Casey Threshold Days by Year (USC00111329)

16 fixed thresholds counted per year at Casey (USC00111329): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Casey Thresholds

Casey: days with 10 mm (0.39 in) or more of precipitation in 95 years, most in 2018 with 51.
Casey: days with 25 mm (0.98 in) or more of precipitation in 95 years, most in 2000 with 19.
Casey: days with 50 mm (1.97 in) or more of precipitation in 79 years, most in 2000 with 8.
Casey: days with 10 cm (3.9 in) or more of snowfall in 41 years, most in 1912 with 3.
16 fixed thresholds have at least one qualifying day at Casey.

Days at or above 30 C (86 F)

31 years with a qualifying day

Days per year at Casey with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 1906.

Days at or above 30 C (86 F) per year at Casey
Year	Days	Decade average
1893	60	67.4
1894	69	67.4
1895	76	67.4
1896	57	67.4
1897	71	67.4
1898	70	67.4
1899	69	67.4
1900	63	86
1906	100	86
1908	95	86
1910	76	76
1981	41	56.5
1982	40	56.5
1983	80	56.5
1984	53	56.5
1985	43	56.5
1987	79	56.5
1988	74	56.5
1989	42	56.5
2015	61	75
2016	80	75
2017	72	75
2018	85	75
2019	77	75
2020	69	74.7
2021	72	74.7
2022	68	74.7
2023	73	74.7
2024	72	74.7
2025	84	74.7
2026	85	74.7

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

First to last qualifying date each year at Casey
Year	First date	Last date
1893	1893-05-20	1893-09-21
1894	1894-04-29	1894-09-21
1895	1895-04-30	1895-09-23
1896	1896-05-05	1896-09-14
1897	1897-06-10	1897-10-16
1898	1898-06-02	1898-10-02
1899	1899-04-29	1899-10-14
1900	1900-05-13	1900-09-25
1906	1906-04-27	1906-09-25
1908	1908-05-15	1908-10-21
1910	1910-03-23	1910-10-19
1981	1981-06-05	1981-09-30
1982	1982-05-13	1982-09-14
1983	1983-06-11	1983-10-03
1984	1984-06-06	1984-09-13
1985	1985-05-31	1985-09-23
1987	1987-04-22	1987-09-29
1988	1988-05-15	1988-09-23
1989	1989-04-27	1989-10-14
2015	2015-05-06	2015-10-23
2016	2016-05-30	2016-10-18
2017	2017-05-10	2017-10-15
2018	2018-05-03	2018-10-10
2019	2019-05-17	2019-10-03
2020	2020-05-25	2020-10-09
2021	2021-05-23	2021-10-11
2022	2022-05-11	2022-09-22
2023	2023-05-20	2023-10-05
2024	2024-04-16	2024-10-06
2025	2025-05-16	2025-10-06
2026	2026-03-23	2026-10-14

Every Fixed Threshold

Fixed thresholds at Casey
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	31	100	1906	85
35 C (95 F): Days	30	30	1908	17
90 F (32.2 C): Days	31	65	1908	46
100 F (37.8 C): Days	9	8	1983	4
0 C (32 F): Ice days (max	31	48	1985	20
0 C (32 F): Frost days (min	30	131	2018	72
-10 C (14 F): Days with min	30	36	2022	23
-20 C (-4 F): Days with min	20	9	1893	6
20 C (68 F): Tropical nights (min	30	59	2018	25
25 C (77 F): Days with min	7	3	1900	1
10 mm (0.39 in): Days with 10 mm or more rain	95	51	2018	32
25 mm (0.98 in): Days with 25 mm or more rain	95	19	2000	11
50 mm (1.97 in): Days with 50 mm or more rain	79	8	2000	2
100 mm (3.94 in): Days with 100 mm or more rain	10	1	1908	1
10 cm (3.9 in): Days with 10 cm or more snowfall	41	3	1912	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1910	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Casey 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Casey Threshold Days by Year (USC00111329)

Key Facts for Casey Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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