Roelands Threshold Days by Year

4 fixed thresholds counted per year at Roelands (ASN00009657): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roelands Thresholds

Roelands: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1955 with 52.
Roelands: days with 25 mm (0.98 in) or more of precipitation in 74 years, most in 1963 with 14.
Roelands: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1945 with 4.
Roelands: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1945 with 1.
4 fixed thresholds have at least one qualifying day at Roelands.

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

74 years with a qualifying day

Days per year at Roelands with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1955.

Days with 10 mm (0.39 in) or more of precipitation per year at Roelands
Year	Days	Decade average
1942	44	36.1
1943	32	36.1
1944	28	36.1
1945	43	36.1
1946	41	36.1
1947	35	36.1
1948	33	36.1
1949	33	36.1
1950	31	33.2
1951	29	33.2
1952	32	33.2
1953	29	33.2
1954	36	33.2
1955	52	33.2
1956	31	33.2
1957	33	33.2
1958	32	33.2
1959	27	33.2
1960	33	34.7
1961	32	34.7
1962	30	34.7
1963	46	34.7
1964	44	34.7
1965	40	34.7
1966	36	34.7
1967	38	34.7
1968	29	34.7
1969	19	34.7
1970	37	29.6
1971	30	29.6
1972	24	29.6
1973	40	29.6
1974	44	29.6
1975	26	29.6
1976	29	29.6
1977	21	29.6
1978	26	29.6
1979	19	29.6
1980	33	27.1
1981	28	27.1
1982	22	27.1
1983	31	27.1
1984	25	27.1
1985	21	27.1
1986	34	27.1
1987	21	27.1
1988	33	27.1
1989	23	27.1
1990	28	29.6
1992	32	29.6
1993	23	29.6
1994	23	29.6
1995	27	29.6
1996	38	29.6
1997	33	29.6
1998	28	29.6
1999	34	29.6
2000	31	25.5
2001	18	25.5
2002	20	25.5
2003	29	25.5
2004	26	25.5
2005	30	25.5
2006	15	25.5
2007	32	25.5
2008	22	25.5
2009	32	25.5
2010	15	26.1
2011	32	26.1
2012	25	26.1
2013	25	26.1
2016	32	26.1
2017	30	26.1
2018	24	26.1

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

First to last qualifying date each year at Roelands
Year	First date	Last date
1942	1942-03-14	1942-10-22
1943	1943-01-31	1943-12-08
1944	1944-04-29	1944-12-07
1945	1945-03-26	1945-12-25
1946	1946-04-19	1946-12-22
1947	1947-04-16	1947-10-25
1948	1948-04-08	1948-12-24
1949	1949-03-14	1949-10-21
1950	1950-05-05	1950-11-08
1951	1951-04-13	1951-12-05
1952	1952-03-28	1952-11-05
1953	1953-02-02	1953-11-16
1954	1954-04-12	1954-11-12
1955	1955-02-15	1955-12-10
1956	1956-03-05	1956-11-29
1957	1957-03-19	1957-10-19
1958	1958-04-17	1958-10-14
1959	1959-04-12	1959-12-31
1960	1960-01-01	1960-10-15
1961	1961-01-26	1961-12-15
1962	1962-05-12	1962-11-30
1963	1963-04-22	1963-10-17
1964	1964-04-11	1964-12-19
1965	1965-03-26	1965-12-20
1966	1966-04-10	1966-12-27
1967	1967-04-03	1967-12-24
1968	1968-01-07	1968-10-20
1969	1969-03-13	1969-11-03
1970	1970-02-05	1970-10-06
1971	1971-02-06	1971-11-23
1972	1972-04-20	1972-10-28
1973	1973-04-16	1973-11-01
1974	1974-04-04	1974-10-30
1975	1975-04-04	1975-11-17
1976	1976-01-07	1976-11-12
1977	1977-05-01	1977-11-25
1978	1978-04-19	1978-12-22
1979	1979-04-19	1979-11-13
1980	1980-02-11	1980-12-31
1981	1981-03-06	1981-11-26
1982	1982-01-21	1982-10-05
1983	1983-02-06	1983-10-13
1984	1984-04-11	1984-12-28
1985	1985-03-08	1985-11-08
1986	1986-02-21	1986-11-09
1987	1987-04-01	1987-12-24
1988	1988-03-24	1988-10-05
1989	1989-02-26	1989-10-17
1990	1990-03-26	1990-11-19
1992	1992-03-18	1992-11-19
1993	1993-03-19	1993-11-09
1994	1994-05-12	1994-10-14
1995	1995-05-11	1995-12-24
1996	1996-05-08	1996-12-12
1997	1997-02-20	1997-11-28
1998	1998-03-10	1998-09-22
1999	1999-03-20	1999-10-14
2000	2000-01-15	2000-11-27
2001	2001-05-06	2001-12-04
2002	2002-01-17	2002-11-01
2003	2003-02-17	2003-11-18
2004	2004-01-05	2004-11-26
2005	2005-03-31	2005-11-27
2006	2006-01-25	2006-11-29
2007	2007-01-03	2007-12-17
2008	2008-02-04	2008-11-04
2009	2009-02-25	2009-11-18
2010	2010-04-14	2010-11-10
2011	2011-01-06	2011-12-13
2012	2012-01-20	2012-12-13
2013	2013-03-15	2013-11-30
2016	2016-01-20	2016-10-07
2017	2017-02-10	2017-12-18
2018	2018-01-16	2018-10-14

Every Fixed Threshold

Fixed thresholds at Roelands
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	74	52	1955	24
25 mm (0.98 in): Days with 25 mm or more rain	74	14	1963	5
50 mm (1.97 in): Days with 50 mm or more rain	36	4	1945	1
100 mm (3.94 in): Days with 100 mm or more rain	3	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 1942.

Download the Data

Data for Roelands 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Roelands Threshold Days by Year

Key Facts for Roelands Thresholds

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

Every Fixed Threshold

Download the Data

Related