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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Oshawa Threshold Days by Year (CA006155876)

15 fixed thresholds counted per year at Oshawa (CA006155876): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oshawa Thresholds

  • Oshawa: days with 10 mm (0.39 in) or more of precipitation in 15 years, most in 1883 with 33.
  • Oshawa: days with 25 mm (0.98 in) or more of precipitation in 14 years, most in 1917 with 8.
  • Oshawa: days with 10 cm (3.9 in) or more of snowfall in 14 years, most in 1887 with 9.
  • Oshawa: days with a maximum temperature at or below 0 C (32 F) in 13 years, most in 1885 with 77.
  • 15 fixed thresholds have at least one qualifying day at Oshawa.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Oshawa Days per year at Oshawa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 21 in 1887. 01020301884: 151885: 111886: 61887: 211889: 11890: 21914: 91915: 21954: 71956: 21957: 41958: 1188418861889191419541957
Days per year at Oshawa with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 21 in 1887.
Days at or above 30 C (86 F) per year at Oshawa
YearDaysDecade average
18841510.8
18851110.8
1886610.8
18872110.8
1889110.8
189022
191495.5
191525.5
195473.5
195623.5
195743.5
195813.5
First to last qualifying date each year at Oshawa For each year, a bar from the first to the last day at Oshawa meeting 30 C (86 F). 1884: 7 June 1884 to 10 September 18841885: 10 July 1885 to 31 August 18851886: 5 July 1886 to 29 August 18861887: 1 July 1887 to 11 August 18871889: 10 July 1889 to 10 July 18891890: 1 July 1890 to 15 July 18901914: 24 June 1914 to 10 August 19141915: 31 July 1915 to 1 August 19151954: 13 July 1954 to 31 July 19541956: 12 June 1956 to 13 June 19561957: 17 June 1957 to 19 July 19571958: 2 July 1958 to 2 July 1958188418861889191419541957JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Oshawa meeting 30 C (86 F).
First to last qualifying date each year at Oshawa
YearFirst dateLast date
18841884-06-071884-09-10
18851885-07-101885-08-31
18861886-07-051886-08-29
18871887-07-011887-08-11
18891889-07-101889-07-10
18901890-07-011890-07-15
19141914-06-241914-08-10
19151915-07-311915-08-01
19541954-07-131954-07-31
19561956-06-121956-06-13
19571957-06-171957-07-19
19581958-07-021958-07-02

Every Fixed Threshold

Fixed thresholds at Oshawa
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days122118871
35 C (95 F): Days1118871
90 F (32.2 C): Days8718871
100 F (37.8 C): Days1118871
0 C (32 F): Ice days (max1377188563
0 C (32 F): Frost days (min131691885142
-10 C (14 F): Days with min1376188348
-20 C (-4 F): Days with min122718854
-30 C (-22 F): Days with min3118841
20 C (68 F): Tropical nights (min9519574
10 mm (0.39 in): Days with 10 mm or more rain1533188324
25 mm (0.98 in): Days with 25 mm or more rain14819173
50 mm (1.97 in): Days with 50 mm or more rain3118831
10 cm (3.9 in): Days with 10 cm or more snowfall14918872
25 cm (9.8 in): Days with 25 cm or more snowfall5118831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1884.

Download the Data

  • Data for Oshawa 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).