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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Hillside Threshold Days by Year

4 fixed thresholds counted per year at Hillside (ASN00041268): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hillside Thresholds

  • Hillside: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1973 with 28.
  • Hillside: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1975 with 13.
  • Hillside: days with 50 mm (1.97 in) or more of precipitation in 15 years, most in 1965 with 4.
  • Hillside: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1963 with 1.
  • 4 fixed thresholds have at least one qualifying day at Hillside.
16 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Hillside Days per year at Hillside with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1973. 01020301959: 191960: 231961: 221963: 231964: 231965: 171966: 251967: 231968: 221969: 151970: 201971: 241972: 261973: 281974: 271975: 2819591961196419661968197019721974
Days per year at Hillside with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Hillside
YearDaysDecade average
19591919
19602321.4
19612221.4
19632321.4
19642321.4
19651721.4
19662521.4
19672321.4
19682221.4
19691521.4
19702025.5
19712425.5
19722625.5
19732825.5
19742725.5
19752825.5
First to last qualifying date each year at Hillside For each year, a bar from the first to the last day at Hillside meeting 10 mm (0.39 in). 1959: 23 January 1959 to 21 December 19591960: 6 January 1960 to 13 December 19601961: 5 January 1961 to 20 December 19611963: 4 February 1963 to 31 December 19631964: 15 January 1964 to 14 November 19641965: 11 January 1965 to 15 December 19651966: 5 February 1966 to 31 December 19661967: 5 January 1967 to 29 December 19671968: 6 January 1968 to 15 December 19681969: 2 January 1969 to 26 December 19691970: 1 January 1970 to 19 November 19701971: 11 January 1971 to 28 December 19711972: 1 January 1972 to 29 December 19721973: 10 January 1973 to 26 December 19731974: 13 January 1974 to 30 December 19741975: 5 January 1975 to 23 December 197519591961196419661968197019721974JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hillside meeting 10 mm (0.39 in).
First to last qualifying date each year at Hillside
YearFirst dateLast date
19591959-01-231959-12-21
19601960-01-061960-12-13
19611961-01-051961-12-20
19631963-02-041963-12-31
19641964-01-151964-11-14
19651965-01-111965-12-15
19661966-02-051966-12-31
19671967-01-051967-12-29
19681968-01-061968-12-15
19691969-01-021969-12-26
19701970-01-011970-11-19
19711971-01-111971-12-28
19721972-01-011972-12-29
19731973-01-101973-12-26
19741974-01-131974-12-30
19751975-01-051975-12-23

Every Fixed Threshold

Fixed thresholds at Hillside
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1628197328
25 mm (0.98 in): Days with 25 mm or more rain1613197513
50 mm (1.97 in): Days with 50 mm or more rain15419653
100 mm (3.94 in): Days with 100 mm or more rain2119631

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 Hillside 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).