Delaware Lake Weather Records (USC00332124)

Record envelope, standing records and threshold days for Delaware Lake (USC00332124), Ohio, United States, with 78 years of record.

Key Facts for Delaware Lake

Delaware Lake (USC00332124) is a weather station in Ohio, United States at 40.36 latitude and -83.07 longitude, 282 m (924 ft) above sea level.
The station reports from 1949 to 2026, 78 years of record.
1,210 records set at Delaware Lake still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Delaware Lake set a daily record precipitation of 38.4 mm (1.5 in) on 14 August 2026.

About the Station

Location: Ohio, United States, 40.36 latitude, -83.07 longitude.
Elevation: 282 m (924 ft).
Period of record: 1949 to 2026, 78 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 Delaware 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 Delaware Lake, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.7 C (53.1 F)	-22.2 C (-8.0 F)	n/a	n/a
Feb	13.9 C (57.0 F)	-23.9 C (-11.0 F)	n/a	n/a
Mar	25.6 C (78.1 F)	-20.0 C (-4.0 F)	n/a	n/a
Apr	25.6 C (78.1 F)	-3.3 C (26.1 F)	n/a	n/a
May	30.6 C (87.1 F)	-2.8 C (27.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	6.7 C (44.1 F)	n/a	n/a
Jul	34.4 C (93.9 F)	7.2 C (45.0 F)	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	24.4 C (75.9 F)	-5.0 C (23.0 F)	n/a	n/a
Nov	25.0 C (77.0 F)	-11.1 C (12.0 F)	n/a	n/a
Dec	21.1 C (70.0 F)	-20.0 C (-4.0 F)	n/a	n/a

Which Years Hold Standing Records

1,210 standing records

1,210 records at Delaware Lake still stand. 1978 holds the most, with 712.

All-Time Record Progression

2 new records

2 all-time records were set at Delaware Lake between 26 June 2009 and 3 July 2019. Each dot is a new record.

When Delaware Lake set new all-time records
Date	Kind	Detail
2009-06-26	Record daily precipitation	Record daily precipitation 101.6 mm (4.0 in)
2019-07-03	Record daily precipitation	Record daily precipitation 102.9 mm (4.1 in)

Wettest Day of Each Month

Jul: 102.9 mm (4.1 in)

The wettest day on record for each calendar month at Delaware Lake. The most was 102.9 mm (4.1 in) on 3 July 2019.

Record daily precipitation for each month at Delaware Lake
Month	Record daily precipitation (mm)	Date
Jan	68.8 mm (2.7 in)	21 January 1959
Feb	49.3 mm (1.9 in)	24 February 1975
Mar	68.8 mm (2.7 in)	10 March 1964
Apr	60.7 mm (2.4 in)	21 April 1964
May	90.7 mm (3.6 in)	19 May 2020
Jun	101.6 mm (4.0 in)	26 June 2009
Jul	102.9 mm (4.1 in)	3 July 2019
Aug	89.7 mm (3.5 in)	23 August 1972
Sep	91.7 mm (3.6 in)	8 September 2020
Oct	55.9 mm (2.2 in)	1 October 1977
Nov	59.7 mm (2.4 in)	29 November 2010
Dec	84.1 mm (3.3 in)	28 December 2015

Period of Record Coverage

1971 to 1980

7 years of record at Delaware Lake, 1971 to 1980. 7 years have data for under 90 percent of days and are left out of rankings: 1971, 1972, 1973, 1974, 1977, 1978, 1980.

Latest Records

Latest records at Delaware Lake
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 August 2026	Delaware Lake, US	daily rain	38.4 mm (1.5 in)	17.6 mm (0.7 in)	51 years	37 of 100 (Notable)
23 May 2026	Delaware Lake, US	daily rain	52.3 mm (2.1 in)	35.3 mm (1.4 in)	8 years	42 of 100 (Notable)
23 April 2026	Delaware Lake, US	daily rain	36.6 mm (1.4 in)	19.6 mm (0.8 in)	72 years	49 of 100 (Notable)
15 April 2026	Delaware Lake, US	daily rain	27.9 mm (1.1 in)	13.9 mm (0.5 in)	12 years	24 of 100 (Routine)
27 March 2026	Delaware Lake, US	daily rain	39.6 mm (1.6 in)	21.8 mm (0.9 in)	48 years	48 of 100 (Notable)
20 February 2026	Delaware Lake, US	daily rain	17.0 mm (0.7 in)	8.6 mm (0.34 in)	52 years	20 of 100 (Routine)
2 December 2025	Delaware Lake, US	daily rain	10.2 mm (0.4 in)	0.8 mm (0.03 in)	72 years	20 of 100 (Routine)
8 October 2025	Delaware Lake, US	daily rain	22.6 mm (0.9 in)	4.3 mm (0.17 in)	70 years	20 of 100 (Routine)
13 August 2025	Delaware Lake, US	daily rain	17.3 mm (0.7 in)	7.4 mm (0.29 in)	68 years	20 of 100 (Routine)
27 June 2025	Delaware Lake, US	daily rain	30.7 mm (1.2 in)	6.1 mm (0.24 in)	10 years	14 of 100 (Routine)
3 May 2025	Delaware Lake, US	daily rain	25.9 mm (1.0 in)	1.3 mm (0.05 in)	14 years	12 of 100 (Routine)
6 June 2024	Delaware Lake, US	daily rain	73.9 mm (2.9 in)	46.0 mm (1.8 in)	38 years	53 of 100 (Notable)
15 March 2024	Delaware Lake, US	daily rain	36.3 mm (1.4 in)	11.4 mm (0.4 in)	51 years	36 of 100 (Notable)
10 January 2024	Delaware Lake, US	daily rain	17.0 mm (0.7 in)	0.2 mm (0.01 in)	73 years	20 of 100 (Routine)
24 August 2023	Delaware Lake, US	daily rain	74.4 mm (2.9 in)	50.5 mm (2.0 in)	8 years	49 of 100 (Notable)
6 April 2023	Delaware Lake, US	daily rain	43.9 mm (1.7 in)	26.4 mm (1.0 in)	57 years	52 of 100 (Notable)
25 March 2023	Delaware Lake, US	daily rain	26.2 mm (1.0 in)	9.4 mm (0.37 in)	64 years	38 of 100 (Notable)
13 January 2023	Delaware Lake, US	daily rain	26.4 mm (1.0 in)	3.0 mm (0.12 in)	63 years	28 of 100 (Routine)
18 February 2022	Delaware Lake, US	daily rain	41.9 mm (1.6 in)	27.7 mm (1.1 in)	66 years	64 of 100 (Major)
4 February 2022	Delaware Lake, US	daily rain	25.7 mm (1.0 in)	7.9 mm (0.31 in)	36 years	27 of 100 (Routine)

Extremes by Year

1949 to 2026

Yearly extremes at Delaware Lake: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1972	25.0 C (77.0 F)	7
Coldest night (TNn)	-23.9 C (-11.0 F)	1978	-18.9 C (-2.0 F)	7
Wettest day (Rx1day)	102.9 mm (4.1 in)	2019	50.8 mm (2.0 in)	58
Wettest five days (Rx5day)	145.1 mm (5.7 in)	2019	81.9 mm (3.2 in)	58
Longest dry spell (CDD)	70 days	2009	18 days	58

Hottest day (TXx)

The hottest day of the year at Delaware Lake, 1949 to 2026. The record is 34.4 C (93.9 F) in 1972, marked on the chart; the median year is 25.0 C (77.0 F).

Hottest day (TXx) at Delaware Lake by year
Year	Hottest day (TXx)
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	21.1 C (70.0 F)
1972	34.4 C (93.9 F)
1973	11.7 C (53.1 F)
1974	25.6 C (78.1 F)
1975	n/a
1976	n/a
1977	25.0 C (77.0 F)
1978	34.4 C (93.9 F)
1979	n/a
1980	11.7 C (53.1 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
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 Delaware Lake, 1949 to 2026. The record is -23.9 C (-11.0 F) in 1978, marked on the chart; the median year is -18.9 C (-2.0 F).

Coldest night (TNn) at Delaware Lake by year
Year	Coldest night (TNn)
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	-11.1 C (12.0 F)
1972	7.2 C (45.0 F)
1973	-20.6 C (-5.1 F)
1974	-17.2 C (1.0 F)
1975	n/a
1976	n/a
1977	-20.0 C (-4.0 F)
1978	-23.9 C (-11.0 F)
1979	n/a
1980	-18.9 C (-2.0 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
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 Delaware Lake, 1949 to 2026. The record is 102.9 mm (4.1 in) in 2019, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Delaware Lake by year
Year	Wettest day (Rx1day)
1949	19.3 mm (0.8 in)
1950	46.0 mm (1.8 in)
1951	36.8 mm (1.4 in)
1952	46.2 mm (1.8 in)
1953	48.3 mm (1.9 in)
1954	43.9 mm (1.7 in)
1955	55.4 mm (2.2 in)
1956	54.6 mm (2.1 in)
1957	48.3 mm (1.9 in)
1958	74.9 mm (2.9 in)
1959	68.8 mm (2.7 in)
1960	36.1 mm (1.4 in)
1961	44.7 mm (1.8 in)
1962	48.5 mm (1.9 in)
1963	56.1 mm (2.2 in)
1964	68.8 mm (2.7 in)
1965	41.1 mm (1.6 in)
1966	46.5 mm (1.8 in)
1967	38.6 mm (1.5 in)
1968	42.4 mm (1.7 in)
1969	44.2 mm (1.7 in)
1970	47.2 mm (1.9 in)
1971	41.7 mm (1.6 in)
1972	89.7 mm (3.5 in)
1973	79.2 mm (3.1 in)
1974	38.9 mm (1.5 in)
1975	49.3 mm (1.9 in)
1976	40.1 mm (1.6 in)
1977	55.9 mm (2.2 in)
1978	64.3 mm (2.5 in)
1979	74.4 mm (2.9 in)
1980	73.9 mm (2.9 in)
1981	57.2 mm (2.3 in)
1982	37.1 mm (1.5 in)
1983	47.2 mm (1.9 in)
1984	43.9 mm (1.7 in)
1985	55.9 mm (2.2 in)
1986	67.1 mm (2.6 in)
1987	30.2 mm (1.2 in)
2008	42.7 mm (1.7 in)
2009	101.6 mm (4.0 in)
2010	59.7 mm (2.4 in)
2011	66.0 mm (2.6 in)
2012	41.1 mm (1.6 in)
2013	64.8 mm (2.6 in)
2014	85.9 mm (3.4 in)
2015	84.1 mm (3.3 in)
2016	99.8 mm (3.9 in)
2017	59.2 mm (2.3 in)
2018	49.0 mm (1.9 in)
2019	102.9 mm (4.1 in)
2020	91.7 mm (3.6 in)
2021	63.0 mm (2.5 in)
2022	41.9 mm (1.6 in)
2023	74.4 mm (2.9 in)
2024	73.9 mm (2.9 in)
2025	31.0 mm (1.2 in)
2026	52.3 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Delaware Lake, 1949 to 2026. The record is 145.1 mm (5.7 in) in 2019, marked on the chart; the median year is 81.9 mm (3.2 in).

Wettest five days (Rx5day) at Delaware Lake by year
Year	Wettest five days (Rx5day)
1949	27.2 mm (1.1 in)
1950	90.7 mm (3.6 in)
1951	54.1 mm (2.1 in)
1952	69.0 mm (2.7 in)
1953	61.2 mm (2.4 in)
1954	65.7 mm (2.6 in)
1955	62.8 mm (2.5 in)
1956	92.2 mm (3.6 in)
1957	88.7 mm (3.5 in)
1958	126.8 mm (5.0 in)
1959	133.5 mm (5.3 in)
1960	48.0 mm (1.9 in)
1961	92.5 mm (3.6 in)
1962	53.1 mm (2.1 in)
1963	86.1 mm (3.4 in)
1964	113.1 mm (4.5 in)
1965	67.1 mm (2.6 in)
1966	107.4 mm (4.2 in)
1967	59.7 mm (2.4 in)
1968	88.1 mm (3.5 in)
1969	70.1 mm (2.8 in)
1970	58.3 mm (2.3 in)
1971	55.2 mm (2.2 in)
1972	107.3 mm (4.2 in)
1973	93.4 mm (3.7 in)
1974	67.1 mm (2.6 in)
1975	82.1 mm (3.2 in)
1976	75.5 mm (3.0 in)
1977	66.8 mm (2.6 in)
1978	67.1 mm (2.6 in)
1979	81.8 mm (3.2 in)
1980	122.0 mm (4.8 in)
1981	99.0 mm (3.9 in)
1982	66.0 mm (2.6 in)
1983	94.9 mm (3.7 in)
1984	50.1 mm (2.0 in)
1985	83.5 mm (3.3 in)
1986	120.7 mm (4.8 in)
1987	60.9 mm (2.4 in)
2008	94.7 mm (3.7 in)
2009	101.6 mm (4.0 in)
2010	86.4 mm (3.4 in)
2011	71.8 mm (2.8 in)
2012	79.3 mm (3.1 in)
2013	110.2 mm (4.3 in)
2014	125.0 mm (4.9 in)
2015	96.5 mm (3.8 in)
2016	108.2 mm (4.3 in)
2017	61.7 mm (2.4 in)
2018	73.7 mm (2.9 in)
2019	145.1 mm (5.7 in)
2020	92.5 mm (3.6 in)
2021	72.2 mm (2.8 in)
2022	51.9 mm (2.0 in)
2023	79.5 mm (3.1 in)
2024	78.2 mm (3.1 in)
2025	97.3 mm (3.8 in)
2026	106.3 mm (4.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Delaware Lake, 1949 to 2026. The record is 70 days in 2009, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Delaware Lake by year
Year	Longest dry spell (CDD)
1949	12 days
1950	11 days
1951	19 days
1952	27 days
1953	21 days
1954	17 days
1955	18 days
1956	12 days
1957	23 days
1958	18 days
1959	15 days
1960	12 days
1961	17 days
1962	18 days
1963	31 days
1964	20 days
1965	20 days
1966	16 days
1967	20 days
1968	17 days
1969	14 days
1970	15 days
1971	12 days
1972	14 days
1973	16 days
1974	23 days
1975	15 days
1976	26 days
1977	15 days
1978	16 days
1979	11 days
1980	12 days
1981	18 days
1982	20 days
1983	21 days
1984	16 days
1985	13 days
1986	17 days
1987	27 days
2008	40 days
2009	70 days
2010	28 days
2011	27 days
2012	22 days
2013	16 days
2014	23 days
2015	27 days
2016	18 days
2017	18 days
2018	18 days
2019	20 days
2020	14 days
2021	15 days
2022	14 days
2023	21 days
2024	16 days
2025	16 days
2026	9 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

45 years, 1950 to 2016

A day with at least 52.7 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 123.1 mm (4.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Delaware 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	52.7 mm (2.1 in)
5 years	68.0 mm (2.7 in)
10 years	79.4 mm (3.1 in)
25 years	95.5 mm (3.8 in)
50 years	108.8 mm (4.3 in)	Longer than the 45 years of record
100 years	123.1 mm (4.8 in)	Longer than the 45 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, 45 years of values from 1950 to 2016.

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: 101.6 mm (4.0 in) in 2009; 99.8 mm (3.9 in) in 2016; 89.7 mm (3.5 in) in 1972.

Download the Data

Data for Delaware Lake standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Delaware 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).