Mc Donald Threshold Days by Year (USC00145127)

17 fixed thresholds counted per year at Mc Donald (USC00145127): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mc Donald Thresholds

Mc Donald: days with a maximum temperature at or above 30 C (86 F) in 56 years, most in 1963 with 115.
Mc Donald: days with a maximum temperature at or above 35 C (95 F) in 56 years, most in 2000 with 61.
Mc Donald: days with a maximum temperature at or above 90 F (32.2 C) in 56 years, most in 1956 with 86.
Mc Donald: days with a maximum temperature at or below 0 C (32 F) in 56 years, most in 1978 with 50.
17 fixed thresholds have at least one qualifying day at Mc Donald.

Days at or above 30 C (86 F)

56 years with a qualifying day

Days per year at Mc Donald with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 115 in 1963.

Days at or above 30 C (86 F) per year at Mc Donald
Year	Days	Decade average
1955	95	92.2
1956	114	92.2
1957	78	92.2
1958	77	92.2
1959	97	92.2
1960	93	82.9
1961	80	82.9
1962	87	82.9
1963	115	82.9
1964	97	82.9
1966	72	82.9
1967	61	82.9
1968	77	82.9
1969	64	82.9
1970	96	83.5
1971	86	83.5
1972	85	83.5
1973	79	83.5
1974	73	83.5
1975	80	83.5
1976	84	83.5
1977	72	83.5
1978	95	83.5
1979	85	83.5
1980	88	76.5
1981	66	76.5
1982	59	76.5
1983	87	76.5
1984	79	76.5
1985	72	76.5
1986	74	76.5
1987	78	76.5
1988	91	76.5
1989	71	76.5
1990	79	71
1991	80	71
1992	45	71
1993	50	71
1994	85	71
1995	76	71
1996	59	71
1997	77	71
1998	87	71
1999	72	71
2000	105	84
2001	98	84
2002	95	84
2003	91	84
2004	75	84
2005	88	84
2006	87	84
2007	84	84
2008	66	84
2009	51	84
2010	91	90.5
2011	90	90.5

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

First to last qualifying date each year at Mc Donald
Year	First date	Last date
1955	1955-04-26	1955-10-19
1956	1956-05-08	1956-10-12
1957	1957-06-05	1957-10-04
1958	1958-05-21	1958-10-19
1959	1959-04-06	1959-10-25
1960	1960-05-13	1960-10-10
1961	1961-04-19	1961-10-06
1962	1962-04-20	1962-10-14
1963	1963-03-28	1963-10-10
1964	1964-04-16	1964-10-16
1966	1966-05-04	1966-10-08
1967	1967-04-29	1967-10-13
1968	1968-03-31	1968-10-30
1969	1969-05-26	1969-10-01
1970	1970-05-07	1970-10-05
1971	1971-06-11	1971-10-10
1972	1972-04-06	1972-10-02
1973	1973-05-18	1973-10-23
1974	1974-04-25	1974-10-03
1975	1975-04-26	1975-10-22
1976	1976-05-18	1976-10-14
1977	1977-04-09	1977-10-16
1978	1978-03-30	1978-10-20
1979	1979-05-05	1979-10-11
1980	1980-04-20	1980-10-09
1981	1981-04-26	1981-09-29
1982	1982-04-11	1982-10-05
1983	1983-05-24	1983-10-27
1984	1984-05-12	1984-09-23
1985	1985-04-15	1985-09-18
1986	1986-03-30	1986-09-24
1987	1987-04-17	1987-10-04
1988	1988-03-27	1988-09-26
1989	1989-03-11	1989-10-15
1990	1990-04-24	1990-10-06
1991	1991-04-07	1991-10-18
1992	1992-04-30	1992-10-14
1993	1993-05-28	1993-10-07
1994	1994-04-18	1994-10-01
1995	1995-06-07	1995-10-17
1996	1996-04-03	1996-10-14
1997	1997-05-17	1997-10-11
1998	1998-05-14	1998-09-30
1999	1999-05-31	1999-10-15
2000	2000-04-14	2000-10-21
2001	2001-04-20	2001-10-29
2002	2002-04-16	2002-10-01
2003	2003-04-14	2003-10-30
2004	2004-04-18	2004-09-19
2005	2005-05-11	2005-10-19
2006	2006-04-14	2006-10-08
2007	2007-05-11	2007-10-21
2008	2008-04-16	2008-09-29
2009	2009-05-19	2009-10-01
2010	2010-03-31	2010-10-16
2011	2011-04-03	2011-10-16

Every Fixed Threshold

Fixed thresholds at Mc Donald
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	56	115	1963	90
35 C (95 F): Days	56	61	2000	32
40 C (104 F): Days	40	13	1964	3
90 F (32.2 C): Days	56	86	1956	65
100 F (37.8 C): Days	54	29	1964	15
0 C (32 F): Ice days (max	56	50	1978	25
0 C (32 F): Frost days (min	54	173	1970	158
-10 C (14 F): Days with min	54	59	1955	41
-20 C (-4 F): Days with min	50	13	1989	11
-30 C (-22 F): Days with min	1	2	1989	2
20 C (68 F): Tropical nights (min	49	20	1955	5
10 mm (0.39 in): Days with 10 mm or more rain	56	25	1973	15
25 mm (0.98 in): Days with 25 mm or more rain	56	9	2009	7
50 mm (1.97 in): Days with 50 mm or more rain	33	4	1981	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1978	1
10 cm (3.9 in): Days with 10 cm or more snowfall	51	8	1980	5
25 cm (9.8 in): Days with 25 cm or more snowfall	15	3	1987	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

Data for Mc Donald 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).

Mc Donald Threshold Days by Year (USC00145127)

Key Facts for Mc Donald Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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