Naponee Threshold Days by Year (USC00255780)

6 fixed thresholds counted per year at Naponee (USC00255780): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Naponee Thresholds

Naponee: days with 10 mm (0.39 in) or more of precipitation in 84 years, most in 1965 with 35.
Naponee: days with 25 mm (0.98 in) or more of precipitation in 84 years, most in 1965 with 15.
Naponee: days with 10 cm (3.9 in) or more of snowfall in 65 years, most in 1944 with 8.
Naponee: days with 50 mm (1.97 in) or more of precipitation in 58 years, most in 1946 with 3.
6 fixed thresholds have at least one qualifying day at Naponee.

Days with 10 mm (0.39 in) or more of precipitation

84 years with a qualifying day

Days per year at Naponee with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 1965.

Days with 10 mm (0.39 in) or more of precipitation per year at Naponee
Year	Days	Decade average
1941	20	20
1942	24	20
1945	15	20
1946	24	20
1947	17	20
1948	16	20
1949	24	20
1950	17	18.2
1951	26	18.2
1952	11	18.2
1953	17	18.2
1954	17	18.2
1955	18	18.2
1956	12	18.2
1957	23	18.2
1958	24	18.2
1959	17	18.2
1960	22	19.7
1961	18	19.7
1962	21	19.7
1963	19	19.7
1964	11	19.7
1965	35	19.7
1966	11	19.7
1967	20	19.7
1968	17	19.7
1969	23	19.7
1970	17	22
1971	22	22
1972	24	22
1973	30	22
1974	16	22
1975	22	22
1976	17	22
1977	22	22
1978	24	22
1979	26	22
1980	17	19
1981	28	19
1982	25	19
1983	21	19
1984	20	19
1985	12	19
1986	16	19
1987	25	19
1988	12	19
1989	14	19
1990	22	21.3
1991	21	21.3
1992	23	21.3
1993	35	21.3
1994	18	21.3
1995	18	21.3
1996	22	21.3
1997	19	21.3
1998	17	21.3
1999	18	21.3
2000	27	21.4
2001	28	21.4
2002	13	21.4
2003	12	21.4
2004	24	21.4
2005	26	21.4
2006	22	21.4
2007	23	21.4
2008	21	21.4
2009	18	21.4
2010	23	19.4
2011	20	19.4
2012	16	19.4
2013	15	19.4
2014	13	19.4
2015	21	19.4
2016	21	19.4
2017	18	19.4
2018	22	19.4
2019	25	19.4
2020	16	18.7
2021	22	18.7
2022	15	18.7
2023	20	18.7
2024	23	18.7
2025	19	18.7
2026	16	18.7

For each year, a bar from the first to the last day at Naponee meeting 10 mm (0.39 in).

First to last qualifying date each year at Naponee
Year	First date	Last date
1941	1941-04-02	1941-12-26
1942	1942-03-25	1942-12-26
1945	1945-04-15	1945-12-24
1946	1946-03-16	1946-11-06
1947	1947-03-31	1947-12-04
1948	1948-02-27	1948-12-24
1949	1949-02-26	1949-10-09
1950	1950-02-12	1950-10-02
1951	1951-01-02	1951-10-03
1952	1952-03-02	1952-12-22
1953	1953-02-20	1953-12-03
1954	1954-02-20	1954-10-08
1955	1955-01-06	1955-09-26
1956	1956-03-21	1956-09-05
1957	1957-03-18	1957-10-14
1958	1958-03-01	1958-11-18
1959	1959-03-21	1959-10-31
1960	1960-01-02	1960-10-19
1961	1961-03-06	1961-12-16
1962	1962-02-15	1962-10-20
1963	1963-03-04	1963-09-23
1964	1964-03-20	1964-11-15
1965	1965-01-23	1965-12-24
1966	1966-02-09	1966-12-27
1967	1967-04-01	1967-10-05
1968	1968-04-03	1968-12-22
1969	1969-01-03	1969-10-30
1970	1970-03-31	1970-09-24
1971	1971-02-19	1971-11-17
1972	1972-03-24	1972-12-16
1973	1973-03-04	1973-12-24
1974	1974-04-04	1974-11-03
1975	1975-02-16	1975-11-26
1976	1976-03-04	1976-10-07
1977	1977-01-05	1977-10-07
1978	1978-01-01	1978-10-22
1979	1979-01-19	1979-11-21
1980	1980-01-20	1980-10-27
1981	1981-03-04	1981-12-01
1982	1982-03-19	1982-12-28
1983	1983-02-02	1983-11-28
1984	1984-02-18	1984-12-14
1985	1985-01-09	1985-10-18
1986	1986-03-12	1986-09-07
1987	1987-03-17	1987-11-13
1988	1988-01-19	1988-09-15
1989	1989-05-18	1989-09-13
1990	1990-01-20	1990-12-30
1991	1991-03-17	1991-12-12
1992	1992-01-01	1992-10-26
1993	1993-01-09	1993-10-15
1994	1994-01-27	1994-12-31
1995	1995-03-07	1995-09-21
1996	1996-04-14	1996-11-17
1997	1997-02-24	1997-12-25
1998	1998-02-10	1998-11-02
1999	1999-04-05	1999-09-12
2000	2000-02-23	2000-11-12
2001	2001-01-30	2001-11-24
2002	2002-01-31	2002-10-30
2003	2003-04-06	2003-08-10
2004	2004-01-12	2004-11-17
2005	2005-01-05	2005-11-29
2006	2006-03-19	2006-12-31
2007	2007-01-21	2007-12-11
2008	2008-04-11	2008-11-11
2009	2009-04-18	2009-12-09
2010	2010-03-09	2010-09-24
2011	2011-01-10	2011-12-04
2012	2012-02-04	2012-12-20
2013	2013-03-30	2013-11-06
2014	2014-04-14	2014-10-02
2015	2015-02-01	2015-12-14
2016	2016-04-17	2016-11-08
2017	2017-03-29	2017-10-03
2018	2018-04-25	2018-12-28
2019	2019-03-14	2019-11-21
2020	2020-01-22	2020-11-10
2021	2021-01-26	2021-10-13
2022	2022-04-30	2022-12-13
2023	2023-02-16	2023-12-15
2024	2024-01-09	2024-11-19
2025	2025-04-25	2025-11-21
2026	2026-04-02	2026-10-01

Every Fixed Threshold

Fixed thresholds at Naponee
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	84	35	1965	16
25 mm (0.98 in): Days with 25 mm or more rain	84	15	1965	6
50 mm (1.97 in): Days with 50 mm or more rain	58	3	1946	1
100 mm (3.94 in): Days with 100 mm or more rain	8	1	1942	1
10 cm (3.9 in): Days with 10 cm or more snowfall	65	8	1944	1
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

Data for Naponee 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). Threshold counts are computed by this site.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Naponee Threshold Days by Year (USC00255780)

Key Facts for Naponee Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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