Aurora Weather Records (CA006150395)

Record envelope, standing records and threshold days for Aurora (CA006150395), Ontario, Canada, with 37 years of record.

Key Facts for Aurora

Aurora (CA006150395) is a weather station in Ontario, Canada at 43.95 latitude and -79.40 longitude, 270 m (886 ft) above sea level.
The station reports from 1883 to 1919, 37 years of record.
1,464 records set at Aurora still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Aurora set a daily record snowfall of 7.6 cm (3.0 in) on 28 March 1919.

About the Station

Location: Ontario, Canada, 43.95 latitude, -79.40 longitude.
Elevation: 270 m (886 ft).
Period of record: 1883 to 1919, 37 years.
Eligible elements: prcp, snow.

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 Aurora. 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 Aurora, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.1 C (52.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Feb	7.8 C (46.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Mar	23.3 C (73.9 F)	-26.1 C (-15.0 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-15.0 C (5.0 F)	n/a	n/a
May	33.9 C (93.0 F)	-9.4 C (15.1 F)	n/a	n/a
Jun	33.3 C (91.9 F)	0.0 C (32.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	4.4 C (39.9 F)	n/a	n/a
Aug	35.0 C (95.0 F)	1.1 C (34.0 F)	n/a	n/a
Sep	33.3 C (91.9 F)	-3.3 C (26.1 F)	n/a	n/a
Oct	27.2 C (81.0 F)	-8.3 C (17.1 F)	n/a	n/a
Nov	18.3 C (64.9 F)	-17.8 C (0.0 F)	n/a	n/a
Dec	12.2 C (54.0 F)	-31.1 C (-24.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Aurora still stand. 1913 holds the most, with 156.

Wettest Day of Each Month

May: 123.4 mm (4.9 in)

The wettest day on record for each calendar month at Aurora. The most was 123.4 mm (4.9 in) on 21 May 1894.

Record daily precipitation for each month at Aurora
Month	Record daily precipitation (mm)	Date
Jan	40.9 mm (1.6 in)	24 January 1896
Feb	46.0 mm (1.8 in)	15 February 1908
Mar	34.5 mm (1.4 in)	23 March 1913
Apr	52.3 mm (2.1 in)	19 April 1910
May	123.4 mm (4.9 in)	21 May 1894
Jun	83.6 mm (3.3 in)	5 June 1890
Jul	68.3 mm (2.7 in)	4 July 1906
Aug	73.2 mm (2.9 in)	15 August 1905
Sep	62.5 mm (2.5 in)	23 September 1898
Oct	54.1 mm (2.1 in)	14 October 1893
Nov	51.8 mm (2.0 in)	22 November 1909
Dec	33.8 mm (1.3 in)	24 December 1889

Period of Record Coverage

1908 to 1919

12 years of record at Aurora, 1908 to 1919. 2 years have data for under 90 percent of days and are left out of rankings: 1908, 1919.

Days with data per year at Aurora
Year	Days with data	Share of year	Complete
1908	183	50%	No
1909	365	100%	Yes
1910	365	100%	Yes
1911	365	100%	Yes
1912	345	94%	Yes
1913	353	97%	Yes
1914	336	92%	Yes
1915	335	92%	Yes
1916	337	92%	Yes
1917	362	99%	Yes
1918	364	100%	Yes
1919	132	36%	No

Latest Records

Latest records at Aurora
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 March 1919	Aurora, CA	daily snowfall	7.6 cm (3.0 in)	4.3 cm (1.7 in)	19 years	18 of 100 (Routine)
16 March 1919	Aurora, CA	daily rain	30.5 mm (1.2 in)	22.9 mm (0.9 in)	9 years	45 of 100 (Notable)
31 December 1918	Aurora, CA	daily rain (Tie)	5.1 mm (0.20 in)	tie	0 years	0 of 100 (Routine)
31 December 1918	Aurora, CA	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	0 years	0 of 100 (Routine)
6 December 1918	Aurora, CA	daily snowfall (Tie)	10.2 cm (4.0 in)	tie	26 years	2 of 100 (Routine)
1 December 1918	Aurora, CA	daily snowfall	10.2 cm (4.0 in)	3.8 cm (1.5 in)	7 years	14 of 100 (Routine)
5 September 1918	Aurora, CA	daily rain	35.6 mm (1.4 in)	11.0 mm (0.4 in)	11 years	17 of 100 (Routine)
10 March 1918	Aurora, CA	daily snowfall (Tie)	7.6 cm (3.0 in)	tie	1 year	0 of 100 (Routine)
28 February 1918	Aurora, CA	daily snowfall	7.6 cm (3.0 in)	0.5 cm (0.2 in)	17 years	8 of 100 (Routine)
28 January 1918	Aurora, CA	daily snowfall	7.6 cm (3.0 in)	3.0 cm (1.2 in)	20 years	14 of 100 (Routine)
7 January 1918	Aurora, CA	daily snowfall	20.3 cm (8.0 in)	5.6 cm (2.2 in)	12 years	17 of 100 (Routine)
7 January 1918	Aurora, CA	daily rain	20.3 mm (0.8 in)	5.6 mm (0.22 in)	12 years	15 of 100 (Routine)
31 December 1917	Aurora, CA	daily snowfall	5.1 cm (2.0 in)	1.8 cm (0.7 in)	8 years	9 of 100 (Routine)
31 December 1917	Aurora, CA	daily rain	5.1 mm (0.20 in)	1.8 mm (0.07 in)	8 years	8 of 100 (Routine)
8 December 1917	Aurora, CA	daily snowfall	15.2 cm (6.0 in)	6.3 cm (2.5 in)	20 years	24 of 100 (Routine)
8 December 1917	Aurora, CA	daily rain	15.2 mm (0.6 in)	4.3 mm (0.17 in)	22 years	16 of 100 (Routine)
22 November 1917	Aurora, CA	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	26 years	16 of 100 (Routine)
25 October 1917	Aurora, CA	daily rain	10.2 mm (0.4 in)	7.7 mm (0.30 in)	8 years	13 of 100 (Routine)
1 July 1917	Aurora, CA	daily rain	33.0 mm (1.3 in)	21.8 mm (0.9 in)	25 years	29 of 100 (Routine)
14 June 1917	Aurora, CA	daily rain	28.7 mm (1.1 in)	25.7 mm (1.0 in)	12 years	30 of 100 (Routine)

Extremes by Year

1883 to 1919

Yearly extremes at Aurora: 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)	1911	33.3 C (91.9 F)	12
Coldest night (TNn)	-34.4 C (-29.9 F)	1914	-28.3 C (-18.9 F)	12
Wettest day (Rx1day)	123.4 mm (4.9 in)	1894	44.5 mm (1.8 in)	37
Wettest five days (Rx5day)	151.6 mm (6.0 in)	1894	61.7 mm (2.4 in)	37
Longest dry spell (CDD)	32 days	1891	18 days	37

Hottest day (TXx)

The hottest day of the year at Aurora, 1883 to 1919. The record is 37.8 C (100.0 F) in 1911, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Aurora by year
Year	Hottest day (TXx)
1883	n/a
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	33.3 C (91.9 F)
1909	33.9 C (93.0 F)
1910	34.4 C (93.9 F)
1911	37.8 C (100.0 F)
1912	33.3 C (91.9 F)
1913	33.3 C (91.9 F)
1914	32.8 C (91.0 F)
1915	30.0 C (86.0 F)
1916	35.0 C (95.0 F)
1917	33.3 C (91.9 F)
1918	35.0 C (95.0 F)
1919	22.2 C (72.0 F)

Coldest night (TNn)

The coldest night of the year at Aurora, 1883 to 1919. The record is -34.4 C (-29.9 F) in 1914, marked on the chart; the median year is -28.3 C (-18.9 F).

Coldest night (TNn) at Aurora by year
Year	Coldest night (TNn)
1883	n/a
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	-21.7 C (-7.1 F)
1909	-26.1 C (-15.0 F)
1910	-29.4 C (-20.9 F)
1911	-26.7 C (-16.1 F)
1912	-32.2 C (-26.0 F)
1913	-23.9 C (-11.0 F)
1914	-34.4 C (-29.9 F)
1915	-27.2 C (-17.0 F)
1916	-30.6 C (-23.1 F)
1917	-31.1 C (-24.0 F)
1918	-32.8 C (-27.0 F)
1919	-22.8 C (-9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Aurora, 1883 to 1919. The record is 123.4 mm (4.9 in) in 1894, marked on the chart; the median year is 44.5 mm (1.8 in).

Wettest day (Rx1day) at Aurora by year
Year	Wettest day (Rx1day)
1883	32.8 mm (1.3 in)
1884	47.8 mm (1.9 in)
1885	47.0 mm (1.9 in)
1886	22.9 mm (0.9 in)
1887	36.8 mm (1.4 in)
1888	38.6 mm (1.5 in)
1889	35.8 mm (1.4 in)
1890	83.6 mm (3.3 in)
1891	48.8 mm (1.9 in)
1892	38.1 mm (1.5 in)
1893	58.4 mm (2.3 in)
1894	123.4 mm (4.9 in)
1895	31.8 mm (1.3 in)
1896	44.5 mm (1.8 in)
1897	67.8 mm (2.7 in)
1898	62.5 mm (2.5 in)
1899	38.4 mm (1.5 in)
1900	32.3 mm (1.3 in)
1901	43.2 mm (1.7 in)
1902	30.0 mm (1.2 in)
1903	58.2 mm (2.3 in)
1904	47.5 mm (1.9 in)
1905	73.2 mm (2.9 in)
1906	68.3 mm (2.7 in)
1907	37.8 mm (1.5 in)
1908	47.0 mm (1.9 in)
1909	68.3 mm (2.7 in)
1910	52.3 mm (2.1 in)
1911	35.3 mm (1.4 in)
1912	36.8 mm (1.4 in)
1913	62.5 mm (2.5 in)
1914	45.7 mm (1.8 in)
1915	53.3 mm (2.1 in)
1916	33.5 mm (1.3 in)
1917	33.0 mm (1.3 in)
1918	35.6 mm (1.4 in)
1919	30.5 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Aurora, 1883 to 1919. The record is 151.6 mm (6.0 in) in 1894, marked on the chart; the median year is 61.7 mm (2.4 in).

Wettest five days (Rx5day) at Aurora by year
Year	Wettest five days (Rx5day)
1883	50.0 mm (2.0 in)
1884	86.6 mm (3.4 in)
1885	55.9 mm (2.2 in)
1886	49.7 mm (2.0 in)
1887	51.4 mm (2.0 in)
1888	54.1 mm (2.1 in)
1889	84.8 mm (3.3 in)
1890	99.9 mm (3.9 in)
1891	53.9 mm (2.1 in)
1892	66.3 mm (2.6 in)
1893	61.7 mm (2.4 in)
1894	151.6 mm (6.0 in)
1895	41.9 mm (1.6 in)
1896	75.6 mm (3.0 in)
1897	72.6 mm (2.9 in)
1898	72.7 mm (2.9 in)
1899	45.5 mm (1.8 in)
1900	35.6 mm (1.4 in)
1901	66.3 mm (2.6 in)
1902	50.6 mm (2.0 in)
1903	64.8 mm (2.6 in)
1904	92.5 mm (3.6 in)
1905	92.5 mm (3.6 in)
1906	89.7 mm (3.5 in)
1907	52.3 mm (2.1 in)
1908	53.4 mm (2.1 in)
1909	71.6 mm (2.8 in)
1910	59.0 mm (2.3 in)
1911	41.0 mm (1.6 in)
1912	52.6 mm (2.1 in)
1913	72.9 mm (2.9 in)
1914	66.0 mm (2.6 in)
1915	93.2 mm (3.7 in)
1916	65.6 mm (2.6 in)
1917	40.6 mm (1.6 in)
1918	41.6 mm (1.6 in)
1919	42.0 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Aurora, 1883 to 1919. The record is 32 days in 1891, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Aurora by year
Year	Longest dry spell (CDD)
1883	15 days
1884	16 days
1885	18 days
1886	17 days
1887	19 days
1888	19 days
1889	20 days
1890	15 days
1891	32 days
1892	12 days
1893	11 days
1894	26 days
1895	19 days
1896	15 days
1897	16 days
1898	19 days
1899	22 days
1900	21 days
1901	17 days
1902	15 days
1903	14 days
1904	32 days
1905	12 days
1906	11 days
1907	16 days
1908	26 days
1909	14 days
1910	32 days
1911	27 days
1912	12 days
1913	14 days
1914	21 days
1915	21 days
1916	22 days
1917	23 days
1918	17 days
1919	23 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.

Rainfall Return Levels

34 years, 1885 to 1918

A day with at least 44.2 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 125.5 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Aurora: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.2 mm (1.7 in)
5 years	60.1 mm (2.4 in)
10 years	72.6 mm (2.9 in)
25 years	91.2 mm (3.6 in)
50 years	107.2 mm (4.2 in)	Longer than the 34 years of record
100 years	125.5 mm (4.9 in)	Longer than the 34 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 34 years of values from 1885 to 1918.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 123.4 mm (4.9 in) in 1894; 83.6 mm (3.3 in) in 1890; 73.2 mm (2.9 in) in 1905.

Download the Data

Data for Aurora standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Aurora 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). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).