Ansonia 1 NW Weather Records (USC00060128)

Record envelope, standing records and threshold days for Ansonia 1 NW (USC00060128), Connecticut, United States, with 61 years of record.

Key Facts for Ansonia 1 NW

Ansonia 1 NW (USC00060128) is a weather station in Connecticut, United States at 41.35 latitude and -73.09 longitude, 42 m (136 ft) above sea level.
The station reports from 1966 to 2026, 61 years of record.
1,464 records set at Ansonia 1 NW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Ansonia 1 NW set a daily record precipitation of 52.8 mm (2.1 in) on 22 July 2026.

About the Station

Location: Connecticut, United States, 41.35 latitude, -73.09 longitude.
Elevation: 42 m (136 ft).
Period of record: 1966 to 2026, 61 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 Ansonia 1 NW. 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 Ansonia 1 NW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.3 C (73.9 F)	-22.8 C (-9.0 F)	n/a	n/a
Feb	22.8 C (73.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Mar	23.9 C (75.0 F)	-15.6 C (3.9 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-6.7 C (19.9 F)	n/a	n/a
May	32.2 C (90.0 F)	-1.1 C (30.0 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)	10.0 C (50.0 F)	n/a	n/a
Aug	35.6 C (96.1 F)	10.0 C (50.0 F)	n/a	n/a
Sep	35.0 C (95.0 F)	0.0 C (32.0 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	24.4 C (75.9 F)	-10.6 C (12.9 F)	n/a	n/a
Dec	17.8 C (64.0 F)	-17.8 C (0.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ansonia 1 NW still stand. 2013 holds the most, with 211.

All-Time Record Progression

4 new records

4 all-time records were set at Ansonia 1 NW between 12 January 2011 and 9 February 2013. Each dot is a new record.

When Ansonia 1 NW set new all-time records
Date	Kind	Detail
2011-01-12	Record daily snowfall	Record daily snowfall 38.1 cm (15.0 in)
2011-01-27	Record snow depth	Record snow depth 78.7 cm (31.0 in)
2013-02-09	Record daily snowfall	Record daily snowfall 91.4 cm (36.0 in)
2013-02-09	Record snow depth	Record snow depth 91.4 cm (36.0 in)

Wettest Day of Each Month

Jun: 237.5 mm (9.4 in)

The wettest day on record for each calendar month at Ansonia 1 NW. The most was 237.5 mm (9.4 in) on 6 June 1982.

Record daily precipitation for each month at Ansonia 1 NW
Month	Record daily precipitation (mm)	Date
Jan	94.5 mm (3.7 in)	10 January 2024
Feb	82.3 mm (3.2 in)	9 February 2013
Mar	101.6 mm (4.0 in)	8 March 2013
Apr	162.6 mm (6.4 in)	16 April 2007
May	91.4 mm (3.6 in)	13 May 2006
Jun	237.5 mm (9.4 in)	6 June 1982
Jul	146.3 mm (5.8 in)	5 July 2023
Aug	129.5 mm (5.1 in)	28 August 1971
Sep	154.4 mm (6.1 in)	26 September 2018
Oct	158.5 mm (6.2 in)	20 October 1996
Nov	83.1 mm (3.3 in)	21 November 1986
Dec	82.6 mm (3.3 in)	18 December 2023

Period of Record Coverage

2011 to 2020

10 years of record at Ansonia 1 NW, 2011 to 2020. 7 years have data for under 90 percent of days and are left out of rankings: 2012, 2014, 2015, 2017, 2018, 2019, 2020.

Days with data per year at Ansonia 1 NW
Year	Days with data	Share of year	Complete
2011	337	92%	Yes
2012	297	81%	No
2013	349	96%	Yes
2014	313	86%	No
2015	285	78%	No
2016	342	93%	Yes
2017	328	90%	No
2018	268	73%	No
2019	59	16%	No
2020	67	18%	No

Latest Records

Latest records at Ansonia 1 NW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 July 2026	Ansonia 1 NW, US	daily rain	52.8 mm (2.1 in)	25.9 mm (1.0 in)	28 years	30 of 100 (Routine)
7 July 2026	Ansonia 1 NW, US	daily rain	67.8 mm (2.7 in)	44.7 mm (1.8 in)	41 years	47 of 100 (Notable)
7 February 2026	Ansonia 1 NW, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	40 years	19 of 100 (Routine)
17 January 2026	Ansonia 1 NW, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	36 years	19 of 100 (Routine)
31 October 2025	Ansonia 1 NW, US	daily rain	96.5 mm (3.8 in)	50.0 mm (2.0 in)	36 years	41 of 100 (Notable)
6 May 2025	Ansonia 1 NW, US	daily rain	72.4 mm (2.9 in)	18.6 mm (0.7 in)	8 years	21 of 100 (Routine)
19 August 2024	Ansonia 1 NW, US	daily rain	107.2 mm (4.2 in)	73.7 mm (2.9 in)	33 years	54 of 100 (Notable)
27 June 2024	Ansonia 1 NW, US	daily rain	25.9 mm (1.0 in)	1.3 mm (0.05 in)	54 years	21 of 100 (Routine)
23 June 2024	Ansonia 1 NW, US	daily rain	21.6 mm (0.9 in)	3.1 mm (0.12 in)	13 years	9 of 100 (Routine)
28 May 2024	Ansonia 1 NW, US	daily rain	26.4 mm (1.0 in)	18.8 mm (0.7 in)	58 years	35 of 100 (Notable)
12 April 2024	Ansonia 1 NW, US	daily rain	34.3 mm (1.4 in)	14.5 mm (0.6 in)	21 years	18 of 100 (Routine)
10 March 2024	Ansonia 1 NW, US	daily rain	50.3 mm (2.0 in)	21.1 mm (0.8 in)	30 years	27 of 100 (Routine)
13 January 2024	Ansonia 1 NW, US	daily rain	42.9 mm (1.7 in)	14.5 mm (0.6 in)	0 years	15 of 100 (Routine)
10 January 2024	Ansonia 1 NW, US	monthly rain	94.5 mm (3.7 in)	9.4 mm (0.37 in)	44 years	35 of 100 (Notable)
28 December 2023	Ansonia 1 NW, US	daily rain	62.0 mm (2.4 in)	39.9 mm (1.6 in)	12 years	37 of 100 (Notable)
18 December 2023	Ansonia 1 NW, US	monthly rain	82.6 mm (3.3 in)	0.6 mm (0.02 in)	37 years	26 of 100 (Routine)
22 November 2023	Ansonia 1 NW, US	daily rain	49.5 mm (1.9 in)	14.4 mm (0.6 in)	28 years	23 of 100 (Routine)
30 September 2023	Ansonia 1 NW, US	daily rain	57.2 mm (2.3 in)	19.1 mm (0.8 in)	8 years	17 of 100 (Routine)
8 August 2023	Ansonia 1 NW, US	daily rain	43.7 mm (1.7 in)	1.0 mm (0.04 in)	50 years	20 of 100 (Routine)
5 July 2023	Ansonia 1 NW, US	monthly rain	146.3 mm (5.8 in)	40.9 mm (1.6 in)	22 years	49 of 100 (Notable)

Extremes by Year

1966 to 2026

Yearly extremes at Ansonia 1 NW: 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)	2011	35.0 C (95.0 F)	10
Coldest night (TNn)	-22.8 C (-9.0 F)	2016	-16.9 C (1.5 F)	10
Wettest day (Rx1day)	237.5 mm (9.4 in)	1982	76.2 mm (3.0 in)	59
Wettest five days (Rx5day)	313.4 mm (12.3 in)	1982	115.2 mm (4.5 in)	59
Longest dry spell (CDD)	33 days	2024	17 days	59

Hottest day (TXx)

The hottest day of the year at Ansonia 1 NW, 1966 to 2026. The record is 37.2 C (99.0 F) in 2011, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Ansonia 1 NW by year
Year	Hottest day (TXx)
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
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
2006	n/a
2007	n/a
2010	n/a
2011	37.2 C (99.0 F)
2012	34.4 C (93.9 F)
2013	35.0 C (95.0 F)
2014	31.7 C (89.1 F)
2015	35.0 C (95.0 F)
2016	34.4 C (93.9 F)
2017	35.6 C (96.1 F)
2018	36.1 C (97.0 F)
2019	21.1 C (70.0 F)
2020	35.6 C (96.1 F)
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 Ansonia 1 NW, 1966 to 2026. The record is -22.8 C (-9.0 F) in 2016, marked on the chart; the median year is -16.9 C (1.5 F).

Coldest night (TNn) at Ansonia 1 NW by year
Year	Coldest night (TNn)
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
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
2006	n/a
2007	n/a
2010	n/a
2011	-19.4 C (-2.9 F)
2012	-13.9 C (7.0 F)
2013	-16.7 C (1.9 F)
2014	-20.6 C (-5.1 F)
2015	-15.6 C (3.9 F)
2016	-22.8 C (-9.0 F)
2017	-17.2 C (1.0 F)
2018	-22.8 C (-9.0 F)
2019	-11.7 C (10.9 F)
2020	-14.4 C (6.1 F)
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 Ansonia 1 NW, 1966 to 2026. The record is 237.5 mm (9.4 in) in 1982, marked on the chart; the median year is 76.2 mm (3.0 in).

Wettest day (Rx1day) at Ansonia 1 NW by year
Year	Wettest day (Rx1day)
1966	51.6 mm (2.0 in)
1967	49.0 mm (1.9 in)
1968	77.2 mm (3.0 in)
1969	69.3 mm (2.7 in)
1970	54.6 mm (2.1 in)
1971	129.5 mm (5.1 in)
1972	73.2 mm (2.9 in)
1973	71.4 mm (2.8 in)
1974	94.7 mm (3.7 in)
1975	54.6 mm (2.1 in)
1976	116.8 mm (4.6 in)
1977	76.2 mm (3.0 in)
1978	74.2 mm (2.9 in)
1979	85.1 mm (3.4 in)
1980	137.9 mm (5.4 in)
1981	50.8 mm (2.0 in)
1982	237.5 mm (9.4 in)
1983	98.0 mm (3.9 in)
1984	64.3 mm (2.5 in)
1985	47.0 mm (1.9 in)
1986	83.1 mm (3.3 in)
1987	70.4 mm (2.8 in)
1988	68.6 mm (2.7 in)
1989	102.6 mm (4.0 in)
1990	82.0 mm (3.2 in)
1991	65.0 mm (2.6 in)
1992	116.3 mm (4.6 in)
1993	72.9 mm (2.9 in)
1994	80.5 mm (3.2 in)
1995	74.7 mm (2.9 in)
1996	158.5 mm (6.2 in)
1997	54.6 mm (2.1 in)
1998	85.1 mm (3.4 in)
1999	116.8 mm (4.6 in)
2000	105.4 mm (4.1 in)
2001	52.3 mm (2.1 in)
2002	66.5 mm (2.6 in)
2003	55.6 mm (2.2 in)
2004	87.6 mm (3.4 in)
2005	67.3 mm (2.6 in)
2006	91.4 mm (3.6 in)
2007	162.6 mm (6.4 in)
2010	54.9 mm (2.2 in)
2011	88.9 mm (3.5 in)
2012	66.3 mm (2.6 in)
2013	101.6 mm (4.0 in)
2014	59.2 mm (2.3 in)
2015	55.9 mm (2.2 in)
2016	43.9 mm (1.7 in)
2017	126.7 mm (5.0 in)
2018	154.4 mm (6.1 in)
2019	47.0 mm (1.9 in)
2020	60.5 mm (2.4 in)
2021	98.8 mm (3.9 in)
2022	104.1 mm (4.1 in)
2023	146.3 mm (5.8 in)
2024	107.2 mm (4.2 in)
2025	96.5 mm (3.8 in)
2026	67.8 mm (2.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ansonia 1 NW, 1966 to 2026. The record is 313.4 mm (12.3 in) in 1982, marked on the chart; the median year is 115.2 mm (4.5 in).

Wettest five days (Rx5day) at Ansonia 1 NW by year
Year	Wettest five days (Rx5day)
1966	68.9 mm (2.7 in)
1967	78.5 mm (3.1 in)
1968	96.5 mm (3.8 in)
1969	100.0 mm (3.9 in)
1970	97.3 mm (3.8 in)
1971	141.7 mm (5.6 in)
1972	150.7 mm (5.9 in)
1973	93.8 mm (3.7 in)
1974	131.0 mm (5.2 in)
1975	155.3 mm (6.1 in)
1976	142.2 mm (5.6 in)
1977	103.6 mm (4.1 in)
1978	76.7 mm (3.0 in)
1979	154.5 mm (6.1 in)
1980	140.9 mm (5.5 in)
1981	105.9 mm (4.2 in)
1982	313.4 mm (12.3 in)
1983	122.1 mm (4.8 in)
1984	200.5 mm (7.9 in)
1985	65.8 mm (2.6 in)
1986	111.8 mm (4.4 in)
1987	129.9 mm (5.1 in)
1988	105.4 mm (4.1 in)
1989	179.0 mm (7.0 in)
1990	96.5 mm (3.8 in)
1991	115.2 mm (4.5 in)
1992	117.4 mm (4.6 in)
1993	93.7 mm (3.7 in)
1994	100.4 mm (4.0 in)
1995	76.7 mm (3.0 in)
1996	174.0 mm (6.9 in)
1997	93.6 mm (3.7 in)
1998	88.7 mm (3.5 in)
1999	140.9 mm (5.5 in)
2000	112.8 mm (4.4 in)
2001	131.3 mm (5.2 in)
2002	86.4 mm (3.4 in)
2003	92.3 mm (3.6 in)
2004	138.4 mm (5.4 in)
2005	118.9 mm (4.7 in)
2006	208.2 mm (8.2 in)
2007	201.4 mm (7.9 in)
2010	90.2 mm (3.6 in)
2011	123.2 mm (4.9 in)
2012	77.0 mm (3.0 in)
2013	151.4 mm (6.0 in)
2014	101.6 mm (4.0 in)
2015	63.5 mm (2.5 in)
2016	61.2 mm (2.4 in)
2017	262.1 mm (10.3 in)
2018	174.8 mm (6.9 in)
2019	52.6 mm (2.1 in)
2020	94.0 mm (3.7 in)
2021	119.4 mm (4.7 in)
2022	149.6 mm (5.9 in)
2023	166.1 mm (6.5 in)
2024	137.4 mm (5.4 in)
2025	110.0 mm (4.3 in)
2026	125.5 mm (4.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ansonia 1 NW, 1966 to 2026. The record is 33 days in 2024, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Ansonia 1 NW by year
Year	Longest dry spell (CDD)
1966	20 days
1967	23 days
1968	21 days
1969	17 days
1970	16 days
1971	17 days
1972	11 days
1973	15 days
1974	15 days
1975	19 days
1976	17 days
1977	17 days
1978	19 days
1979	12 days
1980	23 days
1981	17 days
1982	17 days
1983	14 days
1984	20 days
1985	19 days
1986	16 days
1987	19 days
1988	16 days
1989	14 days
1990	17 days
1991	23 days
1992	15 days
1993	18 days
1994	14 days
1995	25 days
1996	11 days
1997	11 days
1998	24 days
1999	11 days
2000	21 days
2001	29 days
2002	13 days
2003	18 days
2004	25 days
2005	14 days
2006	18 days
2007	19 days
2010	21 days
2011	16 days
2012	21 days
2013	19 days
2014	17 days
2015	22 days
2016	17 days
2017	12 days
2018	16 days
2019	13 days
2020	11 days
2021	17 days
2022	12 days
2023	12 days
2024	33 days
2025	12 days
2026	11 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

39 years, 1967 to 2013

A day with at least 78.7 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 222.5 mm (8.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Ansonia 1 NW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	78.7 mm (3.1 in)
5 years	106.6 mm (4.2 in)
10 years	128.8 mm (5.1 in)
25 years	161.7 mm (6.4 in)
50 years	190.2 mm (7.5 in)	Longer than the 39 years of record
100 years	222.5 mm (8.8 in)	Longer than the 39 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, 39 years of values from 1967 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: 237.5 mm (9.4 in) in 1982; 158.5 mm (6.2 in) in 1996; 137.9 mm (5.4 in) in 1980.

Download the Data

Data for Ansonia 1 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ansonia 1 NW 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).