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Built 2026-10-19 (19 October 2026)

Lac Onatchiway Threshold Days by Year (CA007063683)

15 fixed thresholds counted per year at Lac Onatchiway (CA007063683): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lac Onatchiway Thresholds

  • Lac Onatchiway: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1947 with 138.
  • Lac Onatchiway: nights with a minimum temperature at or below 0 C (32 F) in 39 years, most in 1946 with 250.
  • Lac Onatchiway: nights with a minimum temperature at or below -10 C (14 F) in 39 years, most in 1929 with 144.
  • Lac Onatchiway: nights with a minimum temperature at or below -20 C (-4 F) in 39 years, most in 1939 with 89.
  • 15 fixed thresholds have at least one qualifying day at Lac Onatchiway.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Lac Onatchiway Days per year at Lac Onatchiway with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1947. 051015201923: 11926: 31927: 31928: 41929: 11930: 11931: 51932: 21933: 61935: 61936: 11937: 61938: 31939: 71941: 31942: 21943: 41944: 61945: 31946: 11947: 161948: 21949: 91950: 31951: 11952: 21953: 21954: 11955: 51956: 11959: 31960: 61961: 1192319291933193819431947195119551961
Days per year at Lac Onatchiway with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 16 in 1947.
Days at or above 30 C (86 F) per year at Lac Onatchiway
YearDaysDecade average
192312.4
192632.4
192732.4
192842.4
192912.4
193014.1
193154.1
193224.1
193364.1
193564.1
193614.1
193764.1
193834.1
193974.1
194135.1
194225.1
194345.1
194465.1
194535.1
194615.1
1947165.1
194825.1
194995.1
195032.3
195112.3
195222.3
195322.3
195412.3
195552.3
195612.3
195932.3
196063.5
196113.5
First to last qualifying date each year at Lac Onatchiway For each year, a bar from the first to the last day at Lac Onatchiway meeting 30 C (86 F). 1923: 19 June 1923 to 19 June 19231926: 28 July 1926 to 2 August 19261927: 1 July 1927 to 17 July 19271928: 13 August 1928 to 16 August 19281929: 29 May 1929 to 29 May 19291930: 30 June 1930 to 30 June 19301931: 28 May 1931 to 10 July 19311932: 5 July 1932 to 11 August 19321933: 9 June 1933 to 23 July 19331935: 21 July 1935 to 20 August 19351936: 13 June 1936 to 13 June 19361937: 25 June 1937 to 30 August 19371938: 16 June 1938 to 14 July 19381939: 8 June 1939 to 16 September 19391941: 21 June 1941 to 24 July 19411942: 11 June 1942 to 30 June 19421943: 11 July 1943 to 14 July 19431944: 27 June 1944 to 8 July 19441945: 17 July 1945 to 1 August 19451946: 1 July 1946 to 1 July 19461947: 11 June 1947 to 14 August 19471948: 10 July 1948 to 27 August 19481949: 3 June 1949 to 27 July 19491950: 25 May 1950 to 11 July 19501951: 10 July 1951 to 10 July 19511952: 7 July 1952 to 8 July 19521953: 17 July 1953 to 18 July 19531954: 19 June 1954 to 19 June 19541955: 6 June 1955 to 9 July 19551956: 14 June 1956 to 14 June 19561959: 29 June 1959 to 10 September 19591960: 27 May 1960 to 31 August 19601961: 23 July 1961 to 23 July 19611923193019361942194719521959JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lac Onatchiway meeting 30 C (86 F).
First to last qualifying date each year at Lac Onatchiway
YearFirst dateLast date
19231923-06-191923-06-19
19261926-07-281926-08-02
19271927-07-011927-07-17
19281928-08-131928-08-16
19291929-05-291929-05-29
19301930-06-301930-06-30
19311931-05-281931-07-10
19321932-07-051932-08-11
19331933-06-091933-07-23
19351935-07-211935-08-20
19361936-06-131936-06-13
19371937-06-251937-08-30
19381938-06-161938-07-14
19391939-06-081939-09-16
19411941-06-211941-07-24
19421942-06-111942-06-30
19431943-07-111943-07-14
19441944-06-271944-07-08
19451945-07-171945-08-01
19461946-07-011946-07-01
19471947-06-111947-08-14
19481948-07-101948-08-27
19491949-06-031949-07-27
19501950-05-251950-07-11
19511951-07-101951-07-10
19521952-07-071952-07-08
19531953-07-171953-07-18
19541954-06-191954-06-19
19551955-06-061955-07-09
19561956-06-141956-06-14
19591959-06-291959-09-10
19601960-05-271960-08-31
19611961-07-231961-07-23

Every Fixed Threshold

Fixed thresholds at Lac Onatchiway
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days331619471
90 F (32.2 C): Days18519471
0 C (32 F): Ice days (max41138194777
0 C (32 F): Frost days (min392501946191
-10 C (14 F): Days with min391441929105
-20 C (-4 F): Days with min3989193955
-30 C (-22 F): Days with min3943194331
-40 C (-40 F): Days with min311319346
20 C (68 F): Tropical nights (min4219251
10 mm (0.39 in): Days with 10 mm or more rain3959193036
25 mm (0.98 in): Days with 25 mm or more rain391219324
50 mm (1.97 in): Days with 50 mm or more rain15219472
10 cm (3.9 in): Days with 10 cm or more snowfall392219298
25 cm (9.8 in): Days with 25 cm or more snowfall16319341
50 cm (19.7 in): Days with 50 cm or more snowfall3119341

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1923.

Download the Data

  • Data for Lac Onatchiway 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 (2026-10-17).