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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Monticello Threshold Days by Year (CA006145267)

12 fixed thresholds counted per year at Monticello (CA006145267): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Monticello Thresholds

  • Monticello: days with a maximum temperature at or below 0 C (32 F) in 26 years, most in 1960 with 115.
  • Monticello: nights with a minimum temperature at or below 0 C (32 F) in 26 years, most in 1972 with 188.
  • Monticello: nights with a minimum temperature at or below -10 C (14 F) in 26 years, most in 1970 with 88.
  • Monticello: nights with a minimum temperature at or below -20 C (-4 F) in 26 years, most in 1963 with 35.
  • 12 fixed thresholds have at least one qualifying day at Monticello.
13 years with a qualifying day
Days at or above 30 C (86 F) per year at Monticello Days per year at Monticello with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1959. 011221959: 21960: 21962: 21963: 21964: 21966: 11968: 11971: 21973: 21974: 11975: 11977: 21978: 11959196219641968197319751978
Days per year at Monticello with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 2 in 1959.
Days at or above 30 C (86 F) per year at Monticello
YearDaysDecade average
195922
196021.7
196221.7
196321.7
196421.7
196611.7
196811.7
197121.5
197321.5
197411.5
197511.5
197721.5
197811.5
First to last qualifying date each year at Monticello For each year, a bar from the first to the last day at Monticello meeting 30 C (86 F). 1959: 14 August 1959 to 9 September 19591960: 7 September 1960 to 8 September 19601962: 7 July 1962 to 8 July 19621963: 30 June 1963 to 1 July 19631964: 26 June 1964 to 30 June 19641966: 3 July 1966 to 3 July 19661968: 24 August 1968 to 24 August 19681971: 28 June 1971 to 29 June 19711973: 28 August 1973 to 3 September 19731974: 14 July 1974 to 14 July 19741975: 31 July 1975 to 31 July 19751977: 15 July 1977 to 20 July 19771978: 14 August 1978 to 14 August 19781959196219641968197319751978JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Monticello meeting 30 C (86 F).
First to last qualifying date each year at Monticello
YearFirst dateLast date
19591959-08-141959-09-09
19601960-09-071960-09-08
19621962-07-071962-07-08
19631963-06-301963-07-01
19641964-06-261964-06-30
19661966-07-031966-07-03
19681968-08-241968-08-24
19711971-06-281971-06-29
19731973-08-281973-09-03
19741974-07-141974-07-14
19751975-07-311975-07-31
19771977-07-151977-07-20
19781978-08-141978-08-14

Every Fixed Threshold

Fixed thresholds at Monticello
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days13219591
0 C (32 F): Ice days (max26115196082
0 C (32 F): Frost days (min261881972179
-10 C (14 F): Days with min2688197049
-20 C (-4 F): Days with min2635196312
-30 C (-22 F): Days with min11519791
20 C (68 F): Tropical nights (min25919738
10 mm (0.39 in): Days with 10 mm or more rain2539196730
25 mm (0.98 in): Days with 25 mm or more rain231019678
50 mm (1.97 in): Days with 50 mm or more rain5219812
10 cm (3.9 in): Days with 10 cm or more snowfall241119754
25 cm (9.8 in): Days with 25 cm or more snowfall6219681

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

  • Data for Monticello 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 (2026-10-17).