Shelley Threshold Days by Year

3 fixed thresholds counted per year at Shelley (ASN00082092): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Shelley Thresholds

Shelley: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 1992 with 58.
Shelley: days with 25 mm (0.98 in) or more of precipitation in 40 years, most in 1973 with 19.
Shelley: days with 50 mm (1.97 in) or more of precipitation in 31 years, most in 1964 with 4.
3 fixed thresholds have at least one qualifying day at Shelley.

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

40 years with a qualifying day

Days per year at Shelley with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 58 in 1992.

Days with 10 mm (0.39 in) or more of precipitation per year at Shelley
Year	Days	Decade average
1963	33	32.6
1964	48	32.6
1965	21	32.6
1966	32	32.6
1967	14	32.6
1968	45	32.6
1969	35	32.6
1970	41	41.8
1971	41	41.8
1972	25	41.8
1973	54	41.8
1974	57	41.8
1975	56	41.8
1976	35	41.8
1977	31	41.8
1978	45	41.8
1979	33	41.8
1980	35	38.4
1981	52	38.4
1982	18	38.4
1983	44	38.4
1984	37	38.4
1985	30	38.4
1986	42	38.4
1987	37	38.4
1988	43	38.4
1989	46	38.4
1990	48	43.2
1991	48	43.2
1992	58	43.2
1993	37	43.2
1999	25	43.2
2000	47	33.3
2001	35	33.3
2002	28	33.3
2003	32	33.3
2004	38	33.3
2005	37	33.3
2006	16	33.3
2026	19	19

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

First to last qualifying date each year at Shelley
Year	First date	Last date
1963	1963-01-02	1963-12-09
1964	1964-01-09	1964-12-23
1965	1965-04-17	1965-12-02
1966	1966-01-29	1966-12-16
1967	1967-01-29	1967-10-11
1968	1968-01-21	1968-12-26
1969	1969-01-01	1969-12-20
1970	1970-01-02	1970-12-10
1971	1971-01-27	1971-12-31
1972	1972-01-18	1972-11-25
1973	1973-01-13	1973-12-31
1974	1974-01-04	1974-12-10
1975	1975-01-11	1975-12-30
1976	1976-01-06	1976-12-16
1977	1977-01-02	1977-11-30
1978	1978-01-06	1978-12-18
1979	1979-03-03	1979-11-24
1980	1980-01-04	1980-12-29
1981	1981-01-29	1981-12-13
1982	1982-01-13	1982-12-09
1983	1983-02-12	1983-12-07
1984	1984-01-01	1984-11-14
1985	1985-03-18	1985-12-08
1986	1986-01-16	1986-12-17
1987	1987-01-03	1987-12-02
1988	1988-01-02	1988-12-26
1989	1989-01-05	1989-12-26
1990	1990-01-09	1990-10-22
1991	1991-01-01	1991-12-31
1992	1992-01-01	1992-12-25
1993	1993-01-04	1993-12-23
1999	1999-01-22	1999-12-29
2000	2000-02-12	2000-12-23
2001	2001-01-25	2001-12-24
2002	2002-01-22	2002-12-06
2003	2003-01-01	2003-12-22
2004	2004-01-17	2004-12-14
2005	2005-01-20	2005-12-18
2006	2006-01-17	2006-11-13
2026	2026-02-11	2026-07-29

Every Fixed Threshold

Fixed thresholds at Shelley
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	40	58	1992	19
25 mm (0.98 in): Days with 25 mm or more rain	40	19	1973	10
50 mm (1.97 in): Days with 50 mm or more rain	31	4	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

Data for Shelley 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).

Shelley Threshold Days by Year

Key Facts for Shelley Thresholds

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

Every Fixed Threshold

Download the Data

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