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Built 2026-10-16 (16 October 2026)

Grouse Threshold Days by Year

14 fixed thresholds counted per year at Grouse (USC00103882): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grouse Thresholds

  • Grouse: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1983 with 19.
  • Grouse: days with 10 cm (3.9 in) or more of snowfall in 50 years, most in 1975 with 15.
  • Grouse: days with a maximum temperature at or below 0 C (32 F) in 48 years, most in 1985 with 108.
  • Grouse: nights with a minimum temperature at or below 0 C (32 F) in 48 years, most in 1948 with 285.
  • 14 fixed thresholds have at least one qualifying day at Grouse.
44 years with a qualifying day
Days at or above 30 C (86 F) per year at Grouse Days per year at Grouse with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 1985. 01020301947: 71948: 21949: 101950: 101951: 51953: 61954: 81955: 141956: 31957: 31958: 71959: 181960: 171961: 201962: 21964: 11966: 201967: 181968: 51969: 171970: 121971: 101972: 101973: 141974: 221975: 71976: 111977: 141978: 91979: 151980: 21981: 131982: 101983: 51984: 51985: 231986: 161987: 51989: 161990: 131991: 101992: 141994: 161995: 3194719531958196419701975198019851991
Days per year at Grouse with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 23 in 1985.
Days at or above 30 C (86 F) per year at Grouse
YearDaysDecade average
194776.3
194826.3
1949106.3
1950108.2
195158.2
195368.2
195488.2
1955148.2
195638.2
195738.2
195878.2
1959188.2
19601712.5
19612012.5
1962212.5
1964112.5
19662012.5
19671812.5
1968512.5
19691712.5
19701212.4
19711012.4
19721012.4
19731412.4
19742212.4
1975712.4
19761112.4
19771412.4
1978912.4
19791512.4
1980210.6
19811310.6
19821010.6
1983510.6
1984510.6
19852310.6
19861610.6
1987510.6
19891610.6
19901311.2
19911011.2
19921411.2
19941611.2
1995311.2
First to last qualifying date each year at Grouse For each year, a bar from the first to the last day at Grouse meeting 30 C (86 F). 1947: 19 July 1947 to 9 August 19471948: 29 August 1948 to 2 September 19481949: 15 July 1949 to 6 August 19491950: 17 August 1950 to 6 September 19501951: 15 July 1951 to 17 August 19511953: 12 July 1953 to 13 August 19531954: 12 July 1954 to 1 September 19541955: 15 July 1955 to 7 September 19551956: 9 July 1956 to 21 August 19561957: 9 July 1957 to 16 August 19571958: 11 August 1958 to 17 August 19581959: 16 July 1959 to 11 August 19591960: 15 July 1960 to 20 August 19601961: 8 July 1961 to 22 August 19611962: 14 August 1962 to 15 August 19621964: 26 July 1964 to 26 July 19641966: 18 July 1966 to 6 September 19661967: 12 July 1967 to 4 September 19671968: 25 July 1968 to 7 August 19681969: 24 May 1969 to 2 September 19691970: 4 July 1970 to 29 September 19701971: 15 July 1971 to 22 August 19711972: 13 July 1972 to 12 August 19721973: 27 June 1973 to 19 August 19731974: 11 June 1974 to 28 August 19741975: 7 July 1975 to 11 August 19751976: 29 June 1976 to 5 September 19761977: 5 June 1977 to 6 September 19771978: 23 July 1978 to 9 August 19781979: 28 June 1979 to 7 September 19791980: 23 July 1980 to 24 July 19801981: 26 June 1981 to 27 August 19811982: 20 July 1982 to 23 August 19821983: 29 July 1983 to 7 August 19831984: 16 July 1984 to 11 August 19841985: 19 June 1985 to 28 August 19851986: 24 June 1986 to 28 August 19861987: 14 July 1987 to 1 September 19871989: 3 July 1989 to 31 July 19891990: 29 June 1990 to 11 September 19901991: 5 July 1991 to 22 August 19911992: 22 June 1992 to 19 August 19921994: 20 June 1994 to 20 August 19941995: 28 July 1995 to 1 September 199519471954196019681974198019861994JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grouse meeting 30 C (86 F).
First to last qualifying date each year at Grouse
YearFirst dateLast date
19471947-07-191947-08-09
19481948-08-291948-09-02
19491949-07-151949-08-06
19501950-08-171950-09-06
19511951-07-151951-08-17
19531953-07-121953-08-13
19541954-07-121954-09-01
19551955-07-151955-09-07
19561956-07-091956-08-21
19571957-07-091957-08-16
19581958-08-111958-08-17
19591959-07-161959-08-11
19601960-07-151960-08-20
19611961-07-081961-08-22
19621962-08-141962-08-15
19641964-07-261964-07-26
19661966-07-181966-09-06
19671967-07-121967-09-04
19681968-07-251968-08-07
19691969-05-241969-09-02
19701970-07-041970-09-29
19711971-07-151971-08-22
19721972-07-131972-08-12
19731973-06-271973-08-19
19741974-06-111974-08-28
19751975-07-071975-08-11
19761976-06-291976-09-05
19771977-06-051977-09-06
19781978-07-231978-08-09
19791979-06-281979-09-07
19801980-07-231980-07-24
19811981-06-261981-08-27
19821982-07-201982-08-23
19831983-07-291983-08-07
19841984-07-161984-08-11
19851985-06-191985-08-28
19861986-06-241986-08-28
19871987-07-141987-09-01
19891989-07-031989-07-31
19901990-06-291990-09-11
19911991-07-051991-08-22
19921992-06-221992-08-19
19941994-06-201994-08-20
19951995-07-281995-09-01

Every Fixed Threshold

Fixed thresholds at Grouse
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days442319853
90 F (32.2 C): Days231319854
0 C (32 F): Ice days (max48108198548
0 C (32 F): Frost days (min482851948230
-10 C (14 F): Days with min48150195293
-20 C (-4 F): Days with min4883195218
-30 C (-22 F): Days with min432719521
-40 C (-40 F): Days with min5219711
10 mm (0.39 in): Days with 10 mm or more rain631919837
25 mm (0.98 in): Days with 25 mm or more rain35519691
50 mm (1.97 in): Days with 50 mm or more rain3119431
10 cm (3.9 in): Days with 10 cm or more snowfall501519753
25 cm (9.8 in): Days with 25 cm or more snowfall18419522
50 cm (19.7 in): Days with 50 cm or more snowfall2119431

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1947.

Download the Data

  • Data for Grouse 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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