Chapleau 2 Weather Records (CA006061359)

Record envelope, standing records and threshold days for Chapleau 2 (CA006061359), Ontario, Canada, with 81 years of record.

Key Facts for Chapleau 2

Chapleau 2 (CA006061359) is a weather station in Ontario, Canada at 47.83 latitude and -83.43 longitude, 432 m (1,417 ft) above sea level.
The station reports from 1886 to 1966, 81 years of record.
1,464 records set at Chapleau 2 still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Chapleau 2 set a daily record low minimum temperature of -13.3 C (8.1 F) on 30 October 1966.

About the Station

Location: Ontario, Canada, 47.83 latitude, -83.43 longitude.
Elevation: 432 m (1,417 ft).
Period of record: 1886 to 1966, 81 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 Chapleau 2. 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 Chapleau 2, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	7.8 C (46.0 F)	-46.7 C (-52.1 F)	n/a	n/a
Feb	14.4 C (57.9 F)	-46.7 C (-52.1 F)	n/a	n/a
Mar	23.3 C (73.9 F)	-43.9 C (-47.0 F)	n/a	n/a
Apr	27.8 C (82.0 F)	-33.3 C (-27.9 F)	n/a	n/a
May	33.9 C (93.0 F)	-13.3 C (8.1 F)	n/a	n/a
Jun	39.4 C (102.9 F)	-7.2 C (19.0 F)	n/a	n/a
Jul	39.4 C (102.9 F)	-0.6 C (30.9 F)	n/a	n/a
Aug	35.6 C (96.1 F)	-7.8 C (18.0 F)	n/a	n/a
Sep	35.6 C (96.1 F)	-10.0 C (14.0 F)	n/a	n/a
Oct	27.2 C (81.0 F)	-18.9 C (-2.0 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-37.2 C (-35.0 F)	n/a	n/a
Dec	11.7 C (53.1 F)	-47.2 C (-53.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chapleau 2 still stand. 1915 holds the most, with 66.

Standing records at Chapleau 2 by the year they were set
Year set	Standing records
1913	18
1914	40
1915	66
1916	30
1917	53
1918	23
1919	39
1920	20
1921	26
1922	26
1923	44
1924	20
1925	19
1926	23
1928	27
1929	24
1930	46
1931	33
1932	36
1933	35
1934	26
1935	20
1936	37
1937	13
1938	39
1939	35
1940	24
1941	21
1942	38
1943	24
1944	36
1945	37
1946	37
1947	18
1948	38
1949	20
1950	29
1951	28
1952	16
1953	24
1954	15
1955	17
1956	24
1957	21
1958	32
1959	18
1960	10
1961	16
1962	21
1963	21
1964	30
1965	18
1966	13

All-Time Record Progression

1 new records

1 all-time records were set at Chapleau 2 between 27 January 1952 and 27 January 1952. Each dot is a new record.

Wettest Day of Each Month

Aug: 94.2 mm (3.7 in)

The wettest day on record for each calendar month at Chapleau 2. The most was 94.2 mm (3.7 in) on 20 August 1939.

Record daily precipitation for each month at Chapleau 2
Month	Record daily precipitation (mm)	Date
Jan	52.1 mm (2.1 in)	14 January 1921
Feb	35.6 mm (1.4 in)	14 February 1918
Mar	38.1 mm (1.5 in)	16 March 1942
Apr	48.3 mm (1.9 in)	20 April 1948
May	51.1 mm (2.0 in)	31 May 1918
Jun	78.7 mm (3.1 in)	18 June 1915
Jul	67.3 mm (2.6 in)	7 July 1939
Aug	94.2 mm (3.7 in)	20 August 1939
Sep	63.2 mm (2.5 in)	25 September 1915
Oct	55.1 mm (2.2 in)	14 October 1966
Nov	61.0 mm (2.4 in)	29 November 1919
Dec	30.5 mm (1.2 in)	29 December 1889

Period of Record Coverage

1913 to 1966

53 years of record at Chapleau 2, 1913 to 1966. 12 years have data for under 90 percent of days and are left out of rankings: 1913, 1914, 1915, 1916, 1919, 1920, 1921, 1922 and others.

Days with data per year at Chapleau 2
Year	Days with data	Share of year	Complete
1913	143	39%	No
1914	328	90%	No
1915	303	83%	No
1916	302	83%	No
1917	364	100%	Yes
1918	334	92%	Yes
1919	298	82%	No
1920	151	41%	No
1921	261	72%	No
1922	301	82%	No
1923	362	99%	Yes
1924	362	99%	Yes
1925	356	98%	Yes
1926	365	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	365	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	337	92%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	22	6%	No
1948	108	30%	No
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	334	92%	Yes
1955	334	92%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	334	92%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	283	78%	No
1966	303	83%	No

Latest Records

Latest records at Chapleau 2
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 October 1966	Chapleau 2, CA	daily low min	-13.3 C (8.1 F)	2.2 C (4.0 F)	37 years	20 of 100 (Routine)
16 October 1966	Chapleau 2, CA	daily low max	-1.1 C (30.0 F)	0.5 C (0.9 F)	49 years	19 of 100 (Routine)
14 October 1966	Chapleau 2, CA	monthly rain	55.1 mm (2.2 in)	8.9 mm (0.35 in)	52 years	46 of 100 (Notable)
29 September 1966	Chapleau 2, CA	daily rain	19.8 mm (0.8 in)	4.8 mm (0.19 in)	4 years	14 of 100 (Routine)
8 August 1966	Chapleau 2, CA	daily rain	14.2 mm (0.6 in)	3.5 mm (0.14 in)	49 years	20 of 100 (Routine)
31 July 1966	Chapleau 2, CA	daily high min (Tie)	15.6 C (60.1 F)	tie	52 years	5 of 100 (Routine)
22 July 1966	Chapleau 2, CA	daily low max (Tie)	18.9 C (66.0 F)	tie	52 years	5 of 100 (Routine)
3 July 1966	Chapleau 2, CA	daily high min (Tie)	17.8 C (64.0 F)	tie	52 years	5 of 100 (Routine)
26 June 1966	Chapleau 2, CA	daily high min	21.7 C (71.1 F)	1.1 C (2.0 F)	24 years	14 of 100 (Routine)
24 June 1966	Chapleau 2, CA	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	23 years	14 of 100 (Routine)
10 June 1966	Chapleau 2, CA	daily low min	-0.6 C (30.9 F)	0.6 C (1.1 F)	51 years	21 of 100 (Routine)
26 May 1966	Chapleau 2, CA	daily rain	19.3 mm (0.8 in)	2.3 mm (0.09 in)	16 years	15 of 100 (Routine)
8 May 1966	Chapleau 2, CA	daily low max	0.0 C (32.0 F)	1.1 C (2.0 F)	5 years	7 of 100 (Routine)
25 March 1966	Chapleau 2, CA	daily low max (Tie)	-12.8 C (9.0 F)	tie	43 years	4 of 100 (Routine)
24 March 1966	Chapleau 2, CA	daily low max	-14.4 C (6.1 F)	1.6 C (2.9 F)	5 years	8 of 100 (Routine)
18 March 1966	Chapleau 2, CA	daily high min	3.3 C (37.9 F)	1.1 C (2.0 F)	47 years	20 of 100 (Routine)
9 March 1966	Chapleau 2, CA	daily high min	-5.0 C (23.0 F)	1.1 C (2.0 F)	29 years	14 of 100 (Routine)
1 March 1966	Chapleau 2, CA	daily high min	-2.8 C (27.0 F)	2.2 C (4.0 F)	32 years	16 of 100 (Routine)
18 February 1966	Chapleau 2, CA	daily low max	-21.7 C (-7.1 F)	0.6 C (1.1 F)	30 years	14 of 100 (Routine)
18 February 1966	Chapleau 2, CA	daily low min (Tie)	-41.7 C (-43.1 F)	tie	22 years	2 of 100 (Routine)

Climate Trend

29 complete years, 1923 to 1964

One stripe for each of 29 complete years at Chapleau 2, 1923 to 1964. Blue stripes are years cooler than the station's own mean of 1.2 C (34.1 F); red stripes are warmer. The coolest year was 1950, at -0.3 C (31.5 F), and the warmest was 1931, at 4.2 C (39.6 F). The strongest colour marks a difference of 3.1 C (5.6 F).

Annual mean temperature at Chapleau 2 as warming stripes, 1923 to 1964
Year	Annual mean temperature	Difference from the station mean
1923	-0.2 C	-1.43 C
1924	0.1 C	-1.04 C
1925	1.6 C	+0.43 C
1926	0.5 C	-0.71 C
1928	1.5 C	+0.27 C
1929	0.4 C	-0.74 C
1930	2.5 C	+1.29 C
1931	4.2 C	+3.03 C
1932	2.2 C	+1.01 C
1933	1.5 C	+0.28 C
1934	1.2 C	-0.01 C
1935	0.8 C	-0.36 C
1936	0.6 C	-0.54 C
1937	2.0 C	+0.81 C
1939	0.0 C	-1.16 C
1940	0.5 C	-0.64 C
1941	1.2 C	+0.04 C
1942	0.8 C	-0.39 C
1945	0.0 C	-1.14 C
1949	1.6 C	+0.39 C
1950	-0.3 C	-1.45 C
1952	2.0 C	+0.80 C
1953	2.4 C	+1.18 C
1956	0.7 C	-0.53 C
1958	1.0 C	-0.19 C
1959	1.1 C	-0.09 C
1960	1.3 C	+0.07 C
1962	1.3 C	+0.15 C
1964	1.9 C	+0.71 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

1886 to 1966

Yearly extremes at Chapleau 2: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	1931	32.8 C (91.0 F)	53
Coldest night (TNn)	-47.2 C (-53.0 F)	1943	-42.8 C (-45.0 F)	53
Wettest day (Rx1day)	94.2 mm (3.7 in)	1939	39.0 mm (1.5 in)	58
Wettest five days (Rx5day)	143.7 mm (5.7 in)	1939	59.4 mm (2.3 in)	58
Longest dry spell (CDD)	35 days	1916	18 days	58

Hottest day (TXx)

The hottest day of the year at Chapleau 2, 1886 to 1966. The record is 39.4 C (102.9 F) in 1931, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Chapleau 2 by year
Year	Hottest day (TXx)
1886	n/a
1889	n/a
1890	n/a
1891	n/a
1897	n/a
1913	31.7 C (89.1 F)
1914	33.9 C (93.0 F)
1915	28.9 C (84.0 F)
1916	35.0 C (95.0 F)
1917	34.4 C (93.9 F)
1918	32.8 C (91.0 F)
1919	35.0 C (95.0 F)
1920	25.6 C (78.1 F)
1921	33.9 C (93.0 F)
1922	29.4 C (84.9 F)
1923	29.4 C (84.9 F)
1924	30.0 C (86.0 F)
1925	32.8 C (91.0 F)
1926	33.3 C (91.9 F)
1928	32.8 C (91.0 F)
1929	33.9 C (93.0 F)
1930	35.6 C (96.1 F)
1931	39.4 C (102.9 F)
1932	33.3 C (91.9 F)
1933	36.1 C (97.0 F)
1934	32.8 C (91.0 F)
1935	33.9 C (93.0 F)
1936	39.4 C (102.9 F)
1937	33.3 C (91.9 F)
1938	31.7 C (89.1 F)
1939	31.7 C (89.1 F)
1940	32.8 C (91.0 F)
1941	33.3 C (91.9 F)
1942	33.9 C (93.0 F)
1943	32.8 C (91.0 F)
1944	31.7 C (89.1 F)
1945	31.1 C (88.0 F)
1946	30.0 C (86.0 F)
1947	-1.1 C (30.0 F)
1948	26.1 C (79.0 F)
1949	33.3 C (91.9 F)
1950	31.1 C (88.0 F)
1951	31.1 C (88.0 F)
1952	29.4 C (84.9 F)
1953	31.1 C (88.0 F)
1954	30.6 C (87.1 F)
1955	35.0 C (95.0 F)
1956	32.2 C (90.0 F)
1957	35.0 C (95.0 F)
1958	29.4 C (84.9 F)
1959	32.8 C (91.0 F)
1960	31.1 C (88.0 F)
1961	32.2 C (90.0 F)
1962	32.2 C (90.0 F)
1963	33.9 C (93.0 F)
1964	32.2 C (90.0 F)
1965	30.6 C (87.1 F)
1966	33.9 C (93.0 F)

Coldest night (TNn)

The coldest night of the year at Chapleau 2, 1886 to 1966. The record is -47.2 C (-53.0 F) in 1943, marked on the chart; the median year is -42.8 C (-45.0 F).

Coldest night (TNn) at Chapleau 2 by year
Year	Coldest night (TNn)
1886	n/a
1889	n/a
1890	n/a
1891	n/a
1897	n/a
1913	-27.2 C (-17.0 F)
1914	-45.0 C (-49.0 F)
1915	-27.8 C (-18.0 F)
1916	-40.0 C (-40.0 F)
1917	-43.3 C (-45.9 F)
1918	-43.3 C (-45.9 F)
1919	-42.8 C (-45.0 F)
1920	-44.4 C (-47.9 F)
1921	-35.6 C (-32.1 F)
1922	-43.9 C (-47.0 F)
1923	-46.7 C (-52.1 F)
1924	-46.7 C (-52.1 F)
1925	-42.8 C (-45.0 F)
1926	-38.9 C (-38.0 F)
1928	-45.6 C (-50.1 F)
1929	-45.0 C (-49.0 F)
1930	-43.9 C (-47.0 F)
1931	-34.4 C (-29.9 F)
1932	-38.9 C (-38.0 F)
1933	-46.1 C (-51.0 F)
1934	-45.6 C (-50.1 F)
1935	-46.7 C (-52.1 F)
1936	-40.0 C (-40.0 F)
1937	-39.4 C (-38.9 F)
1938	-43.3 C (-45.9 F)
1939	-46.7 C (-52.1 F)
1940	-44.4 C (-47.9 F)
1941	-41.7 C (-43.1 F)
1942	-46.1 C (-51.0 F)
1943	-47.2 C (-53.0 F)
1944	-41.7 C (-43.1 F)
1945	-46.1 C (-51.0 F)
1946	-40.6 C (-41.1 F)
1947	-38.3 C (-36.9 F)
1948	-46.7 C (-52.1 F)
1949	-40.0 C (-40.0 F)
1950	-43.9 C (-47.0 F)
1951	-45.0 C (-49.0 F)
1952	-41.1 C (-42.0 F)
1953	-42.2 C (-44.0 F)
1954	-40.6 C (-41.1 F)
1955	-42.8 C (-45.0 F)
1956	-38.3 C (-36.9 F)
1957	-45.0 C (-49.0 F)
1958	-41.1 C (-42.0 F)
1959	-42.8 C (-45.0 F)
1960	-42.2 C (-44.0 F)
1961	-38.9 C (-38.0 F)
1962	-44.4 C (-47.9 F)
1963	-40.0 C (-40.0 F)
1964	-41.7 C (-43.1 F)
1965	-40.0 C (-40.0 F)
1966	-41.7 C (-43.1 F)

Wettest day (Rx1day)

The wettest day of the year at Chapleau 2, 1886 to 1966. The record is 94.2 mm (3.7 in) in 1939, marked on the chart; the median year is 39.0 mm (1.5 in).

Wettest day (Rx1day) at Chapleau 2 by year
Year	Wettest day (Rx1day)
1886	17.8 mm (0.7 in)
1889	30.5 mm (1.2 in)
1890	27.9 mm (1.1 in)
1891	21.6 mm (0.9 in)
1897	15.2 mm (0.6 in)
1913	20.3 mm (0.8 in)
1914	50.8 mm (2.0 in)
1915	78.7 mm (3.1 in)
1916	48.3 mm (1.9 in)
1917	27.9 mm (1.1 in)
1918	51.1 mm (2.0 in)
1919	61.0 mm (2.4 in)
1920	30.5 mm (1.2 in)
1921	52.1 mm (2.1 in)
1922	33.8 mm (1.3 in)
1923	27.7 mm (1.1 in)
1924	30.5 mm (1.2 in)
1925	45.0 mm (1.8 in)
1926	51.3 mm (2.0 in)
1928	49.3 mm (1.9 in)
1929	43.9 mm (1.7 in)
1930	32.5 mm (1.3 in)
1931	45.0 mm (1.8 in)
1932	45.7 mm (1.8 in)
1933	25.4 mm (1.0 in)
1934	40.1 mm (1.6 in)
1935	29.5 mm (1.2 in)
1936	25.4 mm (1.0 in)
1937	66.5 mm (2.6 in)
1938	30.5 mm (1.2 in)
1939	94.2 mm (3.7 in)
1940	31.0 mm (1.2 in)
1941	39.6 mm (1.6 in)
1942	38.1 mm (1.5 in)
1943	34.5 mm (1.4 in)
1944	27.9 mm (1.1 in)
1945	32.5 mm (1.3 in)
1946	53.3 mm (2.1 in)
1947	32.5 mm (1.3 in)
1948	48.3 mm (1.9 in)
1949	25.4 mm (1.0 in)
1950	38.1 mm (1.5 in)
1951	35.6 mm (1.4 in)
1952	33.3 mm (1.3 in)
1953	45.2 mm (1.8 in)
1954	44.2 mm (1.7 in)
1955	27.9 mm (1.1 in)
1956	48.5 mm (1.9 in)
1957	52.8 mm (2.1 in)
1958	26.4 mm (1.0 in)
1959	58.2 mm (2.3 in)
1960	43.9 mm (1.7 in)
1961	52.1 mm (2.1 in)
1962	42.7 mm (1.7 in)
1963	45.0 mm (1.8 in)
1964	51.8 mm (2.0 in)
1965	38.4 mm (1.5 in)
1966	55.1 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chapleau 2, 1886 to 1966. The record is 143.7 mm (5.7 in) in 1939, marked on the chart; the median year is 59.4 mm (2.3 in).

Wettest five days (Rx5day) at Chapleau 2 by year
Year	Wettest five days (Rx5day)
1886	42.0 mm (1.7 in)
1889	53.4 mm (2.1 in)
1890	45.7 mm (1.8 in)
1891	41.9 mm (1.6 in)
1897	25.4 mm (1.0 in)
1913	35.5 mm (1.4 in)
1914	73.9 mm (2.9 in)
1915	91.2 mm (3.6 in)
1916	60.0 mm (2.4 in)
1917	57.4 mm (2.3 in)
1918	80.1 mm (3.2 in)
1919	62.3 mm (2.5 in)
1920	32.5 mm (1.3 in)
1921	52.1 mm (2.1 in)
1922	53.9 mm (2.1 in)
1923	43.1 mm (1.7 in)
1924	57.2 mm (2.3 in)
1925	64.2 mm (2.5 in)
1926	123.2 mm (4.9 in)
1928	98.0 mm (3.9 in)
1929	49.0 mm (1.9 in)
1930	63.1 mm (2.5 in)
1931	61.9 mm (2.4 in)
1932	66.6 mm (2.6 in)
1933	37.3 mm (1.5 in)
1934	57.6 mm (2.3 in)
1935	50.8 mm (2.0 in)
1936	42.7 mm (1.7 in)
1937	111.2 mm (4.4 in)
1938	59.7 mm (2.4 in)
1939	143.7 mm (5.7 in)
1940	50.9 mm (2.0 in)
1941	59.6 mm (2.3 in)
1942	81.0 mm (3.2 in)
1943	57.9 mm (2.3 in)
1944	53.2 mm (2.1 in)
1945	52.1 mm (2.1 in)
1946	56.1 mm (2.2 in)
1947	59.2 mm (2.3 in)
1948	70.9 mm (2.8 in)
1949	49.9 mm (2.0 in)
1950	106.7 mm (4.2 in)
1951	52.0 mm (2.0 in)
1952	64.1 mm (2.5 in)
1953	75.7 mm (3.0 in)
1954	86.9 mm (3.4 in)
1955	73.8 mm (2.9 in)
1956	53.6 mm (2.1 in)
1957	99.3 mm (3.9 in)
1958	57.6 mm (2.3 in)
1959	81.1 mm (3.2 in)
1960	79.3 mm (3.1 in)
1961	87.4 mm (3.4 in)
1962	52.1 mm (2.1 in)
1963	61.7 mm (2.4 in)
1964	60.9 mm (2.4 in)
1965	53.7 mm (2.1 in)
1966	79.5 mm (3.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chapleau 2, 1886 to 1966. The record is 35 days in 1916, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Chapleau 2 by year
Year	Longest dry spell (CDD)
1886	8 days
1889	12 days
1890	19 days
1891	21 days
1897	8 days
1913	23 days
1914	23 days
1915	17 days
1916	35 days
1917	30 days
1918	25 days
1919	26 days
1920	18 days
1921	23 days
1922	14 days
1923	19 days
1924	28 days
1925	17 days
1926	18 days
1928	19 days
1929	13 days
1930	24 days
1931	15 days
1932	21 days
1933	14 days
1934	12 days
1935	14 days
1936	21 days
1937	12 days
1938	17 days
1939	21 days
1940	14 days
1941	13 days
1942	15 days
1943	13 days
1944	14 days
1945	17 days
1946	10 days
1947	20 days
1948	28 days
1949	22 days
1950	23 days
1951	14 days
1952	16 days
1953	15 days
1954	19 days
1955	22 days
1956	19 days
1957	18 days
1958	33 days
1959	12 days
1960	19 days
1961	19 days
1962	12 days
1963	13 days
1964	10 days
1965	17 days
1966	13 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at Chapleau 2 falls on 12 June and the median first autumn frost on 31 August, which leaves a median of 81 days between them.

Fitted over all years, the growing season changes by -1.3 days per decade at this station.

Frost dates and growing season at Chapleau 2
Measure	Median, all years	Earliest period	Recent period (1923 to 1964)	Recent against earliest	Fitted trend
Last spring frost	12 June	n/a	12 June	n/a	-1.6 days per decade
First autumn frost	31 August	n/a	31 August	n/a	-2.9 days per decade
Growing days	81 days	n/a	81 days	n/a	-1.3 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

43 years, 1890 to 1965

A day with at least 38.5 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 82.2 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Chapleau 2: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	38.5 mm (1.5 in)
5 years	50.2 mm (2.0 in)
10 years	58.0 mm (2.3 in)
25 years	67.8 mm (2.7 in)
50 years	75.0 mm (3.0 in)	Longer than the 43 years of record
100 years	82.2 mm (3.2 in)	Longer than the 43 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, 43 years of values from 1890 to 1965.

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: 94.2 mm (3.7 in) in 1939; 66.5 mm (2.6 in) in 1937; 58.2 mm (2.3 in) in 1959.

Download the Data

Data for Chapleau 2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chapleau 2 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).