Built 2026-10-19 (19 October 2026)

Cincinnati Fernbank Threshold Days by Year (USC00332766)

16 fixed thresholds counted per year at Cincinnati Fernbank (USC00332766): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cincinnati Fernbank Thresholds

  • Cincinnati Fernbank: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 1926 with 46.
  • Cincinnati Fernbank: days with 25 mm (0.98 in) or more of precipitation in 51 years, most in 1939 with 15.
  • Cincinnati Fernbank: days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1921 with 5.
  • Cincinnati Fernbank: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1953 with 77.
  • 16 fixed thresholds have at least one qualifying day at Cincinnati Fernbank.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Cincinnati Fernbank Days per year at Cincinnati Fernbank with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 1953. 0204060801950: 191951: 611952: 661953: 771954: 761955: 681956: 401957: 531958: 321959: 741960: 371961: 421962: 461963: 481964: 621965: 431967: 391968: 401969: 441970: 451971: 441972: 381973: 4419501953195619591962196519691972
Days per year at Cincinnati Fernbank with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 1953.
Days at or above 30 C (86 F) per year at Cincinnati Fernbank
YearDaysDecade average
19501956.6
19516156.6
19526656.6
19537756.6
19547656.6
19556856.6
19564056.6
19575356.6
19583256.6
19597456.6
19603744.6
19614244.6
19624644.6
19634844.6
19646244.6
19654344.6
19673944.6
19684044.6
19694444.6
19704542.8
19714442.8
19723842.8
19734442.8
First to last qualifying date each year at Cincinnati Fernbank For each year, a bar from the first to the last day at Cincinnati Fernbank meeting 30 C (86 F). 1950: 25 May 1950 to 28 September 19501951: 1 May 1951 to 5 October 19511952: 5 May 1952 to 1 October 19521953: 25 May 1953 to 20 October 19531954: 25 April 1954 to 5 October 19541955: 20 May 1955 to 21 September 19551956: 12 May 1956 to 31 August 19561957: 13 May 1957 to 21 September 19571958: 4 June 1958 to 26 September 19581959: 2 May 1959 to 5 October 19591960: 23 April 1960 to 12 October 19601961: 11 June 1961 to 24 September 19611962: 30 April 1962 to 15 October 19621963: 9 May 1963 to 12 October 19631964: 19 May 1964 to 22 September 19641965: 22 May 1965 to 20 October 19651967: 26 May 1967 to 19 August 19671968: 7 June 1968 to 25 August 19681969: 6 May 1969 to 7 September 19691970: 30 April 1970 to 24 September 19701971: 4 June 1971 to 1 October 19711972: 25 May 1972 to 14 September 19721973: 4 June 1973 to 26 September 197319501953195619591962196519691972JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cincinnati Fernbank meeting 30 C (86 F).
First to last qualifying date each year at Cincinnati Fernbank
YearFirst dateLast date
19501950-05-251950-09-28
19511951-05-011951-10-05
19521952-05-051952-10-01
19531953-05-251953-10-20
19541954-04-251954-10-05
19551955-05-201955-09-21
19561956-05-121956-08-31
19571957-05-131957-09-21
19581958-06-041958-09-26
19591959-05-021959-10-05
19601960-04-231960-10-12
19611961-06-111961-09-24
19621962-04-301962-10-15
19631963-05-091963-10-12
19641964-05-191964-09-22
19651965-05-221965-10-20
19671967-05-261967-08-19
19681968-06-071968-08-25
19691969-05-061969-09-07
19701970-04-301970-09-24
19711971-06-041971-10-01
19721972-05-251972-09-14
19731973-06-041973-09-26

Every Fixed Threshold

Fixed thresholds at Cincinnati Fernbank
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2377195344
35 C (95 F): Days151419532
40 C (104 F): Days1119541
90 F (32.2 C): Days2344195413
100 F (37.8 C): Days5319541
0 C (32 F): Ice days (max2340196822
0 C (32 F): Frost days (min22129196991
-10 C (14 F): Days with min2243196315
-20 C (-4 F): Days with min8819631
20 C (68 F): Tropical nights (min2253195930
25 C (77 F): Days with min6219521
10 mm (0.39 in): Days with 10 mm or more rain5146192646
25 mm (0.98 in): Days with 25 mm or more rain5115193911
50 mm (1.97 in): Days with 50 mm or more rain42519211
100 mm (3.94 in): Days with 100 mm or more rain2119381
10 cm (3.9 in): Days with 10 cm or more snowfall15419512

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Cincinnati Fernbank 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).