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

Bowmanville Mostert Threshold Days by Year (CA006150830)

13 fixed thresholds counted per year at Bowmanville Mostert (CA006150830): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bowmanville Mostert Thresholds

  • Bowmanville Mostert: days with a maximum temperature at or below 0 C (32 F) in 16 years, most in 1978 with 78.
  • Bowmanville Mostert: nights with a minimum temperature at or below 0 C (32 F) in 16 years, most in 1978 with 178.
  • Bowmanville Mostert: nights with a minimum temperature at or below -10 C (14 F) in 16 years, most in 1978 with 70.
  • Bowmanville Mostert: nights with a minimum temperature at or below -20 C (-4 F) in 16 years, most in 1980 with 17.
  • 13 fixed thresholds have at least one qualifying day at Bowmanville Mostert.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Bowmanville Mostert Days per year at Bowmanville Mostert with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1973. 0510151968: 71969: 31970: 21971: 31973: 111974: 21975: 31976: 11977: 21978: 11981: 51983: 7196819701973197519771981
Days per year at Bowmanville Mostert with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1973.
Days at or above 30 C (86 F) per year at Bowmanville Mostert
YearDaysDecade average
196875
196935
197023.1
197133.1
1973113.1
197423.1
197533.1
197613.1
197723.1
197813.1
198156
198376
First to last qualifying date each year at Bowmanville Mostert For each year, a bar from the first to the last day at Bowmanville Mostert meeting 30 C (86 F). 1968: 1 July 1968 to 20 August 19681969: 14 July 1969 to 24 August 19691970: 9 June 1970 to 1 August 19701971: 29 June 1971 to 7 August 19711973: 8 July 1973 to 4 September 19731974: 9 July 1974 to 14 July 19741975: 31 July 1975 to 2 August 19751976: 7 June 1976 to 7 June 19761977: 28 May 1977 to 20 July 19771978: 20 July 1978 to 20 July 19781981: 7 July 1981 to 13 July 19811983: 12 July 1983 to 10 September 1983196819701973197519771981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bowmanville Mostert meeting 30 C (86 F).
First to last qualifying date each year at Bowmanville Mostert
YearFirst dateLast date
19681968-07-011968-08-20
19691969-07-141969-08-24
19701970-06-091970-08-01
19711971-06-291971-08-07
19731973-07-081973-09-04
19741974-07-091974-07-14
19751975-07-311975-08-02
19761976-06-071976-06-07
19771977-05-281977-07-20
19781978-07-201978-07-20
19811981-07-071981-07-13
19831983-07-121983-09-10

Every Fixed Threshold

Fixed thresholds at Bowmanville Mostert
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days121119737
35 C (95 F): Days1119831
90 F (32.2 C): Days6219732
0 C (32 F): Ice days (max1678197852
0 C (32 F): Frost days (min161781978135
-10 C (14 F): Days with min1670197839
-20 C (-4 F): Days with min161719802
-30 C (-22 F): Days with min6319813
20 C (68 F): Tropical nights (min1010198310
10 mm (0.39 in): Days with 10 mm or more rain1638197730
25 mm (0.98 in): Days with 25 mm or more rain15719696
50 mm (1.97 in): Days with 50 mm or more rain2119741
10 cm (3.9 in): Days with 10 cm or more snowfall13719773

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

  • Data for Bowmanville Mostert 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).