US	daily rain	79.5 mm (3.1 in)	38.1 mm (1.5 in)	82 years	63 of 100 (Major)
14 January 1978	Lake Konomoc, US	daily rain	55.9 mm (2.2 in)	23.1 mm (0.9 in)	30 years	36 of 100 (Notable)
11 September 1977	Lake Konomoc, US	daily rain	62.0 mm (2.4 in)	30.8 mm (1.2 in)	76 years	48 of 100 (Notable)
23 August 1977	Lake Konomoc, US	daily rain	28.4 mm (1.1 in)	3.0 mm (0.12 in)	64 years	28 of 100 (Routine)
10 January 1977	Lake Konomoc, US	daily rain	50.0 mm (2.0 in)	19.0 mm (0.7 in)	24 years	30 of 100 (Routine)
27 August 1976	Lake Konomoc, US	daily rain	52.8 mm (2.1 in)	16.5 mm (0.6 in)	15 years	22 of 100 (Routine)
9 August 1976	Lake Konomoc, US	daily rain	53.6 mm (2.1 in)	5.1 mm (0.20 in)	49 years	25 of 100 (Routine)
8 July 1976	Lake Konomoc, US	daily rain	34.5 mm (1.4 in)	10.9 mm (0.4 in)	42 years	27 of 100 (Routine)
2 June 1976	Lake Konomoc, US	daily rain	21.6 mm (0.9 in)	2.0 mm (0.08 in)	30 years	18 of 100 (Routine)
2 May 1976	Lake Konomoc, US	daily rain	38.9 mm (1.5 in)	12.2 mm (0.5 in)	57 years	34 of 100 (Routine)
28 January 1976	Lake Konomoc, US	daily rain	60.2 mm (2.4 in)	35.3 mm (1.4 in)	8 years	40 of 100 (Notable)
13 November 1975	Lake Konomoc, US	daily rain	57.2 mm (2.3 in)	8.9 mm (0.35 in)	49 years	27 of 100 (Routine)
4 April 1975	Lake Konomoc, US	daily rain	39.4 mm (1.6 in)	8.9 mm (0.35 in)	14 years	18 of 100 (Routine)
2 December 1974	Lake Konomoc, US	daily rain	31.0 mm (1.2 in)	18.6 mm (0.7 in)	78 years	45 of 100 (Notable)
17 October 1974	Lake Konomoc, US	daily rain	47.8 mm (1.9 in)	12.0 mm (0.5 in)	60 years	32 of 100 (Routine)
22 March 1974	Lake Konomoc, US	daily rain	66.8 mm (2.6 in)	34.8 mm (1.4 in)	47 years	48 of 100 (Notable)
17 March 1974	Lake Konomoc, US	daily rain	41.9 mm (1.6 in)	5.1 mm (0.20 in)	51 years	26 of 100 (Routine)
17 December 1973	Lake Konomoc, US	daily rain	39.1 mm (1.5 in)	16.2 mm (0.6 in)	3 years	20 of 100 (Routine)
30 October 1973	Lake Konomoc, US	daily rain	70.4 mm (2.8 in)	29.3 mm (1.2 in)	19 years	29 of 100 (Routine)
15 August 1973	Lake Konomoc, US	daily rain	94.0 mm (3.7 in)	30.2 mm (1.2 in)	46 years	40 of 100 (Notable)

Extremes by Year

1893 to 1978

Yearly extremes at Lake Konomoc: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	10.0 C (50.0 F)	1942	10.0 C (50.0 F)	1
Wettest day (Rx1day)	124.5 mm (4.9 in)	1932	68.6 mm (2.7 in)	85
Wettest five days (Rx5day)	156.5 mm (6.2 in)	1906	101.6 mm (4.0 in)	83
Longest dry spell (CDD)	41 days	1912	18 days	83

Hottest day (TXx)

The hottest day of the year at Lake Konomoc, 1893 to 1978. The record is 10.0 C (50.0 F) in 1942, marked on the chart; the median year is 10.0 C (50.0 F).

Hottest day (TXx) at Lake Konomoc by year
Year	Hottest day (TXx)
1893	n/a
1894	n/a
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
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
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
1925	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
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1940	n/a
1941	n/a
1942	10.0 C (50.0 F)
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

Wettest day (Rx1day)

The wettest day of the year at Lake Konomoc, 1893 to 1978. The record is 124.5 mm (4.9 in) in 1932, marked on the chart; the median year is 68.6 mm (2.7 in).

Wettest day (Rx1day) at Lake Konomoc by year
Year	Wettest day (Rx1day)
1893	67.6 mm (2.7 in)
1894	59.7 mm (2.4 in)
1895	88.4 mm (3.5 in)
1896	48.3 mm (1.9 in)
1897	88.9 mm (3.5 in)
1898	89.7 mm (3.5 in)
1899	119.9 mm (4.7 in)
1900	79.2 mm (3.1 in)
1901	95.8 mm (3.8 in)
1902	69.9 mm (2.8 in)
1903	46.7 mm (1.8 in)
1904	78.7 mm (3.1 in)
1905	73.2 mm (2.9 in)
1906	109.5 mm (4.3 in)
1907	57.9 mm (2.3 in)
1908	61.0 mm (2.4 in)
1909	49.5 mm (1.9 in)
1910	52.1 mm (2.1 in)
1911	49.5 mm (1.9 in)
1912	58.4 mm (2.3 in)
1913	81.3 mm (3.2 in)
1914	44.5 mm (1.8 in)
1915	80.0 mm (3.1 in)
1916	53.3 mm (2.1 in)
1917	69.9 mm (2.8 in)
1918	87.6 mm (3.4 in)
1919	106.7 mm (4.2 in)
1920	67.3 mm (2.6 in)
1921	47.0 mm (1.9 in)
1922	50.8 mm (2.0 in)
1923	68.6 mm (2.7 in)
1924	74.9 mm (2.9 in)
1925	49.5 mm (1.9 in)
1926	44.5 mm (1.8 in)
1927	87.6 mm (3.4 in)
1928	51.1 mm (2.0 in)
1929	72.4 mm (2.9 in)
1930	48.0 mm (1.9 in)
1931	71.6 mm (2.8 in)
1932	124.5 mm (4.9 in)
1933	45.7 mm (1.8 in)
1934	53.8 mm (2.1 in)
1935	71.4 mm (2.8 in)
1936	76.2 mm (3.0 in)
1937	109.2 mm (4.3 in)
1938	20.3 mm (0.8 in)
1940	73.2 mm (2.9 in)
1941	66.8 mm (2.6 in)
1942	79.5 mm (3.1 in)
1943	42.4 mm (1.7 in)
1944	52.6 mm (2.1 in)
1945	44.2 mm (1.7 in)
1946	98.3 mm (3.9 in)
1947	60.2 mm (2.4 in)
1948	71.1 mm (2.8 in)
1949	90.4 mm (3.6 in)
1950	50.8 mm (2.0 in)
1951	62.0 mm (2.4 in)
1952	73.7 mm (2.9 in)
1953	72.9 mm (2.9 in)
1954	124.5 mm (4.9 in)
1955	84.6 mm (3.3 in)
1956	57.4 mm (2.3 in)
1957	50.0 mm (2.0 in)
1958	66.5 mm (2.6 in)
1959	94.0 mm (3.7 in)
1960	71.9 mm (2.8 in)
1961	74.2 mm (2.9 in)
1962	110.2 mm (4.3 in)
1963	71.4 mm (2.8 in)
1964	72.4 mm (2.9 in)
1965	51.1 mm (2.0 in)
1966	61.0 mm (2.4 in)
1967	58.4 mm (2.3 in)
1968	60.5 mm (2.4 in)
1969	61.0 mm (2.4 in)
1970	59.7 mm (2.4 in)
1971	83.8 mm (3.3 in)
1972	77.7 mm (3.1 in)
1973	94.0 mm (3.7 in)
1974	66.8 mm (2.6 in)
1975	57.2 mm (2.3 in)
1976	60.2 mm (2.4 in)
1977	62.0 mm (2.4 in)
1978	79.5 mm (3.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Lake Konomoc, 1893 to 1978. The record is 156.5 mm (6.2 in) in 1906, marked on the chart; the median year is 101.6 mm (4.0 in).

Wettest five days (Rx5day) at Lake Konomoc by year
Year	Wettest five days (Rx5day)
1893	97.6 mm (3.8 in)
1894	80.0 mm (3.1 in)
1895	108.3 mm (4.3 in)
1896	79.6 mm (3.1 in)
1897	90.9 mm (3.6 in)
1898	115.1 mm (4.5 in)
1899	126.5 mm (5.0 in)
1900	110.0 mm (4.3 in)
1901	126.0 mm (5.0 in)
1902	84.8 mm (3.3 in)
1903	100.8 mm (4.0 in)
1904	95.3 mm (3.8 in)
1905	81.6 mm (3.2 in)
1906	156.5 mm (6.2 in)
1907	94.4 mm (3.7 in)
1908	101.6 mm (4.0 in)
1909	96.5 mm (3.8 in)
1910	81.0 mm (3.2 in)
1911	104.0 mm (4.1 in)
1912	91.5 mm (3.6 in)
1913	115.6 mm (4.6 in)
1914	85.4 mm (3.4 in)
1915	121.2 mm (4.8 in)
1916	86.4 mm (3.4 in)
1917	94.0 mm (3.7 in)
1918	131.7 mm (5.2 in)
1919	115.6 mm (4.6 in)
1920	87.1 mm (3.4 in)
1921	101.4 mm (4.0 in)
1922	108.5 mm (4.3 in)
1923	112.5 mm (4.4 in)
1924	83.3 mm (3.3 in)
1925	73.2 mm (2.9 in)
1926	106.7 mm (4.2 in)
1927	116.1 mm (4.6 in)
1928	68.6 mm (2.7 in)
1929	73.7 mm (2.9 in)
1930	71.1 mm (2.8 in)
1931	103.3 mm (4.1 in)
1932	145.1 mm (5.7 in)
1933	117.6 mm (4.6 in)
1934	123.2 mm (4.9 in)
1935	103.1 mm (4.1 in)
1936	101.9 mm (4.0 in)
1937	n/a
1938	n/a
1940	113.8 mm (4.5 in)
1941	84.1 mm (3.3 in)
1942	113.0 mm (4.4 in)
1943	113.5 mm (4.5 in)
1944	103.4 mm (4.1 in)
1945	75.7 mm (3.0 in)
1946	98.3 mm (3.9 in)
1947	94.5 mm (3.7 in)
1948	95.7 mm (3.8 in)
1949	105.6 mm (4.2 in)
1950	83.6 mm (3.3 in)
1951	135.4 mm (5.3 in)
1952	88.9 mm (3.5 in)
1953	131.1 mm (5.2 in)
1954	128.3 mm (5.1 in)
1955	137.0 mm (5.4 in)
1956	86.4 mm (3.4 in)
1957	98.3 mm (3.9 in)
1958	112.8 mm (4.4 in)
1959	128.0 mm (5.0 in)
1960	100.6 mm (4.0 in)
1961	138.8 mm (5.5 in)
1962	118.3 mm (4.7 in)
1963	97.0 mm (3.8 in)
1964	94.5 mm (3.7 in)
1965	64.1 mm (2.5 in)
1966	77.3 mm (3.0 in)
1967	95.0 mm (3.7 in)
1968	103.4 mm (4.1 in)
1969	114.7 mm (4.5 in)
1970	119.3 mm (4.7 in)
1971	107.5 mm (4.2 in)
1972	102.6 mm (4.0 in)
1973	97.3 mm (3.8 in)
1974	66.8 mm (2.6 in)
1975	110.2 mm (4.3 in)
1976	97.3 mm (3.8 in)
1977	79.5 mm (3.1 in)
1978	104.7 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Lake Konomoc, 1893 to 1978. The record is 41 days in 1912, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Lake Konomoc by year
Year	Longest dry spell (CDD)
1893	13 days
1894	18 days
1895	18 days
1896	15 days
1897	13 days
1898	11 days
1899	16 days
1900	18 days
1901	19 days
1902	16 days
1903	18 days
1904	14 days
1905	15 days
1906	12 days
1907	12 days
1908	23 days
1909	14 days
1910	29 days
1911	32 days
1912	41 days
1913	18 days
1914	41 days
1915	23 days
1916	18 days
1917	21 days
1918	25 days
1919	21 days
1920	26 days
1921	19 days
1922	29 days
1923	25 days
1924	34 days
1925	13 days
1926	16 days
1927	13 days
1928	11 days
1929	18 days
1930	22 days
1931	13 days
1932	16 days
1933	10 days
1934	17 days
1935	18 days
1936	12 days
1937	n/a
1938	n/a
1940	19 days
1941	19 days
1942	11 days
1943	10 days
1944	16 days
1945	16 days
1946	20 days
1947	32 days
1948	18 days
1949	30 days
1950	24 days
1951	12 days
1952	31 days
1953	25 days
1954	20 days
1955	26 days
1956	18 days
1957	26 days
1958	20 days
1959	12 days
1960	31 days
1961	13 days
1962	14 days
1963	24 days
1964	18 days
1965	11 days
1966	16 days
1967	17 days
1968	21 days
1969	12 days
1970	13 days
1971	17 days
1972	12 days
1973	20 days
1974	20 days
1975	19 days
1976	27 days
1977	18 days
1978	6 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

58 years, 1893 to 1976

A day with at least 67.6 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 136.8 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Lake Konomoc: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	67.6 mm (2.7 in)
5 years	85.6 mm (3.4 in)
10 years	97.8 mm (3.9 in)
25 years	113.3 mm (4.5 in)
50 years	125.0 mm (4.9 in)
100 years	136.8 mm (5.4 in)	Longer than the 58 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, 58 years of values from 1893 to 1976.

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: 124.5 mm (4.9 in) in 1932; 124.5 mm (4.9 in) in 1954; 110.2 mm (4.3 in) in 1962.

Download the Data

Data for Lake Konomoc standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lake Konomoc 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 2026-10-17 (17 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).