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Built 2026-10-19 (19 October 2026)

Athens Ou Threshold Days by Year (USC00330279)

17 fixed thresholds counted per year at Athens Ou (USC00330279): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Athens Ou Thresholds

  • Athens Ou: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 2011 with 50.
  • Athens Ou: days with 25 mm (0.98 in) or more of precipitation in 74 years, most in 1989 with 15.
  • Athens Ou: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1975 with 3.
  • Athens Ou: days with 10 cm (3.9 in) or more of snowfall in 36 years, most in 1960 with 5.
  • 17 fixed thresholds have at least one qualifying day at Athens Ou.
26 years with a qualifying day
Days at or above 30 C (86 F) per year at Athens Ou Days per year at Athens Ou with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 1991. 02550751001949: 741982: 491983: 841984: 611985: 571986: 721987: 851988: 751989: 391990: 521991: 891995: 461998: 331999: 522000: 142001: 252002: 432003: 72004: 72005: 472006: 242007: 562008: 232009: 72010: 352011: 34194919841987199019982001200420072010
Days per year at Athens Ou with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 1991.
Days at or above 30 C (86 F) per year at Athens Ou
YearDaysDecade average
19497474
19824965.3
19838465.3
19846165.3
19855765.3
19867265.3
19878565.3
19887565.3
19893965.3
19905254.4
19918954.4
19954654.4
19983354.4
19995254.4
20001425.3
20012525.3
20024325.3
2003725.3
2004725.3
20054725.3
20062425.3
20075625.3
20082325.3
2009725.3
20103534.5
20113434.5
First to last qualifying date each year at Athens Ou For each year, a bar from the first to the last day at Athens Ou meeting 30 C (86 F). 1949: 3 May 1949 to 11 October 19491982: 7 May 1982 to 7 October 19821983: 8 May 1983 to 20 September 19831984: 27 April 1984 to 23 September 19841985: 19 April 1985 to 24 September 19851986: 31 March 1986 to 1 October 19861987: 22 April 1987 to 28 September 19871988: 6 April 1988 to 12 September 19881989: 19 May 1989 to 22 September 19891990: 25 April 1990 to 8 September 19901991: 30 April 1991 to 19 September 19911995: 19 June 1995 to 7 September 19951998: 15 May 1998 to 28 September 19981999: 12 May 1999 to 13 September 19992000: 7 May 2000 to 1 September 20002001: 4 May 2001 to 10 September 20012002: 17 April 2002 to 21 September 20022003: 27 June 2003 to 28 August 20032004: 10 June 2004 to 29 August 20042005: 6 June 2005 to 23 September 20052006: 30 May 2006 to 27 August 20062007: 1 May 2007 to 10 October 20072008: 6 June 2008 to 15 September 20082009: 25 April 2009 to 18 August 20092010: 3 April 2010 to 25 September 20102011: 11 April 2011 to 4 September 20111949198519891998200220062010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Athens Ou meeting 30 C (86 F).
First to last qualifying date each year at Athens Ou
YearFirst dateLast date
19491949-05-031949-10-11
19821982-05-071982-10-07
19831983-05-081983-09-20
19841984-04-271984-09-23
19851985-04-191985-09-24
19861986-03-311986-10-01
19871987-04-221987-09-28
19881988-04-061988-09-12
19891989-05-191989-09-22
19901990-04-251990-09-08
19911991-04-301991-09-19
19951995-06-191995-09-07
19981998-05-151998-09-28
19991999-05-121999-09-13
20002000-05-072000-09-01
20012001-05-042001-09-10
20022002-04-172002-09-21
20032003-06-272003-08-28
20042004-06-102004-08-29
20052005-06-062005-09-23
20062006-05-302006-08-27
20072007-05-012007-10-10
20082008-06-062008-09-15
20092009-04-252009-08-18
20102010-04-032010-09-25
20112011-04-112011-09-04

Every Fixed Threshold

Fixed thresholds at Athens Ou
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2689199134
35 C (95 F): Days142919882
40 C (104 F): Days1119881
90 F (32.2 C): Days235019837
100 F (37.8 C): Days3819888
0 C (32 F): Ice days (max2652201021
0 C (32 F): Frost days (min181621989111
-10 C (14 F): Days with min1855198915
-20 C (-4 F): Days with min9819891
-30 C (-22 F): Days with min1419894
20 C (68 F): Tropical nights (min1633194918
10 mm (0.39 in): Days with 10 mm or more rain7450201129
25 mm (0.98 in): Days with 25 mm or more rain7415198911
50 mm (1.97 in): Days with 50 mm or more rain43319753
100 mm (3.94 in): Days with 100 mm or more rain5220041
10 cm (3.9 in): Days with 10 cm or more snowfall36519601
25 cm (9.8 in): Days with 25 cm or more snowfall5119601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Athens Ou 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 (2026-10-12).