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

Randolph Threshold Days by Year (USC00257030)

6 fixed thresholds counted per year at Randolph (USC00257030): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Randolph Thresholds

  • Randolph: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1979 with 30.
  • Randolph: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1951 with 11.
  • Randolph: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1972 with 3.
  • Randolph: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 1954 with 5.
  • 6 fixed thresholds have at least one qualifying day at Randolph.
27 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Randolph Days per year at Randolph with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1979. 01020301948: 161949: 171950: 181951: 261952: 161954: 241955: 111956: 151957: 271958: 191962: 261963: 201964: 201966: 171967: 201968: 191969: 211970: 191971: 201972: 201973: 261974: 151975: 201976: 131977: 291978: 161979: 30194819511955195819641968197119741977
Days per year at Randolph with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1979.
Days with 10 mm (0.39 in) or more of precipitation per year at Randolph
YearDaysDecade average
19481616.5
19491716.5
19501819.5
19512619.5
19521619.5
19542419.5
19551119.5
19561519.5
19572719.5
19581919.5
19622620.4
19632020.4
19642020.4
19661720.4
19672020.4
19681920.4
19692120.4
19701920.8
19712020.8
19722020.8
19732620.8
19741520.8
19752020.8
19761320.8
19772920.8
19781620.8
19793020.8
First to last qualifying date each year at Randolph For each year, a bar from the first to the last day at Randolph meeting 10 mm (0.39 in). 1948: 27 February 1948 to 29 October 19481949: 3 January 1949 to 10 September 19491950: 25 January 1950 to 2 November 19501951: 1 March 1951 to 3 October 19511952: 19 January 1952 to 13 September 19521954: 20 February 1954 to 25 October 19541955: 4 February 1955 to 3 December 19551956: 2 April 1956 to 12 December 19561957: 18 March 1957 to 16 November 19571958: 8 March 1958 to 18 November 19581962: 18 February 1962 to 29 September 19621963: 3 March 1963 to 22 September 19631964: 20 March 1964 to 19 September 19641966: 9 February 1966 to 15 October 19661967: 13 April 1967 to 29 October 19671968: 3 April 1968 to 22 December 19681969: 15 February 1969 to 28 December 19691970: 10 March 1970 to 11 December 19701971: 19 February 1971 to 30 December 19711972: 21 April 1972 to 30 December 19721973: 21 January 1973 to 21 November 19731974: 3 April 1974 to 31 October 19741975: 19 January 1975 to 20 November 19751976: 26 January 1976 to 4 October 19761977: 3 March 1977 to 9 November 19771978: 13 February 1978 to 3 December 19781979: 3 March 1979 to 22 November 19791948195219571964196919731977JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Randolph meeting 10 mm (0.39 in).
First to last qualifying date each year at Randolph
YearFirst dateLast date
19481948-02-271948-10-29
19491949-01-031949-09-10
19501950-01-251950-11-02
19511951-03-011951-10-03
19521952-01-191952-09-13
19541954-02-201954-10-25
19551955-02-041955-12-03
19561956-04-021956-12-12
19571957-03-181957-11-16
19581958-03-081958-11-18
19621962-02-181962-09-29
19631963-03-031963-09-22
19641964-03-201964-09-19
19661966-02-091966-10-15
19671967-04-131967-10-29
19681968-04-031968-12-22
19691969-02-151969-12-28
19701970-03-101970-12-11
19711971-02-191971-12-30
19721972-04-211972-12-30
19731973-01-211973-11-21
19741974-04-031974-10-31
19751975-01-191975-11-20
19761976-01-261976-10-04
19771977-03-031977-11-09
19781978-02-131978-12-03
19791979-03-031979-11-22

Every Fixed Threshold

Fixed thresholds at Randolph
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2730197930
25 mm (0.98 in): Days with 25 mm or more rain271119516
50 mm (1.97 in): Days with 50 mm or more rain20319721
100 mm (3.94 in): Days with 100 mm or more rain1119581
10 cm (3.9 in): Days with 10 cm or more snowfall18519544
25 cm (9.8 in): Days with 25 cm or more snowfall2119511

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

  • Data for Randolph 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).