Ferguson Threshold Days by Year

4 fixed thresholds counted per year at Ferguson (ASN00009545): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ferguson Thresholds

Ferguson: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1996 with 49.
Ferguson: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 1974 with 18.
Ferguson: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1965 with 4.
Ferguson: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1945 with 1.
4 fixed thresholds have at least one qualifying day at Ferguson.

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

38 years with a qualifying day

Days per year at Ferguson with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1996.

Days with 10 mm (0.39 in) or more of precipitation per year at Ferguson
Year	Days	Decade average
1939	38	38
1942	44	38.5
1943	37	38.5
1944	28	38.5
1945	42	38.5
1946	43	38.5
1947	37	38.5
1960	33	35.1
1963	45	35.1
1964	48	35.1
1965	38	35.1
1966	28	35.1
1967	36	35.1
1969	18	35.1
1970	34	31.3
1974	43	31.3
1975	31	31.3
1976	30	31.3
1977	24	31.3
1978	32	31.3
1979	25	31.3
1980	41	35
1981	31	35
1982	30	35
1983	39	35
1984	35	35
1985	30	35
1986	36	35
1987	27	35
1988	46	35
1990	39	37.4
1992	40	37.4
1993	34	37.4
1994	34	37.4
1995	34	37.4
1996	49	37.4
1997	32	37.4
1998	37	37.4

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

First to last qualifying date each year at Ferguson
Year	First date	Last date
1939	1939-01-21	1939-11-25
1942	1942-02-28	1942-12-01
1943	1943-01-31	1943-12-07
1944	1944-04-28	1944-12-14
1945	1945-03-24	1945-12-24
1946	1946-04-18	1946-12-23
1947	1947-04-02	1947-12-19
1960	1960-01-01	1960-10-15
1963	1963-01-01	1963-10-17
1964	1964-04-11	1964-12-19
1965	1965-03-26	1965-12-20
1966	1966-04-12	1966-12-27
1967	1967-02-18	1967-11-27
1969	1969-04-06	1969-12-08
1970	1970-02-04	1970-10-26
1974	1974-04-04	1974-10-29
1975	1975-03-22	1975-11-16
1976	1976-01-06	1976-11-27
1977	1977-05-15	1977-10-27
1978	1978-02-17	1978-12-21
1979	1979-01-15	1979-11-13
1980	1980-02-10	1980-12-29
1981	1981-03-06	1981-12-09
1982	1982-01-20	1982-10-04
1983	1983-02-06	1983-11-16
1984	1984-04-11	1984-12-27
1985	1985-02-07	1985-12-19
1986	1986-02-20	1986-11-08
1987	1987-03-15	1987-12-23
1988	1988-03-24	1988-11-06
1990	1990-02-15	1990-11-16
1992	1992-04-17	1992-12-07
1993	1993-03-19	1993-11-10
1994	1994-05-12	1994-10-14
1995	1995-04-14	1995-12-24
1996	1996-05-05	1996-12-12
1997	1997-02-20	1997-11-21
1998	1998-01-16	1998-10-16

Every Fixed Threshold

Fixed thresholds at Ferguson
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	38	49	1996	37
25 mm (0.98 in): Days with 25 mm or more rain	38	18	1974	7
50 mm (1.97 in): Days with 50 mm or more rain	24	4	1965	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

Data for Ferguson 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).

Ferguson Threshold Days by Year

Key Facts for Ferguson Thresholds

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

Every Fixed Threshold

Download the Data

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