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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Monticello Threshold Days by Year (USC00125837)

16 fixed thresholds counted per year at Monticello (USC00125837): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Monticello Thresholds

  • Monticello: days with 10 mm (0.39 in) or more of precipitation in 86 years, most in 1993 with 51.
  • Monticello: days with 25 mm (0.98 in) or more of precipitation in 86 years, most in 1975 with 14.
  • Monticello: days with 50 mm (1.97 in) or more of precipitation in 66 years, most in 1915 with 4.
  • Monticello: days with 10 cm (3.9 in) or more of snowfall in 9 years, most in 1951 with 2.
  • 16 fixed thresholds have at least one qualifying day at Monticello.
3 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 57 in 1930. 02040601928: 451929: 471930: 57192819291930
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 57 in 1930.
Days at or above 30 C (86 F) per year at Monticello
YearDaysDecade average
19284546
19294746
19305757
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). 1928: 3 May 1928 to 12 October 19281929: 29 May 1929 to 27 September 19291930: 10 April 1930 to 24 September 1930192819291930JanFebMarAprMayJunJulAugSepOctNovDec
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
19281928-05-031928-10-12
19291929-05-291929-09-27
19301930-04-101930-09-24

Every Fixed Threshold

Fixed thresholds at Monticello
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days357193057
35 C (95 F): Days315193015
40 C (104 F): Days1219302
90 F (32.2 C): Days336193036
100 F (37.8 C): Days1619306
0 C (32 F): Ice days (max353192943
0 C (32 F): Frost days (min51471928130
-10 C (14 F): Days with min557192928
-20 C (-4 F): Days with min51719297
-30 C (-22 F): Days with min10n/a2
20 C (68 F): Tropical nights (min522193022
10 mm (0.39 in): Days with 10 mm or more rain8651199330
25 mm (0.98 in): Days with 25 mm or more rain8614197510
50 mm (1.97 in): Days with 50 mm or more rain66419152
100 mm (3.94 in): Days with 100 mm or more rain4119361
10 cm (3.9 in): Days with 10 cm or more snowfall9219512

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

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 (2025-12-31).