Built 2026-10-19 (19 October 2026)

Bloomington Normal Threshold Days by Year (USC00110766)

20 fixed thresholds counted per year at Bloomington Normal (USC00110766): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bloomington Normal Thresholds

  • Bloomington Normal: days with a maximum temperature at or above 30 C (86 F) in 82 years, most in 1901 with 100.
  • Bloomington Normal: days with a maximum temperature at or above 90 F (32.2 C) in 82 years, most in 1895 with 75.
  • Bloomington Normal: days with a maximum temperature at or below 0 C (32 F) in 82 years, most in 1963 with 65.
  • Bloomington Normal: nights with a minimum temperature at or below 0 C (32 F) in 82 years, most in 1895 with 148.
  • 20 fixed thresholds have at least one qualifying day at Bloomington Normal.
82 years with a qualifying day
Days at or above 30 C (86 F) per year at Bloomington Normal Days per year at Bloomington Normal with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 1901. 02550751001895: 971896: 711897: 821898: 771899: 841900: 681901: 1001902: 591903: 601904: 661905: 851906: 961907: 531908: 801909: 631910: 541911: 831912: 561913: 851914: 841915: 411916: 731917: 461918: 591919: 801920: 651921: 771922: 721923: 511924: 311925: 791926: 571927: 391928: 551929: 461930: 761931: 771932: 621933: 831934: 811935: 651936: 951937: 681938: 751939: 741940: 681941: 761942: 561943: 711944: 821945: 491946: 591947: 651948: 641949: 681950: 321951: 511952: 771953: 891954: 871955: 821956: 701957: 561958: 411959: 901960: 391961: 511962: 571963: 631964: 691965: 431966: 571967: 321968: 521969: 521970: 541971: 631972: 611973: 491974: 441975: 541976: 481895190419131922193119401949195819671976
Days per year at Bloomington Normal with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 1901.
Days at or above 30 C (86 F) per year at Bloomington Normal
YearDaysDecade average
18959782.2
18967182.2
18978282.2
18987782.2
18998482.2
19006873
190110073
19025973
19036073
19046673
19058573
19069673
19075373
19088073
19096373
19105466.1
19118366.1
19125666.1
19138566.1
19148466.1
19154166.1
19167366.1
19174666.1
19185966.1
19198066.1
19206557.2
19217757.2
19227257.2
19235157.2
19243157.2
19257957.2
19265757.2
19273957.2
19285557.2
19294657.2
19307675.6
19317775.6
19326275.6
19338375.6
19348175.6
19356575.6
19369575.6
19376875.6
19387575.6
19397475.6
19406865.8
19417665.8
19425665.8
19437165.8
19448265.8
19454965.8
19465965.8
19476565.8
19486465.8
19496865.8
19503267.5
19515167.5
19527767.5
19538967.5
19548767.5
19558267.5
19567067.5
19575667.5
19584167.5
19599067.5
19603951.5
19615151.5
19625751.5
19636351.5
19646951.5
19654351.5
19665751.5
19673251.5
19685251.5
19695251.5
19705453.3
19716353.3
19726153.3
19734953.3
19744453.3
19755453.3
19764853.3
First to last qualifying date each year at Bloomington Normal For each year, a bar from the first to the last day at Bloomington Normal meeting 30 C (86 F). 1895: 25 April 1895 to 25 September 18951896: 18 April 1896 to 14 September 18961897: 6 May 1897 to 15 October 18971898: 17 April 1898 to 3 October 18981899: 28 April 1899 to 15 October 18991900: 29 April 1900 to 5 October 19001901: 28 April 1901 to 1 October 19011902: 21 April 1902 to 7 September 19021903: 9 May 1903 to 3 October 19031904: 23 April 1904 to 28 September 19041905: 9 April 1905 to 13 October 19051906: 13 May 1906 to 25 September 19061907: 21 March 1907 to 2 October 19071908: 16 May 1908 to 26 September 19081909: 5 May 1909 to 20 September 19091910: 23 March 1910 to 18 September 19101911: 9 May 1911 to 23 September 19111912: 3 May 1912 to 6 October 19121913: 14 May 1913 to 11 September 19131914: 10 May 1914 to 7 October 19141915: 20 April 1915 to 18 September 19151916: 7 May 1916 to 8 October 19161917: 17 May 1917 to 15 September 19171918: 19 May 1918 to 28 August 19181919: 28 May 1919 to 2 October 19191920: 26 May 1920 to 26 September 19201921: 18 May 1921 to 22 September 19211922: 10 May 1922 to 5 October 19221923: 2 June 1923 to 19 August 19231924: 16 April 1924 to 21 September 19241925: 22 April 1925 to 19 September 19251926: 1 May 1926 to 3 October 19261927: 19 June 1927 to 27 October 19271928: 2 May 1928 to 11 October 19281929: 29 May 1929 to 28 September 19291930: 10 April 1930 to 13 October 19301931: 16 May 1931 to 6 October 19311932: 14 May 1932 to 19 September 19321933: 20 May 1933 to 30 September 19331934: 6 May 1934 to 25 September 19341935: 26 April 1935 to 30 September 19351936: 20 April 1936 to 22 September 19361937: 29 May 1937 to 5 October 19371938: 2 May 1938 to 18 October 19381939: 17 May 1939 to 8 October 19391940: 13 May 1940 to 5 October 19401941: 13 April 1941 to 24 September 19411942: 29 April 1942 to 19 September 19421943: 5 May 1943 to 5 September 19431944: 15 May 1944 to 20 September 19441945: 23 June 1945 to 23 September 19451946: 7 June 1946 to 7 October 19461947: 9 June 1947 to 15 October 19471948: 28 May 1948 to 21 September 19481949: 3 May 1949 to 9 October 19491950: 23 May 1950 to 30 October 19501951: 1 May 1951 to 5 October 19511952: 29 April 1952 to 1 October 19521953: 25 May 1953 to 20 October 19531954: 25 April 1954 to 4 October 19541955: 3 May 1955 to 21 September 19551956: 11 May 1956 to 16 October 19561957: 5 June 1957 to 3 September 19571958: 11 May 1958 to 24 September 19581959: 2 May 1959 to 23 September 19591960: 4 June 1960 to 9 September 19601961: 31 May 1961 to 23 September 19611962: 14 May 1962 to 11 October 19621963: 8 May 1963 to 16 October 19631964: 16 May 1964 to 20 September 19641965: 22 May 1965 to 19 September 19651966: 23 May 1966 to 3 September 19661967: 25 May 1967 to 4 October 19671968: 2 May 1968 to 22 September 19681969: 27 May 1969 to 1 September 19691970: 29 April 1970 to 22 September 19701971: 3 June 1971 to 2 October 19711972: 19 May 1972 to 21 September 19721973: 8 June 1973 to 3 September 19731974: 21 May 1974 to 27 August 19741975: 18 May 1975 to 13 October 19751976: 7 June 1976 to 3 October 197618951906191719281939195019611972JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bloomington Normal meeting 30 C (86 F).
First to last qualifying date each year at Bloomington Normal
YearFirst dateLast date
18951895-04-251895-09-25
18961896-04-181896-09-14
18971897-05-061897-10-15
18981898-04-171898-10-03
18991899-04-281899-10-15
19001900-04-291900-10-05
19011901-04-281901-10-01
19021902-04-211902-09-07
19031903-05-091903-10-03
19041904-04-231904-09-28
19051905-04-091905-10-13
19061906-05-131906-09-25
19071907-03-211907-10-02
19081908-05-161908-09-26
19091909-05-051909-09-20
19101910-03-231910-09-18
19111911-05-091911-09-23
19121912-05-031912-10-06
19131913-05-141913-09-11
19141914-05-101914-10-07
19151915-04-201915-09-18
19161916-05-071916-10-08
19171917-05-171917-09-15
19181918-05-191918-08-28
19191919-05-281919-10-02
19201920-05-261920-09-26
19211921-05-181921-09-22
19221922-05-101922-10-05
19231923-06-021923-08-19
19241924-04-161924-09-21
19251925-04-221925-09-19
19261926-05-011926-10-03
19271927-06-191927-10-27
19281928-05-021928-10-11
19291929-05-291929-09-28
19301930-04-101930-10-13
19311931-05-161931-10-06
19321932-05-141932-09-19
19331933-05-201933-09-30
19341934-05-061934-09-25
19351935-04-261935-09-30
19361936-04-201936-09-22
19371937-05-291937-10-05
19381938-05-021938-10-18
19391939-05-171939-10-08
19401940-05-131940-10-05
19411941-04-131941-09-24
19421942-04-291942-09-19
19431943-05-051943-09-05
19441944-05-151944-09-20
19451945-06-231945-09-23
19461946-06-071946-10-07
19471947-06-091947-10-15
19481948-05-281948-09-21
19491949-05-031949-10-09
19501950-05-231950-10-30
19511951-05-011951-10-05
19521952-04-291952-10-01
19531953-05-251953-10-20
19541954-04-251954-10-04
19551955-05-031955-09-21
19561956-05-111956-10-16
19571957-06-051957-09-03
19581958-05-111958-09-24
19591959-05-021959-09-23
19601960-06-041960-09-09
19611961-05-311961-09-23
19621962-05-141962-10-11
19631963-05-081963-10-16
19641964-05-161964-09-20
19651965-05-221965-09-19
19661966-05-231966-09-03
19671967-05-251967-10-04
19681968-05-021968-09-22
19691969-05-271969-09-01
19701970-04-291970-09-22
19711971-06-031971-10-02
19721972-05-191972-09-21
19731973-06-081973-09-03
19741974-05-211974-08-27
19751975-05-181975-10-13
19761976-06-071976-10-03

Every Fixed Threshold

Fixed thresholds at Bloomington Normal
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days82100190148
35 C (95 F): Days734419363
40 C (104 F): Days111519361
45 C (113 F): Days1119361
90 F (32.2 C): Days8275189519
100 F (37.8 C): Days292219363
110 F (43.3 C): Days1319363
0 C (32 F): Ice days (max8265196336
0 C (32 F): Frost days (min821481895134
-10 C (14 F): Days with min8256189542
-20 C (-4 F): Days with min692019364
-30 C (-22 F): Days with min4118951
20 C (68 F): Tropical nights (min8251195919
25 C (77 F): Days with min21318972
10 mm (0.39 in): Days with 10 mm or more rain8247189825
25 mm (0.98 in): Days with 25 mm or more rain8219196511
50 mm (1.97 in): Days with 50 mm or more rain63719212
100 mm (3.94 in): Days with 100 mm or more rain4119211
10 cm (3.9 in): Days with 10 cm or more snowfall56519601
25 cm (9.8 in): Days with 25 cm or more snowfall4119151

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

Download the Data

  • Data for Bloomington Normal 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).