Round Pond Weather Records (USC00067002)

Record envelope, standing records and threshold days for Round Pond (USC00067002), Connecticut, United States, with 56 years of record.

Key Facts for Round Pond

Round Pond (USC00067002) is a weather station in Connecticut, United States at 41.30 latitude and -73.54 longitude, 244 m (800 ft) above sea level.
The station reports from 1948 to 2003, 56 years of record.
2 records set at Round Pond still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Round Pond set a daily record precipitation of 23.6 mm (0.9 in) on 12 April 2003.

About the Station

Location: Connecticut, United States, 41.30 latitude, -73.54 longitude.
Elevation: 244 m (800 ft).
Period of record: 1948 to 2003, 56 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 Round Pond. 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 Round Pond, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	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	-17.8 C (0.0 F)	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

2 standing records

2 records at Round Pond still stand. 1976 holds the most, with 2.

Wettest Day of Each Month

Oct: 180.3 mm (7.1 in)

The wettest day on record for each calendar month at Round Pond. The most was 180.3 mm (7.1 in) on 16 October 1955.

Record daily precipitation for each month at Round Pond
Month	Record daily precipitation (mm)	Date
Jan	96.5 mm (3.8 in)	26 January 1986
Feb	66.8 mm (2.6 in)	28 February 1958
Mar	109.5 mm (4.3 in)	19 March 1983
Apr	118.6 mm (4.7 in)	10 April 1980
May	106.4 mm (4.2 in)	15 May 1978
Jun	114.3 mm (4.5 in)	17 June 2001
Jul	80.3 mm (3.2 in)	16 July 1992
Aug	170.2 mm (6.7 in)	13 August 1955
Sep	171.5 mm (6.8 in)	17 September 1999
Oct	180.3 mm (7.1 in)	16 October 1955
Nov	85.6 mm (3.4 in)	23 November 1992
Dec	71.1 mm (2.8 in)	11 December 1952

Period of Record Coverage

1976 to 1976

1 years of record at Round Pond, 1976 to 1976. 1 years have data for under 90 percent of days and are left out of rankings: 1976.

Latest Records

Latest records at Round Pond
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 April 2003	Round Pond, US	daily rain	23.6 mm (0.9 in)	13.4 mm (0.5 in)	48 years	20 of 100 (Routine)
9 April 2003	Round Pond, US	daily rain (Tie)	21.6 mm (0.9 in)	tie	20 years	2 of 100 (Routine)
22 February 2003	Round Pond, US	daily rain	38.4 mm (1.5 in)	16.6 mm (0.7 in)	21 years	26 of 100 (Routine)
17 February 2003	Round Pond, US	daily rain	45.7 mm (1.8 in)	28.9 mm (1.1 in)	48 years	45 of 100 (Notable)
25 December 2002	Round Pond, US	daily rain	44.5 mm (1.8 in)	2.6 mm (0.10 in)	16 years	11 of 100 (Routine)
12 October 2002	Round Pond, US	daily rain	52.8 mm (2.1 in)	35.8 mm (1.4 in)	43 years	34 of 100 (Routine)
2 September 2002	Round Pond, US	daily rain	35.6 mm (1.4 in)	6.9 mm (0.27 in)	20 years	14 of 100 (Routine)
20 July 2002	Round Pond, US	daily rain	44.2 mm (1.7 in)	10.7 mm (0.4 in)	31 years	22 of 100 (Routine)
14 May 2002	Round Pond, US	daily rain	33.8 mm (1.3 in)	15.8 mm (0.6 in)	1 year	16 of 100 (Routine)
3 March 2002	Round Pond, US	daily rain	40.6 mm (1.6 in)	18.5 mm (0.7 in)	8 years	19 of 100 (Routine)
21 September 2001	Round Pond, US	daily rain	42.9 mm (1.7 in)	0.7 mm (0.03 in)	40 years	17 of 100 (Routine)
5 September 2001	Round Pond, US	daily rain	21.6 mm (0.9 in)	5.6 mm (0.22 in)	10 years	11 of 100 (Routine)
18 June 2001	Round Pond, US	daily rain	18.3 mm (0.7 in)	0.3 mm (0.01 in)	4 years	6 of 100 (Routine)
17 June 2001	Round Pond, US	monthly rain	114.3 mm (4.5 in)	22.4 mm (0.9 in)	49 years	45 of 100 (Notable)
2 June 2001	Round Pond, US	daily rain	36.1 mm (1.4 in)	8.9 mm (0.35 in)	48 years	25 of 100 (Routine)
26 May 2001	Round Pond, US	daily rain	19.1 mm (0.8 in)	3.4 mm (0.13 in)	3 years	7 of 100 (Routine)
22 May 2001	Round Pond, US	daily rain	26.2 mm (1.0 in)	10.2 mm (0.4 in)	12 years	15 of 100 (Routine)
6 February 2001	Round Pond, US	daily rain	33.0 mm (1.3 in)	5.1 mm (0.20 in)	17 years	14 of 100 (Routine)
17 December 2000	Round Pond, US	daily rain	38.1 mm (1.5 in)	0.8 mm (0.03 in)	26 years	12 of 100 (Routine)
20 September 2000	Round Pond, US	daily rain	33.0 mm (1.3 in)	3.5 mm (0.14 in)	40 years	18 of 100 (Routine)

Extremes by Year

1948 to 2003

Yearly extremes at Round Pond: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	-17.8 C (0.0 F)	1976	-17.8 C (0.0 F)	1
Wettest day (Rx1day)	180.3 mm (7.1 in)	1955	72.4 mm (2.9 in)	56
Wettest five days (Rx5day)	352.6 mm (13.9 in)	1955	114.2 mm (4.5 in)	56
Longest dry spell (CDD)	29 days	2001	18 days	56

Hottest day (TXx)

The hottest day of the year at Round Pond, 1948 to 2003. The record is -17.8 C (0.0 F) in 1976, marked on the chart; the median year is -17.8 C (0.0 F).

Hottest day (TXx) at Round Pond 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	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	-17.8 C (0.0 F)
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
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a

Wettest day (Rx1day)

The wettest day of the year at Round Pond, 1948 to 2003. The record is 180.3 mm (7.1 in) in 1955, marked on the chart; the median year is 72.4 mm (2.9 in).

Wettest day (Rx1day) at Round Pond by year
Year	Wettest day (Rx1day)
1948	61.0 mm (2.4 in)
1949	39.4 mm (1.6 in)
1950	59.7 mm (2.4 in)
1951	63.5 mm (2.5 in)
1952	91.9 mm (3.6 in)
1953	80.5 mm (3.2 in)
1954	111.8 mm (4.4 in)
1955	180.3 mm (7.1 in)
1956	64.0 mm (2.5 in)
1957	57.7 mm (2.3 in)
1958	66.8 mm (2.6 in)
1959	74.2 mm (2.9 in)
1960	72.4 mm (2.9 in)
1961	48.3 mm (1.9 in)
1962	63.0 mm (2.5 in)
1963	57.7 mm (2.3 in)
1964	44.7 mm (1.8 in)
1965	46.5 mm (1.8 in)
1966	81.3 mm (3.2 in)
1967	53.8 mm (2.1 in)
1968	92.7 mm (3.6 in)
1969	61.5 mm (2.4 in)
1970	37.6 mm (1.5 in)
1971	129.0 mm (5.1 in)
1972	131.6 mm (5.2 in)
1973	83.6 mm (3.3 in)
1974	81.3 mm (3.2 in)
1975	68.6 mm (2.7 in)
1976	66.5 mm (2.6 in)
1977	78.2 mm (3.1 in)
1978	106.4 mm (4.2 in)
1979	67.3 mm (2.6 in)
1980	118.6 mm (4.7 in)
1981	52.6 mm (2.1 in)
1982	63.8 mm (2.5 in)
1983	109.5 mm (4.3 in)
1984	72.4 mm (2.9 in)
1985	104.6 mm (4.1 in)
1986	96.5 mm (3.8 in)
1987	97.5 mm (3.8 in)
1988	73.2 mm (2.9 in)
1989	102.4 mm (4.0 in)
1990	75.4 mm (3.0 in)
1991	80.5 mm (3.2 in)
1992	85.6 mm (3.4 in)
1993	58.4 mm (2.3 in)
1994	55.4 mm (2.2 in)
1995	66.5 mm (2.6 in)
1996	103.1 mm (4.1 in)
1997	34.3 mm (1.4 in)
1998	58.7 mm (2.3 in)
1999	171.5 mm (6.8 in)
2000	90.7 mm (3.6 in)
2001	114.3 mm (4.5 in)
2002	57.7 mm (2.3 in)
2003	54.6 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Round Pond, 1948 to 2003. The record is 352.6 mm (13.9 in) in 1955, marked on the chart; the median year is 114.2 mm (4.5 in).

Wettest five days (Rx5day) at Round Pond by year
Year	Wettest five days (Rx5day)
1948	101.6 mm (4.0 in)
1949	125.5 mm (4.9 in)
1950	118.2 mm (4.7 in)
1951	143.3 mm (5.6 in)
1952	145.0 mm (5.7 in)
1953	115.3 mm (4.5 in)
1954	119.4 mm (4.7 in)
1955	352.6 mm (13.9 in)
1956	88.6 mm (3.5 in)
1957	86.4 mm (3.4 in)
1958	121.4 mm (4.8 in)
1959	86.9 mm (3.4 in)
1960	124.7 mm (4.9 in)
1961	76.0 mm (3.0 in)
1962	81.3 mm (3.2 in)
1963	112.7 mm (4.4 in)
1964	59.9 mm (2.4 in)
1965	58.2 mm (2.3 in)
1966	87.1 mm (3.4 in)
1967	81.2 mm (3.2 in)
1968	117.6 mm (4.6 in)
1969	97.0 mm (3.8 in)
1970	74.7 mm (2.9 in)
1971	162.5 mm (6.4 in)
1972	160.3 mm (6.3 in)
1973	103.4 mm (4.1 in)
1974	125.4 mm (4.9 in)
1975	73.1 mm (2.9 in)
1976	78.9 mm (3.1 in)
1977	113.0 mm (4.4 in)
1978	141.7 mm (5.6 in)
1979	124.7 mm (4.9 in)
1980	126.0 mm (5.0 in)
1981	130.8 mm (5.1 in)
1982	107.2 mm (4.2 in)
1983	148.1 mm (5.8 in)
1984	201.4 mm (7.9 in)
1985	134.6 mm (5.3 in)
1986	132.3 mm (5.2 in)
1987	146.0 mm (5.7 in)
1988	100.4 mm (4.0 in)
1989	178.3 mm (7.0 in)
1990	157.2 mm (6.2 in)
1991	156.7 mm (6.2 in)
1992	101.1 mm (4.0 in)
1993	80.2 mm (3.2 in)
1994	106.5 mm (4.2 in)
1995	94.7 mm (3.7 in)
1996	135.6 mm (5.3 in)
1997	56.9 mm (2.2 in)
1998	92.0 mm (3.6 in)
1999	241.4 mm (9.5 in)
2000	101.1 mm (4.0 in)
2001	140.2 mm (5.5 in)
2002	104.6 mm (4.1 in)
2003	93.2 mm (3.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Round Pond, 1948 to 2003. The record is 29 days in 2001, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Round Pond by year
Year	Longest dry spell (CDD)
1948	19 days
1949	21 days
1950	25 days
1951	19 days
1952	25 days
1953	17 days
1954	18 days
1955	15 days
1956	16 days
1957	23 days
1958	20 days
1959	15 days
1960	18 days
1961	16 days
1962	12 days
1963	27 days
1964	24 days
1965	15 days
1966	15 days
1967	14 days
1968	26 days
1969	17 days
1970	16 days
1971	18 days
1972	12 days
1973	15 days
1974	16 days
1975	19 days
1976	22 days
1977	22 days
1978	19 days
1979	12 days
1980	23 days
1981	18 days
1982	22 days
1983	20 days
1984	20 days
1985	19 days
1986	16 days
1987	15 days
1988	19 days
1989	20 days
1990	12 days
1991	15 days
1992	13 days
1993	16 days
1994	17 days
1995	24 days
1996	13 days
1997	11 days
1998	13 days
1999	19 days
2000	12 days
2001	29 days
2002	16 days
2003	21 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

43 years, 1949 to 2002

A day with at least 74.8 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 202.2 mm (8.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Round Pond: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	74.8 mm (2.9 in)
5 years	101.3 mm (4.0 in)
10 years	121.6 mm (4.8 in)
25 years	150.7 mm (5.9 in)
50 years	175.2 mm (6.9 in)	Longer than the 43 years of record
100 years	202.2 mm (8.0 in)	Longer than the 43 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, 43 years of values from 1949 to 2002.

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: 180.3 mm (7.1 in) in 1955; 171.5 mm (6.8 in) in 1999; 131.6 mm (5.2 in) in 1972.

Download the Data

Data for Round Pond standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Round Pond 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).