Shiprock Threshold Days by Year (USC00298284)

16 fixed thresholds counted per year at Shiprock (USC00298284): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Shiprock Thresholds

Shiprock: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1986 with 12.
Shiprock: nights with a minimum temperature at or below 0 C (32 F) in 44 years, most in 1976 with 193.
Shiprock: nights with a minimum temperature at or below -10 C (14 F) in 44 years, most in 1976 with 84.
Shiprock: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 1937 with 140.
16 fixed thresholds have at least one qualifying day at Shiprock.

Days at or above 30 C (86 F)

41 years with a qualifying day

Days per year at Shiprock with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 140 in 1937.

Days at or above 30 C (86 F) per year at Shiprock
Year	Days	Decade average
1927	67	84.5
1928	102	84.5
1930	108	115.5
1931	106	115.5
1932	92	115.5
1933	120	115.5
1934	127	115.5
1937	140	115.5
1940	114	101.2
1945	93	101.2
1946	99	101.2
1947	94	101.2
1948	109	101.2
1949	98	101.2
1950	89	103.1
1951	110	103.1
1952	112	103.1
1954	94	103.1
1955	98	103.1
1956	115	103.1
1959	104	103.1
1961	85	88.8
1964	104	88.8
1965	84	88.8
1966	112	88.8
1967	88	88.8
1969	60	88.8
1971	86	90.4
1972	97	90.4
1974	113	90.4
1975	84	90.4
1976	72	90.4
1981	99	101
1983	74	101
1984	110	101
1985	93	101
1986	92	101
1987	100	101
1988	112	101
1989	128	101
1990	100	100

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

First to last qualifying date each year at Shiprock
Year	First date	Last date
1927	1927-04-26	1927-09-21
1928	1928-05-01	1928-10-07
1930	1930-04-07	1930-09-22
1931	1931-05-25	1931-10-16
1932	1932-05-23	1932-09-30
1933	1933-05-19	1933-10-03
1934	1934-04-22	1934-10-08
1937	1937-04-27	1937-09-22
1940	1940-05-04	1940-09-28
1945	1945-05-26	1945-09-16
1946	1946-05-07	1946-09-28
1947	1947-05-02	1947-10-01
1948	1948-04-28	1948-09-25
1949	1949-04-24	1949-09-27
1950	1950-04-21	1950-10-12
1951	1951-05-04	1951-09-27
1952	1952-05-03	1952-09-24
1954	1954-05-09	1954-10-02
1955	1955-05-22	1955-09-17
1956	1956-05-05	1956-10-09
1959	1959-05-13	1959-09-20
1961	1961-05-20	1961-09-08
1964	1964-05-14	1964-09-12
1965	1965-04-21	1965-09-27
1966	1966-05-05	1966-09-26
1967	1967-05-17	1967-09-24
1969	1969-05-29	1969-09-29
1971	1971-05-26	1971-09-16
1972	1972-05-16	1972-10-03
1974	1974-05-02	1974-09-14
1975	1975-06-03	1975-10-11
1976	1976-05-14	1976-09-14
1981	1981-06-02	1981-09-29
1983	1983-05-24	1983-09-21
1984	1984-05-10	1984-09-20
1985	1985-05-26	1985-09-16
1986	1986-05-20	1986-09-20
1987	1987-04-25	1987-09-28
1988	1988-05-12	1988-10-03
1989	1989-04-17	1989-10-01
1990	1990-05-19	1990-09-16

Every Fixed Threshold

Fixed thresholds at Shiprock
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	41	140	1937	100
35 C (95 F): Days	41	54	1951	47
40 C (104 F): Days	12	8	1989	7
90 F (32.2 C): Days	41	117	1937	85
100 F (37.8 C): Days	36	18	1989	11
0 C (32 F): Ice days (max	35	37	1932	7
0 C (32 F): Frost days (min	44	193	1976	128
-10 C (14 F): Days with min	44	84	1976	40
-20 C (-4 F): Days with min	19	18	1933	5
-30 C (-22 F): Days with min	1	1	1961	1
20 C (68 F): Tropical nights (min	33	20	1947	2
25 C (77 F): Days with min	3	4	1945	1
10 mm (0.39 in): Days with 10 mm or more rain	50	12	1986	4
25 mm (0.98 in): Days with 25 mm or more rain	16	5	1969	1
50 mm (1.97 in): Days with 50 mm or more rain	2	3	1969	1
10 cm (3.9 in): Days with 10 cm or more snowfall	11	2	1932	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1927.

Download the Data

Data for Shiprock 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).

Shiprock Threshold Days by Year (USC00298284)

Key Facts for Shiprock Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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