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Built 2026-10-19 (19 October 2026)

Oka Threshold Days by Year (CA007015730)

16 fixed thresholds counted per year at Oka (CA007015730): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oka Thresholds

  • Oka: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1940 with 107.
  • Oka: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1972 with 187.
  • Oka: nights with a minimum temperature at or below -10 C (14 F) in 41 years, most in 1978 with 99.
  • Oka: nights with a minimum temperature at or below -20 C (-4 F) in 41 years, most in 1976 with 40.
  • 16 fixed thresholds have at least one qualifying day at Oka.
40 years with a qualifying day
Days at or above 30 C (86 F) per year at Oka Days per year at Oka with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 1955. 01020301939: 101940: 101941: 141942: 81943: 51944: 241945: 81946: 141947: 201948: 131953: 161954: 11955: 281956: 41957: 101959: 211960: 81961: 71962: 121963: 141964: 91965: 51966: 91967: 31968: 61969: 81970: 151971: 81972: 41973: 91974: 11975: 141976: 41977: 101978: 111979: 81980: 31981: 11982: 71983: 231939194319471955196019641968197219761980
Days per year at Oka with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 1955.
Days at or above 30 C (86 F) per year at Oka
YearDaysDecade average
19391010
19401012.9
19411412.9
1942812.9
1943512.9
19442412.9
1945812.9
19461412.9
19472012.9
19481312.9
19531613.3
1954113.3
19552813.3
1956413.3
19571013.3
19592113.3
196088.1
196178.1
1962128.1
1963148.1
196498.1
196558.1
196698.1
196738.1
196868.1
196988.1
1970158.4
197188.4
197248.4
197398.4
197418.4
1975148.4
197648.4
1977108.4
1978118.4
197988.4
198038.5
198118.5
198278.5
1983238.5
First to last qualifying date each year at Oka For each year, a bar from the first to the last day at Oka meeting 30 C (86 F). 1939: 8 May 1939 to 16 September 19391940: 22 July 1940 to 18 August 19401941: 21 May 1941 to 8 August 19411942: 10 June 1942 to 1 September 19421943: 25 June 1943 to 31 July 19431944: 6 May 1944 to 16 August 19441945: 14 June 1945 to 7 September 19451946: 25 June 1946 to 19 September 19461947: 11 June 1947 to 11 September 19471948: 29 June 1948 to 8 September 19481953: 10 May 1953 to 4 September 19531954: 25 August 1954 to 25 August 19541955: 6 June 1955 to 10 September 19551956: 12 June 1956 to 15 June 19561957: 15 June 1957 to 3 August 19571959: 8 June 1959 to 26 August 19591960: 12 July 1960 to 9 September 19601961: 15 May 1961 to 4 September 19611962: 18 May 1962 to 31 August 19621963: 24 June 1963 to 29 July 19631964: 23 May 1964 to 28 July 19641965: 27 June 1965 to 22 September 19651966: 23 June 1966 to 9 August 19661967: 3 June 1967 to 5 June 19671968: 14 July 1968 to 22 July 19681969: 12 June 1969 to 31 August 19691970: 9 July 1970 to 16 August 19701971: 19 May 1971 to 19 August 19711972: 12 July 1972 to 21 July 19721973: 8 July 1973 to 5 September 19731974: 10 June 1974 to 10 June 19741975: 20 May 1975 to 3 August 19751976: 6 June 1976 to 21 August 19761977: 17 May 1977 to 29 August 19771978: 27 May 1978 to 16 August 19781979: 9 May 1979 to 25 July 19791980: 24 June 1980 to 14 July 19801981: 16 June 1981 to 16 June 19811982: 7 July 1982 to 22 July 19821983: 12 June 1983 to 20 September 198319391944195319591964196919741979JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Oka meeting 30 C (86 F).
First to last qualifying date each year at Oka
YearFirst dateLast date
19391939-05-081939-09-16
19401940-07-221940-08-18
19411941-05-211941-08-08
19421942-06-101942-09-01
19431943-06-251943-07-31
19441944-05-061944-08-16
19451945-06-141945-09-07
19461946-06-251946-09-19
19471947-06-111947-09-11
19481948-06-291948-09-08
19531953-05-101953-09-04
19541954-08-251954-08-25
19551955-06-061955-09-10
19561956-06-121956-06-15
19571957-06-151957-08-03
19591959-06-081959-08-26
19601960-07-121960-09-09
19611961-05-151961-09-04
19621962-05-181962-08-31
19631963-06-241963-07-29
19641964-05-231964-07-28
19651965-06-271965-09-22
19661966-06-231966-08-09
19671967-06-031967-06-05
19681968-07-141968-07-22
19691969-06-121969-08-31
19701970-07-091970-08-16
19711971-05-191971-08-19
19721972-07-121972-07-21
19731973-07-081973-09-05
19741974-06-101974-06-10
19751975-05-201975-08-03
19761976-06-061976-08-21
19771977-05-171977-08-29
19781978-05-271978-08-16
19791979-05-091979-07-25
19801980-06-241980-07-14
19811981-06-161981-06-16
19821982-07-071982-07-22
19831983-06-121983-09-20

Every Fixed Threshold

Fixed thresholds at Oka
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4028195523
35 C (95 F): Days6319531
90 F (32.2 C): Days271119552
0 C (32 F): Ice days (max41107194080
0 C (32 F): Frost days (min411871972180
-10 C (14 F): Days with min4199197867
-20 C (-4 F): Days with min4140197620
-30 C (-22 F): Days with min22819792
20 C (68 F): Tropical nights (min381519478
25 C (77 F): Days with min1119551
10 mm (0.39 in): Days with 10 mm or more rain3442198342
25 mm (0.98 in): Days with 25 mm or more rain341219727
50 mm (1.97 in): Days with 50 mm or more rain9219791
10 cm (3.9 in): Days with 10 cm or more snowfall341419628
25 cm (9.8 in): Days with 25 cm or more snowfall16319661
50 cm (19.7 in): Days with 50 cm or more snowfall1119661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

  • Data for Oka 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).