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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Sierra Vista Threshold Days by Year (USC00027880)

14 fixed thresholds counted per year at Sierra Vista (USC00027880): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sierra Vista Thresholds

  • Sierra Vista: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1983 with 25.
  • Sierra Vista: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1988 with 7.
  • Sierra Vista: days with a maximum temperature at or above 30 C (86 F) in 28 years, most in 1989 with 166.
  • Sierra Vista: days with a maximum temperature at or above 35 C (95 F) in 28 years, most in 2020 with 82.
  • 14 fixed thresholds have at least one qualifying day at Sierra Vista.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at Sierra Vista Days per year at Sierra Vista with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 1989. 0501001502001983: 1171984: 1051985: 1091986: 1061987: 1041988: 1241989: 1661990: 941991: 1111992: 1091999: 1202000: 1352001: 1302002: 1182003: 1352004: 1152005: 1162007: 1302008: 1002018: 1412019: 1232020: 1652021: 1232022: 1342023: 1412024: 1472025: 1272026: 1251983198619891992200120042008202020232026
Days per year at Sierra Vista with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 166 in 1989.
Days at or above 30 C (86 F) per year at Sierra Vista
YearDaysDecade average
1983117118.7
1984105118.7
1985109118.7
1986106118.7
1987104118.7
1988124118.7
1989166118.7
199094108.5
1991111108.5
1992109108.5
1999120108.5
2000135122.4
2001130122.4
2002118122.4
2003135122.4
2004115122.4
2005116122.4
2007130122.4
2008100122.4
2018141132
2019123132
2020165137.4
2021123137.4
2022134137.4
2023141137.4
2024147137.4
2025127137.4
2026125137.4
First to last qualifying date each year at Sierra Vista For each year, a bar from the first to the last day at Sierra Vista meeting 30 C (86 F). 1983: 8 May 1983 to 10 October 19831984: 17 April 1984 to 1 October 19841985: 15 April 1985 to 8 October 19851986: 21 April 1986 to 21 September 19861987: 15 April 1987 to 28 October 19871988: 25 March 1988 to 8 October 19881989: 9 March 1989 to 24 October 19891990: 13 April 1990 to 27 September 19901991: 6 May 1991 to 19 October 19911992: 12 April 1992 to 18 October 19921999: 18 April 1999 to 15 October 19992000: 20 April 2000 to 8 October 20002001: 17 April 2001 to 30 October 20012002: 1 April 2002 to 6 October 20022003: 12 May 2003 to 21 October 20032004: 4 May 2004 to 5 October 20042005: 7 April 2005 to 22 October 20052007: 5 April 2007 to 21 October 20072008: 14 April 2008 to 26 October 20082018: 23 March 2018 to 6 October 20182019: 9 April 2019 to 9 October 20192020: 25 April 2020 to 19 November 20202021: 5 April 2021 to 10 October 20212022: 27 March 2022 to 28 September 20222023: 11 April 2023 to 6 November 20232024: 19 April 2024 to 28 October 20242025: 26 March 2025 to 8 October 20252026: 19 March 2026 to 10 October 20261983198719912001200520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sierra Vista meeting 30 C (86 F).
First to last qualifying date each year at Sierra Vista
YearFirst dateLast date
19831983-05-081983-10-10
19841984-04-171984-10-01
19851985-04-151985-10-08
19861986-04-211986-09-21
19871987-04-151987-10-28
19881988-03-251988-10-08
19891989-03-091989-10-24
19901990-04-131990-09-27
19911991-05-061991-10-19
19921992-04-121992-10-18
19991999-04-181999-10-15
20002000-04-202000-10-08
20012001-04-172001-10-30
20022002-04-012002-10-06
20032003-05-122003-10-21
20042004-05-042004-10-05
20052005-04-072005-10-22
20072007-04-052007-10-21
20082008-04-142008-10-26
20182018-03-232018-10-06
20192019-04-092019-10-09
20202020-04-252020-11-19
20212021-04-052021-10-10
20222022-03-272022-09-28
20232023-04-112023-11-06
20242024-04-192024-10-28
20252025-03-262025-10-08
20262026-03-192026-10-10

Every Fixed Threshold

Fixed thresholds at Sierra Vista
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days281661989125
35 C (95 F): Days2882202048
40 C (104 F): Days8920233
90 F (32.2 C): Days28136202097
100 F (37.8 C): Days2331202013
0 C (32 F): Ice days (max1120181
0 C (32 F): Frost days (min28111202223
-10 C (14 F): Days with min3219851
20 C (68 F): Tropical nights (min2844200217
25 C (77 F): Days with min8319901
10 mm (0.39 in): Days with 10 mm or more rain3525198313
25 mm (0.98 in): Days with 25 mm or more rain30719881
50 mm (1.97 in): Days with 50 mm or more rain4220192
10 cm (3.9 in): Days with 10 cm or more snowfall10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1983.

Download the Data

  • Data for Sierra Vista 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).