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

Glen Roy Threshold Days by Year (SF000997350)

3 fixed thresholds counted per year at Glen Roy (SF000997350): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glen Roy Thresholds

  • Glen Roy: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1976 with 38.
  • Glen Roy: days with 25 mm (0.98 in) or more of precipitation in 66 years, most in 1943 with 10.
  • Glen Roy: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1974 with 4.
  • 3 fixed thresholds have at least one qualifying day at Glen Roy.
71 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Glen Roy Days per year at Glen Roy with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1976. 0102030401924: 81925: 251927: 121929: 191930: 161931: 221932: 171933: 171934: 191935: 211936: 241937: 111938: 121939: 151941: 171942: 191943: 241944: 191945: 161946: 141947: 191948: 131949: 61950: 241951: 111952: 141953: 221954: 161955: 161956: 231957: 171958: 141959: 201960: 141961: 171962: 141963: 361964: 181965: 91966: 51967: 261968: 141969: 91970: 191971: 191972: 141973: 181974: 351975: 191976: 381977: 241978: 191979: 191980: 111981: 271982: 241983: 211984: 141985: 341986: 161987: 201988: 251989: 181990: 81991: 211992: 81993: 211994: 191995: 121996: 171997: 20192419341943195119591967197519831991
Days per year at Glen Roy with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1976.
Days with 10 mm (0.39 in) or more of precipitation per year at Glen Roy
YearDaysDecade average
1924816
19252516
19271216
19291916
19301617.4
19312217.4
19321717.4
19331717.4
19341917.4
19352117.4
19362417.4
19371117.4
19381217.4
19391517.4
19411716.3
19421916.3
19432416.3
19441916.3
19451616.3
19461416.3
19471916.3
19481316.3
1949616.3
19502417.7
19511117.7
19521417.7
19532217.7
19541617.7
19551617.7
19562317.7
19571717.7
19581417.7
19592017.7
19601416.2
19611716.2
19621416.2
19633616.2
19641816.2
1965916.2
1966516.2
19672616.2
19681416.2
1969916.2
19701922.4
19711922.4
19721422.4
19731822.4
19743522.4
19751922.4
19763822.4
19772422.4
19781922.4
19791922.4
19801121
19812721
19822421
19832121
19841421
19853421
19861621
19872021
19882521
19891821
1990815.8
19912115.8
1992815.8
19932115.8
19941915.8
19951215.8
19961715.8
19972015.8
First to last qualifying date each year at Glen Roy For each year, a bar from the first to the last day at Glen Roy meeting 10 mm (0.39 in). 1924: 21 February 1924 to 15 December 19241925: 12 February 1925 to 23 November 19251927: 1 February 1927 to 29 December 19271929: 5 March 1929 to 29 December 19291930: 13 February 1930 to 28 December 19301931: 3 January 1931 to 31 December 19311932: 1 January 1932 to 25 December 19321933: 2 January 1933 to 31 December 19331934: 8 January 1934 to 24 December 19341935: 29 January 1935 to 18 December 19351936: 1 January 1936 to 10 December 19361937: 5 February 1937 to 17 December 19371938: 21 January 1938 to 31 December 19381939: 31 January 1939 to 2 December 19391941: 18 January 1941 to 21 December 19411942: 25 January 1942 to 21 December 19421943: 20 January 1943 to 31 December 19431944: 14 January 1944 to 22 October 19441945: 6 January 1945 to 10 November 19451946: 26 January 1946 to 25 November 19461947: 14 January 1947 to 23 December 19471948: 3 February 1948 to 17 November 19481949: 2 April 1949 to 18 December 19491950: 5 January 1950 to 29 December 19501951: 1 January 1951 to 3 October 19511952: 29 January 1952 to 14 December 19521953: 7 February 1953 to 19 December 19531954: 19 January 1954 to 8 December 19541955: 21 January 1955 to 18 December 19551956: 17 January 1956 to 17 December 19561957: 7 January 1957 to 29 December 19571958: 17 January 1958 to 20 December 19581959: 24 January 1959 to 21 December 19591960: 21 January 1960 to 28 December 19601961: 26 January 1961 to 15 December 19611962: 19 January 1962 to 20 November 19621963: 4 January 1963 to 8 December 19631964: 28 January 1964 to 26 December 19641965: 22 January 1965 to 3 November 19651966: 2 February 1966 to 10 December 19661967: 12 January 1967 to 23 November 19671968: 3 March 1968 to 7 December 19681969: 24 February 1969 to 7 November 19691970: 6 February 1970 to 24 December 19701971: 6 January 1971 to 28 October 19711972: 6 January 1972 to 13 October 19721973: 16 February 1973 to 24 December 19731974: 9 January 1974 to 18 December 19741975: 22 January 1975 to 23 December 19751976: 4 January 1976 to 31 December 19761977: 8 January 1977 to 30 December 19771978: 4 January 1978 to 15 December 19781979: 26 January 1979 to 25 November 19791980: 21 January 1980 to 24 November 19801981: 25 January 1981 to 23 December 19811982: 28 January 1982 to 5 December 19821983: 30 January 1983 to 31 December 19831984: 5 March 1984 to 24 December 19841985: 13 January 1985 to 24 December 19851986: 18 January 1986 to 25 November 19861987: 11 January 1987 to 22 December 19871988: 14 January 1988 to 28 December 19881989: 11 February 1989 to 13 December 19891990: 9 January 1990 to 16 December 19901991: 5 January 1991 to 31 December 19911992: 11 February 1992 to 1 November 19921993: 29 January 1993 to 24 December 19931994: 7 January 1994 to 26 December 19941995: 14 January 1995 to 17 December 19951996: 6 January 1996 to 29 December 19961997: 8 January 1997 to 16 November 199719241935194519541963197219811990JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Glen Roy meeting 10 mm (0.39 in).
First to last qualifying date each year at Glen Roy
YearFirst dateLast date
19241924-02-211924-12-15
19251925-02-121925-11-23
19271927-02-011927-12-29
19291929-03-051929-12-29
19301930-02-131930-12-28
19311931-01-031931-12-31
19321932-01-011932-12-25
19331933-01-021933-12-31
19341934-01-081934-12-24
19351935-01-291935-12-18
19361936-01-011936-12-10
19371937-02-051937-12-17
19381938-01-211938-12-31
19391939-01-311939-12-02
19411941-01-181941-12-21
19421942-01-251942-12-21
19431943-01-201943-12-31
19441944-01-141944-10-22
19451945-01-061945-11-10
19461946-01-261946-11-25
19471947-01-141947-12-23
19481948-02-031948-11-17
19491949-04-021949-12-18
19501950-01-051950-12-29
19511951-01-011951-10-03
19521952-01-291952-12-14
19531953-02-071953-12-19
19541954-01-191954-12-08
19551955-01-211955-12-18
19561956-01-171956-12-17
19571957-01-071957-12-29
19581958-01-171958-12-20
19591959-01-241959-12-21
19601960-01-211960-12-28
19611961-01-261961-12-15
19621962-01-191962-11-20
19631963-01-041963-12-08
19641964-01-281964-12-26
19651965-01-221965-11-03
19661966-02-021966-12-10
19671967-01-121967-11-23
19681968-03-031968-12-07
19691969-02-241969-11-07
19701970-02-061970-12-24
19711971-01-061971-10-28
19721972-01-061972-10-13
19731973-02-161973-12-24
19741974-01-091974-12-18
19751975-01-221975-12-23
19761976-01-041976-12-31
19771977-01-081977-12-30
19781978-01-041978-12-15
19791979-01-261979-11-25
19801980-01-211980-11-24
19811981-01-251981-12-23
19821982-01-281982-12-05
19831983-01-301983-12-31
19841984-03-051984-12-24
19851985-01-131985-12-24
19861986-01-181986-11-25
19871987-01-111987-12-22
19881988-01-141988-12-28
19891989-02-111989-12-13
19901990-01-091990-12-16
19911991-01-051991-12-31
19921992-02-111992-11-01
19931993-01-291993-12-24
19941994-01-071994-12-26
19951995-01-141995-12-17
19961996-01-061996-12-29
19971997-01-081997-11-16

Every Fixed Threshold

Fixed thresholds at Glen Roy
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain7138197620
25 mm (0.98 in): Days with 25 mm or more rain661019434
50 mm (1.97 in): Days with 50 mm or more rain16419741

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

  • Data for Glen Roy 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).