Zilair Threshold Days by Year (RSM00035026)

15 fixed thresholds counted per year at Zilair (RSM00035026): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zilair Thresholds

Zilair: days with 10 mm (0.39 in) or more of precipitation in 88 years, most in 1990 with 33.
Zilair: days with a maximum temperature at or below 0 C (32 F) in 84 years, most in 1945 with 156.
Zilair: nights with a minimum temperature at or below 0 C (32 F) in 83 years, most in 1960 with 228.
Zilair: nights with a minimum temperature at or below -10 C (14 F) in 83 years, most in 1952 with 149.
15 fixed thresholds have at least one qualifying day at Zilair.

Days at or above 30 C (86 F)

75 years with a qualifying day

Days per year at Zilair with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 2010.

Days at or above 30 C (86 F) per year at Zilair
Year	Days	Decade average
1936	21	12.5
1937	10	12.5
1938	5	12.5
1939	14	12.5
1940	27	11.4
1942	7	11.4
1943	8	11.4
1944	4	11.4
1947	5	11.4
1948	17	11.4
1949	12	11.4
1950	1	11.7
1951	19	11.7
1952	26	11.7
1953	9	11.7
1954	15	11.7
1955	13	11.7
1956	7	11.7
1957	10	11.7
1958	5	11.7
1960	6	5.6
1961	3	5.6
1962	7	5.6
1963	2	5.6
1965	9	5.6
1966	8	5.6
1967	9	5.6
1968	4	5.6
1969	2	5.6
1971	9	8.8
1972	11	8.8
1973	1	8.8
1974	4	8.8
1975	22	8.8
1976	7	8.8
1978	9	8.8
1979	7	8.8
1980	3	6.8
1981	6	6.8
1982	4	6.8
1983	6	6.8
1984	13	6.8
1985	3	6.8
1987	13	6.8
1988	6	6.8
1989	7	6.8
1990	6	8.7
1991	7	8.7
1992	1	8.7
1993	4	8.7
1994	1	8.7
1995	18	8.7
1996	7	8.7
1998	29	8.7
1999	5	8.7
2000	7	11
2001	10	11
2002	3	11
2003	8	11
2004	10	11
2005	9	11
2006	17	11
2007	16	11
2008	23	11
2009	7	11
2010	42	19
2011	21	19
2012	41	19
2013	6	19
2014	15	19
2015	19	19
2016	23	19
2017	7	19
2018	8	19
2019	8	19

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

First to last qualifying date each year at Zilair
Year	First date	Last date
1936	1936-06-03	1936-08-16
1937	1937-06-13	1937-08-13
1938	1938-06-14	1938-08-21
1939	1939-06-01	1939-08-05
1940	1940-07-01	1940-08-29
1942	1942-07-17	1942-08-10
1943	1943-05-29	1943-08-18
1944	1944-05-24	1944-08-16
1947	1947-07-13	1947-07-17
1948	1948-06-23	1948-08-17
1949	1949-06-11	1949-08-02
1950	1950-07-15	1950-07-15
1951	1951-06-17	1951-09-03
1952	1952-05-22	1952-08-20
1953	1953-07-08	1953-09-15
1954	1954-06-30	1954-08-22
1955	1955-06-03	1955-08-06
1956	1956-06-27	1956-09-02
1957	1957-05-26	1957-07-26
1958	1958-06-16	1958-08-17
1960	1960-06-18	1960-06-25
1961	1961-05-17	1961-06-21
1962	1962-07-15	1962-07-25
1963	1963-06-18	1963-06-19
1965	1965-06-14	1965-08-13
1966	1966-07-03	1966-08-17
1967	1967-06-19	1967-08-09
1968	1968-06-26	1968-08-04
1969	1969-06-29	1969-07-06
1971	1971-06-15	1971-08-18
1972	1972-06-20	1972-08-27
1973	1973-06-13	1973-06-13
1974	1974-07-05	1974-08-17
1975	1975-06-01	1975-08-27
1976	1976-08-08	1976-08-25
1978	1978-06-16	1978-08-12
1979	1979-07-26	1979-09-02
1980	1980-05-23	1980-07-12
1981	1981-07-22	1981-08-31
1982	1982-06-20	1982-07-11
1983	1983-07-12	1983-08-15
1984	1984-07-02	1984-07-21
1985	1985-06-21	1985-06-24
1987	1987-06-22	1987-08-04
1988	1988-06-15	1988-08-08
1989	1989-07-01	1989-07-25
1990	1990-06-02	1990-06-18
1991	1991-06-27	1991-07-25
1992	1992-05-19	1992-05-19
1993	1993-06-28	1993-08-15
1994	1994-06-13	1994-06-13
1995	1995-06-18	1995-08-30
1996	1996-06-18	1996-07-20
1998	1998-06-05	1998-08-24
1999	1999-07-30	1999-08-25
2000	2000-07-26	2000-08-04
2001	2001-06-23	2001-08-15
2002	2002-07-28	2002-08-04
2003	2003-08-08	2003-09-07
2004	2004-05-15	2004-08-25
2005	2005-06-13	2005-08-16
2006	2006-06-06	2006-09-07
2007	2007-06-19	2007-08-30
2008	2008-06-19	2008-08-21
2009	2009-06-14	2009-07-23
2010	2010-06-04	2010-09-06
2011	2011-07-03	2011-09-05
2012	2012-06-02	2012-08-19
2013	2013-06-18	2013-06-23
2014	2014-05-15	2014-08-29
2015	2015-06-01	2015-08-02
2016	2016-07-06	2016-08-26
2017	2017-07-22	2017-09-03
2018	2018-07-02	2018-08-13
2019	2019-06-24	2019-08-20

Every Fixed Threshold

Fixed thresholds at Zilair
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	75	42	2010	8
35 C (95 F): Days	14	6	2012	1
90 F (32.2 C): Days	55	19	2012	2
100 F (37.8 C): Days	2	1	1952	1
0 C (32 F): Ice days (max	84	156	1945	52
0 C (32 F): Frost days (min	83	228	1960	71
-10 C (14 F): Days with min	83	149	1952	33
-20 C (-4 F): Days with min	83	74	1969	8
-30 C (-22 F): Days with min	80	27	1969	1
-40 C (-40 F): Days with min	19	5	1950	2
20 C (68 F): Tropical nights (min	25	5	1998	1
10 mm (0.39 in): Days with 10 mm or more rain	88	33	1990	8
25 mm (0.98 in): Days with 25 mm or more rain	59	5	1962	1
50 mm (1.97 in): Days with 50 mm or more rain	8	1	1938	1
100 mm (3.94 in): Days with 100 mm or more rain	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.

Download the Data

Data for Zilair 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).

Zilair Threshold Days by Year (RSM00035026)

Key Facts for Zilair Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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