Avalon Threshold Days by Year (USC00230371)

19 fixed thresholds counted per year at Avalon (USC00230371): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Avalon Thresholds

Avalon: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1909 with 44.
Avalon: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1909 with 18.
Avalon: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 1901 with 108.
Avalon: days with a maximum temperature at or above 90 F (32.2 C) in 27 years, most in 1901 with 88.
19 fixed thresholds have at least one qualifying day at Avalon.

Days at or above 30 C (86 F)

27 years with a qualifying day

Days per year at Avalon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 108 in 1901.

Days at or above 30 C (86 F) per year at Avalon
Year	Days	Decade average
1899	69	69
1900	80	74.7
1901	108	74.7
1902	54	74.7
1903	90	74.7
1904	47	74.7
1905	71	74.7
1906	87	74.7
1907	62	74.7
1908	75	74.7
1909	73	74.7
1910	69	78.8
1911	99	78.8
1912	84	78.8
1913	93	78.8
1914	91	78.8
1915	37	78.8
1916	73	78.8
1917	69	78.8
1918	90	78.8
1919	83	78.8
1920	61	64.7
1921	76	64.7
1922	71	64.7
1923	56	64.7
1924	41	64.7
1925	83	64.7

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

First to last qualifying date each year at Avalon
Year	First date	Last date
1899	1899-05-16	1899-10-23
1900	1900-05-12	1900-10-04
1901	1901-04-26	1901-10-22
1902	1902-04-20	1902-08-28
1903	1903-05-17	1903-10-02
1904	1904-05-24	1904-10-08
1905	1905-04-09	1905-10-06
1906	1906-04-24	1906-10-07
1907	1907-03-21	1907-09-19
1908	1908-04-19	1908-09-25
1909	1909-05-05	1909-10-07
1910	1910-03-22	1910-10-16
1911	1911-05-08	1911-09-28
1912	1912-05-02	1912-10-09
1913	1913-05-13	1913-10-03
1914	1914-04-22	1914-09-19
1915	1915-04-28	1915-10-03
1916	1916-05-24	1916-10-08
1917	1917-05-18	1917-09-18
1918	1918-03-13	1918-10-05
1919	1919-06-08	1919-10-04
1920	1920-05-26	1920-10-10
1921	1921-05-20	1921-09-22
1922	1922-06-06	1922-10-27
1923	1923-05-31	1923-09-08
1924	1924-04-15	1924-09-20
1925	1925-05-20	1925-09-29

Every Fixed Threshold

Fixed thresholds at Avalon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	27	108	1901	83
35 C (95 F): Days	26	63	1901	24
40 C (104 F): Days	6	16	1901	10
90 F (32.2 C): Days	27	88	1901	55
100 F (37.8 C): Days	18	37	1901	5
110 F (43.3 C): Days	2	3	1901	1
0 C (32 F): Ice days (max	27	44	1902	19
0 C (32 F): Frost days (min	27	138	1904	123
-10 C (14 F): Days with min	27	51	1899	26
-20 C (-4 F): Days with min	22	17	1905	1
-30 C (-22 F): Days with min	4	4	1899	1
20 C (68 F): Tropical nights (min	27	66	1921	32
25 C (77 F): Days with min	13	10	1917	3
10 mm (0.39 in): Days with 10 mm or more rain	29	44	1909	37
25 mm (0.98 in): Days with 25 mm or more rain	29	18	1909	16
50 mm (1.97 in): Days with 50 mm or more rain	23	8	1915	2
100 mm (3.94 in): Days with 100 mm or more rain	5	2	1915	1
10 cm (3.9 in): Days with 10 cm or more snowfall	7	6	1914	4
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1923	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Avalon 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).

Avalon Threshold Days by Year (USC00230371)

Key Facts for Avalon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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