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Built 2026-10-19 (19 October 2026)

Blue Mtn Dam Threshold Days by Year (USC00030798)

19 fixed thresholds counted per year at Blue Mtn Dam (USC00030798): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blue Mtn Dam Thresholds

  • Blue Mtn Dam: days with a maximum temperature at or above 30 C (86 F) in 59 years, most in 2012 with 131.
  • Blue Mtn Dam: days with a maximum temperature at or above 35 C (95 F) in 59 years, most in 1980 with 86.
  • Blue Mtn Dam: days with a maximum temperature at or above 90 F (32.2 C) in 59 years, most in 1998 with 105.
  • Blue Mtn Dam: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1993 with 99.
  • 19 fixed thresholds have at least one qualifying day at Blue Mtn Dam.
59 years with a qualifying day
Days at or above 30 C (86 F) per year at Blue Mtn Dam Days per year at Blue Mtn Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 131 in 2012. 0501001501967: 881968: 941969: 1081970: 1041971: 1031972: 1131973: 941974: 791975: 821976: 761977: 1231978: 1051979: 851980: 1211981: 981982: 1021983: 1031984: 1001985: 991986: 961987: 1101988: 1141989: 831990: 991991: 1001992: 771993: 901994: 1021995: 1061996: 1021997: 1041998: 1251999: 1072000: 1062001: 1082002: 1102003: 972004: 912005: 1242006: 1172007: 1132008: 862009: 812010: 1232011: 1232012: 1312013: 1022014: 792015: 1002016: 1152017: 992018: 1142019: 1172020: 832021: 1032022: 1242023: 1242024: 1132026: 1061967197319791985199119972003200920152021
Days per year at Blue Mtn Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 131 in 2012.
Days at or above 30 C (86 F) per year at Blue Mtn Dam
YearDaysDecade average
19678896.7
19689496.7
196910896.7
197010496.4
197110396.4
197211396.4
19739496.4
19747996.4
19758296.4
19767696.4
197712396.4
197810596.4
19798596.4
1980121102.6
198198102.6
1982102102.6
1983103102.6
1984100102.6
198599102.6
198696102.6
1987110102.6
1988114102.6
198983102.6
199099101.2
1991100101.2
199277101.2
199390101.2
1994102101.2
1995106101.2
1996102101.2
1997104101.2
1998125101.2
1999107101.2
2000106103.3
2001108103.3
2002110103.3
200397103.3
200491103.3
2005124103.3
2006117103.3
2007113103.3
200886103.3
200981103.3
2010123110.3
2011123110.3
2012131110.3
2013102110.3
201479110.3
2015100110.3
2016115110.3
201799110.3
2018114110.3
2019117110.3
202083108.8
2021103108.8
2022124108.8
2023124108.8
2024113108.8
2026106108.8
First to last qualifying date each year at Blue Mtn Dam For each year, a bar from the first to the last day at Blue Mtn Dam meeting 30 C (86 F). 1967: 12 March 1967 to 7 October 19671968: 3 May 1968 to 31 October 19681969: 20 March 1969 to 21 October 19691970: 29 April 1970 to 3 October 19701971: 28 April 1971 to 13 October 19711972: 8 April 1972 to 17 October 19721973: 10 May 1973 to 4 October 19731974: 1 April 1974 to 1 September 19741975: 19 May 1975 to 14 October 19751976: 12 April 1976 to 4 October 19761977: 8 April 1977 to 2 October 19771978: 2 April 1978 to 22 October 19781979: 17 April 1979 to 22 October 19791980: 22 April 1980 to 11 October 19801981: 4 April 1981 to 6 October 19811982: 18 March 1982 to 6 October 19821983: 26 May 1983 to 5 October 19831984: 25 April 1984 to 25 September 19841985: 29 March 1985 to 14 October 19851986: 8 April 1986 to 4 October 19861987: 11 April 1987 to 26 September 19871988: 5 April 1988 to 18 October 19881989: 12 March 1989 to 17 October 19891990: 30 April 1990 to 4 October 19901991: 13 May 1991 to 19 October 19911992: 24 April 1992 to 14 October 19921993: 7 May 1993 to 2 October 19931994: 14 April 1994 to 7 October 19941995: 20 March 1995 to 19 October 19951996: 19 April 1996 to 24 September 19961997: 22 March 1997 to 7 October 19971998: 15 April 1998 to 1 October 19981999: 21 April 1999 to 17 October 19992000: 20 April 2000 to 6 October 20002001: 4 April 2001 to 24 September 20012002: 15 April 2002 to 7 October 20022003: 14 April 2003 to 25 October 20032004: 5 May 2004 to 19 October 20042005: 13 March 2005 to 20 October 20052006: 3 April 2006 to 19 October 20062007: 3 April 2007 to 9 October 20072008: 23 April 2008 to 13 September 20082009: 23 April 2009 to 28 September 20092010: 4 May 2010 to 19 October 20102011: 4 April 2011 to 18 October 20112012: 1 April 2012 to 28 September 20122013: 17 April 2013 to 7 October 20132014: 11 April 2014 to 27 October 20142015: 1 April 2015 to 16 October 20152016: 16 March 2016 to 17 November 20162017: 16 May 2017 to 16 October 20172018: 8 May 2018 to 9 October 20182019: 10 April 2019 to 8 October 20192020: 27 March 2020 to 1 October 20202021: 27 May 2021 to 12 October 20212022: 10 May 2022 to 17 October 20222023: 4 April 2023 to 23 October 20232024: 14 April 2024 to 30 October 20242026: 23 March 2026 to 14 October 202619671975198319911999200720152023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Blue Mtn Dam meeting 30 C (86 F).
First to last qualifying date each year at Blue Mtn Dam
YearFirst dateLast date
19671967-03-121967-10-07
19681968-05-031968-10-31
19691969-03-201969-10-21
19701970-04-291970-10-03
19711971-04-281971-10-13
19721972-04-081972-10-17
19731973-05-101973-10-04
19741974-04-011974-09-01
19751975-05-191975-10-14
19761976-04-121976-10-04
19771977-04-081977-10-02
19781978-04-021978-10-22
19791979-04-171979-10-22
19801980-04-221980-10-11
19811981-04-041981-10-06
19821982-03-181982-10-06
19831983-05-261983-10-05
19841984-04-251984-09-25
19851985-03-291985-10-14
19861986-04-081986-10-04
19871987-04-111987-09-26
19881988-04-051988-10-18
19891989-03-121989-10-17
19901990-04-301990-10-04
19911991-05-131991-10-19
19921992-04-241992-10-14
19931993-05-071993-10-02
19941994-04-141994-10-07
19951995-03-201995-10-19
19961996-04-191996-09-24
19971997-03-221997-10-07
19981998-04-151998-10-01
19991999-04-211999-10-17
20002000-04-202000-10-06
20012001-04-042001-09-24
20022002-04-152002-10-07
20032003-04-142003-10-25
20042004-05-052004-10-19
20052005-03-132005-10-20
20062006-04-032006-10-19
20072007-04-032007-10-09
20082008-04-232008-09-13
20092009-04-232009-09-28
20102010-05-042010-10-19
20112011-04-042011-10-18
20122012-04-012012-09-28
20132013-04-172013-10-07
20142014-04-112014-10-27
20152015-04-012015-10-16
20162016-03-162016-11-17
20172017-05-162017-10-16
20182018-05-082018-10-09
20192019-04-102019-10-08
20202020-03-272020-10-01
20212021-05-272021-10-12
20222022-05-102022-10-17
20232023-04-042023-10-23
20242024-04-142024-10-30
20262026-03-232026-10-14

Every Fixed Threshold

Fixed thresholds at Blue Mtn Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days591312012106
35 C (95 F): Days5986198059
40 C (104 F): Days2926198011
45 C (113 F): Days1220112
90 F (32.2 C): Days59105199887
100 F (37.8 C): Days5050198033
110 F (43.3 C): Days3420114
0 C (32 F): Ice days (max552119783
0 C (32 F): Frost days (min5999199331
-10 C (14 F): Days with min492219799
20 C (68 F): Tropical nights (min591071998101
25 C (77 F): Days with min3121201115
10 mm (0.39 in): Days with 10 mm or more rain585319739
25 mm (0.98 in): Days with 25 mm or more rain582619684
50 mm (1.97 in): Days with 50 mm or more rain561020185
100 mm (3.94 in): Days with 100 mm or more rain13219982
200 mm (7.87 in): Days with 200 mm or more rain2119821
10 cm (3.9 in): Days with 10 cm or more snowfall16219781
25 cm (9.8 in): Days with 25 cm or more snowfall1119881

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

  • Data for Blue Mtn Dam 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).