Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Walkerton. 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 Walkerton, 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)
-36.1 C (-33.0 F)
n/a
n/a
Feb
15.6 C (60.1 F)
-41.7 C (-43.1 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-37.2 C (-35.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-16.7 C (1.9 F)
n/a
n/a
May
32.2 C (90.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
38.9 C (102.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
37.2 C (99.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
24.4 C (75.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Walkerton still stand. 1920 holds the most, with 80.
Standing records at Walkerton by the year they were set
Year set
Standing records
1903
7
1904
2
1915
12
1916
33
1917
34
1918
35
1919
33
1920
80
1921
44
1922
27
1923
16
1924
16
1925
33
1926
37
1927
30
1928
21
1929
32
1930
35
1931
30
1932
28
1933
36
1934
50
1935
22
1936
34
1937
24
1938
29
1939
18
1940
12
1941
29
1942
18
1943
13
1944
17
1945
34
1946
29
1947
33
1948
21
1949
31
1950
29
1951
26
1952
10
1953
17
1954
15
1955
18
1956
11
1957
16
1958
17
1959
20
1960
20
1961
9
1962
24
1963
19
1964
25
1965
36
1966
19
1967
25
1968
19
1969
16
1970
22
1971
16
All-Time Record Progression
1 new records
1 all-time records were set at Walkerton between 2 August 1964 and 2 August 1964. Each dot is a new record.
When Walkerton set new all-time records
Date
Kind
Detail
1964-08-02
Record daily precipitation
Record daily precipitation 125.2 mm (4.9 in)
Wettest Day of Each Month
Aug: 125.2 mm (4.9 in)
The wettest day on record for each calendar month at Walkerton. The most was 125.2 mm (4.9 in) on 2 August 1964.
Record daily precipitation for each month at Walkerton
Month
Record daily precipitation (mm)
Date
Jan
35.6 mm (1.4 in)
31 January 1954
Feb
39.9 mm (1.6 in)
7 February 1951
Mar
61.0 mm (2.4 in)
9 March 1916
Apr
61.0 mm (2.4 in)
25 April 1951
May
56.9 mm (2.2 in)
25 May 1955
Jun
55.9 mm (2.2 in)
17 June 1921
Jul
74.2 mm (2.9 in)
15 July 1945
Aug
125.2 mm (4.9 in)
2 August 1964
Sep
89.9 mm (3.5 in)
4 September 1932
Oct
58.4 mm (2.3 in)
4 October 1941
Nov
44.5 mm (1.8 in)
18 November 1929
Dec
46.0 mm (1.8 in)
7 December 1927
Period of Record Coverage
1903 to 1971
Complete yearUnder 90 percent of days
59 years of record at Walkerton, 1903 to 1971. 4 years have data for under 90 percent of days and are left out of rankings: 1903, 1904, 1915, 1923.
Cooler than the station meanWarmer than the station mean
One stripe for each of 51 complete years at Walkerton, 1918 to 1971. Blue stripes are years cooler than the station's own mean of 6.8 C (44.2 F); red stripes are warmer. The coolest year was 1920, at 4.3 C (39.7 F), and the warmest was 1931, at 8.6 C (47.4 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Walkerton as warming stripes, 1918 to 1971
Year
Annual mean temperature
Difference from the station mean
1918
5.9 C
-0.92 C
1919
7.1 C
+0.32 C
1920
4.3 C
-2.50 C
1921
7.6 C
+0.83 C
1924
5.4 C
-1.36 C
1925
6.5 C
-0.32 C
1926
5.0 C
-1.79 C
1927
6.9 C
+0.10 C
1928
6.9 C
+0.07 C
1929
6.4 C
-0.34 C
1931
8.6 C
+1.80 C
1932
7.7 C
+0.89 C
1933
8.2 C
+1.37 C
1934
6.4 C
-0.43 C
1935
6.7 C
-0.12 C
1936
6.4 C
-0.41 C
1937
7.0 C
+0.19 C
1938
7.7 C
+0.95 C
1939
6.9 C
+0.13 C
1940
6.0 C
-0.77 C
1941
7.7 C
+0.92 C
1942
7.3 C
+0.48 C
1943
6.4 C
-0.39 C
1944
7.7 C
+0.93 C
1945
7.0 C
+0.24 C
1946
8.1 C
+1.32 C
1947
6.9 C
+0.15 C
1948
7.0 C
+0.25 C
1949
8.1 C
+1.32 C
1950
6.6 C
-0.21 C
1951
7.1 C
+0.29 C
1952
7.7 C
+0.96 C
1953
8.3 C
+1.54 C
1954
6.9 C
+0.14 C
1955
7.9 C
+1.08 C
1956
6.6 C
-0.16 C
1957
7.1 C
+0.36 C
1958
6.3 C
-0.45 C
1959
6.9 C
+0.15 C
1960
6.5 C
-0.30 C
1961
7.1 C
+0.32 C
1962
6.3 C
-0.44 C
1963
5.7 C
-1.09 C
1964
6.5 C
-0.27 C
1965
5.6 C
-1.14 C
1966
6.0 C
-0.75 C
1967
5.9 C
-0.87 C
1968
6.3 C
-0.45 C
1969
5.9 C
-0.89 C
1970
5.9 C
-0.93 C
1971
6.8 C
-0.02 C
The fitted trend in annual mean temperature here over 1918 to 1971 is -0.02 C (-0.19 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.05 F (-0.34 to 0.25) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Walkerton
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.02 C (-0.19 to 0.14) per decade
-0.05 F (-0.34 to 0.25) per decade
1918 to 1971
51
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.3) per decade
1918 to 1971
51
Not clearly different from zero
Mean daily minimum
0.01 C (-0.15 to 0.16) per decade
0.01 F (-0.27 to 0.29) per decade
1918 to 1971
51
Not clearly different from zero
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
1902 to 1971
Yearly extremes at Walkerton: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1936
33.9 C (93.0 F)
59
Coldest night (TNn)
-41.7 C (-43.1 F)
1934
-29.4 C (-20.9 F)
59
Wettest day (Rx1day)
125.2 mm (4.9 in)
1964
46.6 mm (1.8 in)
60
Wettest five days (Rx5day)
152.6 mm (6.0 in)
1964
67.6 mm (2.7 in)
60
Longest dry spell (CDD)
29 days
1945
17 days
60
Hottest day (TXx)
The hottest day of the year at Walkerton, 1902 to 1971. The record is 38.9 C (102.0 F) in 1936, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Walkerton by year
Year
Hottest day (TXx)
1902
n/a
1903
28.9 C (84.0 F)
1904
-1.1 C (30.0 F)
1915
30.6 C (87.1 F)
1916
37.2 C (99.0 F)
1917
35.6 C (96.1 F)
1918
36.7 C (98.1 F)
1919
36.1 C (97.0 F)
1920
31.1 C (88.0 F)
1921
35.6 C (96.1 F)
1922
32.8 C (91.0 F)
1923
33.9 C (93.0 F)
1924
34.4 C (93.9 F)
1925
33.9 C (93.0 F)
1926
34.4 C (93.9 F)
1927
37.2 C (99.0 F)
1928
33.9 C (93.0 F)
1929
34.4 C (93.9 F)
1930
35.0 C (95.0 F)
1931
37.8 C (100.0 F)
1932
33.9 C (93.0 F)
1933
37.2 C (99.0 F)
1934
37.8 C (100.0 F)
1935
35.0 C (95.0 F)
1936
38.9 C (102.0 F)
1937
33.9 C (93.0 F)
1938
34.4 C (93.9 F)
1939
35.0 C (95.0 F)
1940
34.4 C (93.9 F)
1941
36.7 C (98.1 F)
1942
34.4 C (93.9 F)
1943
33.3 C (91.9 F)
1944
37.2 C (99.0 F)
1945
32.8 C (91.0 F)
1946
34.4 C (93.9 F)
1947
35.0 C (95.0 F)
1948
36.1 C (97.0 F)
1949
34.4 C (93.9 F)
1950
30.6 C (87.1 F)
1951
32.2 C (90.0 F)
1952
35.6 C (96.1 F)
1953
36.7 C (98.1 F)
1954
32.2 C (90.0 F)
1955
36.7 C (98.1 F)
1956
32.2 C (90.0 F)
1957
33.9 C (93.0 F)
1958
31.1 C (88.0 F)
1959
32.2 C (90.0 F)
1960
33.3 C (91.9 F)
1961
30.6 C (87.1 F)
1962
32.2 C (90.0 F)
1963
32.8 C (91.0 F)
1964
32.2 C (90.0 F)
1965
32.2 C (90.0 F)
1966
32.8 C (91.0 F)
1967
30.0 C (86.0 F)
1968
32.2 C (90.0 F)
1969
31.1 C (88.0 F)
1970
31.1 C (88.0 F)
1971
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Walkerton, 1902 to 1971. The record is -41.7 C (-43.1 F) in 1934, marked on the chart; the median year is -29.4 C (-20.9 F).
Coldest night (TNn) at Walkerton by year
Year
Coldest night (TNn)
1902
n/a
1903
-3.3 C (26.1 F)
1904
-26.1 C (-15.0 F)
1915
-18.3 C (-0.9 F)
1916
-29.4 C (-20.9 F)
1917
-31.7 C (-25.1 F)
1918
-37.8 C (-36.0 F)
1919
-23.3 C (-9.9 F)
1920
-36.1 C (-33.0 F)
1921
-20.0 C (-4.0 F)
1922
-29.4 C (-20.9 F)
1923
-8.9 C (16.0 F)
1924
-31.7 C (-25.1 F)
1925
-35.6 C (-32.1 F)
1926
-28.9 C (-20.0 F)
1927
-32.2 C (-26.0 F)
1928
-29.4 C (-20.9 F)
1929
-27.2 C (-17.0 F)
1930
-25.6 C (-14.1 F)
1931
-20.0 C (-4.0 F)
1932
-21.7 C (-7.1 F)
1933
-27.2 C (-17.0 F)
1934
-41.7 C (-43.1 F)
1935
-32.2 C (-26.0 F)
1936
-31.1 C (-24.0 F)
1937
-25.0 C (-13.0 F)
1938
-28.9 C (-20.0 F)
1939
-22.8 C (-9.0 F)
1940
-33.3 C (-27.9 F)
1941
-28.3 C (-18.9 F)
1942
-29.4 C (-20.9 F)
1943
-32.2 C (-26.0 F)
1944
-21.7 C (-7.1 F)
1945
-30.6 C (-23.1 F)
1946
-30.6 C (-23.1 F)
1947
-28.3 C (-18.9 F)
1948
-37.2 C (-35.0 F)
1949
-24.4 C (-11.9 F)
1950
-28.9 C (-20.0 F)
1951
-28.9 C (-20.0 F)
1952
-25.6 C (-14.1 F)
1953
-23.3 C (-9.9 F)
1954
-27.8 C (-18.0 F)
1955
-30.0 C (-22.0 F)
1956
-23.9 C (-11.0 F)
1957
-27.2 C (-17.0 F)
1958
-30.6 C (-23.1 F)
1959
-33.3 C (-27.9 F)
1960
-28.9 C (-20.0 F)
1961
-36.1 C (-33.0 F)
1962
-35.0 C (-31.0 F)
1963
-33.3 C (-27.9 F)
1964
-31.7 C (-25.1 F)
1965
-31.7 C (-25.1 F)
1966
-33.9 C (-29.0 F)
1967
-31.7 C (-25.1 F)
1968
-32.2 C (-26.0 F)
1969
-29.4 C (-20.9 F)
1970
-32.8 C (-27.0 F)
1971
-26.7 C (-16.1 F)
Wettest day (Rx1day)
The wettest day of the year at Walkerton, 1902 to 1971. The record is 125.2 mm (4.9 in) in 1964, marked on the chart; the median year is 46.6 mm (1.8 in).
Wettest day (Rx1day) at Walkerton by year
Year
Wettest day (Rx1day)
1902
51.3 mm (2.0 in)
1903
27.9 mm (1.1 in)
1904
11.4 mm (0.4 in)
1915
51.3 mm (2.0 in)
1916
61.0 mm (2.4 in)
1917
38.1 mm (1.5 in)
1918
38.1 mm (1.5 in)
1919
34.5 mm (1.4 in)
1920
41.4 mm (1.6 in)
1921
55.9 mm (2.2 in)
1922
34.3 mm (1.4 in)
1923
35.1 mm (1.4 in)
1924
37.8 mm (1.5 in)
1925
42.7 mm (1.7 in)
1926
61.0 mm (2.4 in)
1927
46.0 mm (1.8 in)
1928
50.8 mm (2.0 in)
1929
49.0 mm (1.9 in)
1930
30.0 mm (1.2 in)
1931
31.5 mm (1.2 in)
1932
89.9 mm (3.5 in)
1933
51.6 mm (2.0 in)
1934
44.5 mm (1.8 in)
1935
33.5 mm (1.3 in)
1936
44.5 mm (1.8 in)
1937
52.1 mm (2.1 in)
1938
55.6 mm (2.2 in)
1939
43.2 mm (1.7 in)
1940
46.0 mm (1.8 in)
1941
58.4 mm (2.3 in)
1942
55.9 mm (2.2 in)
1943
48.5 mm (1.9 in)
1944
37.6 mm (1.5 in)
1945
74.2 mm (2.9 in)
1946
27.9 mm (1.1 in)
1947
45.7 mm (1.8 in)
1948
44.5 mm (1.8 in)
1949
44.2 mm (1.7 in)
1950
48.3 mm (1.9 in)
1951
61.0 mm (2.4 in)
1952
41.1 mm (1.6 in)
1953
61.0 mm (2.4 in)
1954
55.9 mm (2.2 in)
1955
56.9 mm (2.2 in)
1956
64.3 mm (2.5 in)
1957
49.0 mm (1.9 in)
1958
64.5 mm (2.5 in)
1959
48.3 mm (1.9 in)
1960
47.0 mm (1.9 in)
1961
55.9 mm (2.2 in)
1962
36.1 mm (1.4 in)
1963
47.5 mm (1.9 in)
1964
125.2 mm (4.9 in)
1965
97.8 mm (3.9 in)
1966
35.3 mm (1.4 in)
1967
46.2 mm (1.8 in)
1968
79.0 mm (3.1 in)
1969
33.3 mm (1.3 in)
1970
28.7 mm (1.1 in)
1971
30.7 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Walkerton, 1902 to 1971. The record is 152.6 mm (6.0 in) in 1964, marked on the chart; the median year is 67.6 mm (2.7 in).
Wettest five days (Rx5day) at Walkerton by year
Year
Wettest five days (Rx5day)
1902
79.8 mm (3.1 in)
1903
53.3 mm (2.1 in)
1904
25.4 mm (1.0 in)
1915
67.6 mm (2.7 in)
1916
99.1 mm (3.9 in)
1917
63.8 mm (2.5 in)
1918
96.4 mm (3.8 in)
1919
64.0 mm (2.5 in)
1920
81.5 mm (3.2 in)
1921
68.0 mm (2.7 in)
1922
47.8 mm (1.9 in)
1923
61.0 mm (2.4 in)
1924
70.6 mm (2.8 in)
1925
53.3 mm (2.1 in)
1926
67.6 mm (2.7 in)
1927
56.2 mm (2.2 in)
1928
83.8 mm (3.3 in)
1929
72.7 mm (2.9 in)
1930
60.3 mm (2.4 in)
1931
57.2 mm (2.3 in)
1932
103.4 mm (4.1 in)
1933
80.8 mm (3.2 in)
1934
53.3 mm (2.1 in)
1935
61.7 mm (2.4 in)
1936
71.7 mm (2.8 in)
1937
53.3 mm (2.1 in)
1938
65.2 mm (2.6 in)
1939
64.5 mm (2.5 in)
1940
58.3 mm (2.3 in)
1941
106.2 mm (4.2 in)
1942
68.6 mm (2.7 in)
1943
53.6 mm (2.1 in)
1944
66.3 mm (2.6 in)
1945
116.9 mm (4.6 in)
1946
50.9 mm (2.0 in)
1947
45.7 mm (1.8 in)
1948
44.5 mm (1.8 in)
1949
46.0 mm (1.8 in)
1950
71.3 mm (2.8 in)
1951
71.9 mm (2.8 in)
1952
69.3 mm (2.7 in)
1953
80.1 mm (3.2 in)
1954
128.5 mm (5.1 in)
1955
73.7 mm (2.9 in)
1956
108.7 mm (4.3 in)
1957
72.3 mm (2.8 in)
1958
72.1 mm (2.8 in)
1959
55.1 mm (2.2 in)
1960
60.6 mm (2.4 in)
1961
64.0 mm (2.5 in)
1962
68.6 mm (2.7 in)
1963
92.9 mm (3.7 in)
1964
152.6 mm (6.0 in)
1965
125.3 mm (4.9 in)
1966
59.2 mm (2.3 in)
1967
66.1 mm (2.6 in)
1968
99.6 mm (3.9 in)
1969
70.0 mm (2.8 in)
1970
44.3 mm (1.7 in)
1971
53.1 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Walkerton, 1902 to 1971. The record is 29 days in 1945, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Walkerton by year
Year
Longest dry spell (CDD)
1902
9 days
1903
18 days
1904
6 days
1915
10 days
1916
21 days
1917
15 days
1918
10 days
1919
16 days
1920
18 days
1921
21 days
1922
17 days
1923
20 days
1924
21 days
1925
24 days
1926
12 days
1927
13 days
1928
14 days
1929
21 days
1930
18 days
1931
12 days
1932
17 days
1933
19 days
1934
19 days
1935
15 days
1936
24 days
1937
12 days
1938
12 days
1939
20 days
1940
11 days
1941
13 days
1942
13 days
1943
17 days
1944
24 days
1945
29 days
1946
23 days
1947
20 days
1948
28 days
1949
24 days
1950
15 days
1951
10 days
1952
13 days
1953
19 days
1954
18 days
1955
21 days
1956
16 days
1957
18 days
1958
20 days
1959
10 days
1960
19 days
1961
15 days
1962
22 days
1963
15 days
1964
13 days
1965
9 days
1966
18 days
1967
20 days
1968
12 days
1969
17 days
1970
12 days
1971
10 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
51 years with a frost
Across 51 years with a frost, the median last spring frost at Walkerton falls on 24 May and the median first autumn frost on 27 September, which leaves a median of 128 days between them.
Fitted over all years, the growing season changes by 0.0 days per decade at this station.
Frost dates and growing season at Walkerton
Measure
Median, all years
Earliest period
Recent period (1942 to 1971)
Recent against earliest
Fitted trend
Last spring frost
24 May
n/a
25 May
n/a
+0.9 days per decade
First autumn frost
27 September
n/a
30 September
n/a
+0.9 days per decade
Growing days
128 days
n/a
128 days
n/a
0.0 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
55 years, 1916 to 1971
A day with at least 46.3 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 112.8 mm (4.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Walkerton: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.3 mm (1.8 in)
5 years
60.6 mm (2.4 in)
10 years
71.3 mm (2.8 in)
25 years
86.5 mm (3.4 in)
50 years
99.1 mm (3.9 in)
100 years
112.8 mm (4.4 in)
Longer than the 55 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, 55 years of values from 1916 to 1971.
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: 125.2 mm (4.9 in) in 1964; 97.8 mm (3.9 in) in 1965; 89.9 mm (3.5 in) in 1932.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Walkerton, at 1963. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1963 ran 0.4 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Walkerton, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1963
-0.4
-0.8
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Walkerton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Walkerton 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.