Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Toronto Agincourt. 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 Toronto Agincourt, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.0 C (59.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-26.1 C (-15.0 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-16.1 C (3.0 F)
n/a
n/a
May
33.9 C (93.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
40.6 C (105.1 F)
2.2 C (36.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
2.8 C (37.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
24.4 C (75.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
16.1 C (61.0 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 Toronto Agincourt still stand. 1936 holds the most, with 43.
Standing records at Toronto Agincourt by the year they were set
Year set
Standing records
1895
7
1896
23
1897
23
1898
31
1899
23
1900
39
1901
13
1902
24
1903
25
1904
29
1905
13
1906
26
1907
26
1908
1
1909
5
1910
19
1911
26
1912
15
1913
25
1914
30
1915
19
1916
25
1917
24
1918
19
1919
16
1920
35
1921
26
1922
14
1923
26
1924
12
1925
31
1926
27
1927
21
1928
17
1929
19
1930
32
1931
31
1932
21
1933
37
1934
27
1935
10
1936
43
1937
14
1938
18
1939
11
1940
17
1941
18
1942
18
1943
14
1944
4
1945
31
1946
21
1947
21
1948
22
1949
27
1950
23
1951
13
1952
10
1953
12
1954
16
1955
11
1956
19
1957
15
1958
7
1959
22
1960
11
1961
10
1962
17
1963
13
1964
19
1965
21
1966
13
1967
19
1968
2
All-Time Record Progression
4 new records
4 all-time records were set at Toronto Agincourt between 8 February 1934 and 11 December 1944. Each dot is a new record.
When Toronto Agincourt set new all-time records
Date
Kind
Detail
1934-02-08
Record low maximum temperature
Record low maximum temperature -26.7 C (-16.1 F)
1936-07-08
Record high maximum temperature
Record high maximum temperature 40.6 C (105.1 F)
1936-07-14
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
1944-12-11
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
Wettest Day of Each Month
Aug: 126.0 mm (5.0 in)
The wettest day on record for each calendar month at Toronto Agincourt. The most was 126.0 mm (5.0 in) on 4 August 1915.
Record daily precipitation for each month at Toronto Agincourt
Month
Record daily precipitation (mm)
Date
Jan
43.2 mm (1.7 in)
13 January 1937
Feb
40.6 mm (1.6 in)
23 February 1925
Mar
39.6 mm (1.6 in)
16 March 1942
Apr
56.4 mm (2.2 in)
12 April 1951
May
80.0 mm (3.1 in)
26 May 1932
Jun
80.3 mm (3.2 in)
28 June 1965
Jul
76.7 mm (3.0 in)
11 July 1937
Aug
126.0 mm (5.0 in)
4 August 1915
Sep
58.2 mm (2.3 in)
1 September 1899
Oct
84.6 mm (3.3 in)
15 October 1954
Nov
57.7 mm (2.3 in)
9 November 1962
Dec
45.7 mm (1.8 in)
11 December 1944
Period of Record Coverage
1895 to 1968
Complete yearUnder 90 percent of days
74 years of record at Toronto Agincourt, 1895 to 1968. 6 years have data for under 90 percent of days and are left out of rankings: 1895, 1896, 1908, 1909, 1961, 1968.
Cooler than the station meanWarmer than the station mean
One stripe for each of 66 complete years at Toronto Agincourt, 1897 to 1966. 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 1904, at 4.4 C (40.0 F), and the warmest was 1931, at 9.2 C (48.5 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Toronto Agincourt as warming stripes, 1897 to 1966
Year
Annual mean temperature
Difference from the station mean
1897
6.9 C
-0.35 C
1898
7.6 C
+0.38 C
1899
6.8 C
-0.39 C
1900
7.4 C
+0.15 C
1901
6.6 C
-0.67 C
1902
6.6 C
-0.67 C
1903
6.6 C
-0.64 C
1904
4.4 C
-2.80 C
1905
5.9 C
-1.32 C
1906
6.9 C
-0.35 C
1907
5.6 C
-1.64 C
1910
7.1 C
-0.15 C
1911
7.8 C
+0.60 C
1912
6.0 C
-1.23 C
1913
8.1 C
+0.82 C
1914
6.8 C
-0.43 C
1915
7.2 C
-0.04 C
1916
6.9 C
-0.34 C
1917
5.0 C
-2.23 C
1918
6.6 C
-0.63 C
1919
8.0 C
+0.76 C
1920
6.7 C
-0.52 C
1921
9.2 C
+1.92 C
1922
8.0 C
+0.75 C
1923
6.9 C
-0.35 C
1924
6.4 C
-0.82 C
1925
7.0 C
-0.22 C
1926
6.1 C
-1.16 C
1927
7.6 C
+0.39 C
1928
7.5 C
+0.31 C
1929
7.3 C
+0.02 C
1930
8.0 C
+0.78 C
1931
9.2 C
+1.96 C
1932
8.4 C
+1.12 C
1933
8.3 C
+1.08 C
1934
7.0 C
-0.21 C
1935
7.1 C
-0.10 C
1936
7.2 C
-0.02 C
1937
8.0 C
+0.76 C
1938
8.2 C
+0.99 C
1939
7.3 C
+0.07 C
1940
6.2 C
-1.08 C
1941
8.1 C
+0.87 C
1942
7.6 C
+0.36 C
1943
6.7 C
-0.52 C
1944
7.4 C
+0.17 C
1945
6.7 C
-0.58 C
1946
7.5 C
+0.31 C
1947
7.0 C
-0.21 C
1948
7.4 C
+0.17 C
1949
8.6 C
+1.38 C
1950
6.6 C
-0.60 C
1951
7.4 C
+0.17 C
1952
8.3 C
+1.05 C
1953
8.8 C
+1.54 C
1954
7.5 C
+0.26 C
1955
8.2 C
+0.97 C
1956
6.9 C
-0.29 C
1957
7.8 C
+0.52 C
1958
6.9 C
-0.35 C
1959
7.8 C
+0.52 C
1960
7.3 C
+0.03 C
1962
7.3 C
+0.10 C
1963
7.1 C
-0.11 C
1965
7.1 C
-0.16 C
1966
7.5 C
+0.22 C
The annual mean temperature here has risen by 0.15 C (0.05 to 0.25) per decade over 1897 to 1966. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Toronto Agincourt
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.15 C (0.05 to 0.25) per decade
0.3 F (0.1 to 0.5) per decade
1897 to 1966
66
Rise
Mean daily maximum
0.06 C (-0.05 to 0.16) per decade
0.1 F (-0.1 to 0.3) per decade
1897 to 1966
66
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.2 to 0.6) per decade
1897 to 1966
66
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
1895 to 1968
Yearly extremes at Toronto Agincourt: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1936
34.4 C (93.9 F)
74
Coldest night (TNn)
-31.7 C (-25.1 F)
1896
-24.4 C (-11.9 F)
74
Wettest day (Rx1day)
126.0 mm (5.0 in)
1915
43.1 mm (1.7 in)
74
Wettest five days (Rx5day)
143.7 mm (5.7 in)
1915
65.2 mm (2.6 in)
74
Longest dry spell (CDD)
46 days
1904
18 days
74
Hottest day (TXx)
The hottest day of the year at Toronto Agincourt, 1895 to 1968. The record is 40.6 C (105.1 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Toronto Agincourt by year
Year
Hottest day (TXx)
1895
18.9 C (66.0 F)
1896
32.2 C (90.0 F)
1897
34.4 C (93.9 F)
1898
35.6 C (96.1 F)
1899
36.7 C (98.1 F)
1900
36.7 C (98.1 F)
1901
34.4 C (93.9 F)
1902
30.6 C (87.1 F)
1903
32.8 C (91.0 F)
1904
31.7 C (89.1 F)
1905
33.3 C (91.9 F)
1906
32.2 C (90.0 F)
1907
32.2 C (90.0 F)
1908
31.7 C (89.1 F)
1909
36.1 C (97.0 F)
1910
36.1 C (97.0 F)
1911
39.4 C (102.9 F)
1912
33.9 C (93.0 F)
1913
35.6 C (96.1 F)
1914
34.4 C (93.9 F)
1915
31.7 C (89.1 F)
1916
37.8 C (100.0 F)
1917
36.1 C (97.0 F)
1918
37.8 C (100.0 F)
1919
35.0 C (95.0 F)
1920
32.8 C (91.0 F)
1921
35.6 C (96.1 F)
1922
35.0 C (95.0 F)
1923
35.0 C (95.0 F)
1924
33.3 C (91.9 F)
1925
34.4 C (93.9 F)
1926
34.4 C (93.9 F)
1927
33.9 C (93.0 F)
1928
32.2 C (90.0 F)
1929
33.9 C (93.0 F)
1930
34.4 C (93.9 F)
1931
38.3 C (100.9 F)
1932
35.6 C (96.1 F)
1933
37.2 C (99.0 F)
1934
35.6 C (96.1 F)
1935
32.2 C (90.0 F)
1936
40.6 C (105.1 F)
1937
35.0 C (95.0 F)
1938
34.4 C (93.9 F)
1939
35.0 C (95.0 F)
1940
32.2 C (90.0 F)
1941
35.0 C (95.0 F)
1942
34.4 C (93.9 F)
1943
33.9 C (93.0 F)
1944
35.6 C (96.1 F)
1945
31.7 C (89.1 F)
1946
34.4 C (93.9 F)
1947
33.9 C (93.0 F)
1948
38.3 C (100.9 F)
1949
37.2 C (99.0 F)
1950
31.7 C (89.1 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
33.3 C (91.9 F)
1957
32.2 C (90.0 F)
1958
32.2 C (90.0 F)
1959
33.9 C (93.0 F)
1960
31.7 C (89.1 F)
1961
32.8 C (91.0 F)
1962
33.3 C (91.9 F)
1963
33.3 C (91.9 F)
1964
36.1 C (97.0 F)
1965
33.3 C (91.9 F)
1966
36.1 C (97.0 F)
1967
31.1 C (88.0 F)
1968
4.4 C (39.9 F)
Coldest night (TNn)
The coldest night of the year at Toronto Agincourt, 1895 to 1968. The record is -31.7 C (-25.1 F) in 1896, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Toronto Agincourt by year
Year
Coldest night (TNn)
1895
-20.6 C (-5.1 F)
1896
-31.7 C (-25.1 F)
1897
-28.3 C (-18.9 F)
1898
-27.2 C (-17.0 F)
1899
-27.2 C (-17.0 F)
1900
-30.6 C (-23.1 F)
1901
-25.6 C (-14.1 F)
1902
-23.3 C (-9.9 F)
1903
-26.1 C (-15.0 F)
1904
-29.4 C (-20.9 F)
1905
-26.1 C (-15.0 F)
1906
-26.7 C (-16.1 F)
1907
-26.1 C (-15.0 F)
1908
-22.2 C (-8.0 F)
1909
-22.8 C (-9.0 F)
1910
-26.7 C (-16.1 F)
1911
-22.2 C (-8.0 F)
1912
-31.1 C (-24.0 F)
1913
-21.1 C (-6.0 F)
1914
-31.7 C (-25.1 F)
1915
-24.4 C (-11.9 F)
1916
-27.2 C (-17.0 F)
1917
-28.3 C (-18.9 F)
1918
-31.1 C (-24.0 F)
1919
-23.3 C (-9.9 F)
1920
-29.4 C (-20.9 F)
1921
-22.2 C (-8.0 F)
1922
-23.9 C (-11.0 F)
1923
-27.2 C (-17.0 F)
1924
-21.7 C (-7.1 F)
1925
-28.3 C (-18.9 F)
1926
-21.7 C (-7.1 F)
1927
-28.3 C (-18.9 F)
1928
-22.8 C (-9.0 F)
1929
-22.2 C (-8.0 F)
1930
-23.9 C (-11.0 F)
1931
-22.2 C (-8.0 F)
1932
-20.0 C (-4.0 F)
1933
-31.1 C (-24.0 F)
1934
-31.7 C (-25.1 F)
1935
-25.6 C (-14.1 F)
1936
-20.6 C (-5.1 F)
1937
-18.9 C (-2.0 F)
1938
-22.2 C (-8.0 F)
1939
-25.0 C (-13.0 F)
1940
-23.3 C (-9.9 F)
1941
-23.3 C (-9.9 F)
1942
-30.0 C (-22.0 F)
1943
-31.1 C (-24.0 F)
1944
-22.8 C (-9.0 F)
1945
-28.9 C (-20.0 F)
1946
-24.4 C (-11.9 F)
1947
-22.2 C (-8.0 F)
1948
-27.8 C (-18.0 F)
1949
-20.0 C (-4.0 F)
1950
-26.1 C (-15.0 F)
1951
-25.6 C (-14.1 F)
1952
-24.4 C (-11.9 F)
1953
-18.3 C (-0.9 F)
1954
-23.9 C (-11.0 F)
1955
-25.6 C (-14.1 F)
1956
-20.0 C (-4.0 F)
1957
-26.1 C (-15.0 F)
1958
-23.9 C (-11.0 F)
1959
-25.0 C (-13.0 F)
1960
-24.4 C (-11.9 F)
1961
-24.4 C (-11.9 F)
1962
-24.4 C (-11.9 F)
1963
-24.4 C (-11.9 F)
1964
-22.8 C (-9.0 F)
1965
-23.9 C (-11.0 F)
1966
-22.8 C (-9.0 F)
1967
-26.7 C (-16.1 F)
1968
-25.6 C (-14.1 F)
Wettest day (Rx1day)
The wettest day of the year at Toronto Agincourt, 1895 to 1968. The record is 126.0 mm (5.0 in) in 1915, marked on the chart; the median year is 43.1 mm (1.7 in).
Wettest day (Rx1day) at Toronto Agincourt by year
Year
Wettest day (Rx1day)
1895
37.1 mm (1.5 in)
1896
6.4 mm (0.25 in)
1897
40.6 mm (1.6 in)
1898
46.2 mm (1.8 in)
1899
58.2 mm (2.3 in)
1900
43.2 mm (1.7 in)
1901
39.4 mm (1.6 in)
1902
42.9 mm (1.7 in)
1903
38.6 mm (1.5 in)
1904
54.9 mm (2.2 in)
1905
62.7 mm (2.5 in)
1906
52.6 mm (2.1 in)
1907
35.3 mm (1.4 in)
1908
12.7 mm (0.5 in)
1909
47.0 mm (1.9 in)
1910
29.7 mm (1.2 in)
1911
38.1 mm (1.5 in)
1912
39.9 mm (1.6 in)
1913
43.9 mm (1.7 in)
1914
33.0 mm (1.3 in)
1915
126.0 mm (5.0 in)
1916
70.4 mm (2.8 in)
1917
40.6 mm (1.6 in)
1918
48.5 mm (1.9 in)
1919
67.3 mm (2.6 in)
1920
31.2 mm (1.2 in)
1921
40.9 mm (1.6 in)
1922
44.5 mm (1.8 in)
1923
37.6 mm (1.5 in)
1924
36.3 mm (1.4 in)
1925
55.6 mm (2.2 in)
1926
50.8 mm (2.0 in)
1927
48.0 mm (1.9 in)
1928
44.5 mm (1.8 in)
1929
55.4 mm (2.2 in)
1930
37.6 mm (1.5 in)
1931
38.9 mm (1.5 in)
1932
80.0 mm (3.1 in)
1933
22.9 mm (0.9 in)
1934
46.0 mm (1.8 in)
1935
52.6 mm (2.1 in)
1936
35.3 mm (1.4 in)
1937
76.7 mm (3.0 in)
1938
35.1 mm (1.4 in)
1939
64.0 mm (2.5 in)
1940
38.1 mm (1.5 in)
1941
56.4 mm (2.2 in)
1942
61.5 mm (2.4 in)
1943
36.1 mm (1.4 in)
1944
45.7 mm (1.8 in)
1945
37.8 mm (1.5 in)
1946
32.0 mm (1.3 in)
1947
61.0 mm (2.4 in)
1948
36.3 mm (1.4 in)
1949
51.1 mm (2.0 in)
1950
46.2 mm (1.8 in)
1951
56.4 mm (2.2 in)
1952
35.1 mm (1.4 in)
1953
33.3 mm (1.3 in)
1954
84.6 mm (3.3 in)
1955
83.3 mm (3.3 in)
1956
51.3 mm (2.0 in)
1957
74.9 mm (2.9 in)
1958
34.3 mm (1.4 in)
1959
40.4 mm (1.6 in)
1960
41.7 mm (1.6 in)
1961
31.8 mm (1.3 in)
1962
57.7 mm (2.3 in)
1963
24.1 mm (0.9 in)
1964
71.1 mm (2.8 in)
1965
80.3 mm (3.2 in)
1966
36.1 mm (1.4 in)
1967
41.1 mm (1.6 in)
1968
35.6 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Toronto Agincourt, 1895 to 1968. The record is 143.7 mm (5.7 in) in 1915, marked on the chart; the median year is 65.2 mm (2.6 in).
Wettest five days (Rx5day) at Toronto Agincourt by year
Year
Wettest five days (Rx5day)
1895
40.7 mm (1.6 in)
1896
10.2 mm (0.4 in)
1897
79.2 mm (3.1 in)
1898
84.1 mm (3.3 in)
1899
67.3 mm (2.6 in)
1900
53.3 mm (2.1 in)
1901
64.0 mm (2.5 in)
1902
57.4 mm (2.3 in)
1903
60.9 mm (2.4 in)
1904
66.3 mm (2.6 in)
1905
72.4 mm (2.9 in)
1906
52.6 mm (2.1 in)
1907
54.6 mm (2.1 in)
1908
25.4 mm (1.0 in)
1909
48.6 mm (1.9 in)
1910
56.1 mm (2.2 in)
1911
61.2 mm (2.4 in)
1912
102.0 mm (4.0 in)
1913
56.7 mm (2.2 in)
1914
45.9 mm (1.8 in)
1915
143.7 mm (5.7 in)
1916
74.5 mm (2.9 in)
1917
63.2 mm (2.5 in)
1918
59.7 mm (2.4 in)
1919
67.3 mm (2.6 in)
1920
39.6 mm (1.6 in)
1921
72.6 mm (2.9 in)
1922
57.6 mm (2.3 in)
1923
51.8 mm (2.0 in)
1924
67.2 mm (2.6 in)
1925
60.9 mm (2.4 in)
1926
89.4 mm (3.5 in)
1927
71.1 mm (2.8 in)
1928
67.3 mm (2.6 in)
1929
86.6 mm (3.4 in)
1930
53.1 mm (2.1 in)
1931
50.1 mm (2.0 in)
1932
94.5 mm (3.7 in)
1933
29.7 mm (1.2 in)
1934
76.4 mm (3.0 in)
1935
74.8 mm (2.9 in)
1936
53.2 mm (2.1 in)
1937
85.1 mm (3.4 in)
1938
69.0 mm (2.7 in)
1939
70.9 mm (2.8 in)
1940
62.2 mm (2.4 in)
1941
75.7 mm (3.0 in)
1942
79.8 mm (3.1 in)
1943
54.1 mm (2.1 in)
1944
69.6 mm (2.7 in)
1945
92.4 mm (3.6 in)
1946
45.0 mm (1.8 in)
1947
92.7 mm (3.6 in)
1948
63.2 mm (2.5 in)
1949
56.9 mm (2.2 in)
1950
94.2 mm (3.7 in)
1951
81.6 mm (3.2 in)
1952
59.5 mm (2.3 in)
1953
42.4 mm (1.7 in)
1954
127.3 mm (5.0 in)
1955
107.2 mm (4.2 in)
1956
83.8 mm (3.3 in)
1957
104.6 mm (4.1 in)
1958
58.6 mm (2.3 in)
1959
46.4 mm (1.8 in)
1960
91.5 mm (3.6 in)
1961
52.0 mm (2.0 in)
1962
70.1 mm (2.8 in)
1963
33.5 mm (1.3 in)
1964
132.4 mm (5.2 in)
1965
96.3 mm (3.8 in)
1966
71.0 mm (2.8 in)
1967
51.8 mm (2.0 in)
1968
40.9 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Toronto Agincourt, 1895 to 1968. The record is 46 days in 1904, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Toronto Agincourt by year
Year
Longest dry spell (CDD)
1895
6 days
1896
11 days
1897
23 days
1898
23 days
1899
21 days
1900
21 days
1901
16 days
1902
20 days
1903
19 days
1904
46 days
1905
22 days
1906
17 days
1907
18 days
1908
13 days
1909
14 days
1910
17 days
1911
18 days
1912
13 days
1913
20 days
1914
16 days
1915
18 days
1916
34 days
1917
24 days
1918
17 days
1919
17 days
1920
21 days
1921
11 days
1922
18 days
1923
15 days
1924
36 days
1925
15 days
1926
12 days
1927
18 days
1928
14 days
1929
17 days
1930
23 days
1931
16 days
1932
18 days
1933
11 days
1934
17 days
1935
17 days
1936
24 days
1937
12 days
1938
15 days
1939
20 days
1940
11 days
1941
19 days
1942
22 days
1943
20 days
1944
18 days
1945
11 days
1946
17 days
1947
17 days
1948
23 days
1949
23 days
1950
15 days
1951
13 days
1952
26 days
1953
18 days
1954
26 days
1955
23 days
1956
15 days
1957
22 days
1958
23 days
1959
16 days
1960
27 days
1961
19 days
1962
24 days
1963
31 days
1964
27 days
1965
16 days
1966
23 days
1967
21 days
1968
7 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
66 years with a frost
Across 66 years with a frost, the median last spring frost at Toronto Agincourt falls on 10 May and the median first autumn frost on 10 October, which leaves a median of 155 days between them.
In 1935 to 1966 the median growing season was 159 days. That is 10 days more than in 1897 to 1928.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
Frost dates and growing season at Toronto Agincourt
Measure
Median, all years
Earliest period (1897 to 1928)
Recent period (1935 to 1966)
Recent against earliest
Fitted trend
Last spring frost
10 May
14 May
8 May
6 days earlier
-1.1 days per decade
First autumn frost
10 October
9 October
12 October
3 days later
+1.0 days per decade
Growing days
155 days
149 days
159 days
10 days more
+2.1 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
68 years, 1897 to 1967
A day with at least 44.8 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 116.1 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Toronto Agincourt: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
44.8 mm (1.8 in)
5 years
58.9 mm (2.3 in)
10 years
70.0 mm (2.8 in)
25 years
86.3 mm (3.4 in)
50 years
100.3 mm (3.9 in)
100 years
116.1 mm (4.6 in)
Longer than the 68 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, 68 years of values from 1897 to 1967.
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: 126.0 mm (5.0 in) in 1915; 84.6 mm (3.3 in) in 1954; 83.3 mm (3.3 in) in 1955.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Toronto Agincourt, at 1910 and 1924. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1910 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1924 ran 0.2 C (0.3 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Toronto Agincourt, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1910
+0.3
+0.5
likely
5
1924
+0.2
+0.3
possible
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 Toronto Agincourt standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Toronto Agincourt 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.