Oshawa Weather Records (CA006155876)

Record envelope, standing records and threshold days for Oshawa (CA006155876), Ontario, Canada, with 78 years of record.

Key Facts for Oshawa

Oshawa (CA006155876) is a weather station in Ontario, Canada at 43.90 latitude and -78.87 longitude, 113 m (371 ft) above sea level.
The station reports from 1882 to 1959, 78 years of record.
1,464 records set at Oshawa still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Ontario, Canada, 43.90 latitude, -78.87 longitude.
Elevation: 113 m (371 ft).
Period of record: 1882 to 1959, 78 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Oshawa. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Oshawa, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.6 C (51.1 F)	-32.8 C (-27.0 F)	n/a	n/a
Feb	12.8 C (55.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Mar	19.4 C (66.9 F)	-27.2 C (-17.0 F)	n/a	n/a
Apr	26.7 C (80.1 F)	-13.3 C (8.1 F)	n/a	n/a
May	35.0 C (95.0 F)	-4.4 C (24.1 F)	n/a	n/a
Jun	33.3 C (91.9 F)	0.6 C (33.1 F)	n/a	n/a
Jul	37.8 C (100.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	2.8 C (37.0 F)	n/a	n/a
Sep	33.3 C (91.9 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	27.2 C (81.0 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-27.8 C (-18.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Oshawa still stand. 1885 holds the most, with 91.

Standing records at Oshawa by the year they were set
Year set	Standing records
1882	20
1883	69
1884	89
1885	91
1886	80
1887	74
1888	50
1889	67
1890	45
1891	17
1892	43
1893	29
1913	32
1914	60
1915	46
1916	71
1921	30
1923	35
1924	54
1925	69
1926	7
1952	6
1953	82
1954	60
1955	62
1956	61
1957	51
1958	39
1959	25

Wettest Day of Each Month

Nov: 71.1 mm (2.8 in)

The wettest day on record for each calendar month at Oshawa. The most was 71.1 mm (2.8 in) on 10 November 1913.

Record daily precipitation for each month at Oshawa
Month	Record daily precipitation (mm)	Date
Jan	48.3 mm (1.9 in)	4 January 1886
Feb	47.0 mm (1.9 in)	8 February 1887
Mar	53.3 mm (2.1 in)	17 March 1925
Apr	43.4 mm (1.7 in)	28 April 1913
May	57.2 mm (2.3 in)	25 May 1955
Jun	62.2 mm (2.4 in)	25 June 1883
Jul	37.1 mm (1.5 in)	3 July 1916
Aug	59.7 mm (2.4 in)	15 August 1956
Sep	64.3 mm (2.5 in)	16 September 1888
Oct	49.0 mm (1.9 in)	14 October 1955
Nov	71.1 mm (2.8 in)	10 November 1913
Dec	38.9 mm (1.5 in)	24 December 1889

Period of Record Coverage

1882 to 1959

29 years of record at Oshawa, 1882 to 1959. 16 years have data for under 90 percent of days and are left out of rankings: 1882, 1888, 1891, 1892, 1893, 1913, 1916, 1921 and others.

Days with data per year at Oshawa
Year	Days with data	Share of year	Complete
1882	115	32%	No
1883	364	100%	Yes
1884	363	99%	Yes
1885	364	100%	Yes
1886	362	99%	Yes
1887	362	99%	Yes
1888	244	67%	No
1889	365	100%	Yes
1890	334	92%	Yes
1891	91	25%	No
1892	251	69%	No
1893	207	57%	No
1913	174	48%	No
1914	365	100%	Yes
1915	365	100%	Yes
1916	274	75%	No
1921	172	47%	No
1923	226	62%	No
1924	328	90%	No
1925	315	86%	No
1926	30	8%	No
1952	24	7%	No
1953	326	89%	No
1954	348	95%	Yes
1955	305	84%	No
1956	347	95%	Yes
1957	349	96%	Yes
1958	331	91%	Yes
1959	175	48%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1882 to 1959

Yearly extremes at Oshawa: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1887	32.2 C (90.0 F)	29
Coldest night (TNn)	-32.8 C (-27.0 F)	1914	-23.3 C (-9.9 F)	29
Wettest day (Rx1day)	71.1 mm (2.8 in)	1913	38.9 mm (1.5 in)	31
Wettest five days (Rx5day)	90.9 mm (3.6 in)	1887	54.7 mm (2.2 in)	30
Longest dry spell (CDD)	39 days	1921	16 days	31

Hottest day (TXx)

The hottest day of the year at Oshawa, 1882 to 1959. The record is 37.8 C (100.0 F) in 1887, marked on the chart; the median year is 32.2 C (90.0 F).

Hottest day (TXx) at Oshawa by year
Year	Hottest day (TXx)
1882	28.3 C (82.9 F)
1883	27.8 C (82.0 F)
1884	33.3 C (91.9 F)
1885	32.8 C (91.0 F)
1886	32.2 C (90.0 F)
1887	37.8 C (100.0 F)
1888	30.0 C (86.0 F)
1889	31.1 C (88.0 F)
1890	31.1 C (88.0 F)
1891	26.1 C (79.0 F)
1892	31.1 C (88.0 F)
1893	33.3 C (91.9 F)
1913	23.9 C (75.0 F)
1914	32.8 C (91.0 F)
1915	30.6 C (87.1 F)
1916	34.4 C (93.9 F)
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	32.8 C (91.0 F)
1923	35.0 C (95.0 F)
1924	31.7 C (89.1 F)
1925	32.8 C (91.0 F)
1926	7.8 C (46.0 F)
1952	18.9 C (66.0 F)
1953	33.3 C (91.9 F)
1954	32.8 C (91.0 F)
1955	36.7 C (98.1 F)
1956	32.2 C (90.0 F)
1957	32.8 C (91.0 F)
1958	31.1 C (88.0 F)
1959	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Oshawa, 1882 to 1959. The record is -32.8 C (-27.0 F) in 1914, marked on the chart; the median year is -23.3 C (-9.9 F).

Coldest night (TNn) at Oshawa by year
Year	Coldest night (TNn)
1882	-19.4 C (-2.9 F)
1883	-23.3 C (-9.9 F)
1884	-31.7 C (-25.1 F)
1885	-27.2 C (-17.0 F)
1886	-30.0 C (-22.0 F)
1887	-28.9 C (-20.0 F)
1888	-28.9 C (-20.0 F)
1889	-27.2 C (-17.0 F)
1890	-21.7 C (-7.1 F)
1891	-21.7 C (-7.1 F)
1892	-23.9 C (-11.0 F)
1893	-30.0 C (-22.0 F)
1913	-21.7 C (-7.1 F)
1914	-32.8 C (-27.0 F)
1915	-24.4 C (-11.9 F)
1916	-27.8 C (-18.0 F)
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	-8.3 C (17.1 F)
1923	-11.7 C (10.9 F)
1924	-21.7 C (-7.1 F)
1925	-26.7 C (-16.1 F)
1926	-22.2 C (-8.0 F)
1952	-18.9 C (-2.0 F)
1953	-16.7 C (1.9 F)
1954	-22.8 C (-9.0 F)
1955	-24.4 C (-11.9 F)
1956	-18.9 C (-2.0 F)
1957	-26.7 C (-16.1 F)
1958	-23.3 C (-9.9 F)
1959	-22.8 C (-9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Oshawa, 1882 to 1959. The record is 71.1 mm (2.8 in) in 1913, marked on the chart; the median year is 38.9 mm (1.5 in).

Wettest day (Rx1day) at Oshawa by year
Year	Wettest day (Rx1day)
1882	21.8 mm (0.9 in)
1883	62.2 mm (2.4 in)
1884	42.2 mm (1.7 in)
1885	48.3 mm (1.9 in)
1886	48.3 mm (1.9 in)
1887	47.0 mm (1.9 in)
1888	64.3 mm (2.5 in)
1889	38.9 mm (1.5 in)
1890	38.4 mm (1.5 in)
1891	0.0 mm (0.00 in)
1892	n/a
1893	31.5 mm (1.2 in)
1913	71.1 mm (2.8 in)
1914	41.7 mm (1.6 in)
1915	39.9 mm (1.6 in)
1916	38.1 mm (1.5 in)
1917	48.3 mm (1.9 in)
1918	25.4 mm (1.0 in)
1919	17.8 mm (0.7 in)
1920	30.5 mm (1.2 in)
1921	18.3 mm (0.7 in)
1923	34.0 mm (1.3 in)
1924	37.6 mm (1.5 in)
1925	53.3 mm (2.1 in)
1926	n/a
1952	15.0 mm (0.6 in)
1953	30.5 mm (1.2 in)
1954	51.6 mm (2.0 in)
1955	57.2 mm (2.3 in)
1956	59.7 mm (2.4 in)
1957	61.7 mm (2.4 in)
1958	26.9 mm (1.1 in)
1959	30.5 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Oshawa, 1882 to 1959. The record is 90.9 mm (3.6 in) in 1887, marked on the chart; the median year is 54.7 mm (2.2 in).

Wettest five days (Rx5day) at Oshawa by year
Year	Wettest five days (Rx5day)
1882	37.6 mm (1.5 in)
1883	79.3 mm (3.1 in)
1884	68.1 mm (2.7 in)
1885	57.2 mm (2.3 in)
1886	60.9 mm (2.4 in)
1887	90.9 mm (3.6 in)
1888	76.7 mm (3.0 in)
1889	65.6 mm (2.6 in)
1890	56.2 mm (2.2 in)
1891	0.0 mm (0.00 in)
1892	n/a
1893	31.5 mm (1.2 in)
1913	71.6 mm (2.8 in)
1914	47.3 mm (1.9 in)
1915	45.7 mm (1.8 in)
1916	46.9 mm (1.8 in)
1917	55.6 mm (2.2 in)
1918	35.5 mm (1.4 in)
1919	22.8 mm (0.9 in)
1920	38.1 mm (1.5 in)
1921	40.9 mm (1.6 in)
1923	48.0 mm (1.9 in)
1924	63.5 mm (2.5 in)
1925	55.8 mm (2.2 in)
1926	n/a
1952	n/a
1953	40.2 mm (1.6 in)
1954	77.3 mm (3.0 in)
1955	89.4 mm (3.5 in)
1956	43.7 mm (1.7 in)
1957	68.9 mm (2.7 in)
1958	33.1 mm (1.3 in)
1959	53.8 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Oshawa, 1882 to 1959. The record is 39 days in 1921, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Oshawa by year
Year	Longest dry spell (CDD)
1882	16 days
1883	15 days
1884	15 days
1885	27 days
1886	18 days
1887	25 days
1888	11 days
1889	21 days
1890	15 days
1891	10 days
1892	n/a
1893	6 days
1913	16 days
1914	24 days
1915	14 days
1916	36 days
1917	20 days
1918	27 days
1919	36 days
1920	17 days
1921	39 days
1923	14 days
1924	24 days
1925	13 days
1926	n/a
1952	1 day
1953	12 days
1954	19 days
1955	15 days
1956	15 days
1957	22 days
1958	18 days
1959	16 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Oshawa standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).