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Built 2026-10-19 (19 October 2026)

Tempe Asu Threshold Days by Year (USC00028499)

13 fixed thresholds counted per year at Tempe Asu (USC00028499): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tempe Asu Thresholds

  • Tempe Asu: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1992 with 18.
  • Tempe Asu: nights with a minimum temperature at or above 20 C (68 F) in 64 years, most in 2001 with 145.
  • Tempe Asu: nights with a minimum temperature at or above 25 C (77 F) in 64 years, most in 1988 with 72.
  • Tempe Asu: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1964 with 64.
  • 13 fixed thresholds have at least one qualifying day at Tempe Asu.
56 years with a qualifying day
Days at or above 30 C (86 F) per year at Tempe Asu Days per year at Tempe Asu with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 219 in 1989. 01002003001953: 1811954: 1991955: 1951956: 2051957: 1691958: 1881959: 1921960: 1901961: 1891962: 2051963: 1971964: 1851965: 1891966: 1831967: 1961968: 1931969: 1871970: 1791971: 1991972: 2141973: 1911974: 1981975: 1841976: 1961977: 1991978: 1981979: 1911980: 1891983: 1761984: 1821985: 1921986: 2071987: 2021988: 2081989: 2191990: 2011991: 1791992: 1941993: 1851994: 1791995: 1981996: 1941998: 1692001: 2112002: 1922003: 1852004: 2072005: 1812006: 2052007: 2122008: 1952009: 1902010: 1762011: 1892020: 1862026: 1841953195919651971197719851991199820062020
Days per year at Tempe Asu with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 219 in 1989.
Days at or above 30 C (86 F) per year at Tempe Asu
YearDaysDecade average
1953181189.9
1954199189.9
1955195189.9
1956205189.9
1957169189.9
1958188189.9
1959192189.9
1960190191.4
1961189191.4
1962205191.4
1963197191.4
1964185191.4
1965189191.4
1966183191.4
1967196191.4
1968193191.4
1969187191.4
1970179194.9
1971199194.9
1972214194.9
1973191194.9
1974198194.9
1975184194.9
1976196194.9
1977199194.9
1978198194.9
1979191194.9
1980189196.9
1983176196.9
1984182196.9
1985192196.9
1986207196.9
1987202196.9
1988208196.9
1989219196.9
1990201187.4
1991179187.4
1992194187.4
1993185187.4
1994179187.4
1995198187.4
1996194187.4
1998169187.4
2001211197.6
2002192197.6
2003185197.6
2004207197.6
2005181197.6
2006205197.6
2007212197.6
2008195197.6
2009190197.6
2010176182.5
2011189182.5
2020186185
2026184185
First to last qualifying date each year at Tempe Asu For each year, a bar from the first to the last day at Tempe Asu meeting 30 C (86 F). 1953: 25 March 1953 to 30 November 19531954: 7 February 1954 to 13 November 19541955: 9 March 1955 to 21 November 19551956: 18 March 1956 to 12 November 19561957: 14 February 1957 to 11 October 19571958: 15 April 1958 to 11 November 19581959: 23 March 1959 to 29 October 19591960: 20 March 1960 to 4 November 19601961: 15 March 1961 to 28 October 19611962: 11 February 1962 to 13 November 19621963: 4 February 1963 to 13 November 19631964: 29 March 1964 to 30 October 19641965: 31 March 1965 to 7 November 19651966: 13 March 1966 to 15 November 19661967: 2 March 1967 to 16 November 19671968: 28 March 1968 to 30 October 19681969: 22 March 1969 to 29 October 19691970: 9 February 1970 to 7 November 19701971: 20 January 1971 to 12 November 19711972: 28 February 1972 to 17 October 19721973: 11 April 1973 to 13 November 19731974: 2 March 1974 to 27 October 19741975: 2 March 1975 to 8 November 19751976: 19 March 1976 to 9 November 19761977: 18 February 1977 to 6 November 19771978: 17 March 1978 to 8 November 19781979: 6 April 1979 to 29 October 19791980: 8 April 1980 to 12 November 19801983: 31 March 1983 to 3 November 19831984: 20 March 1984 to 12 November 19841985: 24 March 1985 to 4 November 19851986: 25 February 1986 to 12 November 19861987: 1 April 1987 to 4 November 19871988: 20 March 1988 to 7 November 19881989: 23 February 1989 to 19 November 19891990: 24 February 1990 to 18 November 19901991: 4 April 1991 to 8 November 19911992: 8 April 1992 to 15 November 19921993: 23 March 1993 to 26 October 19931994: 15 March 1994 to 31 October 19941995: 3 February 1995 to 25 November 19951996: 8 February 1996 to 19 November 19961998: 23 March 1998 to 24 October 19982001: 19 March 2001 to 19 November 20012002: 21 March 2002 to 22 November 20022003: 13 March 2003 to 30 October 20032004: 7 March 2004 to 7 November 20042005: 10 March 2005 to 14 November 20052006: 8 February 2006 to 22 November 20062007: 7 March 2007 to 19 November 20072008: 21 March 2008 to 19 November 20082009: 1 March 2009 to 10 November 20092010: 17 March 2010 to 18 November 20102011: 10 March 2011 to 1 November 20112020: 6 March 2020 to 21 November 20202026: 1 February 2026 to 10 October 202619531960196719741983199019982007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tempe Asu meeting 30 C (86 F).
First to last qualifying date each year at Tempe Asu
YearFirst dateLast date
19531953-03-251953-11-30
19541954-02-071954-11-13
19551955-03-091955-11-21
19561956-03-181956-11-12
19571957-02-141957-10-11
19581958-04-151958-11-11
19591959-03-231959-10-29
19601960-03-201960-11-04
19611961-03-151961-10-28
19621962-02-111962-11-13
19631963-02-041963-11-13
19641964-03-291964-10-30
19651965-03-311965-11-07
19661966-03-131966-11-15
19671967-03-021967-11-16
19681968-03-281968-10-30
19691969-03-221969-10-29
19701970-02-091970-11-07
19711971-01-201971-11-12
19721972-02-281972-10-17
19731973-04-111973-11-13
19741974-03-021974-10-27
19751975-03-021975-11-08
19761976-03-191976-11-09
19771977-02-181977-11-06
19781978-03-171978-11-08
19791979-04-061979-10-29
19801980-04-081980-11-12
19831983-03-311983-11-03
19841984-03-201984-11-12
19851985-03-241985-11-04
19861986-02-251986-11-12
19871987-04-011987-11-04
19881988-03-201988-11-07
19891989-02-231989-11-19
19901990-02-241990-11-18
19911991-04-041991-11-08
19921992-04-081992-11-15
19931993-03-231993-10-26
19941994-03-151994-10-31
19951995-02-031995-11-25
19961996-02-081996-11-19
19981998-03-231998-10-24
20012001-03-192001-11-19
20022002-03-212002-11-22
20032003-03-132003-10-30
20042004-03-072004-11-07
20052005-03-102005-11-14
20062006-02-082006-11-22
20072007-03-072007-11-19
20082008-03-212008-11-19
20092009-03-012009-11-10
20102010-03-172010-11-18
20112011-03-102011-11-01
20202020-03-062020-11-21
20262026-02-012026-10-10

Every Fixed Threshold

Fixed thresholds at Tempe Asu
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days562191989184
35 C (95 F): Days561641989137
40 C (104 F): Days5693202074
45 C (113 F): Days421419744
90 F (32.2 C): Days561961972162
100 F (37.8 C): Days561282020111
110 F (43.3 C): Days5534197022
0 C (32 F): Frost days (min596419645
20 C (68 F): Tropical nights (min641452001106
25 C (77 F): Days with min6472198863
10 mm (0.39 in): Days with 10 mm or more rain691819921
25 mm (0.98 in): Days with 25 mm or more rain48419742
50 mm (1.97 in): Days with 50 mm or more rain5119642

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

  • Data for Tempe Asu 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 . Last revised (2026-10-17).