Sloan 3 S Threshold Days by Year (USC00317974)

15 fixed thresholds counted per year at Sloan 3 S (USC00317974): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sloan 3 S Thresholds

Sloan 3 S: days with 10 mm (0.39 in) or more of precipitation in 84 years, most in 1922 with 61.
Sloan 3 S: days with 25 mm (0.98 in) or more of precipitation in 84 years, most in 1922 with 31.
Sloan 3 S: days with 50 mm (1.97 in) or more of precipitation in 84 years, most in 1958 with 8.
Sloan 3 S: days with a maximum temperature at or above 30 C (86 F) in 56 years, most in 1977 with 125.
15 fixed thresholds have at least one qualifying day at Sloan 3 S.

Days at or above 30 C (86 F)

56 years with a qualifying day

Days per year at Sloan 3 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 125 in 1977.

Days at or above 30 C (86 F) per year at Sloan 3 S
Year	Days	Decade average
1894	85	86.7
1895	89	86.7
1896	104	86.7
1897	82	86.7
1898	85	86.7
1899	75	86.7
1900	108	84
1901	77	84
1902	91	84
1903	71	84
1904	86	84
1905	86	84
1906	81	84
1907	82	84
1908	72	84
1909	86	84
1910	88	91.7
1912	80	91.7
1913	87	91.7
1914	104	91.7
1915	103	91.7
1916	88	91.7
1922	76	84.3
1928	85	84.3
1929	92	84.3
1930	87	88.5
1933	104	88.5
1934	73	88.5
1936	90	88.5
1949	83	83
1952	100	92.4
1953	98	92.4
1954	110	92.4
1955	86	92.4
1956	84	92.4
1957	92	92.4
1958	74	92.4
1959	95	92.4
1960	96	88.6
1961	102	88.6
1962	94	88.6
1963	96	88.6
1965	94	88.6
1966	69	88.6
1967	69	88.6
1968	89	88.6
1970	114	99.7
1971	96	99.7
1972	81	99.7
1973	104	99.7
1975	98	99.7
1976	86	99.7
1977	125	99.7
1978	110	99.7
1979	83	99.7
1980	114	114

For each year, a bar from the first to the last day at Sloan 3 S meeting 30 C (86 F).

First to last qualifying date each year at Sloan 3 S
Year	First date	Last date
1894	1894-03-22	1894-10-03
1895	1895-05-09	1895-10-07
1896	1896-04-01	1896-09-19
1897	1897-04-25	1897-10-06
1898	1898-03-20	1898-10-03
1899	1899-05-03	1899-10-19
1900	1900-05-06	1900-11-01
1901	1901-05-01	1901-10-01
1902	1902-03-30	1902-10-20
1903	1903-05-19	1903-10-07
1904	1904-05-09	1904-10-12
1905	1905-04-29	1905-10-02
1906	1906-04-27	1906-09-30
1907	1907-03-22	1907-09-30
1908	1908-03-18	1908-09-28
1909	1909-04-05	1909-09-18
1910	1910-03-30	1910-10-16
1912	1912-05-03	1912-10-13
1913	1913-04-23	1913-10-01
1914	1914-04-27	1914-10-11
1915	1915-04-19	1915-10-15
1916	1916-04-13	1916-10-09
1922	1922-04-10	1922-11-06
1928	1928-05-02	1928-10-14
1929	1929-03-24	1929-09-29
1930	1930-04-11	1930-09-27
1933	1933-05-05	1933-10-01
1934	1934-04-03	1934-10-20
1936	1936-04-15	1936-09-28
1949	1949-05-07	1949-09-19
1952	1952-04-19	1952-09-19
1953	1953-04-01	1953-09-18
1954	1954-03-25	1954-10-13
1955	1955-03-05	1955-10-01
1956	1956-04-03	1956-09-24
1957	1957-04-21	1957-09-23
1958	1958-04-19	1958-09-25
1959	1959-04-08	1959-10-11
1960	1960-04-17	1960-10-14
1961	1961-03-05	1961-09-29
1962	1962-04-23	1962-10-15
1963	1963-03-26	1963-10-03
1965	1965-04-09	1965-09-24
1966	1966-05-28	1966-10-19
1967	1967-03-15	1967-09-21
1968	1968-03-21	1968-10-03
1970	1970-04-20	1970-09-27
1971	1971-04-13	1971-10-14
1972	1972-04-13	1972-11-03
1973	1973-03-15	1973-10-05
1975	1975-03-24	1975-09-26
1976	1976-03-03	1976-10-08
1977	1977-04-03	1977-10-02
1978	1978-04-02	1978-10-26
1979	1979-04-01	1979-10-21
1980	1980-04-23	1980-10-11

Every Fixed Threshold

Fixed thresholds at Sloan 3 S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	56	125	1977	114
35 C (95 F): Days	55	26	1952	26
90 F (32.2 C): Days	56	76	1980	76
100 F (37.8 C): Days	14	7	1952	1
0 C (32 F): Ice days (max	23	5	1905	2
0 C (32 F): Frost days (min	56	92	1962	77
-10 C (14 F): Days with min	43	11	1977	9
20 C (68 F): Tropical nights (min	56	99	1898	44
25 C (77 F): Days with min	25	3	1896	1
10 mm (0.39 in): Days with 10 mm or more rain	84	61	1922	43
25 mm (0.98 in): Days with 25 mm or more rain	84	31	1922	20
50 mm (1.97 in): Days with 50 mm or more rain	84	8	1958	4
100 mm (3.94 in): Days with 100 mm or more rain	20	2	1960	1
10 cm (3.9 in): Days with 10 cm or more snowfall	11	3	1980	3
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Sloan 3 S 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).

Sloan 3 S Threshold Days by Year (USC00317974)

Key Facts for Sloan 3 S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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