Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Estevan 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 Estevan A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.3 C (46.9 F)
-42.2 C (-44.0 F)
n/a
n/a
Feb
11.7 C (53.1 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-36.7 C (-34.1 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-22.8 C (-9.0 F)
n/a
n/a
May
38.7 C (101.7 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
40.5 C (104.9 F)
2.8 C (37.0 F)
n/a
n/a
Aug
41.1 C (106.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-6.7 C (19.9 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Dec
13.3 C (55.9 F)
-39.5 C (-39.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Estevan A still stand. 1951 holds the most, with 64.
Standing records at Estevan A by the year they were set
Year set
Standing records
1944
2
1945
53
1946
41
1947
35
1948
47
1949
51
1950
50
1951
64
1952
39
1953
44
1954
48
1955
50
1956
39
1957
36
1958
50
1959
37
1960
19
1961
33
1962
35
1963
43
1964
48
1965
34
1966
48
1967
36
1968
37
1969
37
1970
15
1971
17
1972
31
1973
35
1974
18
1975
21
1976
27
1977
46
1978
18
1979
32
1980
39
1981
36
1982
23
1983
50
All-Time Record Progression
2 new records
2 all-time records were set at Estevan A between 7 April 1980 and 23 December 1983. Each dot is a new record.
When Estevan A set new all-time records
Date
Kind
Detail
1980-04-07
Record daily snowfall
Record daily snowfall 35.1 cm (13.8 in)
1983-12-23
Record low maximum temperature
Record low maximum temperature -33.6 C (-28.5 F)
Wettest Day of Each Month
Jul: 91.7 mm (3.6 in)
The wettest day on record for each calendar month at Estevan A. The most was 91.7 mm (3.6 in) on 11 July 1974.
Record daily precipitation for each month at Estevan A
Month
Record daily precipitation (mm)
Date
Jan
15.5 mm (0.6 in)
14 January 1952
Feb
24.9 mm (1.0 in)
28 February 1951
Mar
17.8 mm (0.7 in)
25 March 1945
Apr
38.4 mm (1.5 in)
28 April 1970
May
47.8 mm (1.9 in)
2 May 1955
Jun
66.0 mm (2.6 in)
17 June 1959
Jul
91.7 mm (3.6 in)
11 July 1974
Aug
56.9 mm (2.2 in)
4 August 1951
Sep
66.8 mm (2.6 in)
3 September 1951
Oct
33.5 mm (1.3 in)
15 October 1962
Nov
18.0 mm (0.7 in)
24 November 1948
Dec
18.8 mm (0.7 in)
10 December 1949
Period of Record Coverage
1944 to 1983
Complete yearUnder 90 percent of days
40 years of record at Estevan A, 1944 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1944.
Cooler than the station meanWarmer than the station mean
One stripe for each of 39 complete years at Estevan A, 1945 to 1983. Blue stripes are years cooler than the station's own mean of 3.3 C (38.0 F); red stripes are warmer. The coolest year was 1950, at 0.7 C (33.2 F), and the warmest was 1981, at 5.7 C (42.3 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Estevan A as warming stripes, 1945 to 1983
Year
Annual mean temperature
Difference from the station mean
1945
2.9 C
-0.39 C
1946
3.9 C
+0.53 C
1947
3.3 C
-0.07 C
1948
2.8 C
-0.54 C
1949
3.1 C
-0.22 C
1950
0.7 C
-2.64 C
1951
0.7 C
-2.62 C
1952
3.9 C
+0.53 C
1953
4.9 C
+1.59 C
1954
3.8 C
+0.49 C
1955
2.2 C
-1.16 C
1956
2.9 C
-0.46 C
1957
3.8 C
+0.45 C
1958
4.4 C
+1.05 C
1959
3.4 C
+0.05 C
1960
3.6 C
+0.28 C
1961
4.6 C
+1.30 C
1962
4.0 C
+0.64 C
1963
4.5 C
+1.21 C
1964
3.3 C
+0.02 C
1965
2.0 C
-1.32 C
1966
2.6 C
-0.76 C
1967
3.2 C
-0.14 C
1968
3.5 C
+0.20 C
1969
2.7 C
-0.64 C
1970
2.6 C
-0.74 C
1971
3.4 C
+0.03 C
1972
2.1 C
-1.23 C
1973
4.7 C
+1.34 C
1974
3.3 C
+0.02 C
1975
3.2 C
-0.15 C
1976
4.3 C
+0.94 C
1977
4.3 C
+1.00 C
1978
2.6 C
-0.69 C
1979
2.3 C
-1.00 C
1980
4.2 C
+0.90 C
1981
5.7 C
+2.38 C
1982
2.1 C
-1.23 C
1983
4.2 C
+0.86 C
The fitted trend in annual mean temperature here over 1945 to 1983 is 0.2 C (-0.1 to 0.5) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.2 to 0.9) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Estevan A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (-0.1 to 0.5) per decade
0.3 F (-0.2 to 0.9) per decade
1945 to 1983
39
Not clearly different from zero
Mean daily maximum
0.2 C (-0.2 to 0.5) per decade
0.3 F (-0.3 to 1.0) per decade
1945 to 1983
39
Not clearly different from zero
Mean daily minimum
0.2 C (-0.1 to 0.5) per decade
0.3 F (-0.2 to 0.8) per decade
1945 to 1983
39
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
1944 to 1983
Yearly extremes at Estevan A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1958
36.7 C (98.1 F)
40
Coldest night (TNn)
-42.2 C (-44.0 F)
1954
-35.7 C (-32.2 F)
40
Wettest day (Rx1day)
91.7 mm (3.6 in)
1974
37.4 mm (1.5 in)
40
Wettest five days (Rx5day)
115.0 mm (4.5 in)
1974
57.9 mm (2.3 in)
40
Longest dry spell (CDD)
66 days
1960
33 days
40
Hottest day (TXx)
The hottest day of the year at Estevan A, 1944 to 1983. The record is 41.1 C (106.0 F) in 1958, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Estevan A by year
Year
Hottest day (TXx)
1944
7.8 C (46.0 F)
1945
37.8 C (100.0 F)
1946
38.3 C (100.9 F)
1947
38.3 C (100.9 F)
1948
36.1 C (97.0 F)
1949
39.4 C (102.9 F)
1950
35.6 C (96.1 F)
1951
38.9 C (102.0 F)
1952
37.8 C (100.0 F)
1953
33.3 C (91.9 F)
1954
34.4 C (93.9 F)
1955
36.7 C (98.1 F)
1956
36.1 C (97.0 F)
1957
36.7 C (98.1 F)
1958
41.1 C (106.0 F)
1959
36.1 C (97.0 F)
1960
37.8 C (100.0 F)
1961
37.2 C (99.0 F)
1962
36.7 C (98.1 F)
1963
36.1 C (97.0 F)
1964
35.6 C (96.1 F)
1965
36.7 C (98.1 F)
1966
36.7 C (98.1 F)
1967
36.7 C (98.1 F)
1968
37.2 C (99.0 F)
1969
35.6 C (96.1 F)
1970
35.6 C (96.1 F)
1971
37.8 C (100.0 F)
1972
33.9 C (93.0 F)
1973
35.6 C (96.1 F)
1974
33.9 C (93.0 F)
1975
37.2 C (99.0 F)
1976
37.8 C (100.0 F)
1977
35.2 C (95.4 F)
1978
35.5 C (95.9 F)
1979
36.9 C (98.4 F)
1980
39.3 C (102.7 F)
1981
40.5 C (104.9 F)
1982
35.5 C (95.9 F)
1983
40.7 C (105.3 F)
Coldest night (TNn)
The coldest night of the year at Estevan A, 1944 to 1983. The record is -42.2 C (-44.0 F) in 1954, marked on the chart; the median year is -35.7 C (-32.2 F).
Coldest night (TNn) at Estevan A by year
Year
Coldest night (TNn)
1944
-28.9 C (-20.0 F)
1945
-31.7 C (-25.1 F)
1946
-34.4 C (-29.9 F)
1947
-37.2 C (-35.0 F)
1948
-36.7 C (-34.1 F)
1949
-40.6 C (-41.1 F)
1950
-40.0 C (-40.0 F)
1951
-37.8 C (-36.0 F)
1952
-34.4 C (-29.9 F)
1953
-34.4 C (-29.9 F)
1954
-42.2 C (-44.0 F)
1955
-35.0 C (-31.0 F)
1956
-36.1 C (-33.0 F)
1957
-33.9 C (-29.0 F)
1958
-33.3 C (-27.9 F)
1959
-33.3 C (-27.9 F)
1960
-32.8 C (-27.0 F)
1961
-37.8 C (-36.0 F)
1962
-37.8 C (-36.0 F)
1963
-34.4 C (-29.9 F)
1964
-34.4 C (-29.9 F)
1965
-35.6 C (-32.1 F)
1966
-39.4 C (-38.9 F)
1967
-34.4 C (-29.9 F)
1968
-36.7 C (-34.1 F)
1969
-41.1 C (-42.0 F)
1970
-37.2 C (-35.0 F)
1971
-36.7 C (-34.1 F)
1972
-36.7 C (-34.1 F)
1973
-32.2 C (-26.0 F)
1974
-35.6 C (-32.1 F)
1975
-31.1 C (-24.0 F)
1976
-33.9 C (-29.0 F)
1977
-35.7 C (-32.3 F)
1978
-35.7 C (-32.3 F)
1979
-36.8 C (-34.2 F)
1980
-34.4 C (-29.9 F)
1981
-31.6 C (-24.9 F)
1982
-36.8 C (-34.2 F)
1983
-39.5 C (-39.1 F)
Wettest day (Rx1day)
The wettest day of the year at Estevan A, 1944 to 1983. The record is 91.7 mm (3.6 in) in 1974, marked on the chart; the median year is 37.4 mm (1.5 in).
Wettest day (Rx1day) at Estevan A by year
Year
Wettest day (Rx1day)
1944
3.3 mm (0.13 in)
1945
41.9 mm (1.6 in)
1946
27.4 mm (1.1 in)
1947
34.0 mm (1.3 in)
1948
51.8 mm (2.0 in)
1949
40.1 mm (1.6 in)
1950
41.1 mm (1.6 in)
1951
66.8 mm (2.6 in)
1952
43.4 mm (1.7 in)
1953
35.8 mm (1.4 in)
1954
46.2 mm (1.8 in)
1955
47.8 mm (1.9 in)
1956
39.1 mm (1.5 in)
1957
21.1 mm (0.8 in)
1958
32.0 mm (1.3 in)
1959
66.0 mm (2.6 in)
1960
20.6 mm (0.8 in)
1961
22.6 mm (0.9 in)
1962
33.5 mm (1.3 in)
1963
60.5 mm (2.4 in)
1964
52.3 mm (2.1 in)
1965
40.4 mm (1.6 in)
1966
33.0 mm (1.3 in)
1967
20.1 mm (0.8 in)
1968
33.5 mm (1.3 in)
1969
33.8 mm (1.3 in)
1970
67.8 mm (2.7 in)
1971
37.3 mm (1.5 in)
1972
35.1 mm (1.4 in)
1973
43.9 mm (1.7 in)
1974
91.7 mm (3.6 in)
1975
48.0 mm (1.9 in)
1976
26.4 mm (1.0 in)
1977
21.4 mm (0.8 in)
1978
41.0 mm (1.6 in)
1979
25.5 mm (1.0 in)
1980
37.5 mm (1.5 in)
1981
21.4 mm (0.8 in)
1982
61.8 mm (2.4 in)
1983
20.8 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Estevan A, 1944 to 1983. The record is 115.0 mm (4.5 in) in 1974, marked on the chart; the median year is 57.9 mm (2.3 in).
Wettest five days (Rx5day) at Estevan A by year
Year
Wettest five days (Rx5day)
1944
4.6 mm (0.18 in)
1945
53.3 mm (2.1 in)
1946
44.2 mm (1.7 in)
1947
73.2 mm (2.9 in)
1948
72.1 mm (2.8 in)
1949
41.4 mm (1.6 in)
1950
62.2 mm (2.4 in)
1951
81.0 mm (3.2 in)
1952
58.2 mm (2.3 in)
1953
55.9 mm (2.2 in)
1954
74.4 mm (2.9 in)
1955
57.6 mm (2.3 in)
1956
44.5 mm (1.8 in)
1957
24.6 mm (1.0 in)
1958
41.9 mm (1.6 in)
1959
83.0 mm (3.3 in)
1960
44.6 mm (1.8 in)
1961
24.2 mm (1.0 in)
1962
60.7 mm (2.4 in)
1963
103.7 mm (4.1 in)
1964
65.0 mm (2.6 in)
1965
67.6 mm (2.7 in)
1966
47.2 mm (1.9 in)
1967
34.4 mm (1.4 in)
1968
54.6 mm (2.1 in)
1969
76.6 mm (3.0 in)
1970
103.1 mm (4.1 in)
1971
59.5 mm (2.3 in)
1972
48.4 mm (1.9 in)
1973
63.7 mm (2.5 in)
1974
115.0 mm (4.5 in)
1975
84.1 mm (3.3 in)
1976
58.1 mm (2.3 in)
1977
41.4 mm (1.6 in)
1978
63.4 mm (2.5 in)
1979
42.2 mm (1.7 in)
1980
46.3 mm (1.8 in)
1981
35.4 mm (1.4 in)
1982
68.8 mm (2.7 in)
1983
37.6 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Estevan A, 1944 to 1983. The record is 66 days in 1960, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Estevan A by year
Year
Longest dry spell (CDD)
1944
33 days
1945
19 days
1946
20 days
1947
29 days
1948
43 days
1949
26 days
1950
22 days
1951
20 days
1952
54 days
1953
54 days
1954
30 days
1955
23 days
1956
15 days
1957
26 days
1958
23 days
1959
23 days
1960
66 days
1961
33 days
1962
29 days
1963
63 days
1964
48 days
1965
43 days
1966
46 days
1967
25 days
1968
37 days
1969
43 days
1970
17 days
1971
45 days
1972
27 days
1973
36 days
1974
59 days
1975
27 days
1976
57 days
1977
35 days
1978
32 days
1979
36 days
1980
49 days
1981
34 days
1982
26 days
1983
26 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Estevan A falls on 16 May and the median first autumn frost on 19 September, which leaves a median of 122 days between them.
Fitted over all years, the growing season changes by +8.0 days per decade at this station.
Frost dates and growing season at Estevan A
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
16 May
n/a
16 May
n/a
-3.5 days per decade
First autumn frost
19 September
n/a
19 September
n/a
+4.5 days per decade
Growing days
122 days
n/a
128 days
n/a
+8.0 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
39 years, 1945 to 1983
A day with at least 37.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 93.4 mm (3.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Estevan 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
37.1 mm (1.5 in)
5 years
51.3 mm (2.0 in)
10 years
61.0 mm (2.4 in)
25 years
73.7 mm (2.9 in)
50 years
83.5 mm (3.3 in)
Longer than the 39 years of record
100 years
93.4 mm (3.7 in)
Longer than the 39 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, 39 years of values from 1945 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: 91.7 mm (3.6 in) in 1974; 67.8 mm (2.7 in) in 1970; 66.8 mm (2.6 in) in 1951.
Download the Data
Data for Estevan A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Estevan 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.