Built 2026-10-19 (19 October 2026)

Illahe Threshold Days by Year (USC00354133)

17 fixed thresholds counted per year at Illahe (USC00354133): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Illahe Thresholds

  • Illahe: nights with a minimum temperature at or below 0 C (32 F) in 54 years, most in 1982 with 58.
  • Illahe: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 1951 with 90.
  • Illahe: days with a maximum temperature at or above 35 C (95 F) in 51 years, most in 2002 with 42.
  • Illahe: days with a maximum temperature at or above 90 F (32.2 C) in 51 years, most in 2002 with 70.
  • 17 fixed thresholds have at least one qualifying day at Illahe.
51 years with a qualifying day
Days at or above 30 C (86 F) per year at Illahe Days per year at Illahe with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 1951. 02550751001939: 761942: 661943: 691944: 731946: 621947: 521948: 471949: 701950: 751951: 901952: 831953: 541957: 571959: 511960: 681961: 701962: 581968: 551969: 431970: 681971: 441972: 691973: 681974: 811975: 691976: 531977: 521978: 451979: 541980: 541981: 591982: 471983: 291984: 551986: 651987: 861988: 831989: 701992: 801993: 461994: 641995: 621996: 631997: 441998: 751999: 782000: 782001: 712002: 882003: 762004: 65193919481957196919751981198819962002
Days per year at Illahe with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 1951.
Days at or above 30 C (86 F) per year at Illahe
YearDaysDecade average
19397676
19426662.7
19436962.7
19447362.7
19466262.7
19475262.7
19484762.7
19497062.7
19507568.3
19519068.3
19528368.3
19535468.3
19575768.3
19595168.3
19606858.8
19617058.8
19625858.8
19685558.8
19694358.8
19706860.3
19714460.3
19726960.3
19736860.3
19748160.3
19756960.3
19765360.3
19775260.3
19784560.3
19795460.3
19805460.9
19815960.9
19824760.9
19832960.9
19845560.9
19866560.9
19878660.9
19888360.9
19897060.9
19928064
19934664
19946464
19956264
19966364
19974464
19987564
19997864
20007875.6
20017175.6
20028875.6
20037675.6
20046575.6
First to last qualifying date each year at Illahe For each year, a bar from the first to the last day at Illahe meeting 30 C (86 F). 1939: 16 April 1939 to 23 September 19391942: 20 May 1942 to 5 October 19421943: 12 April 1943 to 30 September 19431944: 2 May 1944 to 27 September 19441946: 1 May 1946 to 28 September 19461947: 12 April 1947 to 24 September 19471948: 23 May 1948 to 12 September 19481949: 14 April 1949 to 26 September 19491950: 19 April 1950 to 21 September 19501951: 10 April 1951 to 27 September 19511952: 17 April 1952 to 14 October 19521953: 4 May 1953 to 24 September 19531957: 28 April 1957 to 23 September 19571959: 7 May 1959 to 12 September 19591960: 1 June 1960 to 30 September 19601961: 18 May 1961 to 5 October 19611962: 13 April 1962 to 24 September 19621968: 28 April 1968 to 29 September 19681969: 1 June 1969 to 12 September 19691970: 2 May 1970 to 30 September 19701971: 10 May 1971 to 22 September 19711972: 12 May 1972 to 7 October 19721973: 11 May 1973 to 28 September 19731974: 4 May 1974 to 18 October 19741975: 12 May 1975 to 30 September 19751976: 7 May 1976 to 12 October 19761977: 5 June 1977 to 11 September 19771978: 8 May 1978 to 2 September 19781979: 19 May 1979 to 9 October 19791980: 1 July 1980 to 9 October 19801981: 29 April 1981 to 16 September 19811982: 24 May 1982 to 23 September 19821983: 20 May 1983 to 12 September 19831984: 27 May 1984 to 19 September 19841986: 20 April 1986 to 6 September 19861987: 26 April 1987 to 6 October 19871988: 11 May 1988 to 21 October 19881989: 12 April 1989 to 9 October 19891992: 1 May 1992 to 23 October 19921993: 18 June 1993 to 29 September 19931994: 18 May 1994 to 20 September 19941995: 15 May 1995 to 24 September 19951996: 6 July 1996 to 8 September 19961997: 26 March 1997 to 16 August 19971998: 27 April 1998 to 30 September 19981999: 22 May 1999 to 2 October 19992000: 2 April 2000 to 6 October 20002001: 7 May 2001 to 23 September 20012002: 4 June 2002 to 9 October 20022003: 22 May 2003 to 23 September 20032004: 25 April 2004 to 11 September 200419391949196019721979198719962003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Illahe meeting 30 C (86 F).
First to last qualifying date each year at Illahe
YearFirst dateLast date
19391939-04-161939-09-23
19421942-05-201942-10-05
19431943-04-121943-09-30
19441944-05-021944-09-27
19461946-05-011946-09-28
19471947-04-121947-09-24
19481948-05-231948-09-12
19491949-04-141949-09-26
19501950-04-191950-09-21
19511951-04-101951-09-27
19521952-04-171952-10-14
19531953-05-041953-09-24
19571957-04-281957-09-23
19591959-05-071959-09-12
19601960-06-011960-09-30
19611961-05-181961-10-05
19621962-04-131962-09-24
19681968-04-281968-09-29
19691969-06-011969-09-12
19701970-05-021970-09-30
19711971-05-101971-09-22
19721972-05-121972-10-07
19731973-05-111973-09-28
19741974-05-041974-10-18
19751975-05-121975-09-30
19761976-05-071976-10-12
19771977-06-051977-09-11
19781978-05-081978-09-02
19791979-05-191979-10-09
19801980-07-011980-10-09
19811981-04-291981-09-16
19821982-05-241982-09-23
19831983-05-201983-09-12
19841984-05-271984-09-19
19861986-04-201986-09-06
19871987-04-261987-10-06
19881988-05-111988-10-21
19891989-04-121989-10-09
19921992-05-011992-10-23
19931993-06-181993-09-29
19941994-05-181994-09-20
19951995-05-151995-09-24
19961996-07-061996-09-08
19971997-03-261997-08-16
19981998-04-271998-09-30
19991999-05-221999-10-02
20002000-04-022000-10-06
20012001-05-072001-09-23
20022002-06-042002-10-09
20032003-05-222003-09-23
20042004-04-252004-09-11

Every Fixed Threshold

Fixed thresholds at Illahe
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5190195165
35 C (95 F): Days5142200229
40 C (104 F): Days28819392
90 F (32.2 C): Days5170200249
100 F (37.8 C): Days4716199815
110 F (43.3 C): Days2119461
0 C (32 F): Ice days (max6319922
0 C (32 F): Frost days (min5458198220
-10 C (14 F): Days with min4419722
20 C (68 F): Tropical nights (min311199611
10 mm (0.39 in): Days with 10 mm or more rain4991195045
25 mm (0.98 in): Days with 25 mm or more rain4959199623
50 mm (1.97 in): Days with 50 mm or more rain492419967
100 mm (3.94 in): Days with 100 mm or more rain25319422
200 mm (7.87 in): Days with 200 mm or more rain2119961
10 cm (3.9 in): Days with 10 cm or more snowfall25719501
25 cm (9.8 in): Days with 25 cm or more snowfall4319691

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

  • Data for Illahe 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).