Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Three Hills. 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 Three Hills, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.1 C (61.0 F)
-48.3 C (-54.9 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-47.2 C (-53.0 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-42.8 C (-45.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-24.4 C (-11.9 F)
n/a
n/a
May
34.4 C (93.9 F)
-15.0 C (5.0 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-7.2 C (19.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-5.0 C (23.0 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-15.0 C (5.0 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-28.9 C (-20.0 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-37.8 C (-36.0 F)
n/a
n/a
Dec
17.8 C (64.0 F)
-48.3 C (-54.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Three Hills still stand. 1936 holds the most, with 59.
Standing records at Three Hills by the year they were set
Year set
Standing records
1921
23
1922
19
1923
28
1924
27
1925
22
1926
31
1927
19
1928
32
1929
35
1930
35
1931
35
1932
19
1933
22
1934
43
1935
20
1936
59
1937
19
1938
9
1939
39
1940
16
1941
17
1942
23
1943
29
1944
17
1945
16
1946
21
1947
18
1948
18
1949
29
1950
37
1951
37
1952
14
1953
21
1954
44
1955
24
1956
38
1957
20
1958
17
1959
31
1960
14
1961
26
1962
19
1963
33
1964
19
1965
30
1966
23
1967
25
1968
37
1969
27
1970
34
1971
20
1972
27
1973
13
1974
18
1975
23
1976
21
1977
32
All-Time Record Progression
1 new records
1 all-time records were set at Three Hills between 2 July 1966 and 2 July 1966. Each dot is a new record.
When Three Hills set new all-time records
Date
Kind
Detail
1966-07-02
Record daily precipitation
Record daily precipitation 75.9 mm (3.0 in)
Wettest Day of Each Month
Jul: 75.9 mm (3.0 in)
The wettest day on record for each calendar month at Three Hills. The most was 75.9 mm (3.0 in) on 2 July 1966.
Record daily precipitation for each month at Three Hills
Month
Record daily precipitation (mm)
Date
Jan
16.3 mm (0.6 in)
30 January 1971
Feb
17.8 mm (0.7 in)
13 February 1926
Mar
23.4 mm (0.9 in)
10 March 1976
Apr
68.8 mm (2.7 in)
21 April 1932
May
59.4 mm (2.3 in)
27 May 1961
Jun
55.1 mm (2.2 in)
24 June 1939
Jul
75.9 mm (3.0 in)
2 July 1966
Aug
62.5 mm (2.5 in)
22 August 1947
Sep
39.1 mm (1.5 in)
20 September 1945
Oct
35.6 mm (1.4 in)
23 October 1943
Nov
18.3 mm (0.7 in)
30 November 1972
Dec
21.3 mm (0.8 in)
20 December 1966
Period of Record Coverage
1921 to 1978
Complete yearUnder 90 percent of days
58 years of record at Three Hills, 1921 to 1978. 3 years have data for under 90 percent of days and are left out of rankings: 1963, 1964, 1978.
Cooler than the station meanWarmer than the station mean
One stripe for each of 47 complete years at Three Hills, 1922 to 1977. Blue stripes are years cooler than the station's own mean of 2.0 C (35.5 F); red stripes are warmer. The coolest year was 1951, at -0.4 C (31.2 F), and the warmest was 1931, at 4.1 C (39.3 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Three Hills as warming stripes, 1922 to 1977
Year
Annual mean temperature
Difference from the station mean
1922
0.6 C
-1.36 C
1924
1.8 C
-0.16 C
1925
2.2 C
+0.23 C
1926
2.9 C
+0.98 C
1927
0.1 C
-1.89 C
1929
1.9 C
-0.07 C
1930
3.6 C
+1.67 C
1931
4.1 C
+2.09 C
1932
1.9 C
-0.09 C
1933
2.0 C
+0.08 C
1934
3.4 C
+1.39 C
1935
0.5 C
-1.43 C
1936
1.0 C
-0.98 C
1937
1.3 C
-0.62 C
1938
2.2 C
+0.24 C
1939
2.5 C
+0.57 C
1940
1.8 C
-0.16 C
1941
3.5 C
+1.49 C
1942
2.5 C
+0.50 C
1943
2.2 C
+0.25 C
1944
3.5 C
+1.51 C
1945
1.1 C
-0.87 C
1946
2.5 C
+0.52 C
1947
2.5 C
+0.49 C
1948
1.4 C
-0.60 C
1949
2.2 C
+0.22 C
1950
0.1 C
-1.84 C
1951
-0.4 C
-2.38 C
1952
2.2 C
+0.26 C
1953
3.4 C
+1.47 C
1954
1.9 C
-0.08 C
1955
0.5 C
-1.42 C
1956
1.6 C
-0.38 C
1957
2.6 C
+0.65 C
1958
3.2 C
+1.21 C
1959
2.3 C
+0.30 C
1960
2.2 C
+0.21 C
1961
3.2 C
+1.19 C
1965
0.9 C
-1.05 C
1966
0.9 C
-1.03 C
1967
1.6 C
-0.32 C
1968
2.6 C
+0.60 C
1969
1.3 C
-0.63 C
1970
1.6 C
-0.32 C
1972
0.8 C
-1.12 C
1973
2.2 C
+0.19 C
1977
2.4 C
+0.46 C
The fitted trend in annual mean temperature here over 1922 to 1977 is -0.1 C (-0.3 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.5 to 0.3) per decade. The slope is a straight line fitted to 47 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Three Hills
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.3 to 0.1) per decade
-0.1 F (-0.5 to 0.3) per decade
1922 to 1977
47
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.4 to 0.1) per decade
-0.3 F (-0.7 to 0.2) per decade
1922 to 1977
47
Not clearly different from zero
Mean daily minimum
0.03 C (-0.14 to 0.21) per decade
0.1 F (-0.3 to 0.4) per decade
1922 to 1977
47
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
1921 to 1978
Yearly extremes at Three Hills: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1930
34.4 C (93.9 F)
58
Coldest night (TNn)
-48.3 C (-54.9 F)
1924
-39.7 C (-39.5 F)
58
Wettest day (Rx1day)
75.9 mm (3.0 in)
1966
33.5 mm (1.3 in)
58
Wettest five days (Rx5day)
114.0 mm (4.5 in)
1928
53.6 mm (2.1 in)
58
Longest dry spell (CDD)
95 days
1923
33 days
58
Hottest day (TXx)
The hottest day of the year at Three Hills, 1921 to 1978. The record is 40.0 C (104.0 F) in 1930, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Three Hills by year
Year
Hottest day (TXx)
1921
38.3 C (100.9 F)
1922
32.2 C (90.0 F)
1923
33.9 C (93.0 F)
1924
36.7 C (98.1 F)
1925
35.6 C (96.1 F)
1926
37.2 C (99.0 F)
1927
33.3 C (91.9 F)
1928
35.0 C (95.0 F)
1929
37.8 C (100.0 F)
1930
40.0 C (104.0 F)
1931
31.7 C (89.1 F)
1932
33.3 C (91.9 F)
1933
37.2 C (99.0 F)
1934
36.7 C (98.1 F)
1935
34.4 C (93.9 F)
1936
37.2 C (99.0 F)
1937
36.7 C (98.1 F)
1938
35.0 C (95.0 F)
1939
34.4 C (93.9 F)
1940
32.2 C (90.0 F)
1941
36.1 C (97.0 F)
1942
33.9 C (93.0 F)
1943
32.8 C (91.0 F)
1944
34.4 C (93.9 F)
1945
35.0 C (95.0 F)
1946
35.0 C (95.0 F)
1947
34.4 C (93.9 F)
1948
32.8 C (91.0 F)
1949
33.9 C (93.0 F)
1950
33.9 C (93.0 F)
1951
32.2 C (90.0 F)
1952
31.7 C (89.1 F)
1953
32.8 C (91.0 F)
1954
32.8 C (91.0 F)
1955
33.3 C (91.9 F)
1956
34.4 C (93.9 F)
1957
32.8 C (91.0 F)
1958
33.9 C (93.0 F)
1959
35.0 C (95.0 F)
1960
36.7 C (98.1 F)
1961
36.7 C (98.1 F)
1962
33.9 C (93.0 F)
1963
32.8 C (91.0 F)
1964
33.3 C (91.9 F)
1965
33.9 C (93.0 F)
1966
32.8 C (91.0 F)
1967
37.2 C (99.0 F)
1968
35.0 C (95.0 F)
1969
34.4 C (93.9 F)
1970
35.0 C (95.0 F)
1971
36.1 C (97.0 F)
1972
33.9 C (93.0 F)
1973
34.4 C (93.9 F)
1974
36.1 C (97.0 F)
1975
37.8 C (100.0 F)
1976
32.2 C (90.0 F)
1977
35.0 C (95.0 F)
1978
7.2 C (45.0 F)
Coldest night (TNn)
The coldest night of the year at Three Hills, 1921 to 1978. The record is -48.3 C (-54.9 F) in 1924, marked on the chart; the median year is -39.7 C (-39.5 F).
Coldest night (TNn) at Three Hills by year
Year
Coldest night (TNn)
1921
-39.4 C (-38.9 F)
1922
-38.9 C (-38.0 F)
1923
-42.8 C (-45.0 F)
1924
-48.3 C (-54.9 F)
1925
-34.4 C (-29.9 F)
1926
-38.9 C (-38.0 F)
1927
-44.4 C (-47.9 F)
1928
-43.9 C (-47.0 F)
1929
-46.7 C (-52.1 F)
1930
-42.8 C (-45.0 F)
1931
-32.8 C (-27.0 F)
1932
-45.0 C (-49.0 F)
1933
-36.7 C (-34.1 F)
1934
-42.2 C (-44.0 F)
1935
-46.7 C (-52.1 F)
1936
-47.2 C (-53.0 F)
1937
-42.8 C (-45.0 F)
1938
-42.2 C (-44.0 F)
1939
-46.7 C (-52.1 F)
1940
-37.8 C (-36.0 F)
1941
-35.6 C (-32.1 F)
1942
-34.4 C (-29.9 F)
1943
-46.7 C (-52.1 F)
1944
-32.8 C (-27.0 F)
1945
-37.8 C (-36.0 F)
1946
-37.2 C (-35.0 F)
1947
-40.6 C (-41.1 F)
1948
-36.7 C (-34.1 F)
1949
-39.4 C (-38.9 F)
1950
-48.3 C (-54.9 F)
1951
-42.8 C (-45.0 F)
1952
-38.3 C (-36.9 F)
1953
-33.9 C (-29.0 F)
1954
-43.9 C (-47.0 F)
1955
-36.7 C (-34.1 F)
1956
-46.7 C (-52.1 F)
1957
-37.8 C (-36.0 F)
1958
-38.3 C (-36.9 F)
1959
-35.0 C (-31.0 F)
1960
-42.2 C (-44.0 F)
1961
-37.2 C (-35.0 F)
1962
-37.2 C (-35.0 F)
1963
-40.0 C (-40.0 F)
1964
-38.3 C (-36.9 F)
1965
-37.2 C (-35.0 F)
1966
-38.9 C (-38.0 F)
1967
-36.7 C (-34.1 F)
1968
-38.9 C (-38.0 F)
1969
-45.0 C (-49.0 F)
1970
-42.8 C (-45.0 F)
1971
-41.7 C (-43.1 F)
1972
-47.2 C (-53.0 F)
1973
-37.8 C (-36.0 F)
1974
-42.8 C (-45.0 F)
1975
-41.7 C (-43.1 F)
1976
-38.3 C (-36.9 F)
1977
-46.7 C (-52.1 F)
1978
-44.4 C (-47.9 F)
Wettest day (Rx1day)
The wettest day of the year at Three Hills, 1921 to 1978. The record is 75.9 mm (3.0 in) in 1966, marked on the chart; the median year is 33.5 mm (1.3 in).
Wettest day (Rx1day) at Three Hills by year
Year
Wettest day (Rx1day)
1921
17.8 mm (0.7 in)
1922
14.5 mm (0.6 in)
1923
45.0 mm (1.8 in)
1924
75.7 mm (3.0 in)
1925
29.7 mm (1.2 in)
1926
41.7 mm (1.6 in)
1927
24.4 mm (1.0 in)
1928
48.8 mm (1.9 in)
1929
15.2 mm (0.6 in)
1930
24.6 mm (1.0 in)
1931
40.9 mm (1.6 in)
1932
68.8 mm (2.7 in)
1933
24.4 mm (1.0 in)
1934
19.8 mm (0.8 in)
1935
38.1 mm (1.5 in)
1936
27.4 mm (1.1 in)
1937
23.9 mm (0.9 in)
1938
34.0 mm (1.3 in)
1939
55.1 mm (2.2 in)
1940
25.4 mm (1.0 in)
1941
44.5 mm (1.8 in)
1942
40.1 mm (1.6 in)
1943
35.6 mm (1.4 in)
1944
22.1 mm (0.9 in)
1945
46.2 mm (1.8 in)
1946
24.4 mm (1.0 in)
1947
62.5 mm (2.5 in)
1948
35.1 mm (1.4 in)
1949
44.7 mm (1.8 in)
1950
31.8 mm (1.3 in)
1951
42.7 mm (1.7 in)
1952
19.3 mm (0.8 in)
1953
42.7 mm (1.7 in)
1954
34.5 mm (1.4 in)
1955
23.4 mm (0.9 in)
1956
47.0 mm (1.9 in)
1957
41.4 mm (1.6 in)
1958
17.0 mm (0.7 in)
1959
25.1 mm (1.0 in)
1960
18.5 mm (0.7 in)
1961
59.4 mm (2.3 in)
1962
19.1 mm (0.8 in)
1963
51.8 mm (2.0 in)
1964
29.5 mm (1.2 in)
1965
35.6 mm (1.4 in)
1966
75.9 mm (3.0 in)
1967
15.7 mm (0.6 in)
1968
54.1 mm (2.1 in)
1969
30.5 mm (1.2 in)
1970
50.3 mm (2.0 in)
1971
20.1 mm (0.8 in)
1972
27.2 mm (1.1 in)
1973
45.0 mm (1.8 in)
1974
52.6 mm (2.1 in)
1975
27.2 mm (1.1 in)
1976
33.0 mm (1.3 in)
1977
21.8 mm (0.9 in)
1978
11.2 mm (0.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Three Hills, 1921 to 1978. The record is 114.0 mm (4.5 in) in 1928, marked on the chart; the median year is 53.6 mm (2.1 in).
Wettest five days (Rx5day) at Three Hills by year
Year
Wettest five days (Rx5day)
1921
31.7 mm (1.2 in)
1922
22.6 mm (0.9 in)
1923
55.4 mm (2.2 in)
1924
83.3 mm (3.3 in)
1925
45.0 mm (1.8 in)
1926
67.1 mm (2.6 in)
1927
55.9 mm (2.2 in)
1928
114.0 mm (4.5 in)
1929
26.7 mm (1.1 in)
1930
34.2 mm (1.3 in)
1931
56.1 mm (2.2 in)
1932
108.9 mm (4.3 in)
1933
28.8 mm (1.1 in)
1934
31.2 mm (1.2 in)
1935
67.1 mm (2.6 in)
1936
33.0 mm (1.3 in)
1937
53.9 mm (2.1 in)
1938
49.0 mm (1.9 in)
1939
81.0 mm (3.2 in)
1940
47.5 mm (1.9 in)
1941
71.9 mm (2.8 in)
1942
67.3 mm (2.6 in)
1943
48.3 mm (1.9 in)
1944
49.5 mm (1.9 in)
1945
60.0 mm (2.4 in)
1946
56.7 mm (2.2 in)
1947
66.1 mm (2.6 in)
1948
58.7 mm (2.3 in)
1949
50.3 mm (2.0 in)
1950
53.6 mm (2.1 in)
1951
67.1 mm (2.6 in)
1952
44.7 mm (1.8 in)
1953
57.1 mm (2.2 in)
1954
72.6 mm (2.9 in)
1955
54.7 mm (2.2 in)
1956
52.3 mm (2.1 in)
1957
98.9 mm (3.9 in)
1958
36.5 mm (1.4 in)
1959
44.7 mm (1.8 in)
1960
28.1 mm (1.1 in)
1961
84.3 mm (3.3 in)
1962
26.7 mm (1.1 in)
1963
59.7 mm (2.4 in)
1964
32.8 mm (1.3 in)
1965
56.5 mm (2.2 in)
1966
85.8 mm (3.4 in)
1967
26.4 mm (1.0 in)
1968
85.1 mm (3.4 in)
1969
38.6 mm (1.5 in)
1970
111.1 mm (4.4 in)
1971
38.9 mm (1.5 in)
1972
38.7 mm (1.5 in)
1973
65.9 mm (2.6 in)
1974
53.6 mm (2.1 in)
1975
42.2 mm (1.7 in)
1976
49.1 mm (1.9 in)
1977
27.4 mm (1.1 in)
1978
17.2 mm (0.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Three Hills, 1921 to 1978. The record is 95 days in 1923, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Three Hills by year
Year
Longest dry spell (CDD)
1921
31 days
1922
33 days
1923
95 days
1924
24 days
1925
43 days
1926
38 days
1927
29 days
1928
51 days
1929
24 days
1930
43 days
1931
53 days
1932
43 days
1933
37 days
1934
43 days
1935
30 days
1936
25 days
1937
34 days
1938
35 days
1939
27 days
1940
41 days
1941
31 days
1942
33 days
1943
51 days
1944
42 days
1945
28 days
1946
34 days
1947
22 days
1948
35 days
1949
44 days
1950
32 days
1951
20 days
1952
35 days
1953
59 days
1954
47 days
1955
20 days
1956
35 days
1957
19 days
1958
31 days
1959
24 days
1960
26 days
1961
53 days
1962
29 days
1963
50 days
1964
31 days
1965
30 days
1966
28 days
1967
25 days
1968
23 days
1969
35 days
1970
24 days
1971
44 days
1972
26 days
1973
34 days
1974
41 days
1975
20 days
1976
52 days
1977
28 days
1978
18 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
47 years with a frost
Across 47 years with a frost, the median last spring frost at Three Hills falls on 10 June and the median first autumn frost on 22 August, which leaves a median of 73 days between them.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
Frost dates and growing season at Three Hills
Measure
Median, all years
Earliest period
Recent period (1941 to 1977)
Recent against earliest
Fitted trend
Last spring frost
10 June
n/a
13 June
n/a
-0.9 days per decade
First autumn frost
22 August
n/a
21 August
n/a
+0.3 days per decade
Growing days
73 days
n/a
73 days
n/a
+1.1 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
55 years, 1921 to 1977
A day with at least 33.2 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 86.2 mm (3.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Three Hills: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
33.2 mm (1.3 in)
5 years
47.5 mm (1.9 in)
10 years
56.9 mm (2.2 in)
25 years
68.7 mm (2.7 in)
50 years
77.5 mm (3.1 in)
100 years
86.2 mm (3.4 in)
Longer than the 55 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, 55 years of values from 1921 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: 75.9 mm (3.0 in) in 1966; 75.7 mm (3.0 in) in 1924; 68.8 mm (2.7 in) in 1932.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Three Hills, at 1947. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1947 ran 0.3 C (0.5 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Three Hills, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1947
+0.3
+0.5
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 Three Hills standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Three Hills 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.