Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Whitecourt. 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 Whitecourt, 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)
-50.0 C (-58.0 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-47.8 C (-54.0 F)
n/a
n/a
Mar
18.9 C (66.0 F)
-41.7 C (-43.1 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-27.2 C (-17.0 F)
n/a
n/a
May
31.7 C (89.1 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
33.9 C (93.0 F)
-3.3 C (26.1 F)
n/a
n/a
Aug
33.3 C (91.9 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
30.6 C (87.1 F)
-18.3 C (-0.9 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Nov
22.2 C (72.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Dec
13.3 C (55.9 F)
-43.4 C (-46.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Whitecourt still stand. 1943 holds the most, with 110.
Standing records at Whitecourt by the year they were set
Year set
Standing records
1942
3
1943
110
1944
28
1945
43
1946
44
1947
38
1948
36
1949
62
1950
56
1951
70
1952
28
1953
27
1954
68
1955
57
1956
50
1957
44
1958
28
1959
43
1960
29
1961
54
1962
28
1963
41
1964
38
1965
44
1966
39
1967
32
1968
30
1969
30
1970
38
1971
38
1972
35
1973
37
1974
16
1975
24
1976
27
1977
36
1978
13
Wettest Day of Each Month
Jun: 88.9 mm (3.5 in)
The wettest day on record for each calendar month at Whitecourt. The most was 88.9 mm (3.5 in) on 27 June 1965.
Record daily precipitation for each month at Whitecourt
Month
Record daily precipitation (mm)
Date
Jan
24.1 mm (0.9 in)
6 January 1949
Feb
17.3 mm (0.7 in)
21 February 1956
Mar
27.7 mm (1.1 in)
10 March 1954
Apr
29.5 mm (1.2 in)
10 April 1971
May
59.1 mm (2.3 in)
28 May 1977
Jun
88.9 mm (3.5 in)
27 June 1965
Jul
82.6 mm (3.3 in)
9 July 1970
Aug
60.2 mm (2.4 in)
13 August 1965
Sep
32.3 mm (1.3 in)
2 September 1969
Oct
34.8 mm (1.4 in)
30 October 1955
Nov
24.6 mm (1.0 in)
22 November 1957
Dec
23.1 mm (0.9 in)
21 December 1974
Period of Record Coverage
1942 to 1978
Complete yearUnder 90 percent of days
37 years of record at Whitecourt, 1942 to 1978. 3 years have data for under 90 percent of days and are left out of rankings: 1942, 1944, 1978.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Whitecourt, 1943 to 1977. Blue stripes are years cooler than the station's own mean of 1.1 C (33.9 F); red stripes are warmer. The coolest year was 1950, at -1.3 C (29.7 F), and the warmest was 1976, at 3.1 C (37.6 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Whitecourt as warming stripes, 1943 to 1977
Year
Annual mean temperature
Difference from the station mean
1943
2.8 C
+1.73 C
1945
0.8 C
-0.26 C
1946
1.2 C
+0.08 C
1947
1.4 C
+0.27 C
1948
0.5 C
-0.62 C
1949
0.9 C
-0.18 C
1950
-1.3 C
-2.34 C
1951
-1.0 C
-2.05 C
1952
1.7 C
+0.63 C
1953
2.1 C
+0.98 C
1954
0.7 C
-0.38 C
1955
-0.7 C
-1.79 C
1956
0.9 C
-0.22 C
1957
1.2 C
+0.12 C
1958
2.1 C
+1.02 C
1959
1.1 C
+0.04 C
1960
1.7 C
+0.58 C
1961
1.8 C
+0.73 C
1962
1.5 C
+0.39 C
1963
2.1 C
+0.97 C
1964
1.0 C
-0.13 C
1965
0.2 C
-0.85 C
1966
-0.2 C
-1.30 C
1967
1.3 C
+0.20 C
1968
0.8 C
-0.24 C
1969
0.5 C
-0.62 C
1970
0.8 C
-0.26 C
1971
1.2 C
+0.14 C
1972
0.3 C
-0.74 C
1973
1.6 C
+0.50 C
1974
1.5 C
+0.43 C
1975
0.9 C
-0.14 C
1976
3.1 C
+2.05 C
1977
2.4 C
+1.27 C
The fitted trend in annual mean temperature here over 1943 to 1977 is 0.2 C (-0.2 to 0.5) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.3 to 0.9) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Whitecourt
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (-0.2 to 0.5) per decade
0.3 F (-0.3 to 0.9) per decade
1943 to 1977
34
Not clearly different from zero
Mean daily maximum
0.2 C (-0.2 to 0.5) per decade
0.4 F (-0.3 to 1.0) per decade
1943 to 1977
34
Not clearly different from zero
Mean daily minimum
0.2 C (-0.3 to 0.6) per decade
0.3 F (-0.5 to 1.0) per decade
1943 to 1977
34
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
1942 to 1978
Yearly extremes at Whitecourt: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.9 C (93.0 F)
1945
30.6 C (87.1 F)
37
Coldest night (TNn)
-50.0 C (-58.0 F)
1950
-41.1 C (-42.0 F)
37
Wettest day (Rx1day)
88.9 mm (3.5 in)
1965
40.4 mm (1.6 in)
37
Wettest five days (Rx5day)
144.2 mm (5.7 in)
1965
67.0 mm (2.6 in)
37
Longest dry spell (CDD)
43 days
1952
25 days
37
Hottest day (TXx)
The hottest day of the year at Whitecourt, 1942 to 1978. The record is 33.9 C (93.0 F) in 1945, marked on the chart; the median year is 30.6 C (87.1 F).
Hottest day (TXx) at Whitecourt by year
Year
Hottest day (TXx)
1942
8.9 C (48.0 F)
1943
26.1 C (79.0 F)
1944
24.4 C (75.9 F)
1945
33.9 C (93.0 F)
1946
30.6 C (87.1 F)
1947
28.3 C (82.9 F)
1948
30.0 C (86.0 F)
1949
32.2 C (90.0 F)
1950
31.7 C (89.1 F)
1951
31.1 C (88.0 F)
1952
28.9 C (84.0 F)
1953
29.4 C (84.9 F)
1954
28.3 C (82.9 F)
1955
31.1 C (88.0 F)
1956
30.6 C (87.1 F)
1957
27.2 C (81.0 F)
1958
30.6 C (87.1 F)
1959
31.7 C (89.1 F)
1960
32.8 C (91.0 F)
1961
32.2 C (90.0 F)
1962
29.4 C (84.9 F)
1963
31.1 C (88.0 F)
1964
31.1 C (88.0 F)
1965
31.7 C (89.1 F)
1966
29.4 C (84.9 F)
1967
31.1 C (88.0 F)
1968
30.0 C (86.0 F)
1969
30.6 C (87.1 F)
1970
33.3 C (91.9 F)
1971
33.3 C (91.9 F)
1972
31.7 C (89.1 F)
1973
31.7 C (89.1 F)
1974
30.0 C (86.0 F)
1975
31.1 C (88.0 F)
1976
29.4 C (84.9 F)
1977
30.0 C (86.0 F)
1978
30.7 C (87.3 F)
Coldest night (TNn)
The coldest night of the year at Whitecourt, 1942 to 1978. The record is -50.0 C (-58.0 F) in 1950, marked on the chart; the median year is -41.1 C (-42.0 F).
Coldest night (TNn) at Whitecourt by year
Year
Coldest night (TNn)
1942
-28.9 C (-20.0 F)
1943
-45.0 C (-49.0 F)
1944
-30.6 C (-23.1 F)
1945
-39.4 C (-38.9 F)
1946
-40.6 C (-41.1 F)
1947
-47.8 C (-54.0 F)
1948
-40.6 C (-41.1 F)
1949
-43.3 C (-45.9 F)
1950
-50.0 C (-58.0 F)
1951
-41.1 C (-42.0 F)
1952
-39.4 C (-38.9 F)
1953
-47.2 C (-53.0 F)
1954
-45.6 C (-50.1 F)
1955
-41.7 C (-43.1 F)
1956
-42.2 C (-44.0 F)
1957
-42.8 C (-45.0 F)
1958
-35.6 C (-32.1 F)
1959
-41.1 C (-42.0 F)
1960
-35.6 C (-32.1 F)
1961
-39.4 C (-38.9 F)
1962
-43.3 C (-45.9 F)
1963
-38.9 C (-38.0 F)
1964
-37.8 C (-36.0 F)
1965
-40.0 C (-40.0 F)
1966
-43.3 C (-45.9 F)
1967
-36.1 C (-33.0 F)
1968
-41.7 C (-43.1 F)
1969
-45.6 C (-50.1 F)
1970
-44.4 C (-47.9 F)
1971
-40.0 C (-40.0 F)
1972
-46.1 C (-51.0 F)
1973
-36.1 C (-33.0 F)
1974
-41.1 C (-42.0 F)
1975
-37.8 C (-36.0 F)
1976
-43.3 C (-45.9 F)
1977
-43.4 C (-46.1 F)
1978
-36.8 C (-34.2 F)
Wettest day (Rx1day)
The wettest day of the year at Whitecourt, 1942 to 1978. The record is 88.9 mm (3.5 in) in 1965, marked on the chart; the median year is 40.4 mm (1.6 in).
Wettest day (Rx1day) at Whitecourt by year
Year
Wettest day (Rx1day)
1942
22.9 mm (0.9 in)
1943
40.1 mm (1.6 in)
1944
12.7 mm (0.5 in)
1945
37.1 mm (1.5 in)
1946
41.7 mm (1.6 in)
1947
52.1 mm (2.1 in)
1948
35.1 mm (1.4 in)
1949
32.0 mm (1.3 in)
1950
33.0 mm (1.3 in)
1951
46.5 mm (1.8 in)
1952
32.8 mm (1.3 in)
1953
40.4 mm (1.6 in)
1954
42.2 mm (1.7 in)
1955
61.7 mm (2.4 in)
1956
31.2 mm (1.2 in)
1957
46.0 mm (1.8 in)
1958
15.2 mm (0.6 in)
1959
34.3 mm (1.4 in)
1960
57.4 mm (2.3 in)
1961
30.5 mm (1.2 in)
1962
36.6 mm (1.4 in)
1963
27.4 mm (1.1 in)
1964
33.5 mm (1.3 in)
1965
88.9 mm (3.5 in)
1966
40.9 mm (1.6 in)
1967
23.4 mm (0.9 in)
1968
32.0 mm (1.3 in)
1969
45.0 mm (1.8 in)
1970
82.6 mm (3.3 in)
1971
47.0 mm (1.9 in)
1972
40.9 mm (1.6 in)
1973
67.8 mm (2.7 in)
1974
52.8 mm (2.1 in)
1975
57.9 mm (2.3 in)
1976
28.4 mm (1.1 in)
1977
59.1 mm (2.3 in)
1978
43.5 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Whitecourt, 1942 to 1978. The record is 144.2 mm (5.7 in) in 1965, marked on the chart; the median year is 67.0 mm (2.6 in).
Wettest five days (Rx5day) at Whitecourt by year
Year
Wettest five days (Rx5day)
1942
25.5 mm (1.0 in)
1943
57.2 mm (2.3 in)
1944
22.9 mm (0.9 in)
1945
61.7 mm (2.4 in)
1946
48.8 mm (1.9 in)
1947
107.5 mm (4.2 in)
1948
71.9 mm (2.8 in)
1949
54.1 mm (2.1 in)
1950
41.4 mm (1.6 in)
1951
72.9 mm (2.9 in)
1952
64.8 mm (2.6 in)
1953
70.3 mm (2.8 in)
1954
74.4 mm (2.9 in)
1955
97.3 mm (3.8 in)
1956
54.3 mm (2.1 in)
1957
99.3 mm (3.9 in)
1958
26.6 mm (1.0 in)
1959
54.3 mm (2.1 in)
1960
77.2 mm (3.0 in)
1961
53.4 mm (2.1 in)
1962
42.3 mm (1.7 in)
1963
43.2 mm (1.7 in)
1964
74.9 mm (2.9 in)
1965
144.2 mm (5.7 in)
1966
62.7 mm (2.5 in)
1967
31.5 mm (1.2 in)
1968
46.7 mm (1.8 in)
1969
84.4 mm (3.3 in)
1970
97.8 mm (3.9 in)
1971
92.3 mm (3.6 in)
1972
67.0 mm (2.6 in)
1973
109.5 mm (4.3 in)
1974
88.4 mm (3.5 in)
1975
99.6 mm (3.9 in)
1976
56.9 mm (2.2 in)
1977
79.8 mm (3.1 in)
1978
73.4 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Whitecourt, 1942 to 1978. The record is 43 days in 1952, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Whitecourt by year
Year
Longest dry spell (CDD)
1942
11 days
1943
36 days
1944
30 days
1945
27 days
1946
24 days
1947
24 days
1948
17 days
1949
26 days
1950
21 days
1951
23 days
1952
43 days
1953
25 days
1954
41 days
1955
16 days
1956
33 days
1957
23 days
1958
31 days
1959
27 days
1960
23 days
1961
14 days
1962
24 days
1963
18 days
1964
25 days
1965
31 days
1966
26 days
1967
39 days
1968
27 days
1969
29 days
1970
25 days
1971
27 days
1972
24 days
1973
25 days
1974
19 days
1975
17 days
1976
33 days
1977
25 days
1978
15 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Whitecourt falls on 13 June and the median first autumn frost on 24 August, which leaves a median of 73 days between them.
Fitted over all years, the growing season changes by +12.5 days per decade at this station.
Frost dates and growing season at Whitecourt
Measure
Median, all years
Earliest period
Recent period (1948 to 1977)
Recent against earliest
Fitted trend
Last spring frost
13 June
n/a
13 June
n/a
-3.8 days per decade
First autumn frost
24 August
n/a
24 August
n/a
+8.7 days per decade
Growing days
73 days
n/a
73 days
n/a
+12.5 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
34 years, 1943 to 1977
A day with at least 40.0 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 99.3 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Whitecourt: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
40.0 mm (1.6 in)
5 years
53.9 mm (2.1 in)
10 years
63.9 mm (2.5 in)
25 years
77.3 mm (3.0 in)
50 years
88.0 mm (3.5 in)
Longer than the 34 years of record
100 years
99.3 mm (3.9 in)
Longer than the 34 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, 34 years of values from 1943 to 1977.
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: 88.9 mm (3.5 in) in 1965; 82.6 mm (3.3 in) in 1970; 67.8 mm (2.7 in) in 1973.
Download the Data
Data for Whitecourt standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Whitecourt 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.