Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Rosetown Cda Epf. 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 Rosetown Cda Epf, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.0 C (50.0 F)
-47.2 C (-53.0 F)
n/a
n/a
Feb
8.3 C (46.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Mar
18.3 C (64.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-30.0 C (-22.0 F)
n/a
n/a
May
36.0 C (96.8 F)
-12.2 C (10.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
43.9 C (111.0 F)
-2.8 C (27.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
-3.0 C (26.6 F)
n/a
n/a
Sep
36.5 C (97.7 F)
-13.9 C (7.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-34.5 C (-30.1 F)
n/a
n/a
Dec
16.1 C (61.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Rosetown Cda Epf still stand. 1939 holds the most, with 60.
Standing records at Rosetown Cda Epf by the year they were set
Year set
Standing records
1937
48
1938
37
1939
60
1940
46
1941
37
1942
46
1943
50
1944
29
1945
46
1946
38
1947
26
1948
30
1949
45
1950
37
1951
51
1952
29
1953
27
1954
51
1955
24
1956
32
1957
25
1958
16
1959
24
1960
14
1961
33
1962
34
1963
33
1964
24
1965
34
1966
24
1967
21
1968
36
1969
32
1970
31
1971
23
1972
34
1973
31
1974
22
1975
17
1976
35
1977
41
1978
28
1979
26
1980
23
1981
14
Wettest Day of Each Month
Jun: 85.1 mm (3.4 in)
The wettest day on record for each calendar month at Rosetown Cda Epf. The most was 85.1 mm (3.4 in) on 17 June 1929.
Record daily precipitation for each month at Rosetown Cda Epf
Month
Record daily precipitation (mm)
Date
Jan
25.4 mm (1.0 in)
11 January 1969
Feb
15.2 mm (0.6 in)
11 February 1938
Mar
15.2 mm (0.6 in)
30 March 1967
Apr
34.0 mm (1.3 in)
26 April 1942
May
49.3 mm (1.9 in)
30 May 1968
Jun
85.1 mm (3.4 in)
17 June 1929
Jul
73.2 mm (2.9 in)
6 July 1935
Aug
54.6 mm (2.1 in)
16 August 1954
Sep
44.5 mm (1.8 in)
8 September 1919
Oct
53.8 mm (2.1 in)
12 October 1924
Nov
20.3 mm (0.8 in)
10 November 1929
Dec
22.9 mm (0.9 in)
29 December 1931
Period of Record Coverage
1937 to 1981
Complete yearUnder 90 percent of days
45 years of record at Rosetown Cda Epf, 1937 to 1981. 4 years have data for under 90 percent of days and are left out of rankings: 1937, 1946, 1947, 1981.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Rosetown Cda Epf, 1938 to 1980. Blue stripes are years cooler than the station's own mean of 1.9 C (35.4 F); red stripes are warmer. The coolest year was 1951, at -0.4 C (31.4 F), and the warmest was 1976, at 3.5 C (38.2 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Rosetown Cda Epf as warming stripes, 1938 to 1980
Year
Annual mean temperature
Difference from the station mean
1938
2.7 C
+0.86 C
1939
2.7 C
+0.84 C
1940
1.9 C
+0.02 C
1941
3.0 C
+1.14 C
1942
2.6 C
+0.74 C
1943
2.2 C
+0.30 C
1944
2.9 C
+1.05 C
1945
0.8 C
-1.09 C
1948
1.8 C
-0.12 C
1949
2.2 C
+0.36 C
1951
-0.4 C
-2.24 C
1952
2.5 C
+0.59 C
1954
2.1 C
+0.19 C
1955
-0.1 C
-1.97 C
1956
1.0 C
-0.86 C
1957
2.5 C
+0.61 C
1959
1.7 C
-0.18 C
1961
2.7 C
+0.82 C
1962
2.5 C
+0.57 C
1963
3.1 C
+1.21 C
1964
2.2 C
+0.36 C
1965
0.4 C
-1.47 C
1966
0.5 C
-1.36 C
1967
1.5 C
-0.39 C
1969
0.9 C
-1.00 C
1970
1.2 C
-0.69 C
1971
1.7 C
-0.23 C
1972
1.0 C
-0.88 C
1973
2.8 C
+0.91 C
1974
1.9 C
+0.05 C
1975
1.2 C
-0.64 C
1976
3.5 C
+1.58 C
1977
3.0 C
+1.09 C
1978
1.5 C
-0.41 C
1979
1.4 C
-0.46 C
1980
2.6 C
+0.74 C
The fitted trend in annual mean temperature here over 1938 to 1980 is -0.1 C (-0.3 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.6 to 0.3) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Rosetown Cda Epf
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.3 to 0.2) per decade
-0.1 F (-0.6 to 0.3) per decade
1938 to 1980
36
Not clearly different from zero
Mean daily maximum
-0.3 C (-0.6 to 0.1) per decade
-0.5 F (-1.0 to 0.1) per decade
1938 to 1980
36
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.2 to 0.6) per decade
1938 to 1980
36
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
1916 to 1981
Yearly extremes at Rosetown Cda Epf: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1937
36.1 C (97.0 F)
45
Coldest night (TNn)
-47.2 C (-53.0 F)
1943
-38.9 C (-38.0 F)
45
Wettest day (Rx1day)
85.1 mm (3.4 in)
1929
30.5 mm (1.2 in)
66
Wettest five days (Rx5day)
100.6 mm (4.0 in)
1916
48.6 mm (1.9 in)
66
Longest dry spell (CDD)
72 days
1948
32 days
66
Hottest day (TXx)
The hottest day of the year at Rosetown Cda Epf, 1916 to 1981. The record is 43.9 C (111.0 F) in 1937, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Rosetown Cda Epf by year
Year
Hottest day (TXx)
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
43.9 C (111.0 F)
1938
36.1 C (97.0 F)
1939
38.9 C (102.0 F)
1940
39.4 C (102.9 F)
1941
42.2 C (108.0 F)
1942
33.9 C (93.0 F)
1943
40.0 C (104.0 F)
1944
36.1 C (97.0 F)
1945
36.1 C (97.0 F)
1946
37.2 C (99.0 F)
1947
38.9 C (102.0 F)
1948
36.1 C (97.0 F)
1949
43.3 C (109.9 F)
1950
36.1 C (97.0 F)
1951
33.9 C (93.0 F)
1952
32.8 C (91.0 F)
1953
36.7 C (98.1 F)
1954
32.2 C (90.0 F)
1955
36.7 C (98.1 F)
1956
35.6 C (96.1 F)
1957
36.1 C (97.0 F)
1958
36.7 C (98.1 F)
1959
36.1 C (97.0 F)
1960
33.9 C (93.0 F)
1961
38.9 C (102.0 F)
1962
32.8 C (91.0 F)
1963
35.6 C (96.1 F)
1964
34.4 C (93.9 F)
1965
35.6 C (96.1 F)
1966
33.9 C (93.0 F)
1967
35.6 C (96.1 F)
1968
33.3 C (91.9 F)
1969
35.6 C (96.1 F)
1970
36.7 C (98.1 F)
1971
37.8 C (100.0 F)
1972
35.0 C (95.0 F)
1973
36.1 C (97.0 F)
1974
36.1 C (97.0 F)
1975
36.1 C (97.0 F)
1976
35.6 C (96.1 F)
1977
32.8 C (91.0 F)
1978
36.5 C (97.7 F)
1979
36.5 C (97.7 F)
1980
36.0 C (96.8 F)
1981
7.0 C (44.6 F)
Coldest night (TNn)
The coldest night of the year at Rosetown Cda Epf, 1916 to 1981. The record is -47.2 C (-53.0 F) in 1943, marked on the chart; the median year is -38.9 C (-38.0 F).
Coldest night (TNn) at Rosetown Cda Epf by year
Year
Coldest night (TNn)
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
n/a
1921
n/a
1922
n/a
1923
n/a
1924
n/a
1925
n/a
1926
n/a
1927
n/a
1928
n/a
1929
n/a
1930
n/a
1931
n/a
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
-36.1 C (-33.0 F)
1938
-39.4 C (-38.9 F)
1939
-41.1 C (-42.0 F)
1940
-40.6 C (-41.1 F)
1941
-37.8 C (-36.0 F)
1942
-35.6 C (-32.1 F)
1943
-47.2 C (-53.0 F)
1944
-40.0 C (-40.0 F)
1945
-37.8 C (-36.0 F)
1946
-35.6 C (-32.1 F)
1947
-28.9 C (-20.0 F)
1948
-41.1 C (-42.0 F)
1949
-41.7 C (-43.1 F)
1950
-45.6 C (-50.1 F)
1951
-38.9 C (-38.0 F)
1952
-37.2 C (-35.0 F)
1953
-38.9 C (-38.0 F)
1954
-42.8 C (-45.0 F)
1955
-37.8 C (-36.0 F)
1956
-42.2 C (-44.0 F)
1957
-35.6 C (-32.1 F)
1958
-36.1 C (-33.0 F)
1959
-37.2 C (-35.0 F)
1960
-35.0 C (-31.0 F)
1961
-36.7 C (-34.1 F)
1962
-39.4 C (-38.9 F)
1963
-35.0 C (-31.0 F)
1964
-38.3 C (-36.9 F)
1965
-38.9 C (-38.0 F)
1966
-40.6 C (-41.1 F)
1967
-40.6 C (-41.1 F)
1968
-37.8 C (-36.0 F)
1969
-45.0 C (-49.0 F)
1970
-41.7 C (-43.1 F)
1971
-38.9 C (-38.0 F)
1972
-42.8 C (-45.0 F)
1973
-35.6 C (-32.1 F)
1974
-41.1 C (-42.0 F)
1975
-35.6 C (-32.1 F)
1976
-38.9 C (-38.0 F)
1977
-40.5 C (-40.9 F)
1978
-39.5 C (-39.1 F)
1979
-38.0 C (-36.4 F)
1980
-35.0 C (-31.0 F)
1981
-33.0 C (-27.4 F)
Wettest day (Rx1day)
The wettest day of the year at Rosetown Cda Epf, 1916 to 1981. The record is 85.1 mm (3.4 in) in 1929, marked on the chart; the median year is 30.5 mm (1.2 in).
Wettest day (Rx1day) at Rosetown Cda Epf by year
Year
Wettest day (Rx1day)
1916
48.3 mm (1.9 in)
1917
15.7 mm (0.6 in)
1918
35.8 mm (1.4 in)
1919
44.5 mm (1.8 in)
1920
38.1 mm (1.5 in)
1921
30.5 mm (1.2 in)
1922
36.8 mm (1.4 in)
1923
32.5 mm (1.3 in)
1924
53.8 mm (2.1 in)
1925
40.6 mm (1.6 in)
1926
26.7 mm (1.1 in)
1927
46.0 mm (1.8 in)
1928
37.6 mm (1.5 in)
1929
85.1 mm (3.4 in)
1930
29.0 mm (1.1 in)
1931
39.9 mm (1.6 in)
1932
25.4 mm (1.0 in)
1933
20.3 mm (0.8 in)
1934
29.0 mm (1.1 in)
1935
73.2 mm (2.9 in)
1936
20.6 mm (0.8 in)
1937
27.9 mm (1.1 in)
1938
60.7 mm (2.4 in)
1939
38.1 mm (1.5 in)
1940
28.4 mm (1.1 in)
1941
17.8 mm (0.7 in)
1942
34.0 mm (1.3 in)
1943
20.6 mm (0.8 in)
1944
15.2 mm (0.6 in)
1945
28.4 mm (1.1 in)
1946
25.4 mm (1.0 in)
1947
29.2 mm (1.1 in)
1948
21.1 mm (0.8 in)
1949
27.9 mm (1.1 in)
1950
28.7 mm (1.1 in)
1951
25.9 mm (1.0 in)
1952
28.2 mm (1.1 in)
1953
39.4 mm (1.6 in)
1954
54.6 mm (2.1 in)
1955
59.7 mm (2.4 in)
1956
23.1 mm (0.9 in)
1957
21.8 mm (0.9 in)
1958
24.1 mm (0.9 in)
1959
30.0 mm (1.2 in)
1960
41.9 mm (1.6 in)
1961
12.4 mm (0.5 in)
1962
34.5 mm (1.4 in)
1963
42.2 mm (1.7 in)
1964
31.2 mm (1.2 in)
1965
31.2 mm (1.2 in)
1966
40.1 mm (1.6 in)
1967
39.4 mm (1.6 in)
1968
49.3 mm (1.9 in)
1969
30.5 mm (1.2 in)
1970
34.8 mm (1.4 in)
1971
34.8 mm (1.4 in)
1972
21.6 mm (0.9 in)
1973
42.2 mm (1.7 in)
1974
29.2 mm (1.1 in)
1975
30.5 mm (1.2 in)
1976
27.7 mm (1.1 in)
1977
44.5 mm (1.8 in)
1978
22.0 mm (0.9 in)
1979
15.0 mm (0.6 in)
1980
33.6 mm (1.3 in)
1981
3.0 mm (0.12 in)
Wettest five days (Rx5day)
The wettest five days of the year at Rosetown Cda Epf, 1916 to 1981. The record is 100.6 mm (4.0 in) in 1916, marked on the chart; the median year is 48.6 mm (1.9 in).
Wettest five days (Rx5day) at Rosetown Cda Epf by year
Year
Wettest five days (Rx5day)
1916
100.6 mm (4.0 in)
1917
35.0 mm (1.4 in)
1918
41.6 mm (1.6 in)
1919
63.6 mm (2.5 in)
1920
46.5 mm (1.8 in)
1921
60.0 mm (2.4 in)
1922
60.2 mm (2.4 in)
1923
60.7 mm (2.4 in)
1924
56.4 mm (2.2 in)
1925
42.6 mm (1.7 in)
1926
30.3 mm (1.2 in)
1927
51.3 mm (2.0 in)
1928
56.5 mm (2.2 in)
1929
85.1 mm (3.4 in)
1930
44.0 mm (1.7 in)
1931
48.8 mm (1.9 in)
1932
29.2 mm (1.1 in)
1933
25.4 mm (1.0 in)
1934
37.6 mm (1.5 in)
1935
81.1 mm (3.2 in)
1936
26.2 mm (1.0 in)
1937
48.2 mm (1.9 in)
1938
95.6 mm (3.8 in)
1939
52.1 mm (2.1 in)
1940
37.0 mm (1.5 in)
1941
27.2 mm (1.1 in)
1942
85.1 mm (3.4 in)
1943
34.1 mm (1.3 in)
1944
33.1 mm (1.3 in)
1945
41.3 mm (1.6 in)
1946
54.8 mm (2.2 in)
1947
41.2 mm (1.6 in)
1948
40.4 mm (1.6 in)
1949
35.7 mm (1.4 in)
1950
45.2 mm (1.8 in)
1951
60.3 mm (2.4 in)
1952
41.5 mm (1.6 in)
1953
54.6 mm (2.1 in)
1954
63.3 mm (2.5 in)
1955
84.1 mm (3.3 in)
1956
45.1 mm (1.8 in)
1957
30.0 mm (1.2 in)
1958
62.2 mm (2.4 in)
1959
65.6 mm (2.6 in)
1960
48.2 mm (1.9 in)
1961
23.9 mm (0.9 in)
1962
57.5 mm (2.3 in)
1963
69.1 mm (2.7 in)
1964
49.1 mm (1.9 in)
1965
48.8 mm (1.9 in)
1966
74.2 mm (2.9 in)
1967
57.9 mm (2.3 in)
1968
64.1 mm (2.5 in)
1969
52.8 mm (2.1 in)
1970
68.6 mm (2.7 in)
1971
48.3 mm (1.9 in)
1972
41.9 mm (1.6 in)
1973
46.3 mm (1.8 in)
1974
54.6 mm (2.1 in)
1975
47.5 mm (1.9 in)
1976
56.7 mm (2.2 in)
1977
54.1 mm (2.1 in)
1978
24.4 mm (1.0 in)
1979
22.5 mm (0.9 in)
1980
41.6 mm (1.6 in)
1981
6.0 mm (0.24 in)
Longest dry spell (CDD)
The longest dry spell of the year at Rosetown Cda Epf, 1916 to 1981. The record is 72 days in 1948, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Rosetown Cda Epf by year
Year
Longest dry spell (CDD)
1916
30 days
1917
33 days
1918
42 days
1919
23 days
1920
42 days
1921
26 days
1922
33 days
1923
34 days
1924
21 days
1925
25 days
1926
15 days
1927
25 days
1928
32 days
1929
48 days
1930
42 days
1931
67 days
1932
28 days
1933
22 days
1934
32 days
1935
38 days
1936
32 days
1937
37 days
1938
30 days
1939
42 days
1940
23 days
1941
32 days
1942
42 days
1943
27 days
1944
27 days
1945
29 days
1946
31 days
1947
16 days
1948
72 days
1949
44 days
1950
29 days
1951
20 days
1952
44 days
1953
41 days
1954
36 days
1955
33 days
1956
30 days
1957
68 days
1958
25 days
1959
40 days
1960
54 days
1961
41 days
1962
28 days
1963
20 days
1964
34 days
1965
53 days
1966
25 days
1967
34 days
1968
27 days
1969
27 days
1970
24 days
1971
30 days
1972
28 days
1973
43 days
1974
29 days
1975
28 days
1976
50 days
1977
32 days
1978
33 days
1979
30 days
1980
38 days
1981
29 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Rosetown Cda Epf falls on 30 May and the median first autumn frost on 6 September, which leaves a median of 99 days between them.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
Frost dates and growing season at Rosetown Cda Epf
Measure
Median, all years
Earliest period
Recent period (1944 to 1980)
Recent against earliest
Fitted trend
Last spring frost
30 May
n/a
28 May
n/a
-4.5 days per decade
First autumn frost
6 September
n/a
6 September
n/a
-2.6 days per decade
Growing days
99 days
n/a
104 days
n/a
+1.8 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
57 years, 1917 to 1980
A day with at least 31.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 80.6 mm (3.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Rosetown Cda Epf: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.4 mm (1.2 in)
5 years
43.5 mm (1.7 in)
10 years
52.0 mm (2.0 in)
25 years
63.1 mm (2.5 in)
50 years
71.8 mm (2.8 in)
100 years
80.6 mm (3.2 in)
Longer than the 57 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, 57 years of values from 1917 to 1980.
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: 85.1 mm (3.4 in) in 1929; 73.2 mm (2.9 in) in 1935; 60.7 mm (2.4 in) in 1938.
Download the Data
Data for Rosetown Cda Epf standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rosetown Cda Epf 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.