Alderpoint Threshold Days by Year (USC00040088)

15 fixed thresholds counted per year at Alderpoint (USC00040088): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alderpoint Thresholds

Alderpoint: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1951 with 51.
Alderpoint: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1958 with 25.
Alderpoint: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1960 with 9.
Alderpoint: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1943 with 116.
15 fixed thresholds have at least one qualifying day at Alderpoint.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at Alderpoint with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 116 in 1943.

Days at or above 30 C (86 F) per year at Alderpoint
Year	Days	Decade average
1942	91	93.3
1943	116	93.3
1944	73	93.3
1951	109	76.2
1952	93	76.2
1953	64	76.2
1954	46	76.2
1955	64	76.2
1956	70	76.2
1957	65	76.2
1958	93	76.2
1959	82	76.2
1960	92	73.7
1961	79	73.7
1962	62	73.7
1963	51	73.7
1964	69	73.7
1965	77	73.7
1966	72	73.7
1967	90	73.7
1968	66	73.7
1969	79	73.7
1970	108	84
1971	78	84
1972	92	84
1973	92	84
1978	65	84
1979	69	84

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

First to last qualifying date each year at Alderpoint
Year	First date	Last date
1942	1942-05-19	1942-10-26
1943	1943-04-12	1943-10-14
1944	1944-03-31	1944-10-28
1951	1951-04-09	1951-10-08
1952	1952-05-16	1952-10-14
1953	1953-04-24	1953-10-08
1954	1954-04-17	1954-10-16
1955	1955-06-05	1955-10-17
1956	1956-04-20	1956-10-09
1957	1957-04-29	1957-09-24
1958	1958-05-01	1958-10-17
1959	1959-04-24	1959-10-24
1960	1960-06-02	1960-10-17
1961	1961-06-14	1961-10-19
1962	1962-04-12	1962-09-25
1963	1963-05-18	1963-09-28
1964	1964-06-23	1964-10-23
1965	1965-05-11	1965-11-01
1966	1966-04-01	1966-11-05
1967	1967-05-08	1967-10-18
1968	1968-04-11	1968-10-27
1969	1969-05-06	1969-10-22
1970	1970-05-02	1970-10-15
1971	1971-05-12	1971-10-10
1972	1972-03-17	1972-10-08
1973	1973-05-12	1973-10-18
1978	1978-04-10	1978-10-24
1979	1979-05-20	1979-10-10

Every Fixed Threshold

Fixed thresholds at Alderpoint
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	116	1943	69
35 C (95 F): Days	28	61	1958	26
40 C (104 F): Days	27	14	1973	4
45 C (113 F): Days	3	2	1959	1
90 F (32.2 C): Days	28	85	1943	48
100 F (37.8 C): Days	28	39	1958	15
110 F (43.3 C): Days	11	4	1978	4
0 C (32 F): Ice days (max	1	1	1972	1
0 C (32 F): Frost days (min	28	59	1972	24
-10 C (14 F): Days with min	1	5	1972	5
20 C (68 F): Tropical nights (min	1	1	1956	1
10 mm (0.39 in): Days with 10 mm or more rain	31	51	1951	42
25 mm (0.98 in): Days with 25 mm or more rain	31	25	1958	16
50 mm (1.97 in): Days with 50 mm or more rain	30	9	1960	3
100 mm (3.94 in): Days with 100 mm or more rain	7	2	1964	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 Alderpoint 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).

Alderpoint Threshold Days by Year (USC00040088)

Key Facts for Alderpoint Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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