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Built 2026-10-19 (19 October 2026)

Geneseo Threshold Days by Year (USC00143037)

18 fixed thresholds counted per year at Geneseo (USC00143037): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Geneseo Thresholds

  • Geneseo: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 2007 with 34.
  • Geneseo: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1965 with 16.
  • Geneseo: days with 50 mm (1.97 in) or more of precipitation in 54 years, most in 1948 with 4.
  • Geneseo: days with 10 cm (3.9 in) or more of snowfall in 46 years, most in 1958 with 4.
  • 18 fixed thresholds have at least one qualifying day at Geneseo.
19 years with a qualifying day
Days at or above 30 C (86 F) per year at Geneseo Days per year at Geneseo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 1956. 0501001501940: 951941: 881942: 821943: 871944: 791945: 771946: 851947: 1071948: 931949: 791950: 511951: 501952: 1121953: 1021954: 1151955: 921956: 1281957: 681958: 691940194219441946194819501952195419561958
Days per year at Geneseo with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 128 in 1956.
Days at or above 30 C (86 F) per year at Geneseo
YearDaysDecade average
19409587.2
19418887.2
19428287.2
19438787.2
19447987.2
19457787.2
19468587.2
194710787.2
19489387.2
19497987.2
19505187.4
19515087.4
195211287.4
195310287.4
195411587.4
19559287.4
195612887.4
19576887.4
19586987.4
First to last qualifying date each year at Geneseo For each year, a bar from the first to the last day at Geneseo meeting 30 C (86 F). 1940: 31 March 1940 to 24 October 19401941: 14 May 1941 to 13 October 19411942: 4 April 1942 to 2 October 19421943: 29 April 1943 to 21 September 19431944: 15 May 1944 to 23 September 19441945: 19 May 1945 to 23 September 19451946: 31 March 1946 to 26 September 19461947: 3 May 1947 to 21 October 19471948: 15 April 1948 to 22 September 19481949: 22 April 1949 to 7 October 19491950: 22 April 1950 to 30 October 19501951: 28 April 1951 to 11 October 19511952: 8 April 1952 to 26 October 19521953: 21 April 1953 to 11 October 19531954: 6 April 1954 to 9 October 19541955: 15 April 1955 to 11 October 19551956: 1 April 1956 to 11 October 19561957: 5 June 1957 to 5 October 19571958: 21 May 1958 to 16 October 19581940194319461949195219551958JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Geneseo meeting 30 C (86 F).
First to last qualifying date each year at Geneseo
YearFirst dateLast date
19401940-03-311940-10-24
19411941-05-141941-10-13
19421942-04-041942-10-02
19431943-04-291943-09-21
19441944-05-151944-09-23
19451945-05-191945-09-23
19461946-03-311946-09-26
19471947-05-031947-10-21
19481948-04-151948-09-22
19491949-04-221949-10-07
19501950-04-221950-10-30
19511951-04-281951-10-11
19521952-04-081952-10-26
19531953-04-211953-10-11
19541954-04-061954-10-09
19551955-04-151955-10-11
19561956-04-011956-10-11
19571957-06-051957-10-05
19581958-05-211958-10-16

Every Fixed Threshold

Fixed thresholds at Geneseo
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days19128195669
35 C (95 F): Days1973195419
40 C (104 F): Days132419543
90 F (32.2 C): Days1998195450
100 F (37.8 C): Days184219541
110 F (43.3 C): Days2319543
0 C (32 F): Ice days (max1941194033
0 C (32 F): Frost days (min191341950126
-10 C (14 F): Days with min1939194025
-20 C (-4 F): Days with min12819401
20 C (68 F): Tropical nights (min1971195430
25 C (77 F): Days with min10519541
10 mm (0.39 in): Days with 10 mm or more rain6934200713
25 mm (0.98 in): Days with 25 mm or more rain691619652
50 mm (1.97 in): Days with 50 mm or more rain54419481
100 mm (3.94 in): Days with 100 mm or more rain7119411
10 cm (3.9 in): Days with 10 cm or more snowfall46419581
25 cm (9.8 in): Days with 25 cm or more snowfall3119521

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.

Download the Data

  • Data for Geneseo 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 (2026-10-12).