Niobrara Threshold Days by Year (USC00255960)

20 fixed thresholds counted per year at Niobrara (USC00255960): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Niobrara Thresholds

Niobrara: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1939 with 109.
Niobrara: days with a maximum temperature at or above 35 C (95 F) in 60 years, most in 1939 with 45.
Niobrara: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 1939 with 89.
Niobrara: days with a maximum temperature at or below 0 C (32 F) in 60 years, most in 1978 with 89.
20 fixed thresholds have at least one qualifying day at Niobrara.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Niobrara with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 109 in 1939.

Days at or above 30 C (86 F) per year at Niobrara
Year	Days	Decade average
1939	109	109
1940	84	69.5
1941	87	69.5
1942	61	69.5
1943	86	69.5
1944	58	69.5
1947	72	69.5
1948	50	69.5
1949	58	69.5
1950	30	72.2
1952	88	72.2
1953	96	72.2
1954	77	72.2
1957	70	72.2
1959	72	72.2
1960	57	64.9
1961	60	64.9
1962	52	64.9
1963	83	64.9
1964	70	64.9
1965	60	64.9
1966	70	64.9
1967	57	64.9
1968	78	64.9
1969	62	64.9
1970	75	58.9
1971	57	58.9
1972	57	58.9
1973	61	58.9
1974	38	58.9
1975	57	58.9
1976	60	58.9
1977	64	58.9
1978	64	58.9
1979	56	58.9
1980	80	70.4
1981	65	70.4
1982	47	70.4
1983	77	70.4
1984	65	70.4
1985	61	70.4
1986	52	70.4
1987	86	70.4
1988	97	70.4
1989	74	70.4
1990	74	59.4
1991	87	59.4
1992	29	59.4
1993	31	59.4
1994	58	59.4
1995	66	59.4
1996	43	59.4
1997	71	59.4
1998	79	59.4
1999	56	59.4
2000	76	70
2001	73	70
2002	83	70
2003	66	70
2004	52	70

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

First to last qualifying date each year at Niobrara
Year	First date	Last date
1939	1939-03-22	1939-10-06
1940	1940-04-14	1940-10-26
1941	1941-05-13	1941-09-21
1942	1942-04-29	1942-10-07
1943	1943-03-29	1943-10-11
1944	1944-05-14	1944-09-17
1947	1947-05-14	1947-10-21
1948	1948-04-18	1948-09-19
1949	1949-05-03	1949-09-16
1950	1950-04-22	1950-10-30
1952	1952-04-27	1952-09-30
1953	1953-04-21	1953-10-19
1954	1954-04-13	1954-09-26
1957	1957-05-07	1957-09-30
1959	1959-05-01	1959-09-22
1960	1960-04-22	1960-10-12
1961	1961-05-11	1961-10-17
1962	1962-04-25	1962-10-15
1963	1963-04-01	1963-10-22
1964	1964-04-16	1964-09-10
1965	1965-04-29	1965-08-25
1966	1966-05-04	1966-10-08
1967	1967-04-29	1967-10-04
1968	1968-03-30	1968-10-13
1969	1969-05-14	1969-09-15
1970	1970-05-07	1970-09-20
1971	1971-04-15	1971-09-13
1972	1972-04-06	1972-09-20
1973	1973-05-20	1973-09-10
1974	1974-06-18	1974-09-27
1975	1975-05-17	1975-10-05
1976	1976-05-19	1976-10-01
1977	1977-04-09	1977-09-09
1978	1978-05-11	1978-09-12
1979	1979-05-28	1979-09-18
1980	1980-04-20	1980-10-08
1981	1981-04-25	1981-09-20
1982	1982-06-23	1982-09-11
1983	1983-05-27	1983-09-28
1984	1984-05-31	1984-09-20
1985	1985-04-11	1985-09-19
1986	1986-05-04	1986-09-12
1987	1987-04-17	1987-10-04
1988	1988-04-07	1988-09-25
1989	1989-04-20	1989-10-24
1990	1990-04-22	1990-10-06
1991	1991-04-05	1991-10-22
1992	1992-04-30	1992-10-02
1993	1993-06-16	1993-10-07
1994	1994-04-17	1994-09-20
1995	1995-06-06	1995-10-11
1996	1996-04-24	1996-10-12
1997	1997-05-10	1997-10-02
1998	1998-05-14	1998-09-29
1999	1999-05-28	1999-10-27
2000	2000-05-04	2000-10-19
2001	2001-04-26	2001-10-03
2002	2002-04-15	2002-09-30
2003	2003-04-13	2003-10-22
2004	2004-04-18	2004-09-20

Every Fixed Threshold

Fixed thresholds at Niobrara
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	109	1939	52
35 C (95 F): Days	60	45	1939	9
40 C (104 F): Days	26	10	1940	1
45 C (113 F): Days	2	4	1940	4
90 F (32.2 C): Days	60	89	1939	27
100 F (37.8 C): Days	49	24	1940	4
110 F (43.3 C): Days	2	5	1940	5
0 C (32 F): Ice days (max	60	89	1978	33
0 C (32 F): Frost days (min	60	172	1979	140
-10 C (14 F): Days with min	60	88	1950	43
-20 C (-4 F): Days with min	59	36	1978	12
-30 C (-22 F): Days with min	29	4	1989	2
20 C (68 F): Tropical nights (min	60	47	2002	12
25 C (77 F): Days with min	29	5	1988	4
10 mm (0.39 in): Days with 10 mm or more rain	58	27	1971	18
25 mm (0.98 in): Days with 25 mm or more rain	55	10	1982	4
50 mm (1.97 in): Days with 50 mm or more rain	31	4	1944	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1967	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	8	1982	3
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1983	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

Data for Niobrara 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).

Niobrara Threshold Days by Year (USC00255960)

Key Facts for Niobrara Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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