Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Calgary Int'l A. 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 Calgary Int'l A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.3 C (61.3 F)
-44.4 C (-47.9 F)
n/a
n/a
Feb
18.9 C (66.0 F)
-45.0 C (-49.0 F)
n/a
n/a
Mar
22.8 C (73.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-30.0 C (-22.0 F)
n/a
n/a
May
32.2 C (90.0 F)
-16.7 C (1.9 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
35.6 C (96.1 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-13.3 C (8.1 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-42.8 C (-45.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Calgary Int'l A still stand. 1954 holds the most, with 43.
Standing records at Calgary Int'l A by the year they were set
Year set
Standing records
1882
12
1884
9
1885
18
1886
15
1887
14
1888
9
1889
28
1890
24
1891
12
1892
18
1893
31
1894
19
1895
15
1896
28
1897
11
1898
13
1899
21
1900
21
1901
7
1902
10
1903
8
1904
7
1905
17
1906
21
1907
11
1908
6
1909
10
1910
22
1911
30
1912
13
1913
13
1914
16
1915
4
1916
18
1917
11
1918
18
1919
31
1920
3
1921
15
1922
12
1923
17
1924
23
1925
17
1926
22
1927
4
1928
17
1929
19
1930
21
1931
11
1932
5
1933
13
1934
28
1935
23
1936
35
1937
8
1938
6
1939
23
1940
16
1941
10
1942
18
1943
24
1944
13
1945
11
1946
7
1947
10
1948
13
1949
7
1950
14
1951
36
1952
4
1953
15
1954
43
1955
18
1956
19
1957
14
1958
8
1959
13
1960
4
1961
14
1962
11
1963
8
1964
8
1965
19
1966
8
1967
11
1968
16
1969
8
1970
11
1971
7
1972
14
1973
7
1974
5
1975
7
1976
7
1977
10
1978
9
1979
11
1980
16
1981
15
1982
2
1983
10
All-Time Record Progression
4 new records
4 all-time records were set at Calgary Int'l A between 3 August 1914 and 6 May 1981. Each dot is a new record.
When Calgary Int'l A set new all-time records
Date
Kind
Detail
1914-08-03
Record high maximum temperature
Record high maximum temperature 35.6 C (96.1 F)
1919-07-15
Record high maximum temperature
Record high maximum temperature 36.1 C (97.0 F)
1927-07-15
Record daily precipitation
Record daily precipitation 95.3 mm (3.8 in)
1981-05-06
Record daily snowfall
Record daily snowfall 48.4 cm (19.1 in)
Wettest Day of Each Month
Jul: 95.3 mm (3.8 in)
The wettest day on record for each calendar month at Calgary Int'l A. The most was 95.3 mm (3.8 in) on 15 July 1927.
Record daily precipitation for each month at Calgary Int'l A
Month
Record daily precipitation (mm)
Date
Jan
25.4 mm (1.0 in)
3 January 1913
Feb
27.7 mm (1.1 in)
10 February 1951
Mar
24.1 mm (0.9 in)
13 March 1889
Apr
45.7 mm (1.8 in)
21 April 1932
May
65.0 mm (2.6 in)
18 May 1902
Jun
79.2 mm (3.1 in)
1 June 1932
Jul
95.3 mm (3.8 in)
15 July 1927
Aug
80.8 mm (3.2 in)
25 August 1945
Sep
67.3 mm (2.6 in)
7 September 1926
Oct
45.7 mm (1.8 in)
1 October 1915
Nov
35.6 mm (1.4 in)
13 November 1914
Dec
21.8 mm (0.9 in)
11 December 1889
Period of Record Coverage
1881 to 1983
Complete yearUnder 90 percent of days
102 years of record at Calgary Int'l A, 1881 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1881, 1882, 1884.
Cooler than the station meanWarmer than the station mean
One stripe for each of 98 complete years at Calgary Int'l A, 1885 to 1983. Blue stripes are years cooler than the station's own mean of 3.6 C (38.4 F); red stripes are warmer. The coolest year was 1951, at 1.2 C (34.1 F), and the warmest was 1981, at 5.8 C (42.5 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Calgary Int'l A as warming stripes, 1885 to 1983
Year
Annual mean temperature
Difference from the station mean
1885
4.3 C
+0.69 C
1886
3.3 C
-0.26 C
1887
1.2 C
-2.35 C
1888
2.7 C
-0.92 C
1889
4.7 C
+1.15 C
1890
2.8 C
-0.78 C
1891
3.8 C
+0.25 C
1892
3.4 C
-0.16 C
1894
3.8 C
+0.22 C
1895
2.9 C
-0.69 C
1896
2.2 C
-1.42 C
1897
2.8 C
-0.75 C
1898
3.2 C
-0.42 C
1899
1.5 C
-2.10 C
1900
3.6 C
+0.05 C
1901
4.0 C
+0.40 C
1902
2.7 C
-0.85 C
1903
3.1 C
-0.50 C
1904
2.7 C
-0.86 C
1905
3.9 C
+0.33 C
1906
4.1 C
+0.48 C
1907
2.6 C
-0.96 C
1908
4.7 C
+1.07 C
1909
2.3 C
-1.28 C
1910
4.7 C
+1.11 C
1911
2.0 C
-1.57 C
1912
4.1 C
+0.55 C
1913
4.5 C
+0.87 C
1914
4.8 C
+1.17 C
1915
5.4 C
+1.85 C
1916
3.0 C
-0.57 C
1917
3.4 C
-0.21 C
1918
5.3 C
+1.74 C
1919
4.1 C
+0.53 C
1920
3.9 C
+0.32 C
1921
4.3 C
+0.69 C
1922
3.9 C
+0.31 C
1923
4.9 C
+1.33 C
1924
4.0 C
+0.38 C
1925
4.2 C
+0.60 C
1926
5.0 C
+1.45 C
1927
2.1 C
-1.52 C
1928
5.2 C
+1.65 C
1929
3.7 C
+0.07 C
1930
4.6 C
+1.04 C
1931
5.4 C
+1.80 C
1932
3.1 C
-0.49 C
1933
3.0 C
-0.61 C
1934
5.4 C
+1.81 C
1935
2.9 C
-0.73 C
1936
3.0 C
-0.59 C
1937
2.7 C
-0.87 C
1938
4.5 C
+0.94 C
1939
4.3 C
+0.72 C
1940
3.6 C
+0.06 C
1941
4.8 C
+1.26 C
1942
3.9 C
+0.31 C
1943
4.4 C
+0.84 C
1944
4.9 C
+1.33 C
1945
2.8 C
-0.77 C
1946
4.1 C
+0.55 C
1947
3.6 C
+0.04 C
1948
3.0 C
-0.63 C
1949
3.2 C
-0.36 C
1950
1.3 C
-2.30 C
1951
1.2 C
-2.41 C
1952
3.9 C
+0.28 C
1953
4.3 C
+0.74 C
1954
2.9 C
-0.67 C
1955
1.6 C
-2.02 C
1956
2.9 C
-0.66 C
1957
3.4 C
-0.22 C
1958
4.4 C
+0.84 C
1959
3.3 C
-0.29 C
1960
4.1 C
+0.47 C
1961
4.7 C
+1.08 C
1962
4.4 C
+0.86 C
1963
4.9 C
+1.35 C
1964
3.6 C
-0.03 C
1965
2.3 C
-1.25 C
1966
2.4 C
-1.15 C
1967
3.4 C
-0.14 C
1968
3.1 C
-0.46 C
1969
2.5 C
-1.13 C
1970
3.1 C
-0.50 C
1971
3.2 C
-0.38 C
1972
2.0 C
-1.59 C
1973
3.5 C
-0.12 C
1974
4.1 C
+0.49 C
1975
2.8 C
-0.79 C
1976
5.2 C
+1.58 C
1977
4.0 C
+0.45 C
1978
2.7 C
-0.89 C
1979
3.2 C
-0.34 C
1980
4.0 C
+0.37 C
1981
5.8 C
+2.26 C
1982
2.3 C
-1.31 C
1983
4.2 C
+0.66 C
The fitted trend in annual mean temperature here over 1885 to 1983 is 0.01 C (-0.06 to 0.08) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.02 F (-0.11 to 0.15) per decade. The slope is a straight line fitted to 98 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Calgary Int'l A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.01 C (-0.06 to 0.08) per decade
0.02 F (-0.11 to 0.15) per decade
1885 to 1983
98
Not clearly different from zero
Mean daily maximum
-0.07 C (-0.17 to 0.02) per decade
-0.13 F (-0.30 to 0.03) per decade
1885 to 1983
98
Not clearly different from zero
Mean daily minimum
0.09 C (0.03 to 0.16) per decade
0.17 F (0.05 to 0.29) per decade
1885 to 1983
98
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
1881 to 1983
Yearly extremes at Calgary Int'l A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1919
32.5 C (90.5 F)
102
Coldest night (TNn)
-45.0 C (-49.0 F)
1893
-35.3 C (-31.5 F)
102
Wettest day (Rx1day)
95.3 mm (3.8 in)
1927
33.8 mm (1.3 in)
102
Wettest five days (Rx5day)
154.0 mm (6.1 in)
1927
57.7 mm (2.3 in)
102
Longest dry spell (CDD)
96 days
1892
34 days
102
Hottest day (TXx)
The hottest day of the year at Calgary Int'l A, 1881 to 1983. The record is 36.1 C (97.0 F) in 1919, marked on the chart; the median year is 32.5 C (90.5 F).
Hottest day (TXx) at Calgary Int'l A by year
Year
Hottest day (TXx)
1881
12.8 C (55.0 F)
1882
28.9 C (84.0 F)
1884
30.0 C (86.0 F)
1885
30.6 C (87.1 F)
1886
34.4 C (93.9 F)
1887
32.2 C (90.0 F)
1888
33.3 C (91.9 F)
1889
31.7 C (89.1 F)
1890
34.4 C (93.9 F)
1891
31.1 C (88.0 F)
1892
33.3 C (91.9 F)
1893
35.0 C (95.0 F)
1894
33.3 C (91.9 F)
1895
31.7 C (89.1 F)
1896
35.0 C (95.0 F)
1897
32.2 C (90.0 F)
1898
34.4 C (93.9 F)
1899
31.7 C (89.1 F)
1900
33.3 C (91.9 F)
1901
29.4 C (84.9 F)
1902
28.9 C (84.0 F)
1903
28.9 C (84.0 F)
1904
34.4 C (93.9 F)
1905
32.8 C (91.0 F)
1906
33.3 C (91.9 F)
1907
28.9 C (84.0 F)
1908
31.7 C (89.1 F)
1909
28.9 C (84.0 F)
1910
33.3 C (91.9 F)
1911
31.1 C (88.0 F)
1912
32.2 C (90.0 F)
1913
32.2 C (90.0 F)
1914
35.6 C (96.1 F)
1915
31.1 C (88.0 F)
1916
30.6 C (87.1 F)
1917
32.8 C (91.0 F)
1918
34.4 C (93.9 F)
1919
36.1 C (97.0 F)
1920
33.3 C (91.9 F)
1921
35.0 C (95.0 F)
1922
35.0 C (95.0 F)
1923
32.8 C (91.0 F)
1924
33.9 C (93.0 F)
1925
33.9 C (93.0 F)
1926
35.0 C (95.0 F)
1927
29.4 C (84.9 F)
1928
32.2 C (90.0 F)
1929
33.9 C (93.0 F)
1930
34.4 C (93.9 F)
1931
32.8 C (91.0 F)
1932
30.6 C (87.1 F)
1933
36.1 C (97.0 F)
1934
34.4 C (93.9 F)
1935
33.3 C (91.9 F)
1936
35.6 C (96.1 F)
1937
34.4 C (93.9 F)
1938
33.9 C (93.0 F)
1939
34.4 C (93.9 F)
1940
33.9 C (93.0 F)
1941
35.0 C (95.0 F)
1942
30.6 C (87.1 F)
1943
31.7 C (89.1 F)
1944
31.7 C (89.1 F)
1945
31.1 C (88.0 F)
1946
33.3 C (91.9 F)
1947
31.7 C (89.1 F)
1948
31.1 C (88.0 F)
1949
31.1 C (88.0 F)
1950
31.1 C (88.0 F)
1951
31.7 C (89.1 F)
1952
30.0 C (86.0 F)
1953
31.1 C (88.0 F)
1954
30.6 C (87.1 F)
1955
31.7 C (89.1 F)
1956
31.1 C (88.0 F)
1957
29.4 C (84.9 F)
1958
31.7 C (89.1 F)
1959
34.4 C (93.9 F)
1960
33.9 C (93.0 F)
1961
35.0 C (95.0 F)
1962
33.3 C (91.9 F)
1963
30.6 C (87.1 F)
1964
33.3 C (91.9 F)
1965
31.1 C (88.0 F)
1966
31.1 C (88.0 F)
1967
33.3 C (91.9 F)
1968
32.8 C (91.0 F)
1969
32.2 C (90.0 F)
1970
33.9 C (93.0 F)
1971
35.0 C (95.0 F)
1972
31.1 C (88.0 F)
1973
32.8 C (91.0 F)
1974
32.2 C (90.0 F)
1975
33.9 C (93.0 F)
1976
30.6 C (87.1 F)
1977
33.1 C (91.6 F)
1978
31.4 C (88.5 F)
1979
34.3 C (93.7 F)
1980
29.7 C (85.5 F)
1981
32.2 C (90.0 F)
1982
30.0 C (86.0 F)
1983
34.5 C (94.1 F)
Coldest night (TNn)
The coldest night of the year at Calgary Int'l A, 1881 to 1983. The record is -45.0 C (-49.0 F) in 1893, marked on the chart; the median year is -35.3 C (-31.5 F).
Coldest night (TNn) at Calgary Int'l A by year
Year
Coldest night (TNn)
1881
-30.6 C (-23.1 F)
1882
-40.6 C (-41.1 F)
1884
-39.4 C (-38.9 F)
1885
-37.2 C (-35.0 F)
1886
-40.0 C (-40.0 F)
1887
-41.7 C (-43.1 F)
1888
-35.0 C (-31.0 F)
1889
-32.2 C (-26.0 F)
1890
-39.4 C (-38.9 F)
1891
-37.8 C (-36.0 F)
1892
-36.7 C (-34.1 F)
1893
-45.0 C (-49.0 F)
1894
-35.6 C (-32.1 F)
1895
-38.9 C (-38.0 F)
1896
-37.8 C (-36.0 F)
1897
-38.3 C (-36.9 F)
1898
-35.0 C (-31.0 F)
1899
-40.0 C (-40.0 F)
1900
-34.4 C (-29.9 F)
1901
-37.2 C (-35.0 F)
1902
-34.4 C (-29.9 F)
1903
-31.7 C (-25.1 F)
1904
-32.2 C (-26.0 F)
1905
-40.0 C (-40.0 F)
1906
-35.6 C (-32.1 F)
1907
-40.0 C (-40.0 F)
1908
-28.9 C (-20.0 F)
1909
-41.1 C (-42.0 F)
1910
-35.6 C (-32.1 F)
1911
-42.2 C (-44.0 F)
1912
-34.4 C (-29.9 F)
1913
-33.3 C (-27.9 F)
1914
-33.9 C (-29.0 F)
1915
-31.1 C (-24.0 F)
1916
-40.6 C (-41.1 F)
1917
-38.9 C (-38.0 F)
1918
-33.3 C (-27.9 F)
1919
-36.1 C (-33.0 F)
1920
-36.7 C (-34.1 F)
1921
-35.0 C (-31.0 F)
1922
-34.4 C (-29.9 F)
1923
-39.4 C (-38.9 F)
1924
-42.8 C (-45.0 F)
1925
-30.0 C (-22.0 F)
1926
-30.6 C (-23.1 F)
1927
-35.6 C (-32.1 F)
1928
-34.4 C (-29.9 F)
1929
-42.8 C (-45.0 F)
1930
-38.9 C (-38.0 F)
1931
-26.7 C (-16.1 F)
1932
-34.4 C (-29.9 F)
1933
-32.2 C (-26.0 F)
1934
-33.3 C (-27.9 F)
1935
-38.9 C (-38.0 F)
1936
-37.8 C (-36.0 F)
1937
-35.6 C (-32.1 F)
1938
-34.4 C (-29.9 F)
1939
-41.1 C (-42.0 F)
1940
-32.2 C (-26.0 F)
1941
-31.7 C (-25.1 F)
1942
-31.1 C (-24.0 F)
1943
-43.3 C (-45.9 F)
1944
-28.9 C (-20.0 F)
1945
-31.1 C (-24.0 F)
1946
-31.1 C (-24.0 F)
1947
-37.8 C (-36.0 F)
1948
-32.8 C (-27.0 F)
1949
-37.2 C (-35.0 F)
1950
-40.6 C (-41.1 F)
1951
-37.2 C (-35.0 F)
1952
-35.0 C (-31.0 F)
1953
-29.4 C (-20.9 F)
1954
-40.0 C (-40.0 F)
1955
-36.1 C (-33.0 F)
1956
-35.0 C (-31.0 F)
1957
-36.7 C (-34.1 F)
1958
-32.2 C (-26.0 F)
1959
-30.0 C (-22.0 F)
1960
-32.2 C (-26.0 F)
1961
-29.4 C (-20.9 F)
1962
-32.2 C (-26.0 F)
1963
-33.3 C (-27.9 F)
1964
-33.9 C (-29.0 F)
1965
-35.0 C (-31.0 F)
1966
-35.6 C (-32.1 F)
1967
-31.7 C (-25.1 F)
1968
-38.9 C (-38.0 F)
1969
-38.9 C (-38.0 F)
1970
-38.9 C (-38.0 F)
1971
-36.1 C (-33.0 F)
1972
-37.8 C (-36.0 F)
1973
-31.7 C (-25.1 F)
1974
-32.2 C (-26.0 F)
1975
-35.0 C (-31.0 F)
1976
-32.8 C (-27.0 F)
1977
-36.7 C (-34.1 F)
1978
-33.7 C (-28.7 F)
1979
-33.8 C (-28.8 F)
1980
-34.1 C (-29.4 F)
1981
-30.9 C (-23.6 F)
1982
-35.6 C (-32.1 F)
1983
-36.5 C (-33.7 F)
Wettest day (Rx1day)
The wettest day of the year at Calgary Int'l A, 1881 to 1983. The record is 95.3 mm (3.8 in) in 1927, marked on the chart; the median year is 33.8 mm (1.3 in).
Wettest day (Rx1day) at Calgary Int'l A by year
Year
Wettest day (Rx1day)
1881
4.6 mm (0.18 in)
1882
23.6 mm (0.9 in)
1884
50.0 mm (2.0 in)
1885
53.3 mm (2.1 in)
1886
34.0 mm (1.3 in)
1887
32.5 mm (1.3 in)
1888
38.1 mm (1.5 in)
1889
24.1 mm (0.9 in)
1890
25.1 mm (1.0 in)
1891
24.9 mm (1.0 in)
1892
30.5 mm (1.2 in)
1893
17.8 mm (0.7 in)
1894
40.6 mm (1.6 in)
1895
33.5 mm (1.3 in)
1896
30.5 mm (1.2 in)
1897
29.7 mm (1.2 in)
1898
32.3 mm (1.3 in)
1899
67.6 mm (2.7 in)
1900
37.6 mm (1.5 in)
1901
72.6 mm (2.9 in)
1902
70.6 mm (2.8 in)
1903
57.9 mm (2.3 in)
1904
24.4 mm (1.0 in)
1905
56.9 mm (2.2 in)
1906
41.1 mm (1.6 in)
1907
20.8 mm (0.8 in)
1908
47.8 mm (1.9 in)
1909
43.7 mm (1.7 in)
1910
23.9 mm (0.9 in)
1911
37.6 mm (1.5 in)
1912
37.1 mm (1.5 in)
1913
25.4 mm (1.0 in)
1914
35.6 mm (1.4 in)
1915
45.7 mm (1.8 in)
1916
17.3 mm (0.7 in)
1917
16.8 mm (0.7 in)
1918
18.8 mm (0.7 in)
1919
59.2 mm (2.3 in)
1920
38.4 mm (1.5 in)
1921
17.8 mm (0.7 in)
1922
27.4 mm (1.1 in)
1923
40.1 mm (1.6 in)
1924
42.7 mm (1.7 in)
1925
32.3 mm (1.3 in)
1926
67.3 mm (2.6 in)
1927
95.3 mm (3.8 in)
1928
77.2 mm (3.0 in)
1929
25.4 mm (1.0 in)
1930
32.3 mm (1.3 in)
1931
20.8 mm (0.8 in)
1932
79.2 mm (3.1 in)
1933
27.9 mm (1.1 in)
1934
43.7 mm (1.7 in)
1935
26.7 mm (1.1 in)
1936
16.8 mm (0.7 in)
1937
24.9 mm (1.0 in)
1938
42.7 mm (1.7 in)
1939
43.2 mm (1.7 in)
1940
29.2 mm (1.1 in)
1941
37.3 mm (1.5 in)
1942
55.1 mm (2.2 in)
1943
23.4 mm (0.9 in)
1944
38.6 mm (1.5 in)
1945
80.8 mm (3.2 in)
1946
40.6 mm (1.6 in)
1947
41.7 mm (1.6 in)
1948
30.0 mm (1.2 in)
1949
20.6 mm (0.8 in)
1950
67.6 mm (2.7 in)
1951
32.3 mm (1.3 in)
1952
43.7 mm (1.7 in)
1953
27.7 mm (1.1 in)
1954
75.9 mm (3.0 in)
1955
30.5 mm (1.2 in)
1956
36.3 mm (1.4 in)
1957
23.9 mm (0.9 in)
1958
30.7 mm (1.2 in)
1959
57.2 mm (2.3 in)
1960
19.6 mm (0.8 in)
1961
37.3 mm (1.5 in)
1962
29.0 mm (1.1 in)
1963
42.7 mm (1.7 in)
1964
40.1 mm (1.6 in)
1965
50.8 mm (2.0 in)
1966
54.9 mm (2.2 in)
1967
17.5 mm (0.7 in)
1968
39.9 mm (1.6 in)
1969
30.5 mm (1.2 in)
1970
75.9 mm (3.0 in)
1971
32.3 mm (1.3 in)
1972
35.3 mm (1.4 in)
1973
24.9 mm (1.0 in)
1974
29.5 mm (1.2 in)
1975
16.3 mm (0.6 in)
1976
30.0 mm (1.2 in)
1977
27.1 mm (1.1 in)
1978
55.3 mm (2.2 in)
1979
26.0 mm (1.0 in)
1980
38.2 mm (1.5 in)
1981
51.8 mm (2.0 in)
1982
24.8 mm (1.0 in)
1983
32.4 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Calgary Int'l A, 1881 to 1983. The record is 154.0 mm (6.1 in) in 1927, marked on the chart; the median year is 57.7 mm (2.3 in).
Wettest five days (Rx5day) at Calgary Int'l A by year
Year
Wettest five days (Rx5day)
1881
5.4 mm (0.21 in)
1882
50.3 mm (2.0 in)
1884
87.4 mm (3.4 in)
1885
73.7 mm (2.9 in)
1886
81.8 mm (3.2 in)
1887
53.6 mm (2.1 in)
1888
43.8 mm (1.7 in)
1889
39.1 mm (1.5 in)
1890
39.4 mm (1.6 in)
1891
37.4 mm (1.5 in)
1892
31.5 mm (1.2 in)
1893
34.7 mm (1.4 in)
1894
56.3 mm (2.2 in)
1895
64.3 mm (2.5 in)
1896
42.0 mm (1.7 in)
1897
100.3 mm (3.9 in)
1898
73.7 mm (2.9 in)
1899
103.6 mm (4.1 in)
1900
54.3 mm (2.1 in)
1901
89.9 mm (3.5 in)
1902
144.6 mm (5.7 in)
1903
94.5 mm (3.7 in)
1904
28.5 mm (1.1 in)
1905
68.9 mm (2.7 in)
1906
96.6 mm (3.8 in)
1907
33.8 mm (1.3 in)
1908
83.9 mm (3.3 in)
1909
56.9 mm (2.2 in)
1910
41.2 mm (1.6 in)
1911
71.2 mm (2.8 in)
1912
58.5 mm (2.3 in)
1913
47.0 mm (1.9 in)
1914
46.2 mm (1.8 in)
1915
53.3 mm (2.1 in)
1916
31.8 mm (1.3 in)
1917
23.9 mm (0.9 in)
1918
32.2 mm (1.3 in)
1919
76.7 mm (3.0 in)
1920
56.8 mm (2.2 in)
1921
30.5 mm (1.2 in)
1922
40.2 mm (1.6 in)
1923
104.9 mm (4.1 in)
1924
89.7 mm (3.5 in)
1925
67.8 mm (2.7 in)
1926
119.6 mm (4.7 in)
1927
154.0 mm (6.1 in)
1928
104.3 mm (4.1 in)
1929
51.3 mm (2.0 in)
1930
52.6 mm (2.1 in)
1931
33.0 mm (1.3 in)
1932
95.0 mm (3.7 in)
1933
45.7 mm (1.8 in)
1934
59.9 mm (2.4 in)
1935
50.6 mm (2.0 in)
1936
28.6 mm (1.1 in)
1937
46.2 mm (1.8 in)
1938
56.4 mm (2.2 in)
1939
104.4 mm (4.1 in)
1940
53.6 mm (2.1 in)
1941
62.2 mm (2.4 in)
1942
76.3 mm (3.0 in)
1943
34.5 mm (1.4 in)
1944
59.9 mm (2.4 in)
1945
86.5 mm (3.4 in)
1946
45.0 mm (1.8 in)
1947
64.3 mm (2.5 in)
1948
65.7 mm (2.6 in)
1949
22.6 mm (0.9 in)
1950
68.2 mm (2.7 in)
1951
88.6 mm (3.5 in)
1952
54.6 mm (2.1 in)
1953
59.4 mm (2.3 in)
1954
120.7 mm (4.8 in)
1955
40.4 mm (1.6 in)
1956
74.7 mm (2.9 in)
1957
38.6 mm (1.5 in)
1958
67.6 mm (2.7 in)
1959
85.9 mm (3.4 in)
1960
43.4 mm (1.7 in)
1961
66.4 mm (2.6 in)
1962
29.6 mm (1.2 in)
1963
54.4 mm (2.1 in)
1964
71.9 mm (2.8 in)
1965
72.7 mm (2.9 in)
1966
76.5 mm (3.0 in)
1967
27.5 mm (1.1 in)
1968
55.9 mm (2.2 in)
1969
79.0 mm (3.1 in)
1970
109.5 mm (4.3 in)
1971
76.0 mm (3.0 in)
1972
65.1 mm (2.6 in)
1973
59.2 mm (2.3 in)
1974
49.5 mm (1.9 in)
1975
42.5 mm (1.7 in)
1976
50.0 mm (2.0 in)
1977
35.3 mm (1.4 in)
1978
83.6 mm (3.3 in)
1979
34.9 mm (1.4 in)
1980
86.5 mm (3.4 in)
1981
76.3 mm (3.0 in)
1982
59.7 mm (2.4 in)
1983
38.3 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Calgary Int'l A, 1881 to 1983. The record is 96 days in 1892, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Calgary Int'l A by year
Year
Longest dry spell (CDD)
1881
16 days
1882
20 days
1884
61 days
1885
71 days
1886
37 days
1887
39 days
1888
38 days
1889
53 days
1890
27 days
1891
59 days
1892
96 days
1893
29 days
1894
55 days
1895
29 days
1896
21 days
1897
34 days
1898
31 days
1899
29 days
1900
40 days
1901
28 days
1902
30 days
1903
43 days
1904
36 days
1905
34 days
1906
40 days
1907
35 days
1908
38 days
1909
26 days
1910
37 days
1911
35 days
1912
41 days
1913
43 days
1914
30 days
1915
60 days
1916
16 days
1917
34 days
1918
22 days
1919
40 days
1920
38 days
1921
31 days
1922
54 days
1923
63 days
1924
24 days
1925
26 days
1926
28 days
1927
36 days
1928
32 days
1929
25 days
1930
29 days
1931
39 days
1932
20 days
1933
38 days
1934
31 days
1935
43 days
1936
40 days
1937
34 days
1938
34 days
1939
41 days
1940
31 days
1941
61 days
1942
25 days
1943
34 days
1944
31 days
1945
22 days
1946
29 days
1947
14 days
1948
47 days
1949
55 days
1950
29 days
1951
20 days
1952
41 days
1953
43 days
1954
40 days
1955
29 days
1956
29 days
1957
22 days
1958
31 days
1959
24 days
1960
37 days
1961
27 days
1962
29 days
1963
50 days
1964
43 days
1965
31 days
1966
28 days
1967
56 days
1968
58 days
1969
34 days
1970
22 days
1971
36 days
1972
25 days
1973
33 days
1974
29 days
1975
30 days
1976
32 days
1977
47 days
1978
26 days
1979
27 days
1980
42 days
1981
28 days
1982
24 days
1983
25 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
98 years with a frost
Across 98 years with a frost, the median last spring frost at Calgary Int'l A falls on 28 May and the median first autumn frost on 9 September, which leaves a median of 105 days between them.
In 1954 to 1983 the median growing season was 114 days. That is 19 days more than in 1885 to 1915.
Fitted over all years, the growing season changes by +3.5 days per decade at this station.
Frost dates and growing season at Calgary Int'l A
Measure
Median, all years
Earliest period (1885 to 1915)
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
28 May
3 June
22 May
12 days earlier
-1.5 days per decade
First autumn frost
9 September
4 September
13 September
9 days later
+2.0 days per decade
Growing days
105 days
95 days
114 days
19 days more
+3.5 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
99 years, 1885 to 1983
A day with at least 34.7 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 101.0 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Calgary Int'l A: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
34.7 mm (1.4 in)
5 years
49.4 mm (1.9 in)
10 years
60.3 mm (2.4 in)
25 years
75.4 mm (3.0 in)
50 years
87.7 mm (3.5 in)
100 years
101.0 mm (4.0 in)
Longer than the 99 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, 99 years of values from 1885 to 1983.
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: 95.3 mm (3.8 in) in 1927; 80.8 mm (3.2 in) in 1945; 79.2 mm (3.1 in) in 1932.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Calgary Int'l A, at 1931 and 1970. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1931 ran 0.6 C (1.0 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1970 ran 0.3 C (0.5 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Calgary Int'l A, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1931
-0.6
-1.0
likely
5
1970
+0.3
+0.5
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 Calgary Int'l A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Calgary Int'l A 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.