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

Monte Sano Threshold Days by Year (USC00015529)

4 fixed thresholds counted per year at Monte Sano (USC00015529): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Monte Sano Thresholds

  • Monte Sano: days with 10 mm (0.39 in) or more of precipitation in 21 years, most in 1949 with 57.
  • Monte Sano: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1946 with 29.
  • Monte Sano: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1946 with 9.
  • Monte Sano: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1942 with 1.
  • 4 fixed thresholds have at least one qualifying day at Monte Sano.
21 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Monte Sano Days per year at Monte Sano with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 1949. 02040601940: 451941: 391942: 381943: 441944: 451945: 481946: 551947: 451949: 571950: 571951: 521952: 431953: 451954: 311955: 451956: 451957: 541958: 441959: 421960: 421961: 521940194319461950195319561959
Days per year at Monte Sano with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 1949.
Days with 10 mm (0.39 in) or more of precipitation per year at Monte Sano
YearDaysDecade average
19404546.2
19413946.2
19423846.2
19434446.2
19444546.2
19454846.2
19465546.2
19474546.2
19495746.2
19505745.8
19515245.8
19524345.8
19534545.8
19543145.8
19554545.8
19564545.8
19575445.8
19584445.8
19594245.8
19604247
19615247
First to last qualifying date each year at Monte Sano For each year, a bar from the first to the last day at Monte Sano meeting 10 mm (0.39 in). 1940: 12 January 1940 to 28 December 19401941: 2 January 1941 to 24 December 19411942: 1 January 1942 to 28 December 19421943: 18 January 1943 to 26 December 19431944: 3 January 1944 to 29 December 19441945: 1 January 1945 to 31 December 19451946: 6 January 1946 to 29 December 19461947: 2 January 1947 to 16 December 19471949: 3 January 1949 to 23 December 19491950: 3 January 1950 to 7 December 19501951: 13 January 1951 to 26 December 19511952: 5 January 1952 to 31 December 19521953: 2 January 1953 to 29 December 19531954: 11 January 1954 to 29 December 19541955: 19 January 1955 to 18 December 19551956: 19 January 1956 to 23 December 19561957: 4 January 1957 to 20 December 19571958: 1 January 1958 to 28 December 19581959: 8 January 1959 to 28 December 19591960: 3 January 1960 to 30 December 19601961: 1 January 1961 to 27 December 19611940194319461950195319561959JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Monte Sano meeting 10 mm (0.39 in).
First to last qualifying date each year at Monte Sano
YearFirst dateLast date
19401940-01-121940-12-28
19411941-01-021941-12-24
19421942-01-011942-12-28
19431943-01-181943-12-26
19441944-01-031944-12-29
19451945-01-011945-12-31
19461946-01-061946-12-29
19471947-01-021947-12-16
19491949-01-031949-12-23
19501950-01-031950-12-07
19511951-01-131951-12-26
19521952-01-051952-12-31
19531953-01-021953-12-29
19541954-01-111954-12-29
19551955-01-191955-12-18
19561956-01-191956-12-23
19571957-01-041957-12-20
19581958-01-011958-12-28
19591959-01-081959-12-28
19601960-01-031960-12-30
19611961-01-011961-12-27

Every Fixed Threshold

Fixed thresholds at Monte Sano
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2157194952
25 mm (0.98 in): Days with 25 mm or more rain2129194626
50 mm (1.97 in): Days with 50 mm or more rain20919467
100 mm (3.94 in): Days with 100 mm or more rain6119421

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 Monte Sano 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).