Kitt Peak Threshold Days by Year (USC00024675)

14 fixed thresholds counted per year at Kitt Peak (USC00024675): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kitt Peak Thresholds

Kitt Peak: days with 10 mm (0.39 in) or more of precipitation in 53 years, most in 1983 with 36.
Kitt Peak: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1983 with 19.
Kitt Peak: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 1994 with 37.
Kitt Peak: days with a maximum temperature at or below 0 C (32 F) in 46 years, most in 1966 with 16.
14 fixed thresholds have at least one qualifying day at Kitt Peak.

Days at or above 30 C (86 F)

51 years with a qualifying day

Days per year at Kitt Peak with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 37 in 1994.

Days at or above 30 C (86 F) per year at Kitt Peak
Year	Days	Decade average
1961	18	6.9
1962	21	6.9
1963	3	6.9
1964	5	6.9
1965	3	6.9
1966	2	6.9
1967	2	6.9
1968	6	6.9
1969	2	6.9
1970	19	19.4
1971	10	19.4
1972	10	19.4
1973	15	19.4
1974	22	19.4
1975	15	19.4
1976	24	19.4
1977	23	19.4
1978	23	19.4
1979	33	19.4
1980	31	17.5
1981	25	17.5
1982	14	17.5
1983	11	17.5
1984	4	17.5
1985	31	17.5
1986	5	17.5
1987	12	17.5
1988	16	17.5
1989	26	17.5
1991	6	15.4
1992	6	15.4
1993	13	15.4
1994	37	15.4
1997	28	15.4
1998	12	15.4
1999	6	15.4
2000	23	19.3
2001	15	19.3
2002	27	19.3
2003	20	19.3
2004	5	19.3
2005	26	19.3
2010	15	13.4
2011	19	13.4
2012	13	13.4
2013	8	13.4
2014	9	13.4
2015	12	13.4
2016	18	13.4
2025	26	24
2026	22	24

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

First to last qualifying date each year at Kitt Peak
Year	First date	Last date
1961	1961-06-13	1961-07-27
1962	1962-06-19	1962-09-17
1963	1963-07-01	1963-07-25
1964	1964-05-12	1964-08-07
1965	1965-07-03	1965-07-05
1966	1966-07-07	1966-07-19
1967	1967-07-03	1967-09-13
1968	1968-06-19	1968-07-03
1969	1969-07-01	1969-07-02
1970	1970-05-18	1970-07-25
1971	1971-06-16	1971-07-14
1972	1972-06-29	1972-08-02
1973	1973-06-09	1973-09-07
1974	1974-05-27	1974-07-02
1975	1975-06-09	1975-11-05
1976	1976-05-25	1976-08-17
1977	1977-06-02	1977-09-09
1978	1978-05-14	1978-07-28
1979	1979-06-13	1979-09-12
1980	1980-06-16	1980-10-06
1981	1981-06-07	1981-08-30
1982	1982-06-27	1982-09-21
1983	1983-05-28	1983-09-04
1984	1984-05-29	1984-06-24
1985	1985-06-07	1985-08-25
1986	1986-06-13	1986-08-01
1987	1987-06-14	1987-07-26
1988	1988-06-04	1988-07-17
1989	1989-04-21	1989-09-23
1991	1991-07-02	1991-08-09
1992	1992-06-23	1992-08-17
1993	1993-06-14	1993-08-04
1994	1994-06-10	1994-08-11
1997	1997-06-19	1997-07-29
1998	1998-06-28	1998-08-29
1999	1999-06-18	1999-07-02
2000	2000-05-23	2000-09-15
2001	2001-06-08	2001-09-05
2002	2002-05-31	2002-09-04
2003	2003-05-27	2003-08-11
2004	2004-06-05	2004-07-21
2005	2005-05-22	2005-07-22
2010	2010-06-24	2010-10-17
2011	2011-06-22	2011-09-05
2012	2012-05-16	2012-10-03
2013	2013-06-08	2013-08-17
2014	2014-06-03	2014-07-25
2015	2015-06-16	2015-08-16
2016	2016-06-04	2016-07-30
2025	2025-06-12	2025-08-22
2026	2026-05-12	2026-08-29

Every Fixed Threshold

Fixed thresholds at Kitt Peak
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	51	37	1994	22
35 C (95 F): Days	6	2	1989	1
90 F (32.2 C): Days	37	15	1976	7
0 C (32 F): Ice days (max	46	16	1966	1
0 C (32 F): Frost days (min	46	102	1973	12
-10 C (14 F): Days with min	24	9	1971	2
20 C (68 F): Tropical nights (min	44	19	1994	14
25 C (77 F): Days with min	1	1	2003	1
10 mm (0.39 in): Days with 10 mm or more rain	53	36	1983	19
25 mm (0.98 in): Days with 25 mm or more rain	53	19	1983	5
50 mm (1.97 in): Days with 50 mm or more rain	32	5	1978	2
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1979	1
10 cm (3.9 in): Days with 10 cm or more snowfall	36	5	1973	1
25 cm (9.8 in): Days with 25 cm or more snowfall	11	3	1966	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Kitt Peak 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Kitt Peak Threshold Days by Year (USC00024675)

Key Facts for Kitt Peak Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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