Built 2026-10-16 (16 October 2026)

Rainbow Lake Threshold Days by Year

17 fixed thresholds counted per year at Rainbow Lake (USC00387113): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rainbow Lake Thresholds

  • Rainbow Lake: days with a maximum temperature at or above 30 C (86 F) in 47 years, most in 1954 with 122.
  • Rainbow Lake: days with a maximum temperature at or above 35 C (95 F) in 47 years, most in 1954 with 47.
  • Rainbow Lake: days with a maximum temperature at or above 90 F (32.2 C) in 47 years, most in 1954 with 92.
  • Rainbow Lake: nights with a minimum temperature at or below 0 C (32 F) in 47 years, most in 1969 with 117.
  • 17 fixed thresholds have at least one qualifying day at Rainbow Lake.
47 years with a qualifying day
Days at or above 30 C (86 F) per year at Rainbow Lake Days per year at Rainbow Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 122 in 1954. 0501001501931: 1081932: 791933: 951935: 761936: 931937: 781938: 871939: 1131940: 801941: 1131942: 891943: 951944: 1001945: 841946: 711947: 931948: 821949: 581950: 831951: 1001952: 1041953: 1031954: 1221955: 981956: 1081957: 971958: 921959: 1041960: 941961: 841962: 1171963: 1131964: 1041965: 1021966: 751967: 771968: 841969: 731970: 1071971: 861972: 941973: 971974: 751975: 871976: 671977: 991978: 1031931193719421947195219571962196719721977
Days per year at Rainbow Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 122 in 1954.
Days at or above 30 C (86 F) per year at Rainbow Lake
YearDaysDecade average
193110891.1
19327991.1
19339591.1
19357691.1
19369391.1
19377891.1
19388791.1
193911391.1
19408086.5
194111386.5
19428986.5
19439586.5
194410086.5
19458486.5
19467186.5
19479386.5
19488286.5
19495886.5
195083101.1
1951100101.1
1952104101.1
1953103101.1
1954122101.1
195598101.1
1956108101.1
195797101.1
195892101.1
1959104101.1
19609492.3
19618492.3
196211792.3
196311392.3
196410492.3
196510292.3
19667592.3
19677792.3
19688492.3
19697392.3
197010790.6
19718690.6
19729490.6
19739790.6
19747590.6
19758790.6
19766790.6
19779990.6
197810390.6
First to last qualifying date each year at Rainbow Lake For each year, a bar from the first to the last day at Rainbow Lake meeting 30 C (86 F). 1931: 17 May 1931 to 25 October 19311932: 5 May 1932 to 18 September 19321933: 13 May 1933 to 1 October 19331935: 21 March 1935 to 15 October 19351936: 15 April 1936 to 29 September 19361937: 18 April 1937 to 30 October 19371938: 29 April 1938 to 19 October 19381939: 11 May 1939 to 25 October 19391940: 6 May 1940 to 26 October 19401941: 14 April 1941 to 23 October 19411942: 18 April 1942 to 24 September 19421943: 28 April 1943 to 21 October 19431944: 10 April 1944 to 7 October 19441945: 17 March 1945 to 30 September 19451946: 3 April 1946 to 19 October 19461947: 25 April 1947 to 22 September 19471948: 25 April 1948 to 22 September 19481949: 7 June 1949 to 22 October 19491950: 28 April 1950 to 31 October 19501951: 30 April 1951 to 7 October 19511952: 20 April 1952 to 2 October 19521953: 24 April 1953 to 12 October 19531954: 15 April 1954 to 13 October 19541955: 19 April 1955 to 30 September 19551956: 30 April 1956 to 1 October 19561957: 21 April 1957 to 22 September 19571958: 24 April 1958 to 10 October 19581959: 2 May 1959 to 5 October 19591960: 23 April 1960 to 20 September 19601961: 16 May 1961 to 1 November 19611962: 23 April 1962 to 17 October 19621963: 18 March 1963 to 27 October 19631964: 19 April 1964 to 24 September 19641965: 9 April 1965 to 1 October 19651966: 9 May 1966 to 10 September 19661967: 15 March 1967 to 7 October 19671968: 19 April 1968 to 25 September 19681969: 5 May 1969 to 18 September 19691970: 21 April 1970 to 3 October 19701971: 18 April 1971 to 5 October 19711972: 14 April 1972 to 27 September 19721973: 23 May 1973 to 5 October 19731974: 8 March 1974 to 2 November 19741975: 28 April 1975 to 14 October 19751976: 18 April 1976 to 10 September 19761977: 11 April 1977 to 20 September 19771978: 2 April 1978 to 25 September 197819311938194419501956196219681974JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rainbow Lake meeting 30 C (86 F).
First to last qualifying date each year at Rainbow Lake
YearFirst dateLast date
19311931-05-171931-10-25
19321932-05-051932-09-18
19331933-05-131933-10-01
19351935-03-211935-10-15
19361936-04-151936-09-29
19371937-04-181937-10-30
19381938-04-291938-10-19
19391939-05-111939-10-25
19401940-05-061940-10-26
19411941-04-141941-10-23
19421942-04-181942-09-24
19431943-04-281943-10-21
19441944-04-101944-10-07
19451945-03-171945-09-30
19461946-04-031946-10-19
19471947-04-251947-09-22
19481948-04-251948-09-22
19491949-06-071949-10-22
19501950-04-281950-10-31
19511951-04-301951-10-07
19521952-04-201952-10-02
19531953-04-241953-10-12
19541954-04-151954-10-13
19551955-04-191955-09-30
19561956-04-301956-10-01
19571957-04-211957-09-22
19581958-04-241958-10-10
19591959-05-021959-10-05
19601960-04-231960-09-20
19611961-05-161961-11-01
19621962-04-231962-10-17
19631963-03-181963-10-27
19641964-04-191964-09-24
19651965-04-091965-10-01
19661966-05-091966-09-10
19671967-03-151967-10-07
19681968-04-191968-09-25
19691969-05-051969-09-18
19701970-04-211970-10-03
19711971-04-181971-10-05
19721972-04-141972-09-27
19731973-05-231973-10-05
19741974-03-081974-11-02
19751975-04-281975-10-14
19761976-04-181976-09-10
19771977-04-111977-09-20
19781978-04-021978-09-25

Every Fixed Threshold

Fixed thresholds at Rainbow Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days471221954103
35 C (95 F): Days4747195417
40 C (104 F): Days2219521
90 F (32.2 C): Days4792195463
100 F (37.8 C): Days211219521
0 C (32 F): Ice days (max19519701
0 C (32 F): Frost days (min47117196997
-10 C (14 F): Days with min4223197711
-20 C (-4 F): Days with min1119401
20 C (68 F): Tropical nights (min4780194318
25 C (77 F): Days with min3119411
10 mm (0.39 in): Days with 10 mm or more rain4356197533
25 mm (0.98 in): Days with 25 mm or more rain432619649
50 mm (1.97 in): Days with 50 mm or more rain42819364
100 mm (3.94 in): Days with 100 mm or more rain13419641
10 cm (3.9 in): Days with 10 cm or more snowfall11319601
25 cm (9.8 in): Days with 25 cm or more snowfall2119351

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1931.

Download the Data

  • Data for Rainbow Lake 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).