Donald Threshold Days by Year

12 fixed thresholds counted per year at Donald (ASN00078072): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Donald Thresholds

Donald: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1973 with 22.
Donald: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1971 with 5.
Donald: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 1982 with 70.
Donald: days with a maximum temperature at or above 35 C (95 F) in 33 years, most in 1982 with 27.
12 fixed thresholds have at least one qualifying day at Donald.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Donald with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 1982.

Days at or above 30 C (86 F) per year at Donald
Year	Days	Decade average
1967	51	55.3
1968	60	55.3
1969	55	55.3
1970	48	49.9
1971	57	49.9
1972	52	49.9
1973	42	49.9
1974	46	49.9
1975	49	49.9
1976	47	49.9
1977	55	49.9
1978	52	49.9
1979	51	49.9
1980	52	54.2
1981	55	54.2
1982	70	54.2
1983	59	54.2
1984	35	54.2
1985	48	54.2
1986	42	54.2
1987	53	54.2
1988	62	54.2
1989	66	54.2
1990	64	50.4
1991	49	50.4
1992	37	50.4
1993	36	50.4
1994	54	50.4
1995	48	50.4
1996	45	50.4
1997	65	50.4
1998	52	50.4
1999	54	50.4

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

First to last qualifying date each year at Donald
Year	First date	Last date
1967	1967-01-05	1967-12-27
1968	1968-01-05	1968-12-30
1969	1969-01-01	1969-12-28
1970	1970-01-07	1970-12-27
1971	1971-01-05	1971-12-25
1972	1972-01-05	1972-12-29
1973	1973-01-01	1973-12-29
1974	1974-01-03	1974-12-23
1975	1975-01-01	1975-12-31
1976	1976-01-01	1976-12-31
1977	1977-01-05	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-30
1980	1980-01-02	1980-12-31
1981	1981-01-01	1981-12-31
1982	1982-01-05	1982-12-31
1983	1983-01-01	1983-12-29
1984	1984-01-05	1984-12-31
1985	1985-01-12	1985-12-30
1986	1986-01-06	1986-12-30
1987	1987-01-02	1987-12-31
1988	1988-01-05	1988-12-24
1989	1989-01-01	1989-12-31
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-29
1992	1992-01-19	1992-12-31
1993	1993-01-01	1993-12-20
1994	1994-01-02	1994-12-31
1995	1995-01-03	1995-12-30
1996	1996-01-05	1996-12-24
1997	1997-01-02	1997-12-31
1998	1998-01-01	1998-12-31
1999	1999-01-01	1999-12-24

Every Fixed Threshold

Fixed thresholds at Donald
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	70	1982	54
35 C (95 F): Days	33	27	1982	15
40 C (104 F): Days	21	6	1982	3
90 F (32.2 C): Days	33	50	1982	32
100 F (37.8 C): Days	31	13	1981	7
110 F (43.3 C): Days	2	1	1968	1
0 C (32 F): Frost days (min	32	27	1982	5
20 C (68 F): Tropical nights (min	33	22	1982	17
25 C (77 F): Days with min	20	3	1968	1
10 mm (0.39 in): Days with 10 mm or more rain	57	22	1973	10
25 mm (0.98 in): Days with 25 mm or more rain	47	5	1971	1
50 mm (1.97 in): Days with 50 mm or more rain	9	3	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 1967.

Download the Data

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

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Donald Threshold Days by Year

Key Facts for Donald Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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