Indiana Threshold Days by Year (USC00364219)

16 fixed thresholds counted per year at Indiana (USC00364219): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Indiana Thresholds

Indiana: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1911 with 71.
Indiana: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 1911 with 37.
Indiana: days with a maximum temperature at or below 0 C (32 F) in 30 years, most in 1904 with 52.
Indiana: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1917 with 162.
16 fixed thresholds have at least one qualifying day at Indiana.

Days at or above 30 C (86 F)

30 years with a qualifying day

Days per year at Indiana with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 1911.

Days at or above 30 C (86 F) per year at Indiana
Year	Days	Decade average
1903	22	28
1904	16	28
1905	17	28
1906	36	28
1907	20	28
1908	54	28
1909	31	28
1910	54	51.4
1911	71	51.4
1912	35	51.4
1913	58	51.4
1914	57	51.4
1915	38	51.4
1916	49	51.4
1917	31	51.4
1918	51	51.4
1919	70	51.4
1920	38	43.8
1921	58	43.8
1922	45	43.8
1924	26	43.8
1925	52	43.8
1942	27	32.8
1943	36	32.8
1944	38	32.8
1946	27	32.8
1949	36	32.8
1950	15	31
1951	28	31
1952	50	31

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

First to last qualifying date each year at Indiana
Year	First date	Last date
1903	1903-05-19	1903-09-16
1904	1904-05-25	1904-09-29
1905	1905-06-16	1905-08-24
1906	1906-05-23	1906-09-19
1907	1907-06-19	1907-09-15
1908	1908-04-24	1908-09-26
1909	1909-06-13	1909-09-24
1910	1910-06-19	1910-10-03
1911	1911-05-11	1911-09-24
1912	1912-05-22	1912-09-15
1913	1913-04-24	1913-10-05
1914	1914-04-28	1914-10-10
1915	1915-04-24	1915-09-18
1916	1916-05-15	1916-09-12
1917	1917-06-13	1917-08-27
1918	1918-05-18	1918-08-25
1919	1919-05-27	1919-10-11
1920	1920-05-26	1920-10-23
1921	1921-04-05	1921-09-10
1922	1922-05-11	1922-10-05
1924	1924-06-19	1924-10-09
1925	1925-04-23	1925-09-21
1942	1942-05-01	1942-09-16
1943	1943-06-03	1943-09-07
1944	1944-05-03	1944-08-16
1946	1946-06-20	1946-09-27
1949	1949-05-04	1949-10-10
1950	1950-05-05	1950-08-27
1951	1951-06-02	1951-10-05
1952	1952-06-06	1952-09-14

Every Fixed Threshold

Fixed thresholds at Indiana
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	30	71	1911	50
35 C (95 F): Days	13	18	1911	8
40 C (104 F): Days	1	2	1918	2
90 F (32.2 C): Days	30	37	1911	31
100 F (37.8 C): Days	2	2	1911	2
0 C (32 F): Ice days (max	30	52	1904	14
0 C (32 F): Frost days (min	29	162	1917	120
-10 C (14 F): Days with min	29	43	1912	12
-20 C (-4 F): Days with min	18	10	1918	2
20 C (68 F): Tropical nights (min	27	20	1949	15
25 C (77 F): Days with min	1	1	1952	1
10 mm (0.39 in): Days with 10 mm or more rain	28	52	1919	32
25 mm (0.98 in): Days with 25 mm or more rain	28	12	1905	9
50 mm (1.97 in): Days with 50 mm or more rain	16	2	1912	1
10 cm (3.9 in): Days with 10 cm or more snowfall	6	6	1942	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1942	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Indiana 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).

Indiana Threshold Days by Year (USC00364219)

Key Facts for Indiana Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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