Ripley Threshold Days by Year (USC00227467)

17 fixed thresholds counted per year at Ripley (USC00227467): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ripley Thresholds

Ripley: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 1973 with 62.
Ripley: days with 25 mm (0.98 in) or more of precipitation in 67 years, most in 1946 with 26.
Ripley: days with 50 mm (1.97 in) or more of precipitation in 67 years, most in 1979 with 11.
Ripley: days with a maximum temperature at or above 30 C (86 F) in 59 years, most in 1952 with 126.
17 fixed thresholds have at least one qualifying day at Ripley.

Days at or above 30 C (86 F)

59 years with a qualifying day

Days per year at Ripley with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 126 in 1952.

Days at or above 30 C (86 F) per year at Ripley
Year	Days	Decade average
1900	91	95.7
1901	81	95.7
1902	105	95.7
1903	77	95.7
1906	110	95.7
1907	110	95.7
1952	126	114.4
1953	121	114.4
1955	121	114.4
1956	117	114.4
1957	98	114.4
1958	105	114.4
1959	113	114.4
1960	113	94.9
1961	81	94.9
1962	111	94.9
1963	102	94.9
1967	69	94.9
1968	89	94.9
1969	99	94.9
1970	100	95
1971	94	95
1972	96	95
1973	104	95
1974	72	95
1975	96	95
1976	71	95
1977	124	95
1978	109	95
1979	84	95
1980	114	95.3
1981	94	95.3
1982	93	95.3
1983	92	95.3
1984	96	95.3
1985	93	95.3
1986	113	95.3
1987	107	95.3
1988	88	95.3
1989	63	95.3
1990	88	87.4
1991	88	87.4
1992	44	87.4
1993	99	87.4
1994	97	87.4
1995	92	87.4
1996	79	87.4
1997	69	87.4
1998	123	87.4
1999	95	87.4
2000	102	88.3
2001	79	88.3
2002	94	88.3
2003	60	88.3
2004	59	88.3
2005	101	88.3
2006	101	88.3
2007	121	88.3
2008	78	88.3

For each year, a bar from the first to the last day at Ripley meeting 30 C (86 F).

First to last qualifying date each year at Ripley
Year	First date	Last date
1900	1900-05-06	1900-10-26
1901	1901-04-28	1901-09-12
1902	1902-04-21	1902-09-17
1903	1903-05-24	1903-10-04
1906	1906-04-11	1906-10-22
1907	1907-03-20	1907-10-22
1952	1952-05-01	1952-10-02
1953	1953-05-22	1953-10-24
1955	1955-04-16	1955-10-23
1956	1956-04-28	1956-10-06
1957	1957-04-19	1957-09-21
1958	1958-05-14	1958-09-26
1959	1959-04-20	1959-10-05
1960	1960-04-23	1960-10-04
1961	1961-05-21	1961-10-30
1962	1962-05-06	1962-10-15
1963	1963-05-05	1963-10-27
1967	1967-04-10	1967-10-08
1968	1968-05-26	1968-10-02
1969	1969-05-15	1969-10-05
1970	1970-05-01	1970-10-03
1971	1971-04-20	1971-10-17
1972	1972-04-15	1972-09-26
1973	1973-05-11	1973-10-08
1974	1974-05-17	1974-09-21
1975	1975-04-28	1975-10-15
1976	1976-04-24	1976-10-05
1977	1977-04-14	1977-10-01
1978	1978-04-08	1978-10-13
1979	1979-05-11	1979-10-02
1980	1980-04-23	1980-10-11
1981	1981-04-28	1981-10-06
1982	1982-05-06	1982-10-06
1983	1983-06-04	1983-09-20
1984	1984-05-07	1984-09-26
1985	1985-05-07	1985-09-23
1986	1986-04-07	1986-10-05
1987	1987-04-20	1987-09-18
1988	1988-04-06	1988-09-24
1989	1989-04-23	1989-09-14
1990	1990-05-16	1990-09-30
1991	1991-05-15	1991-09-14
1992	1992-05-17	1992-09-10
1993	1993-05-07	1993-09-26
1994	1994-04-15	1994-10-02
1995	1995-04-10	1995-10-03
1996	1996-05-10	1996-09-11
1997	1997-05-19	1997-09-21
1998	1998-05-13	1998-10-05
1999	1999-04-24	1999-10-04
2000	2000-05-07	2000-10-06
2001	2001-04-10	2001-09-13
2002	2002-04-19	2002-10-03
2003	2003-04-14	2003-09-11
2004	2004-05-08	2004-09-13
2005	2005-05-12	2005-10-20
2006	2006-04-18	2006-10-05
2007	2007-05-01	2007-10-19
2008	2008-05-20	2008-09-30

Every Fixed Threshold

Fixed thresholds at Ripley
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	59	126	1952	78
35 C (95 F): Days	54	64	1980	16
40 C (104 F): Days	7	7	1980	5
90 F (32.2 C): Days	59	94	1952	46
100 F (37.8 C): Days	19	27	1980	1
0 C (32 F): Ice days (max	55	19	1978	3
0 C (32 F): Frost days (min	59	103	1968	75
-10 C (14 F): Days with min	55	25	1985	4
-20 C (-4 F): Days with min	5	3	1985	3
20 C (68 F): Tropical nights (min	59	95	1900	46
25 C (77 F): Days with min	7	4	1902	2
10 mm (0.39 in): Days with 10 mm or more rain	67	62	1973	39
25 mm (0.98 in): Days with 25 mm or more rain	67	26	1946	19
50 mm (1.97 in): Days with 50 mm or more rain	67	11	1979	4
100 mm (3.94 in): Days with 100 mm or more rain	24	2	1902	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1902	1
10 cm (3.9 in): Days with 10 cm or more snowfall	10	2	1962	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1900.

Download the Data

Data for Ripley 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Ripley Threshold Days by Year (USC00227467)

Key Facts for Ripley Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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