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Built 2026-10-19 (19 October 2026)

Navajo Dam Threshold Days by Year (USC00296061)

15 fixed thresholds counted per year at Navajo Dam (USC00296061): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Navajo Dam Thresholds

  • Navajo Dam: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1983 with 24.
  • Navajo Dam: days with a maximum temperature at or above 30 C (86 F) in 32 years, most in 2024 with 116.
  • Navajo Dam: days with a maximum temperature at or above 90 F (32.2 C) in 32 years, most in 2025 with 81.
  • Navajo Dam: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1970 with 186.
  • 15 fixed thresholds have at least one qualifying day at Navajo Dam.
32 years with a qualifying day
Days at or above 30 C (86 F) per year at Navajo Dam Days per year at Navajo Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 116 in 2024. 0501001501964: 541965: 451966: 671967: 561968: 461969: 621970: 581973: 601974: 721975: 491978: 771980: 681981: 791982: 651983: 681984: 861985: 771986: 631987: 781988: 891989: 831990: 941991: 881992: 901993: 641994: 991995: 731996: 812023: 822024: 1162025: 972026: 11019641968197419811985198919932023
Days per year at Navajo Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 116 in 2024.
Days at or above 30 C (86 F) per year at Navajo Dam
YearDaysDecade average
19645455
19654555
19666755
19675655
19684655
19696255
19705863.2
19736063.2
19747263.2
19754963.2
19787763.2
19806875.6
19817975.6
19826575.6
19836875.6
19848675.6
19857775.6
19866375.6
19877875.6
19888975.6
19898375.6
19909484.1
19918884.1
19929084.1
19936484.1
19949984.1
19957384.1
19968184.1
202382101.3
2024116101.3
202597101.3
2026110101.3
First to last qualifying date each year at Navajo Dam For each year, a bar from the first to the last day at Navajo Dam meeting 30 C (86 F). 1964: 25 May 1964 to 5 September 19641965: 22 June 1965 to 29 August 19651966: 14 June 1966 to 24 September 19661967: 24 May 1967 to 5 September 19671968: 31 May 1968 to 12 September 19681969: 27 May 1969 to 8 September 19691970: 19 June 1970 to 1 September 19701973: 9 June 1973 to 2 September 19731974: 27 May 1974 to 12 September 19741975: 9 June 1975 to 3 September 19751978: 10 June 1978 to 11 September 19781980: 9 June 1980 to 20 September 19801981: 6 June 1981 to 6 September 19811982: 27 May 1982 to 26 September 19821983: 29 May 1983 to 5 September 19831984: 12 May 1984 to 17 September 19841985: 3 June 1985 to 14 September 19851986: 4 May 1986 to 31 August 19861987: 25 April 1987 to 13 September 19871988: 14 May 1988 to 2 October 19881989: 22 April 1989 to 1 October 19891990: 18 May 1990 to 23 September 19901991: 18 May 1991 to 30 September 19911992: 12 April 1992 to 4 October 19921993: 26 May 1993 to 23 September 19931994: 17 May 1994 to 29 September 19941995: 13 June 1995 to 7 September 19951996: 13 May 1996 to 5 September 19962023: 6 June 2023 to 11 September 20232024: 28 May 2024 to 7 October 20242025: 23 May 2025 to 10 September 20252026: 26 March 2026 to 14 September 202619641968197419811985198919932023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Navajo Dam meeting 30 C (86 F).
First to last qualifying date each year at Navajo Dam
YearFirst dateLast date
19641964-05-251964-09-05
19651965-06-221965-08-29
19661966-06-141966-09-24
19671967-05-241967-09-05
19681968-05-311968-09-12
19691969-05-271969-09-08
19701970-06-191970-09-01
19731973-06-091973-09-02
19741974-05-271974-09-12
19751975-06-091975-09-03
19781978-06-101978-09-11
19801980-06-091980-09-20
19811981-06-061981-09-06
19821982-05-271982-09-26
19831983-05-291983-09-05
19841984-05-121984-09-17
19851985-06-031985-09-14
19861986-05-041986-08-31
19871987-04-251987-09-13
19881988-05-141988-10-02
19891989-04-221989-10-01
19901990-05-181990-09-23
19911991-05-181991-09-30
19921992-04-121992-10-04
19931993-05-261993-09-23
19941994-05-171994-09-29
19951995-06-131995-09-07
19961996-05-131996-09-05
20232023-06-062023-09-11
20242024-05-282024-10-07
20252025-05-232025-09-10
20262026-03-262026-09-14

Every Fixed Threshold

Fixed thresholds at Navajo Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days321162024110
35 C (95 F): Days3040202543
40 C (104 F): Days1119801
90 F (32.2 C): Days3281202586
100 F (37.8 C): Days149198915
0 C (32 F): Ice days (max312519663
0 C (32 F): Frost days (min32186197060
-10 C (14 F): Days with min314319754
-20 C (-4 F): Days with min6519781
20 C (68 F): Tropical nights (min187199515
10 mm (0.39 in): Days with 10 mm or more rain4724198311
25 mm (0.98 in): Days with 25 mm or more rain26219702
50 mm (1.97 in): Days with 50 mm or more rain4119701
10 cm (3.9 in): Days with 10 cm or more snowfall17419871
25 cm (9.8 in): Days with 25 cm or more snowfall1219872

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Navajo 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).