Green River Aviation Threshold Days by Year (USC00423418)

19 fixed thresholds counted per year at Green River Aviation (USC00423418): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Green River Aviation Thresholds

Green River Aviation: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1969 with 9.
Green River Aviation: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 1994 with 128.
Green River Aviation: days with a maximum temperature at or above 35 C (95 F) in 33 years, most in 1994 with 76.
Green River Aviation: days with a maximum temperature at or above 90 F (32.2 C) in 33 years, most in 1994 with 109.
19 fixed thresholds have at least one qualifying day at Green River Aviation.

Days at or above 30 C (86 F)

33 years with a qualifying day

Days per year at Green River Aviation with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 1994.

Days at or above 30 C (86 F) per year at Green River Aviation
Year	Days	Decade average
1949	112	112
1950	91	105.9
1951	98	105.9
1952	114	105.9
1953	105	105.9
1954	113	105.9
1955	94	105.9
1956	120	105.9
1957	91	105.9
1958	124	105.9
1959	109	105.9
1960	122	102.5
1961	101	102.5
1962	106	102.5
1963	116	102.5
1964	97	102.5
1965	78	102.5
1966	113	102.5
1967	96	102.5
1968	90	102.5
1969	106	102.5
1970	94	99.3
1971	93	99.3
1972	111	99.3
1983	97	110.5
1987	115	110.5
1988	113	110.5
1989	117	110.5
1990	105	116
1991	112	116
1992	118	116
1993	117	116
1994	128	116

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

First to last qualifying date each year at Green River Aviation
Year	First date	Last date
1949	1949-04-23	1949-10-04
1950	1950-04-21	1950-10-13
1951	1951-05-25	1951-09-27
1952	1952-05-03	1952-10-03
1953	1953-06-01	1953-10-02
1954	1954-05-06	1954-09-22
1955	1955-05-21	1955-09-17
1956	1956-05-03	1956-10-07
1957	1957-05-28	1957-10-01
1958	1958-05-04	1958-10-14
1959	1959-04-04	1959-09-14
1960	1960-04-10	1960-09-30
1961	1961-05-10	1961-09-15
1962	1962-04-15	1962-09-19
1963	1963-05-06	1963-10-04
1964	1964-05-14	1964-10-03
1965	1965-05-01	1965-09-14
1966	1966-05-04	1966-09-29
1967	1967-05-17	1967-09-30
1968	1968-05-20	1968-09-13
1969	1969-05-11	1969-09-30
1970	1970-05-17	1970-10-01
1971	1971-05-02	1971-09-14
1972	1972-05-04	1972-10-03
1983	1983-05-24	1983-09-19
1987	1987-04-24	1987-10-05
1988	1988-05-12	1988-10-03
1989	1989-04-07	1989-09-30
1990	1990-04-15	1990-09-15
1991	1991-05-08	1991-10-13
1992	1992-04-26	1992-10-02
1993	1993-05-11	1993-10-05
1994	1994-04-17	1994-09-29

Every Fixed Threshold

Fixed thresholds at Green River Aviation
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	33	128	1994	128
35 C (95 F): Days	33	76	1994	76
40 C (104 F): Days	16	18	1994	18
45 C (113 F): Days	1	1	1994	1
90 F (32.2 C): Days	33	109	1994	109
100 F (37.8 C): Days	32	45	1994	45
110 F (43.3 C): Days	2	1	1989	1
0 C (32 F): Ice days (max	31	38	1988	4
0 C (32 F): Frost days (min	33	181	1955	141
-10 C (14 F): Days with min	33	76	1955	12
-20 C (-4 F): Days with min	23	35	1955	6
-30 C (-22 F): Days with min	2	1	1955	1
20 C (68 F): Tropical nights (min	31	12	1994	6
25 C (77 F): Days with min	2	1	1987	1
10 mm (0.39 in): Days with 10 mm or more rain	47	9	1969	4
25 mm (0.98 in): Days with 25 mm or more rain	14	3	1961	1
50 mm (1.97 in): Days with 50 mm or more rain	2	0	n/a	1
10 cm (3.9 in): Days with 10 cm or more snowfall	16	2	1988	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Green River Aviation 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).

Green River Aviation Threshold Days by Year (USC00423418)

Key Facts for Green River Aviation Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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