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Built 2026-10-19 (19 October 2026)

Vienna Threshold Days by Year (USC00448737)

16 fixed thresholds counted per year at Vienna (USC00448737): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Vienna Thresholds

  • Vienna: days with 10 mm (0.39 in) or more of precipitation in 86 years, most in 2003 with 55.
  • Vienna: days with 25 mm (0.98 in) or more of precipitation in 86 years, most in 1945 with 18.
  • Vienna: days with 50 mm (1.97 in) or more of precipitation in 77 years, most in 1996 with 6.
  • Vienna: days with 10 cm (3.9 in) or more of snowfall in 55 years, most in 1966 with 6.
  • 16 fixed thresholds have at least one qualifying day at Vienna.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Vienna Days per year at Vienna with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 85 in 2015. 02550751001996: 101997: 291998: 361999: 402000: 222001: 232002: 472003: 122004: 142005: 242007: 352008: 242009: 112010: 512011: 432012: 522013: 182014: 702015: 852016: 652017: 402018: 482019: 562020: 472021: 482022: 302023: 222024: 332025: 352026: 301996199920022005200920122015201820212024
Days per year at Vienna with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 85 in 2015.
Days at or above 30 C (86 F) per year at Vienna
YearDaysDecade average
19961028.8
19972928.8
19983628.8
19994028.8
20002223.6
20012323.6
20024723.6
20031223.6
20041423.6
20052423.6
20073523.6
20082423.6
20091123.6
20105152.8
20114352.8
20125252.8
20131852.8
20147052.8
20158552.8
20166552.8
20174052.8
20184852.8
20195652.8
20204735
20214835
20223035
20232235
20243335
20253535
20263035
First to last qualifying date each year at Vienna For each year, a bar from the first to the last day at Vienna meeting 30 C (86 F). 1996: 23 April 1996 to 24 August 19961997: 20 May 1997 to 3 September 19971998: 31 March 1998 to 28 September 19981999: 31 May 1999 to 19 August 19992000: 8 May 2000 to 12 August 20002001: 10 April 2001 to 13 August 20012002: 17 April 2002 to 23 August 20022003: 26 June 2003 to 31 August 20032004: 19 April 2004 to 29 August 20042005: 7 June 2005 to 22 August 20052007: 27 May 2007 to 10 October 20072008: 8 June 2008 to 15 September 20082009: 27 April 2009 to 25 August 20092010: 7 April 2010 to 26 September 20102011: 27 May 2011 to 15 September 20112012: 5 April 2012 to 9 September 20122013: 11 April 2013 to 13 September 20132014: 9 May 2014 to 29 October 20142015: 5 May 2015 to 20 September 20152016: 26 May 2016 to 24 September 20162017: 30 April 2017 to 26 September 20172018: 2 May 2018 to 7 September 20182019: 20 May 2019 to 3 October 20192020: 4 June 2020 to 4 September 20202021: 21 May 2021 to 31 August 20212022: 21 May 2022 to 31 August 20222023: 3 June 2023 to 9 September 20232024: 30 April 2024 to 30 August 20242025: 13 June 2025 to 7 September 20252026: 16 April 2026 to 3 September 202619962000200420092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Vienna meeting 30 C (86 F).
First to last qualifying date each year at Vienna
YearFirst dateLast date
19961996-04-231996-08-24
19971997-05-201997-09-03
19981998-03-311998-09-28
19991999-05-311999-08-19
20002000-05-082000-08-12
20012001-04-102001-08-13
20022002-04-172002-08-23
20032003-06-262003-08-31
20042004-04-192004-08-29
20052005-06-072005-08-22
20072007-05-272007-10-10
20082008-06-082008-09-15
20092009-04-272009-08-25
20102010-04-072010-09-26
20112011-05-272011-09-15
20122012-04-052012-09-09
20132013-04-112013-09-13
20142014-05-092014-10-29
20152015-05-052015-09-20
20162016-05-262016-09-24
20172017-04-302017-09-26
20182018-05-022018-09-07
20192019-05-202019-10-03
20202020-06-042020-09-04
20212021-05-212021-08-31
20222022-05-212022-08-31
20232023-06-032023-09-09
20242024-04-302024-08-30
20252025-06-132025-09-07
20262026-04-162026-09-03

Every Fixed Threshold

Fixed thresholds at Vienna
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3085201530
35 C (95 F): Days91020151
90 F (32.2 C): Days2944201510
100 F (37.8 C): Days1120151
0 C (32 F): Ice days (max3025201418
0 C (32 F): Frost days (min30126201371
-10 C (14 F): Days with min2725201419
20 C (68 F): Tropical nights (min3059201540
25 C (77 F): Days with min4220142
10 mm (0.39 in): Days with 10 mm or more rain8655200336
25 mm (0.98 in): Days with 25 mm or more rain8618194510
50 mm (1.97 in): Days with 50 mm or more rain77619963
100 mm (3.94 in): Days with 100 mm or more rain13219561
10 cm (3.9 in): Days with 10 cm or more snowfall55619662
25 cm (9.8 in): Days with 25 cm or more snowfall12319872
50 cm (19.7 in): Days with 50 cm or more snowfall1119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Vienna 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).