Built 2026-10-19 (19 October 2026)

Hilliard Threshold Days by Year (USC00083978)

13 fixed thresholds counted per year at Hilliard (USC00083978): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hilliard Thresholds

  • Hilliard: nights with a minimum temperature at or below 0 C (32 F) in 32 years, most in 1954 with 38.
  • Hilliard: nights with a minimum temperature at or above 20 C (68 F) in 32 years, most in 1919 with 133.
  • Hilliard: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1925 with 157.
  • Hilliard: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 1954 with 56.
  • 13 fixed thresholds have at least one qualifying day at Hilliard.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Hilliard Days per year at Hilliard with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 157 in 1925. 0501001502001909: 1361910: 1411911: 1561912: 1331913: 1291914: 1371916: 1421917: 1441918: 1321919: 1491920: 1171921: 1421922: 1261924: 1261925: 1571926: 1351927: 1461929: 1501932: 1391942: 1361946: 1341947: 1491948: 1241949: 1321950: 1341951: 1361952: 1261953: 1271954: 1461955: 1421909191219161919192219261932194719501953
Days per year at Hilliard with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 157 in 1925.
Days at or above 30 C (86 F) per year at Hilliard
YearDaysDecade average
1909136136
1910141140.3
1911156140.3
1912133140.3
1913129140.3
1914137140.3
1916142140.3
1917144140.3
1918132140.3
1919149140.3
1920117137.4
1921142137.4
1922126137.4
1924126137.4
1925157137.4
1926135137.4
1927146137.4
1929150137.4
1932139139
1942136135
1946134135
1947149135
1948124135
1949132135
1950134135.2
1951136135.2
1952126135.2
1953127135.2
1954146135.2
1955142135.2
First to last qualifying date each year at Hilliard For each year, a bar from the first to the last day at Hilliard meeting 30 C (86 F). 1909: 9 March 1909 to 26 October 19091910: 8 March 1910 to 23 October 19101911: 12 March 1911 to 10 November 19111912: 25 February 1912 to 14 October 19121913: 19 April 1913 to 13 October 19131914: 27 April 1914 to 14 October 19141916: 25 March 1916 to 11 November 19161917: 28 February 1917 to 30 October 19171918: 16 February 1918 to 30 October 19181919: 6 March 1919 to 11 November 19191920: 30 March 1920 to 9 November 19201921: 8 March 1921 to 19 November 19211922: 9 April 1922 to 13 December 19221924: 29 March 1924 to 5 October 19241925: 10 March 1925 to 25 October 19251926: 23 April 1926 to 24 October 19261927: 18 March 1927 to 12 December 19271929: 28 February 1929 to 16 November 19291932: 12 February 1932 to 24 October 19321942: 15 March 1942 to 10 November 19421946: 7 March 1946 to 11 November 19461947: 3 April 1947 to 28 October 19471948: 20 March 1948 to 5 November 19481949: 24 March 1949 to 30 October 19491950: 27 March 1950 to 3 November 19501951: 30 April 1951 to 7 October 19511952: 21 March 1952 to 16 October 19521953: 31 March 1953 to 30 September 19531954: 13 March 1954 to 13 October 19541955: 12 March 1955 to 8 October 195519091913191819221927194619501954JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hilliard meeting 30 C (86 F).
First to last qualifying date each year at Hilliard
YearFirst dateLast date
19091909-03-091909-10-26
19101910-03-081910-10-23
19111911-03-121911-11-10
19121912-02-251912-10-14
19131913-04-191913-10-13
19141914-04-271914-10-14
19161916-03-251916-11-11
19171917-02-281917-10-30
19181918-02-161918-10-30
19191919-03-061919-11-11
19201920-03-301920-11-09
19211921-03-081921-11-19
19221922-04-091922-12-13
19241924-03-291924-10-05
19251925-03-101925-10-25
19261926-04-231926-10-24
19271927-03-181927-12-12
19291929-02-281929-11-16
19321932-02-121932-10-24
19421942-03-151942-11-10
19461946-03-071946-11-11
19471947-04-031947-10-28
19481948-03-201948-11-05
19491949-03-241949-10-30
19501950-03-271950-11-03
19511951-04-301951-10-07
19521952-03-211952-10-16
19531953-03-311953-09-30
19541954-03-131954-10-13
19551955-03-121955-10-08

Every Fixed Threshold

Fixed thresholds at Hilliard
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days301571925142
35 C (95 F): Days3056195415
40 C (104 F): Days3119141
90 F (32.2 C): Days30111191183
100 F (37.8 C): Days1316195416
0 C (32 F): Frost days (min3238195434
20 C (68 F): Tropical nights (min32133191974
25 C (77 F): Days with min14619251
10 mm (0.39 in): Days with 10 mm or more rain3056194747
25 mm (0.98 in): Days with 25 mm or more rain3026194712
50 mm (1.97 in): Days with 50 mm or more rain29919474
100 mm (3.94 in): Days with 100 mm or more rain12219111
200 mm (7.87 in): Days with 200 mm or more rain1119111

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1909.

Download the Data

  • Data for Hilliard 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).