Moran Threshold Days by Year

20 fixed thresholds counted per year at Moran (USC00145463): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Moran Thresholds

Moran: days with 10 mm (0.39 in) or more of precipitation in 92 years, most in 1973 with 52.
Moran: days with 25 mm (0.98 in) or more of precipitation in 92 years, most in 1898 with 21.
Moran: days with 50 mm (1.97 in) or more of precipitation in 84 years, most in 1898 with 7.
Moran: days with 10 cm (3.9 in) or more of snowfall in 38 years, most in 1958 with 5.
20 fixed thresholds have at least one qualifying day at Moran.

Days at or above 30 C (86 F)

22 years with a qualifying day

Days per year at Moran with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 111 in 1911.

Days at or above 30 C (86 F) per year at Moran
Year	Days	Decade average
1896	72	71.8
1897	90	71.8
1898	56	71.8
1899	69	71.8
1900	67	77.7
1901	101	77.7
1902	65	77.7
1903	60	77.7
1904	57	77.7
1905	95	77.7
1906	70	77.7
1907	84	77.7
1908	78	77.7
1909	100	77.7
1910	91	91.7
1911	111	91.7
1912	86	91.7
1913	102	91.7
1914	105	91.7
1915	52	91.7
1916	95	91.7
1937	89	89

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

First to last qualifying date each year at Moran
Year	First date	Last date
1896	1896-05-06	1896-09-16
1897	1897-05-21	1897-10-15
1898	1898-05-25	1898-10-04
1899	1899-05-28	1899-10-21
1900	1900-06-04	1900-09-15
1901	1901-06-02	1901-10-23
1902	1902-04-20	1902-09-26
1903	1903-06-17	1903-10-02
1904	1904-05-22	1904-10-10
1905	1905-04-08	1905-10-07
1906	1906-04-24	1906-10-07
1907	1907-03-19	1907-10-02
1908	1908-04-22	1908-10-17
1909	1909-04-17	1909-10-21
1910	1910-03-22	1910-10-15
1911	1911-04-29	1911-10-14
1912	1912-05-09	1912-10-09
1913	1913-04-17	1913-10-02
1914	1914-03-14	1914-10-08
1915	1915-05-12	1915-09-27
1916	1916-03-21	1916-10-08
1937	1937-05-19	1937-10-30

Every Fixed Threshold

Fixed thresholds at Moran
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	22	111	1911	89
35 C (95 F): Days	20	65	1901	39
40 C (104 F): Days	6	20	1913	1
90 F (32.2 C): Days	22	89	1901	63
100 F (37.8 C): Days	13	41	1913	3
110 F (43.3 C): Days	1	1	1913	1
0 C (32 F): Ice days (max	22	34	1899	24
0 C (32 F): Frost days (min	22	121	1898	94
-10 C (14 F): Days with min	22	36	1905	17
-20 C (-4 F): Days with min	17	12	1905	2
-30 C (-22 F): Days with min	2	1	1899	1
20 C (68 F): Tropical nights (min	22	65	1911	60
25 C (77 F): Days with min	7	4	1913	4
10 mm (0.39 in): Days with 10 mm or more rain	92	52	1973	34
25 mm (0.98 in): Days with 25 mm or more rain	92	21	1898	12
50 mm (1.97 in): Days with 50 mm or more rain	84	7	1898	2
100 mm (3.94 in): Days with 100 mm or more rain	23	3	2021	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1915	1
10 cm (3.9 in): Days with 10 cm or more snowfall	38	5	1958	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1975	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Moran 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).

Moran Threshold Days by Year

Key Facts for Moran Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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