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Built 2026-10-19 (19 October 2026)

Wahweap Threshold Days by Year (USC00029114)

16 fixed thresholds counted per year at Wahweap (USC00029114): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wahweap Thresholds

  • Wahweap: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 2004 with 9.
  • Wahweap: nights with a minimum temperature at or below 0 C (32 F) in 40 years, most in 1964 with 101.
  • Wahweap: nights with a minimum temperature at or above 20 C (68 F) in 40 years, most in 2007 with 87.
  • Wahweap: nights with a minimum temperature at or above 25 C (77 F) in 38 years, most in 1970 with 21.
  • 16 fixed thresholds have at least one qualifying day at Wahweap.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Wahweap Days per year at Wahweap with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 143 in 1963. 0501001501962: 1301963: 1431964: 1311965: 1111966: 1391967: 1131968: 1071969: 1301970: 1141971: 1071972: 1131973: 1121974: 1251975: 1061976: 1161977: 1211981: 1071985: 1101994: 1351995: 1071996: 1421997: 1091998: 1072002: 1232003: 1252004: 1122005: 1102006: 1262007: 1242008: 1171962196519681971197419771994199720032006
Days per year at Wahweap with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 143 in 1963.
Days at or above 30 C (86 F) per year at Wahweap
YearDaysDecade average
1962130125.5
1963143125.5
1964131125.5
1965111125.5
1966139125.5
1967113125.5
1968107125.5
1969130125.5
1970114114.3
1971107114.3
1972113114.3
1973112114.3
1974125114.3
1975106114.3
1976116114.3
1977121114.3
1981107108.5
1985110108.5
1994135120
1995107120
1996142120
1997109120
1998107120
2002123119.6
2003125119.6
2004112119.6
2005110119.6
2006126119.6
2007124119.6
2008117119.6
First to last qualifying date each year at Wahweap For each year, a bar from the first to the last day at Wahweap meeting 30 C (86 F). 1962: 14 April 1962 to 5 October 19621963: 2 May 1963 to 12 October 19631964: 13 May 1964 to 10 October 19641965: 17 April 1965 to 11 October 19651966: 2 April 1966 to 1 October 19661967: 9 May 1967 to 13 October 19671968: 19 May 1968 to 28 September 19681969: 21 April 1969 to 2 October 19691970: 5 May 1970 to 20 September 19701971: 2 May 1971 to 25 September 19711972: 4 May 1972 to 1 October 19721973: 9 May 1973 to 23 September 19731974: 2 May 1974 to 26 September 19741975: 11 May 1975 to 5 October 19751976: 11 May 1976 to 20 September 19761977: 26 April 1977 to 6 October 19771981: 25 April 1981 to 1 October 19811985: 1 May 1985 to 25 September 19851994: 19 April 1994 to 30 September 19941995: 21 May 1995 to 13 October 19951996: 10 April 1996 to 12 October 19961997: 30 April 1997 to 7 October 19971998: 24 April 1998 to 1 October 19982002: 3 April 2002 to 27 September 20022003: 17 May 2003 to 11 October 20032004: 28 April 2004 to 19 September 20042005: 16 May 2005 to 3 October 20052006: 22 April 2006 to 2 October 20062007: 29 April 2007 to 21 September 20072008: 26 April 2008 to 9 October 200819621966197019741981199620032007JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Wahweap meeting 30 C (86 F).
First to last qualifying date each year at Wahweap
YearFirst dateLast date
19621962-04-141962-10-05
19631963-05-021963-10-12
19641964-05-131964-10-10
19651965-04-171965-10-11
19661966-04-021966-10-01
19671967-05-091967-10-13
19681968-05-191968-09-28
19691969-04-211969-10-02
19701970-05-051970-09-20
19711971-05-021971-09-25
19721972-05-041972-10-01
19731973-05-091973-09-23
19741974-05-021974-09-26
19751975-05-111975-10-05
19761976-05-111976-09-20
19771977-04-261977-10-06
19811981-04-251981-10-01
19851985-05-011985-09-25
19941994-04-191994-09-30
19951995-05-211995-10-13
19961996-04-101996-10-12
19971997-04-301997-10-07
19981998-04-241998-10-01
20022002-04-032002-09-27
20032003-05-172003-10-11
20042004-04-282004-09-19
20052005-05-162005-10-03
20062006-04-222006-10-02
20072007-04-292007-09-21
20082008-04-262008-10-09

Every Fixed Threshold

Fixed thresholds at Wahweap
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days301431963117
35 C (95 F): Days3094199672
40 C (104 F): Days292619945
45 C (113 F): Days2319973
90 F (32.2 C): Days30117199690
100 F (37.8 C): Days3058199644
110 F (43.3 C): Days5420034
120 F (48.9 C): Days1219972
0 C (32 F): Ice days (max141419673
0 C (32 F): Frost days (min40101196469
-10 C (14 F): Days with min191519672
20 C (68 F): Tropical nights (min4087200773
25 C (77 F): Days with min382119705
10 mm (0.39 in): Days with 10 mm or more rain44920043
25 mm (0.98 in): Days with 25 mm or more rain9219851
10 cm (3.9 in): Days with 10 cm or more snowfall1119631

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • Data for Wahweap 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 (2025-12-31).