Gary Threshold Days by Year

17 fixed thresholds counted per year at Gary (USC00123213): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gary Thresholds

Gary: nights with a minimum temperature at or below 0 C (32 F) in 38 years, most in 1969 with 141.
Gary: nights with a minimum temperature at or below -10 C (14 F) in 38 years, most in 1963 with 54.
Gary: nights with a minimum temperature at or above 20 C (68 F) in 38 years, most in 1949 with 44.
Gary: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1965 with 40.
17 fixed thresholds have at least one qualifying day at Gary.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Gary with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 60 in 1978.

Days at or above 30 C (86 F) per year at Gary
Year	Days	Decade average
1942	39	45.8
1944	58	45.8
1948	42	45.8
1949	44	45.8
1950	25	39.7
1951	20	39.7
1952	48	39.7
1953	56	39.7
1955	54	39.7
1956	43	39.7
1957	31	39.7
1958	26	39.7
1959	54	39.7
1960	30	35.6
1961	38	35.6
1962	41	35.6
1963	40	35.6
1964	51	35.6
1965	33	35.6
1966	41	35.6
1967	25	35.6
1968	36	35.6
1969	21	35.6
1972	41	48.8
1974	33	48.8
1975	52	48.8
1976	49	48.8
1977	58	48.8
1978	60	48.8

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

First to last qualifying date each year at Gary
Year	First date	Last date
1942	1942-04-29	1942-09-18
1944	1944-05-12	1944-10-06
1948	1948-06-03	1948-09-19
1949	1949-05-04	1949-10-10
1950	1950-05-25	1950-10-31
1951	1951-05-02	1951-10-05
1952	1952-05-02	1952-10-01
1953	1953-05-26	1953-10-03
1955	1955-05-03	1955-09-20
1956	1956-05-13	1956-09-30
1957	1957-06-17	1957-09-02
1958	1958-05-15	1958-09-10
1959	1959-05-03	1959-09-23
1960	1960-04-25	1960-09-09
1961	1961-06-06	1961-09-23
1962	1962-04-27	1962-10-12
1963	1963-05-09	1963-10-17
1964	1964-05-19	1964-09-22
1965	1965-05-02	1965-09-21
1966	1966-05-24	1966-09-03
1967	1967-05-25	1967-10-04
1968	1968-06-05	1968-09-03
1969	1969-05-27	1969-07-26
1972	1972-05-23	1972-09-17
1974	1974-06-03	1974-09-20
1975	1975-05-17	1975-10-13
1976	1976-04-16	1976-10-03
1977	1977-04-18	1977-09-05
1978	1978-05-26	1978-09-20

Every Fixed Threshold

Fixed thresholds at Gary
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	60	1978	60
35 C (95 F): Days	24	18	1953	5
90 F (32.2 C): Days	29	39	1977	33
100 F (37.8 C): Days	11	2	1944	1
0 C (32 F): Ice days (max	29	68	1963	61
0 C (32 F): Frost days (min	38	141	1969	123
-10 C (14 F): Days with min	38	54	1963	42
-20 C (-4 F): Days with min	28	21	1963	5
-30 C (-22 F): Days with min	1	1	1966	1
20 C (68 F): Tropical nights (min	38	44	1949	32
25 C (77 F): Days with min	19	5	1952	3
10 mm (0.39 in): Days with 10 mm or more rain	38	40	1965	24
25 mm (0.98 in): Days with 25 mm or more rain	38	15	1975	7
50 mm (1.97 in): Days with 50 mm or more rain	27	6	1975	3
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	19	7	1978	7
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1956	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 Gary 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).

Gary Threshold Days by Year

Key Facts for Gary Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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