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Built 2026-10-15 (15 October 2026)

Bow River Threshold Days by Year

4 fixed thresholds counted per year at Bow River (ASN00002003): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bow River Thresholds

  • Bow River: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1982 with 34.
  • Bow River: days with 25 mm (0.98 in) or more of precipitation in 41 years, most in 1973 with 18.
  • Bow River: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1969 with 7.
  • Bow River: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1960 with 2.
  • 4 fixed thresholds have at least one qualifying day at Bow River.
41 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Bow River Days per year at Bow River with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1982. 0102030401946: 131947: 251948: 71949: 211950: 241951: 161952: 131953: 111954: 121955: 231956: 191957: 161958: 141959: 251960: 261961: 101962: 211963: 171964: 121965: 111966: 201967: 251968: 261969: 211970: 131971: 191972: 101973: 281974: 271975: 171976: 231977: 241978: 201979: 211980: 221981: 231982: 341987: 201989: 131990: 121991: 25194619511956196119661971197619811991
Days per year at Bow River with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1982.
Days with 10 mm (0.39 in) or more of precipitation per year at Bow River
YearDaysDecade average
19461316.5
19472516.5
1948716.5
19492116.5
19502417.3
19511617.3
19521317.3
19531117.3
19541217.3
19552317.3
19561917.3
19571617.3
19581417.3
19592517.3
19602618.9
19611018.9
19622118.9
19631718.9
19641218.9
19651118.9
19662018.9
19672518.9
19682618.9
19692118.9
19701320.2
19711920.2
19721020.2
19732820.2
19742720.2
19751720.2
19762320.2
19772420.2
19782020.2
19792120.2
19802222.4
19812322.4
19823422.4
19872022.4
19891322.4
19901218.5
19912518.5
First to last qualifying date each year at Bow River For each year, a bar from the first to the last day at Bow River meeting 10 mm (0.39 in). 1946: 9 January 1946 to 23 December 19461947: 6 January 1947 to 28 December 19471948: 24 January 1948 to 18 December 19481949: 2 January 1949 to 26 December 19491950: 4 January 1950 to 30 December 19501951: 3 January 1951 to 14 March 19511952: 3 January 1952 to 29 December 19521953: 4 January 1953 to 27 November 19531954: 23 January 1954 to 15 November 19541955: 5 January 1955 to 24 December 19551956: 10 January 1956 to 7 December 19561957: 7 January 1957 to 28 December 19571958: 16 January 1958 to 31 December 19581959: 6 January 1959 to 22 December 19591960: 17 January 1960 to 31 December 19601961: 1 February 1961 to 17 December 19611962: 5 January 1962 to 21 December 19621963: 10 January 1963 to 27 February 19631964: 20 January 1964 to 29 December 19641965: 20 January 1965 to 26 December 19651966: 5 January 1966 to 31 December 19661967: 15 January 1967 to 24 December 19671968: 3 January 1968 to 24 December 19681969: 7 January 1969 to 20 December 19691970: 21 January 1970 to 20 December 19701971: 3 January 1971 to 28 December 19711972: 1 January 1972 to 9 March 19721973: 7 January 1973 to 30 December 19731974: 1 January 1974 to 18 December 19741975: 9 January 1975 to 19 December 19751976: 3 January 1976 to 31 December 19761977: 2 January 1977 to 17 December 19771978: 1 January 1978 to 28 December 19781979: 10 January 1979 to 6 December 19791980: 1 January 1980 to 24 December 19801981: 15 January 1981 to 30 December 19811982: 2 January 1982 to 29 December 19821987: 15 January 1987 to 27 December 19871989: 20 January 1989 to 24 December 19891990: 5 January 1990 to 20 December 19901991: 5 January 1991 to 29 December 19911946195219581964197019761982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bow River meeting 10 mm (0.39 in).
First to last qualifying date each year at Bow River
YearFirst dateLast date
19461946-01-091946-12-23
19471947-01-061947-12-28
19481948-01-241948-12-18
19491949-01-021949-12-26
19501950-01-041950-12-30
19511951-01-031951-03-14
19521952-01-031952-12-29
19531953-01-041953-11-27
19541954-01-231954-11-15
19551955-01-051955-12-24
19561956-01-101956-12-07
19571957-01-071957-12-28
19581958-01-161958-12-31
19591959-01-061959-12-22
19601960-01-171960-12-31
19611961-02-011961-12-17
19621962-01-051962-12-21
19631963-01-101963-02-27
19641964-01-201964-12-29
19651965-01-201965-12-26
19661966-01-051966-12-31
19671967-01-151967-12-24
19681968-01-031968-12-24
19691969-01-071969-12-20
19701970-01-211970-12-20
19711971-01-031971-12-28
19721972-01-011972-03-09
19731973-01-071973-12-30
19741974-01-011974-12-18
19751975-01-091975-12-19
19761976-01-031976-12-31
19771977-01-021977-12-17
19781978-01-011978-12-28
19791979-01-101979-12-06
19801980-01-011980-12-24
19811981-01-151981-12-30
19821982-01-021982-12-29
19871987-01-151987-12-27
19891989-01-201989-12-24
19901990-01-051990-12-20
19911991-01-051991-12-29

Every Fixed Threshold

Fixed thresholds at Bow River
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4134198225
25 mm (0.98 in): Days with 25 mm or more rain411819733
50 mm (1.97 in): Days with 50 mm or more rain36719692
100 mm (3.94 in): Days with 100 mm or more rain8219601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.

Download the Data

  • Data for Bow River 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

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