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

Mount James Threshold Days by Year (ASN00007056)

4 fixed thresholds counted per year at Mount James (ASN00007056): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount James Thresholds

  • Mount James: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1963 with 14.
  • Mount James: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1965 with 8.
  • Mount James: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1961 with 4.
  • Mount James: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1961 with 2.
  • 4 fixed thresholds have at least one qualifying day at Mount James.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mount James Days per year at Mount James with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 14 in 1963. 0510151937: 41939: 41940: 31941: 51942: 101943: 41945: 51946: 71947: 81948: 81949: 101954: 61956: 11957: 91958: 101959: 31960: 101961: 81962: 81963: 141964: 51965: 101966: 41967: 51968: 91969: 41970: 61971: 61972: 51973: 91974: 1419371942194719561960196419681972
Days per year at Mount James with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 14 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Mount James
YearDaysDecade average
193744
193944
194036.7
194156.7
1942106.7
194346.7
194556.7
194676.7
194786.7
194886.7
1949106.7
195465.8
195615.8
195795.8
1958105.8
195935.8
1960107.7
196187.7
196287.7
1963147.7
196457.7
1965107.7
196647.7
196757.7
196897.7
196947.7
197068
197168
197258
197398
1974148
First to last qualifying date each year at Mount James For each year, a bar from the first to the last day at Mount James meeting 10 mm (0.39 in). 1937: 5 January 1937 to 10 November 19371939: 11 January 1939 to 9 November 19391940: 8 January 1940 to 27 July 19401941: 18 May 1941 to 13 November 19411942: 22 January 1942 to 17 May 19421943: 11 February 1943 to 12 November 19431945: 2 January 1945 to 31 July 19451946: 31 January 1946 to 7 June 19461947: 26 February 1947 to 25 October 19471948: 9 February 1948 to 31 July 19481949: 3 February 1949 to 7 November 19491954: 1 February 1954 to 20 November 19541956: 20 July 1956 to 20 July 19561957: 27 January 1957 to 9 June 19571958: 21 January 1958 to 17 December 19581959: 17 April 1959 to 25 July 19591960: 31 January 1960 to 22 July 19601961: 26 January 1961 to 30 August 19611962: 9 January 1962 to 11 July 19621963: 10 January 1963 to 2 December 19631964: 9 April 1964 to 8 November 19641965: 12 January 1965 to 9 August 19651966: 10 February 1966 to 17 June 19661967: 16 January 1967 to 21 May 19671968: 27 January 1968 to 25 June 19681969: 20 February 1969 to 14 June 19691970: 30 April 1970 to 11 September 19701971: 26 January 1971 to 26 July 19711972: 14 February 1972 to 3 July 19721973: 17 March 1973 to 6 August 19731974: 3 February 1974 to 23 December 197419371942194719561960196419681972JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount James meeting 10 mm (0.39 in).
First to last qualifying date each year at Mount James
YearFirst dateLast date
19371937-01-051937-11-10
19391939-01-111939-11-09
19401940-01-081940-07-27
19411941-05-181941-11-13
19421942-01-221942-05-17
19431943-02-111943-11-12
19451945-01-021945-07-31
19461946-01-311946-06-07
19471947-02-261947-10-25
19481948-02-091948-07-31
19491949-02-031949-11-07
19541954-02-011954-11-20
19561956-07-201956-07-20
19571957-01-271957-06-09
19581958-01-211958-12-17
19591959-04-171959-07-25
19601960-01-311960-07-22
19611961-01-261961-08-30
19621962-01-091962-07-11
19631963-01-101963-12-02
19641964-04-091964-11-08
19651965-01-121965-08-09
19661966-02-101966-06-17
19671967-01-161967-05-21
19681968-01-271968-06-25
19691969-02-201969-06-14
19701970-04-301970-09-11
19711971-01-261971-07-26
19721972-02-141972-07-03
19731973-03-171973-08-06
19741974-02-031974-12-23

Every Fixed Threshold

Fixed thresholds at Mount James
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3114196314
25 mm (0.98 in): Days with 25 mm or more rain24819656
50 mm (1.97 in): Days with 50 mm or more rain14419612
100 mm (3.94 in): Days with 100 mm or more rain2219612

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

  • Data for Mount James 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).