Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Owen Sound. 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 Owen Sound, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-36.7 C (-34.1 F)
n/a
n/a
Mar
26.1 C (79.0 F)
-31.1 C (-24.0 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-18.3 C (-0.9 F)
n/a
n/a
May
36.1 C (97.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
40.0 C (104.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
36.7 C (98.1 F)
2.2 C (36.0 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Owen Sound still stand. 1885 holds the most, with 73.
Standing records at Owen Sound by the year they were set
Year set
Standing records
1878
2
1879
39
1880
29
1881
40
1882
34
1883
45
1884
39
1885
73
1886
42
1887
33
1888
15
1889
20
1890
15
1891
19
1892
13
1893
13
1894
31
1895
38
1896
27
1897
17
1898
20
1899
30
1900
35
1901
12
1902
16
1903
13
1904
22
1905
14
1906
23
1907
19
1908
19
1909
14
1910
12
1911
16
1914
27
1915
8
1916
20
1917
23
1918
19
1919
8
1920
14
1921
21
1922
7
1923
19
1924
8
1925
18
1926
17
1927
12
1928
9
1929
9
1930
19
1931
12
1932
12
1933
14
1934
17
1935
5
1936
12
1937
10
1938
14
1939
10
1940
12
1941
4
1942
8
1943
12
1944
10
1945
29
1946
20
1947
25
1948
15
1949
15
1950
17
1951
4
1952
4
1953
16
1954
9
1955
10
1956
15
1957
12
1958
13
1961
1
All-Time Record Progression
5 new records
5 all-time records were set at Owen Sound between 1 July 1911 and 8 February 1934. Each dot is a new record.
When Owen Sound set new all-time records
Date
Kind
Detail
1911-07-01
Record high maximum temperature
Record high maximum temperature 37.8 C (100.0 F)
1911-07-03
Record high maximum temperature
Record high maximum temperature 40.0 C (104.0 F)
1914-07-15
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
1914-07-16
Record high minimum temperature
Record high minimum temperature 27.2 C (81.0 F)
1934-02-08
Record low maximum temperature
Record low maximum temperature -27.2 C (-17.0 F)
Wettest Day of Each Month
Jul: 137.9 mm (5.4 in)
The wettest day on record for each calendar month at Owen Sound. The most was 137.9 mm (5.4 in) on 5 July 1883.
Record daily precipitation for each month at Owen Sound
Month
Record daily precipitation (mm)
Date
Jan
45.7 mm (1.8 in)
9 January 1912
Feb
49.0 mm (1.9 in)
8 February 1887
Mar
61.0 mm (2.4 in)
14 March 1891
Apr
72.4 mm (2.9 in)
24 April 1957
May
56.9 mm (2.2 in)
30 May 1889
Jun
115.1 mm (4.5 in)
23 June 1944
Jul
137.9 mm (5.4 in)
5 July 1883
Aug
129.3 mm (5.1 in)
23 August 1954
Sep
96.0 mm (3.8 in)
9 September 1885
Oct
82.8 mm (3.3 in)
15 October 1954
Nov
77.0 mm (3.0 in)
24 November 1891
Dec
50.8 mm (2.0 in)
25 December 1898
Period of Record Coverage
1878 to 1961
Complete yearUnder 90 percent of days
80 years of record at Owen Sound, 1878 to 1961. 11 years have data for under 90 percent of days and are left out of rankings: 1878, 1886, 1887, 1910, 1911, 1914, 1915, 1945 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 56 complete years at Owen Sound, 1879 to 1957. Blue stripes are years cooler than the station's own mean of 6.6 C (43.8 F); red stripes are warmer. The coolest year was 1885, at 2.9 C (37.3 F), and the warmest was 1953, at 8.3 C (46.9 F). The strongest colour marks a difference of 3.7 C (6.7 F).
Annual mean temperature at Owen Sound as warming stripes, 1879 to 1957
Year
Annual mean temperature
Difference from the station mean
1879
6.1 C
-0.42 C
1880
6.6 C
+0.09 C
1881
7.3 C
+0.76 C
1882
5.9 C
-0.61 C
1883
3.9 C
-2.67 C
1884
4.7 C
-1.84 C
1885
2.9 C
-3.61 C
1889
6.1 C
-0.45 C
1890
6.3 C
-0.22 C
1891
6.7 C
+0.19 C
1892
6.0 C
-0.60 C
1894
8.0 C
+1.46 C
1895
6.4 C
-0.11 C
1896
7.2 C
+0.68 C
1897
7.3 C
+0.71 C
1898
8.0 C
+1.42 C
1899
6.7 C
+0.12 C
1900
7.7 C
+1.10 C
1901
6.7 C
+0.18 C
1902
6.8 C
+0.27 C
1903
6.9 C
+0.37 C
1904
4.9 C
-1.68 C
1905
6.2 C
-0.31 C
1906
7.3 C
+0.72 C
1907
5.8 C
-0.78 C
1908
7.3 C
+0.71 C
1909
6.9 C
+0.32 C
1918
6.1 C
-0.42 C
1919
7.1 C
+0.50 C
1920
5.6 C
-0.97 C
1921
8.2 C
+1.64 C
1922
6.9 C
+0.30 C
1923
5.7 C
-0.89 C
1924
5.3 C
-1.28 C
1925
6.0 C
-0.58 C
1926
4.7 C
-1.84 C
1928
6.2 C
-0.31 C
1930
6.9 C
+0.35 C
1931
8.2 C
+1.61 C
1933
7.1 C
+0.56 C
1936
5.8 C
-0.74 C
1937
6.9 C
+0.32 C
1938
7.5 C
+0.93 C
1939
6.5 C
-0.02 C
1940
5.3 C
-1.23 C
1941
6.8 C
+0.25 C
1943
6.4 C
-0.16 C
1944
7.6 C
+1.05 C
1946
7.8 C
+1.27 C
1947
7.3 C
+0.71 C
1950
6.8 C
+0.24 C
1953
8.3 C
+1.70 C
1954
6.9 C
+0.37 C
1955
7.5 C
+0.90 C
1956
6.2 C
-0.34 C
1957
6.9 C
+0.36 C
The annual mean temperature here has risen by 0.13 C (0.01 to 0.24) per decade over 1879 to 1957. In Fahrenheit: 0.23 F (0.02 to 0.44) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Owen Sound
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.13 C (0.01 to 0.24) per decade
0.23 F (0.02 to 0.44) per decade
1879 to 1957
56
Rise
Mean daily maximum
0.09 C (-0.03 to 0.21) per decade
0.2 F (-0.1 to 0.4) per decade
1879 to 1957
56
Not clearly different from zero
Mean daily minimum
0.17 C (0.05 to 0.29) per decade
0.3 F (0.1 to 0.5) per decade
1879 to 1957
56
Rise
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
1878 to 1962
Yearly extremes at Owen Sound: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1911
33.1 C (91.5 F)
80
Coldest night (TNn)
-36.7 C (-34.1 F)
1895
-25.0 C (-13.0 F)
80
Wettest day (Rx1day)
137.9 mm (5.4 in)
1883
42.1 mm (1.7 in)
82
Wettest five days (Rx5day)
231.9 mm (9.1 in)
1883
71.2 mm (2.8 in)
82
Longest dry spell (CDD)
48 days
1914
16 days
82
Hottest day (TXx)
The hottest day of the year at Owen Sound, 1878 to 1962. The record is 40.0 C (104.0 F) in 1911, marked on the chart; the median year is 33.1 C (91.5 F).
Hottest day (TXx) at Owen Sound by year
Year
Hottest day (TXx)
1878
33.3 C (91.9 F)
1879
33.3 C (91.9 F)
1880
33.3 C (91.9 F)
1881
36.1 C (97.0 F)
1882
32.2 C (90.0 F)
1883
30.6 C (87.1 F)
1884
33.3 C (91.9 F)
1885
28.9 C (84.0 F)
1886
31.7 C (89.1 F)
1887
32.2 C (90.0 F)
1888
32.2 C (90.0 F)
1889
32.8 C (91.0 F)
1890
31.1 C (88.0 F)
1891
32.2 C (90.0 F)
1892
31.7 C (89.1 F)
1893
33.3 C (91.9 F)
1894
36.7 C (98.1 F)
1895
34.4 C (93.9 F)
1896
34.4 C (93.9 F)
1897
36.1 C (97.0 F)
1898
34.4 C (93.9 F)
1899
35.0 C (95.0 F)
1900
36.1 C (97.0 F)
1901
36.1 C (97.0 F)
1902
32.8 C (91.0 F)
1903
32.2 C (90.0 F)
1904
33.3 C (91.9 F)
1905
32.8 C (91.0 F)
1906
32.8 C (91.0 F)
1907
33.3 C (91.9 F)
1908
34.4 C (93.9 F)
1909
33.3 C (91.9 F)
1910
33.9 C (93.0 F)
1911
40.0 C (104.0 F)
1912
n/a
1914
31.7 C (89.1 F)
1915
31.7 C (89.1 F)
1916
34.4 C (93.9 F)
1917
34.4 C (93.9 F)
1918
36.1 C (97.0 F)
1919
33.9 C (93.0 F)
1920
29.4 C (84.9 F)
1921
35.0 C (95.0 F)
1922
30.6 C (87.1 F)
1923
32.2 C (90.0 F)
1924
30.6 C (87.1 F)
1925
33.3 C (91.9 F)
1926
31.7 C (89.1 F)
1927
32.2 C (90.0 F)
1928
31.7 C (89.1 F)
1929
31.7 C (89.1 F)
1930
30.0 C (86.0 F)
1931
35.0 C (95.0 F)
1932
31.7 C (89.1 F)
1933
35.0 C (95.0 F)
1934
33.9 C (93.0 F)
1935
31.1 C (88.0 F)
1936
35.0 C (95.0 F)
1937
31.7 C (89.1 F)
1938
33.3 C (91.9 F)
1939
32.8 C (91.0 F)
1940
32.2 C (90.0 F)
1941
35.0 C (95.0 F)
1942
31.7 C (89.1 F)
1943
31.1 C (88.0 F)
1944
35.0 C (95.0 F)
1945
31.1 C (88.0 F)
1946
33.9 C (93.0 F)
1947
35.0 C (95.0 F)
1948
35.0 C (95.0 F)
1949
33.9 C (93.0 F)
1950
31.7 C (89.1 F)
1951
30.0 C (86.0 F)
1952
33.9 C (93.0 F)
1953
35.6 C (96.1 F)
1954
32.2 C (90.0 F)
1955
36.7 C (98.1 F)
1956
31.7 C (89.1 F)
1957
31.7 C (89.1 F)
1958
31.1 C (88.0 F)
1959
n/a
1961
31.1 C (88.0 F)
1962
n/a
Coldest night (TNn)
The coldest night of the year at Owen Sound, 1878 to 1962. The record is -36.7 C (-34.1 F) in 1895, marked on the chart; the median year is -25.0 C (-13.0 F).
Coldest night (TNn) at Owen Sound by year
Year
Coldest night (TNn)
1878
-15.6 C (3.9 F)
1879
-28.3 C (-18.9 F)
1880
-23.3 C (-9.9 F)
1881
-30.0 C (-22.0 F)
1882
-31.1 C (-24.0 F)
1883
-28.9 C (-20.0 F)
1884
-32.2 C (-26.0 F)
1885
-35.6 C (-32.1 F)
1886
-35.0 C (-31.0 F)
1887
-30.0 C (-22.0 F)
1888
-28.9 C (-20.0 F)
1889
-26.7 C (-16.1 F)
1890
-27.8 C (-18.0 F)
1891
-21.7 C (-7.1 F)
1892
-24.4 C (-11.9 F)
1893
-27.8 C (-18.0 F)
1894
-29.4 C (-20.9 F)
1895
-36.7 C (-34.1 F)
1896
-30.6 C (-23.1 F)
1897
-27.2 C (-17.0 F)
1898
-25.0 C (-13.0 F)
1899
-34.4 C (-29.9 F)
1900
-27.2 C (-17.0 F)
1901
-24.4 C (-11.9 F)
1902
-22.2 C (-8.0 F)
1903
-24.4 C (-11.9 F)
1904
-32.2 C (-26.0 F)
1905
-31.1 C (-24.0 F)
1906
-30.0 C (-22.0 F)
1907
-28.3 C (-18.9 F)
1908
-30.0 C (-22.0 F)
1909
-20.0 C (-4.0 F)
1910
-25.6 C (-14.1 F)
1911
-21.1 C (-6.0 F)
1912
n/a
1914
7.8 C (46.0 F)
1915
-15.6 C (3.9 F)
1916
-25.6 C (-14.1 F)
1917
-35.6 C (-32.1 F)
1918
-33.9 C (-29.0 F)
1919
-21.7 C (-7.1 F)
1920
-28.9 C (-20.0 F)
1921
-20.0 C (-4.0 F)
1922
-24.4 C (-11.9 F)
1923
-24.4 C (-11.9 F)
1924
-23.3 C (-9.9 F)
1925
-28.9 C (-20.0 F)
1926
-25.0 C (-13.0 F)
1927
-26.1 C (-15.0 F)
1928
-23.3 C (-9.9 F)
1929
-20.6 C (-5.1 F)
1930
-25.6 C (-14.1 F)
1931
-20.6 C (-5.1 F)
1932
-22.2 C (-8.0 F)
1933
-26.7 C (-16.1 F)
1934
-33.9 C (-29.0 F)
1935
-24.4 C (-11.9 F)
1936
-25.0 C (-13.0 F)
1937
-17.8 C (0.0 F)
1938
-23.3 C (-9.9 F)
1939
-23.3 C (-9.9 F)
1940
-24.4 C (-11.9 F)
1941
-23.3 C (-9.9 F)
1942
-28.9 C (-20.0 F)
1943
-31.1 C (-24.0 F)
1944
-18.3 C (-0.9 F)
1945
-27.8 C (-18.0 F)
1946
-20.6 C (-5.1 F)
1947
-22.2 C (-8.0 F)
1948
-26.1 C (-15.0 F)
1949
-17.2 C (1.0 F)
1950
-21.1 C (-6.0 F)
1951
-22.8 C (-9.0 F)
1952
-23.9 C (-11.0 F)
1953
-17.8 C (0.0 F)
1954
-24.4 C (-11.9 F)
1955
-23.3 C (-9.9 F)
1956
-23.9 C (-11.0 F)
1957
-25.6 C (-14.1 F)
1958
-26.1 C (-15.0 F)
1959
n/a
1961
-7.2 C (19.0 F)
1962
n/a
Wettest day (Rx1day)
The wettest day of the year at Owen Sound, 1878 to 1962. The record is 137.9 mm (5.4 in) in 1883, marked on the chart; the median year is 42.1 mm (1.7 in).
Wettest day (Rx1day) at Owen Sound by year
Year
Wettest day (Rx1day)
1878
n/a
1879
40.6 mm (1.6 in)
1880
46.0 mm (1.8 in)
1881
57.9 mm (2.3 in)
1882
27.9 mm (1.1 in)
1883
137.9 mm (5.4 in)
1884
47.2 mm (1.9 in)
1885
96.0 mm (3.8 in)
1886
60.5 mm (2.4 in)
1887
57.2 mm (2.3 in)
1888
37.6 mm (1.5 in)
1889
56.9 mm (2.2 in)
1890
59.7 mm (2.4 in)
1891
97.0 mm (3.8 in)
1892
55.9 mm (2.2 in)
1893
71.4 mm (2.8 in)
1894
65.0 mm (2.6 in)
1895
55.6 mm (2.2 in)
1896
41.9 mm (1.6 in)
1897
72.9 mm (2.9 in)
1898
50.8 mm (2.0 in)
1899
45.7 mm (1.8 in)
1900
64.5 mm (2.5 in)
1901
56.9 mm (2.2 in)
1902
43.2 mm (1.7 in)
1903
43.9 mm (1.7 in)
1904
19.3 mm (0.8 in)
1905
33.0 mm (1.3 in)
1906
36.8 mm (1.4 in)
1907
41.7 mm (1.6 in)
1908
42.2 mm (1.7 in)
1909
60.2 mm (2.4 in)
1910
33.5 mm (1.3 in)
1911
45.7 mm (1.8 in)
1912
45.7 mm (1.8 in)
1914
30.5 mm (1.2 in)
1915
30.5 mm (1.2 in)
1916
35.6 mm (1.4 in)
1917
41.9 mm (1.6 in)
1918
31.5 mm (1.2 in)
1919
33.3 mm (1.3 in)
1920
68.6 mm (2.7 in)
1921
29.5 mm (1.2 in)
1922
41.7 mm (1.6 in)
1923
28.7 mm (1.1 in)
1924
33.5 mm (1.3 in)
1925
36.6 mm (1.4 in)
1926
61.2 mm (2.4 in)
1927
31.5 mm (1.2 in)
1928
41.7 mm (1.6 in)
1929
50.5 mm (2.0 in)
1930
23.6 mm (0.9 in)
1931
33.8 mm (1.3 in)
1932
30.2 mm (1.2 in)
1933
29.0 mm (1.1 in)
1934
40.9 mm (1.6 in)
1935
27.4 mm (1.1 in)
1936
68.3 mm (2.7 in)
1937
27.7 mm (1.1 in)
1938
29.2 mm (1.1 in)
1939
31.5 mm (1.2 in)
1940
40.9 mm (1.6 in)
1941
67.8 mm (2.7 in)
1942
53.6 mm (2.1 in)
1943
35.6 mm (1.4 in)
1944
115.1 mm (4.5 in)
1945
34.0 mm (1.3 in)
1946
22.1 mm (0.9 in)
1947
35.6 mm (1.4 in)
1948
50.5 mm (2.0 in)
1949
42.7 mm (1.7 in)
1950
69.1 mm (2.7 in)
1951
37.3 mm (1.5 in)
1952
46.2 mm (1.8 in)
1953
40.6 mm (1.6 in)
1954
129.3 mm (5.1 in)
1955
40.9 mm (1.6 in)
1956
42.7 mm (1.7 in)
1957
78.5 mm (3.1 in)
1958
31.8 mm (1.3 in)
1959
55.6 mm (2.2 in)
1961
58.9 mm (2.3 in)
1962
25.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Owen Sound, 1878 to 1962. The record is 231.9 mm (9.1 in) in 1883, marked on the chart; the median year is 71.2 mm (2.8 in).
Wettest five days (Rx5day) at Owen Sound by year
Year
Wettest five days (Rx5day)
1878
n/a
1879
53.1 mm (2.1 in)
1880
53.6 mm (2.1 in)
1881
91.4 mm (3.6 in)
1882
55.9 mm (2.2 in)
1883
231.9 mm (9.1 in)
1884
72.6 mm (2.9 in)
1885
102.6 mm (4.0 in)
1886
60.5 mm (2.4 in)
1887
80.1 mm (3.2 in)
1888
58.9 mm (2.3 in)
1889
81.8 mm (3.2 in)
1890
62.5 mm (2.5 in)
1891
111.0 mm (4.4 in)
1892
80.3 mm (3.2 in)
1893
71.4 mm (2.8 in)
1894
81.5 mm (3.2 in)
1895
67.2 mm (2.6 in)
1896
59.7 mm (2.4 in)
1897
109.7 mm (4.3 in)
1898
109.6 mm (4.3 in)
1899
76.2 mm (3.0 in)
1900
111.4 mm (4.4 in)
1901
102.2 mm (4.0 in)
1902
77.4 mm (3.0 in)
1903
77.1 mm (3.0 in)
1904
39.7 mm (1.6 in)
1905
61.1 mm (2.4 in)
1906
46.0 mm (1.8 in)
1907
55.9 mm (2.2 in)
1908
70.6 mm (2.8 in)
1909
92.8 mm (3.7 in)
1910
73.6 mm (2.9 in)
1911
51.5 mm (2.0 in)
1912
125.2 mm (4.9 in)
1914
103.0 mm (4.1 in)
1915
44.5 mm (1.8 in)
1916
81.4 mm (3.2 in)
1917
115.5 mm (4.5 in)
1918
38.1 mm (1.5 in)
1919
43.5 mm (1.7 in)
1920
91.5 mm (3.6 in)
1921
60.5 mm (2.4 in)
1922
70.9 mm (2.8 in)
1923
49.0 mm (1.9 in)
1924
45.1 mm (1.8 in)
1925
68.5 mm (2.7 in)
1926
72.1 mm (2.8 in)
1927
56.6 mm (2.2 in)
1928
99.4 mm (3.9 in)
1929
67.8 mm (2.7 in)
1930
37.9 mm (1.5 in)
1931
57.6 mm (2.3 in)
1932
52.8 mm (2.1 in)
1933
58.7 mm (2.3 in)
1934
47.8 mm (1.9 in)
1935
56.1 mm (2.2 in)
1936
84.2 mm (3.3 in)
1937
59.8 mm (2.4 in)
1938
53.3 mm (2.1 in)
1939
45.2 mm (1.8 in)
1940
73.1 mm (2.9 in)
1941
77.5 mm (3.1 in)
1942
83.3 mm (3.3 in)
1943
44.3 mm (1.7 in)
1944
119.2 mm (4.7 in)
1945
76.2 mm (3.0 in)
1946
46.6 mm (1.8 in)
1947
91.4 mm (3.6 in)
1948
62.3 mm (2.5 in)
1949
75.2 mm (3.0 in)
1950
85.1 mm (3.4 in)
1951
48.8 mm (1.9 in)
1952
53.8 mm (2.1 in)
1953
69.8 mm (2.7 in)
1954
131.1 mm (5.2 in)
1955
68.6 mm (2.7 in)
1956
76.6 mm (3.0 in)
1957
96.5 mm (3.8 in)
1958
79.9 mm (3.1 in)
1959
72.1 mm (2.8 in)
1961
91.1 mm (3.6 in)
1962
63.5 mm (2.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Owen Sound, 1878 to 1962. The record is 48 days in 1914, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Owen Sound by year
Year
Longest dry spell (CDD)
1878
n/a
1879
15 days
1880
14 days
1881
36 days
1882
18 days
1883
10 days
1884
14 days
1885
18 days
1886
18 days
1887
22 days
1888
29 days
1889
18 days
1890
10 days
1891
20 days
1892
13 days
1893
14 days
1894
11 days
1895
15 days
1896
17 days
1897
20 days
1898
19 days
1899
15 days
1900
18 days
1901
12 days
1902
11 days
1903
13 days
1904
10 days
1905
11 days
1906
16 days
1907
12 days
1908
30 days
1909
13 days
1910
19 days
1911
15 days
1912
10 days
1914
48 days
1915
24 days
1916
19 days
1917
22 days
1918
16 days
1919
19 days
1920
15 days
1921
21 days
1922
19 days
1923
19 days
1924
26 days
1925
25 days
1926
20 days
1927
18 days
1928
11 days
1929
11 days
1930
18 days
1931
12 days
1932
16 days
1933
16 days
1934
18 days
1935
17 days
1936
23 days
1937
14 days
1938
12 days
1939
20 days
1940
12 days
1941
24 days
1942
16 days
1943
12 days
1944
15 days
1945
14 days
1946
17 days
1947
18 days
1948
16 days
1949
25 days
1950
16 days
1951
12 days
1952
17 days
1953
12 days
1954
26 days
1955
21 days
1956
14 days
1957
20 days
1958
19 days
1959
13 days
1961
15 days
1962
5 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
56 years with a frost
Across 56 years with a frost, the median last spring frost at Owen Sound falls on 17 May and the median first autumn frost on 7 October, which leaves a median of 143 days between them.
Fitted over all years, the growing season changes by +2.4 days per decade at this station.
Frost dates and growing season at Owen Sound
Measure
Median, all years
Earliest period
Recent period (1909 to 1957)
Recent against earliest
Fitted trend
Last spring frost
17 May
n/a
17 May
n/a
-1.1 days per decade
First autumn frost
7 October
n/a
9 October
n/a
+1.3 days per decade
Growing days
143 days
n/a
144 days
n/a
+2.4 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
69 years, 1879 to 1958
A day with at least 43.3 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 143.6 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Owen Sound: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
43.3 mm (1.7 in)
5 years
61.9 mm (2.4 in)
10 years
77.0 mm (3.0 in)
25 years
99.9 mm (3.9 in)
50 years
120.2 mm (4.7 in)
100 years
143.6 mm (5.7 in)
Longer than the 69 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, 69 years of values from 1879 to 1958.
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: 137.9 mm (5.4 in) in 1883; 129.3 mm (5.1 in) in 1954; 115.1 mm (4.5 in) in 1944.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Owen Sound standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Owen Sound 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.