Arkona Weather Records (CA006120315)

Record envelope, standing records and threshold days for Arkona (CA006120315), Ontario, Canada, with 34 years of record.

Key Facts for Arkona

Arkona (CA006120315) is a weather station in Ontario, Canada at 43.03 latitude and -81.92 longitude, 183 m (600 ft) above sea level.
The station reports from 1882 to 1915, 34 years of record.
1,464 records set at Arkona still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Arkona set a daily record snowfall of 8.4 cm (3.3 in) on 29 March 1915.

About the Station

Location: Ontario, Canada, 43.03 latitude, -81.92 longitude.
Elevation: 183 m (600 ft).
Period of record: 1882 to 1915, 34 years.
Eligible elements: tmax, tmin, 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 Arkona. 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 Arkona, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.1 C (61.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Feb	15.6 C (60.1 F)	-33.9 C (-29.0 F)	n/a	n/a
Mar	25.0 C (77.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-12.8 C (9.0 F)	n/a	n/a
May	33.3 C (91.9 F)	-6.7 C (19.9 F)	n/a	n/a
Jun	35.0 C (95.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	1.7 C (35.1 F)	n/a	n/a
Sep	34.4 C (93.9 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	21.1 C (70.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-26.7 C (-16.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Arkona still stand. 1884 holds the most, with 77.

Standing records at Arkona by the year they were set
Year set	Standing records
1882	9
1883	56
1884	77
1885	73
1886	42
1887	66
1888	65
1889	37
1890	42
1891	46
1892	41
1893	21
1894	50
1895	74
1896	60
1897	33
1898	53
1899	71
1900	46
1901	38
1902	9
1903	45
1904	44
1905	25
1906	36
1907	34
1908	33
1909	41
1910	24
1911	44
1912	38
1913	46
1914	37
1915	8

Wettest Day of Each Month

Aug: 93.0 mm (3.7 in)

The wettest day on record for each calendar month at Arkona. The most was 93.0 mm (3.7 in) on 19 August 1904.

Record daily precipitation for each month at Arkona
Month	Record daily precipitation (mm)	Date
Jan	39.9 mm (1.6 in)	12 January 1908
Feb	39.4 mm (1.6 in)	11 February 1887
Mar	36.8 mm (1.4 in)	23 March 1913
Apr	38.6 mm (1.5 in)	3 April 1885
May	54.6 mm (2.1 in)	30 May 1889
Jun	85.3 mm (3.4 in)	3 June 1892
Jul	91.4 mm (3.6 in)	3 July 1889
Aug	93.0 mm (3.7 in)	19 August 1904
Sep	59.2 mm (2.3 in)	17 September 1905
Oct	41.9 mm (1.6 in)	19 October 1890
Nov	44.5 mm (1.8 in)	22 November 1909
Dec	57.2 mm (2.3 in)	16 December 1910

Period of Record Coverage

1882 to 1915

34 years of record at Arkona, 1882 to 1915. 4 years have data for under 90 percent of days and are left out of rankings: 1882, 1893, 1902, 1915.

Days with data per year at Arkona
Year	Days with data	Share of year	Complete
1882	122	33%	No
1883	359	98%	Yes
1884	348	95%	Yes
1885	364	100%	Yes
1886	364	100%	Yes
1887	364	100%	Yes
1888	366	100%	Yes
1889	365	100%	Yes
1890	364	100%	Yes
1891	365	100%	Yes
1892	366	100%	Yes
1893	149	41%	No
1894	364	100%	Yes
1895	365	100%	Yes
1896	366	100%	Yes
1897	365	100%	Yes
1898	364	100%	Yes
1899	365	100%	Yes
1900	365	100%	Yes
1901	365	100%	Yes
1902	120	33%	No
1903	365	100%	Yes
1904	364	99%	Yes
1905	365	100%	Yes
1906	365	100%	Yes
1907	363	99%	Yes
1908	366	100%	Yes
1909	365	100%	Yes
1910	365	100%	Yes
1911	365	100%	Yes
1912	365	100%	Yes
1913	362	99%	Yes
1914	365	100%	Yes
1915	90	25%	No

Latest Records

Latest records at Arkona
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 March 1915	Arkona, CA	daily snowfall	8.4 cm (3.3 in)	2.6 cm (1.0 in)	24 years	15 of 100 (Routine)
23 February 1915	Arkona, CA	daily rain	24.6 mm (1.0 in)	9.4 mm (0.37 in)	21 years	20 of 100 (Routine)
23 February 1915	Arkona, CA	daily high min	2.8 C (37.0 F)	3.9 C (7.0 F)	5 years	9 of 100 (Routine)
22 February 1915	Arkona, CA	daily high max	6.7 C (44.1 F)	2.8 C (5.0 F)	26 years	15 of 100 (Routine)
21 February 1915	Arkona, CA	daily high max	9.4 C (48.9 F)	5.0 C (9.0 F)	15 years	14 of 100 (Routine)
15 February 1915	Arkona, CA	daily high min	1.7 C (35.1 F)	1.7 C (3.1 F)	27 years	13 of 100 (Routine)
14 February 1915	Arkona, CA	daily high max	8.3 C (46.9 F)	3.9 C (7.0 F)	21 years	15 of 100 (Routine)
14 February 1915	Arkona, CA	daily high min	3.3 C (37.9 F)	3.3 C (5.9 F)	28 years	15 of 100 (Routine)
5 February 1915	Arkona, CA	daily rain	15.2 mm (0.6 in)	0.5 mm (0.02 in)	7 years	5 of 100 (Routine)
30 January 1915	Arkona, CA	monthly low min (Tie)	-30.0 C (-22.0 F)	tie	22 years	4 of 100 (Routine)
29 January 1915	Arkona, CA	daily low max (Tie)	-13.3 C (8.1 F)	tie	29 years	2 of 100 (Routine)
20 January 1915	Arkona, CA	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	11 years	10 of 100 (Routine)
17 January 1915	Arkona, CA	daily high min (Tie)	4.4 C (39.9 F)	tie	1 year	0 of 100 (Routine)
1 January 1915	Arkona, CA	daily low min	-17.8 C (0.0 F)	2.2 C (4.0 F)	15 years	10 of 100 (Routine)
21 November 1914	Arkona, CA	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	31 years	14 of 100 (Routine)
15 November 1914	Arkona, CA	daily rain	14.0 mm (0.6 in)	3.8 mm (0.15 in)	12 years	10 of 100 (Routine)
27 October 1914	Arkona, CA	daily rain	33.0 mm (1.3 in)	12.9 mm (0.5 in)	14 years	23 of 100 (Routine)
27 October 1914	Arkona, CA	monthly snowfall	33.0 cm (13.0 in)	4.3 cm (1.7 in)	8 years	23 of 100 (Routine)
9 October 1914	Arkona, CA	daily rain	20.3 mm (0.8 in)	5.8 mm (0.23 in)	8 years	12 of 100 (Routine)
6 September 1914	Arkona, CA	daily rain	20.3 mm (0.8 in)	2.8 mm (0.11 in)	7 years	7 of 100 (Routine)

Climate Trend

28 complete years, 1883 to 1914

One stripe for each of 28 complete years at Arkona, 1883 to 1914. Blue stripes are years cooler than the station's own mean of 7.2 C (45.0 F); red stripes are warmer. The coolest year was 1885, at 5.2 C (41.3 F), and the warmest was 1894, at 8.4 C (47.2 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Arkona as warming stripes, 1883 to 1914
Year	Annual mean temperature	Difference from the station mean
1883	5.9 C	-1.29 C
1885	5.2 C	-2.05 C
1886	6.7 C	-0.52 C
1887	7.1 C	-0.14 C
1888	6.0 C	-1.19 C
1889	7.3 C	+0.12 C
1890	7.4 C	+0.18 C
1891	7.6 C	+0.41 C
1892	6.9 C	-0.33 C
1894	8.4 C	+1.22 C
1895	6.9 C	-0.35 C
1896	8.0 C	+0.76 C
1897	7.9 C	+0.65 C
1898	8.4 C	+1.19 C
1899	8.0 C	+0.82 C
1901	7.5 C	+0.27 C
1903	7.3 C	+0.06 C
1904	5.7 C	-1.50 C
1905	6.8 C	-0.44 C
1906	8.0 C	+0.78 C
1907	6.3 C	-0.89 C
1908	7.9 C	+0.71 C
1909	7.5 C	+0.29 C
1910	7.2 C	+0.01 C
1911	8.2 C	+0.97 C
1912	6.5 C	-0.76 C
1913	8.2 C	+0.97 C
1914	7.4 C	+0.17 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1882 to 1915

Yearly extremes at Arkona: 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	33.6 C (92.5 F)	34
Coldest night (TNn)	-33.9 C (-29.0 F)	1885	-26.1 C (-15.0 F)	34
Wettest day (Rx1day)	93.0 mm (3.7 in)	1904	41.8 mm (1.6 in)	34
Wettest five days (Rx5day)	131.1 mm (5.2 in)	1889	69.9 mm (2.8 in)	34
Longest dry spell (CDD)	41 days	1908	17 days	34

Hottest day (TXx)

The hottest day of the year at Arkona, 1882 to 1915. The record is 37.8 C (100.0 F) in 1911, marked on the chart; the median year is 33.6 C (92.5 F).

Hottest day (TXx) at Arkona by year
Year	Hottest day (TXx)
1882	29.4 C (84.9 F)
1883	32.2 C (90.0 F)
1884	35.0 C (95.0 F)
1885	32.2 C (90.0 F)
1886	34.4 C (93.9 F)
1887	36.7 C (98.1 F)
1888	33.9 C (93.0 F)
1889	32.2 C (90.0 F)
1890	35.0 C (95.0 F)
1891	34.4 C (93.9 F)
1892	33.9 C (93.0 F)
1893	20.6 C (69.1 F)
1894	36.1 C (97.0 F)
1895	33.9 C (93.0 F)
1896	33.9 C (93.0 F)
1897	35.0 C (95.0 F)
1898	34.4 C (93.9 F)
1899	35.6 C (96.1 F)
1900	36.7 C (98.1 F)
1901	37.2 C (99.0 F)
1902	22.2 C (72.0 F)
1903	31.1 C (88.0 F)
1904	32.8 C (91.0 F)
1905	31.7 C (89.1 F)
1906	32.2 C (90.0 F)
1907	30.0 C (86.0 F)
1908	33.3 C (91.9 F)
1909	32.8 C (91.0 F)
1910	33.3 C (91.9 F)
1911	37.8 C (100.0 F)
1912	31.7 C (89.1 F)
1913	32.8 C (91.0 F)
1914	33.9 C (93.0 F)
1915	9.4 C (48.9 F)

Coldest night (TNn)

The coldest night of the year at Arkona, 1882 to 1915. The record is -33.9 C (-29.0 F) in 1885, marked on the chart; the median year is -26.1 C (-15.0 F).

Coldest night (TNn) at Arkona by year
Year	Coldest night (TNn)
1882	-21.7 C (-7.1 F)
1883	-27.2 C (-17.0 F)
1884	-30.0 C (-22.0 F)
1885	-33.9 C (-29.0 F)
1886	-30.6 C (-23.1 F)
1887	-28.9 C (-20.0 F)
1888	-30.6 C (-23.1 F)
1889	-31.1 C (-24.0 F)
1890	-22.8 C (-9.0 F)
1891	-18.9 C (-2.0 F)
1892	-29.4 C (-20.9 F)
1893	-30.0 C (-22.0 F)
1894	-21.1 C (-6.0 F)
1895	-31.1 C (-24.0 F)
1896	-26.1 C (-15.0 F)
1897	-25.0 C (-13.0 F)
1898	-23.9 C (-11.0 F)
1899	-31.1 C (-24.0 F)
1900	-28.3 C (-18.9 F)
1901	-25.6 C (-14.1 F)
1902	-22.2 C (-8.0 F)
1903	-22.8 C (-9.0 F)
1904	-26.7 C (-16.1 F)
1905	-27.2 C (-17.0 F)
1906	-24.4 C (-11.9 F)
1907	-25.0 C (-13.0 F)
1908	-26.1 C (-15.0 F)
1909	-24.4 C (-11.9 F)
1910	-26.1 C (-15.0 F)
1911	-17.8 C (0.0 F)
1912	-31.1 C (-24.0 F)
1913	-23.3 C (-9.9 F)
1914	-25.6 C (-14.1 F)
1915	-30.0 C (-22.0 F)

Wettest day (Rx1day)

The wettest day of the year at Arkona, 1882 to 1915. The record is 93.0 mm (3.7 in) in 1904, marked on the chart; the median year is 41.8 mm (1.6 in).

Wettest day (Rx1day) at Arkona by year
Year	Wettest day (Rx1day)
1882	58.7 mm (2.3 in)
1883	33.0 mm (1.3 in)
1884	27.4 mm (1.1 in)
1885	53.3 mm (2.1 in)
1886	38.4 mm (1.5 in)
1887	41.9 mm (1.6 in)
1888	36.3 mm (1.4 in)
1889	91.4 mm (3.6 in)
1890	41.9 mm (1.6 in)
1891	36.8 mm (1.4 in)
1892	85.3 mm (3.4 in)
1893	36.8 mm (1.4 in)
1894	50.3 mm (2.0 in)
1895	27.4 mm (1.1 in)
1896	47.2 mm (1.9 in)
1897	56.4 mm (2.2 in)
1898	39.6 mm (1.6 in)
1899	35.6 mm (1.4 in)
1900	36.1 mm (1.4 in)
1901	41.4 mm (1.6 in)
1902	27.9 mm (1.1 in)
1903	35.1 mm (1.4 in)
1904	93.0 mm (3.7 in)
1905	59.2 mm (2.3 in)
1906	49.3 mm (1.9 in)
1907	56.4 mm (2.2 in)
1908	41.1 mm (1.6 in)
1909	44.5 mm (1.8 in)
1910	84.6 mm (3.3 in)
1911	33.0 mm (1.3 in)
1912	41.7 mm (1.6 in)
1913	54.6 mm (2.1 in)
1914	57.2 mm (2.3 in)
1915	24.6 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Arkona, 1882 to 1915. The record is 131.1 mm (5.2 in) in 1889, marked on the chart; the median year is 69.9 mm (2.8 in).

Wettest five days (Rx5day) at Arkona by year
Year	Wettest five days (Rx5day)
1882	88.2 mm (3.5 in)
1883	70.9 mm (2.8 in)
1884	48.2 mm (1.9 in)
1885	72.1 mm (2.8 in)
1886	52.6 mm (2.1 in)
1887	84.2 mm (3.3 in)
1888	54.7 mm (2.2 in)
1889	131.1 mm (5.2 in)
1890	61.2 mm (2.4 in)
1891	85.9 mm (3.4 in)
1892	105.2 mm (4.1 in)
1893	53.8 mm (2.1 in)
1894	98.8 mm (3.9 in)
1895	53.4 mm (2.1 in)
1896	82.8 mm (3.3 in)
1897	75.7 mm (3.0 in)
1898	109.9 mm (4.3 in)
1899	51.4 mm (2.0 in)
1900	56.2 mm (2.2 in)
1901	55.9 mm (2.2 in)
1902	52.3 mm (2.1 in)
1903	65.8 mm (2.6 in)
1904	108.2 mm (4.3 in)
1905	96.3 mm (3.8 in)
1906	65.5 mm (2.6 in)
1907	74.9 mm (2.9 in)
1908	62.7 mm (2.5 in)
1909	68.9 mm (2.7 in)
1910	95.0 mm (3.7 in)
1911	60.4 mm (2.4 in)
1912	59.2 mm (2.3 in)
1913	109.5 mm (4.3 in)
1914	104.7 mm (4.1 in)
1915	29.6 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Arkona, 1882 to 1915. The record is 41 days in 1908, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Arkona by year
Year	Longest dry spell (CDD)
1882	18 days
1883	11 days
1884	18 days
1885	10 days
1886	17 days
1887	17 days
1888	15 days
1889	26 days
1890	14 days
1891	26 days
1892	13 days
1893	7 days
1894	33 days
1895	17 days
1896	13 days
1897	20 days
1898	25 days
1899	20 days
1900	17 days
1901	22 days
1902	8 days
1903	13 days
1904	18 days
1905	18 days
1906	24 days
1907	14 days
1908	41 days
1909	12 days
1910	17 days
1911	17 days
1912	14 days
1913	15 days
1914	15 days
1915	15 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.

Frost Dates and Growing Season

28 years with a frost

Across 28 years with a frost, the median last spring frost at Arkona falls on 15 May and the median first autumn frost on 8 October, which leaves a median of 149 days between them.

Fitted over all years, the growing season changes by +9.6 days per decade at this station.

Frost dates and growing season at Arkona
Measure	Median, all years	Earliest period	Recent period (1883 to 1914)	Recent against earliest	Fitted trend
Last spring frost	15 May	n/a	15 May	n/a	-3.5 days per decade
First autumn frost	8 October	n/a	8 October	n/a	+6.1 days per decade
Growing days	149 days	n/a	149 days	n/a	+9.6 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

30 years, 1883 to 1914

A day with at least 44.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 123.5 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Arkona: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.1 mm (1.7 in)
5 years	59.1 mm (2.3 in)
10 years	71.1 mm (2.8 in)
25 years	89.3 mm (3.5 in)
50 years	105.2 mm (4.1 in)	Longer than the 30 years of record
100 years	123.5 mm (4.9 in)	Longer than the 30 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, 30 years of values from 1883 to 1914.

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: 93.0 mm (3.7 in) in 1904; 91.4 mm (3.6 in) in 1889; 85.3 mm (3.4 in) in 1892.

Download the Data

Data for Arkona standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Arkona 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).