Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Kemptville. 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 Kemptville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Feb
14.5 C (58.1 F)
-39.4 C (-38.9 F)
n/a
n/a
Mar
26.7 C (80.1 F)
-32.0 C (-25.6 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-15.6 C (3.9 F)
n/a
n/a
May
33.9 C (93.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
36.7 C (98.1 F)
3.0 C (37.4 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
36.1 C (97.0 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
28.3 C (82.9 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-23.9 C (-11.0 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-35.6 C (-32.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Kemptville still stand. 1933 holds the most, with 48.
Standing records at Kemptville by the year they were set
Year set
Standing records
1928
4
1929
22
1930
20
1931
32
1932
31
1933
48
1934
40
1935
30
1936
26
1937
3
1939
18
1940
29
1941
23
1942
27
1943
26
1944
27
1945
42
1946
45
1947
31
1948
26
1949
42
1950
26
1951
23
1952
12
1953
34
1954
25
1955
21
1956
21
1957
33
1958
21
1959
28
1960
9
1961
14
1962
28
1963
18
1964
36
1965
37
1966
18
1967
20
1968
31
1969
16
1970
20
1971
28
1972
17
1973
28
1974
27
1975
21
1976
43
1977
27
1978
34
1979
41
1980
22
1981
41
1982
28
1983
24
All-Time Record Progression
2 new records
2 all-time records were set at Kemptville between 3 February 1971 and 8 September 1981. Each dot is a new record.
When Kemptville set new all-time records
Date
Kind
Detail
1971-02-03
Record low minimum temperature
Record low minimum temperature -39.4 C (-38.9 F)
1981-09-08
Record daily precipitation
Record daily precipitation 74.0 mm (2.9 in)
Wettest Day of Each Month
Sep: 74.0 mm (2.9 in)
The wettest day on record for each calendar month at Kemptville. The most was 74.0 mm (2.9 in) on 8 September 1981.
Record daily precipitation for each month at Kemptville
Month
Record daily precipitation (mm)
Date
Jan
43.5 mm (1.7 in)
8 January 1978
Feb
48.8 mm (1.9 in)
21 February 1976
Mar
63.5 mm (2.5 in)
2 March 1947
Apr
48.3 mm (1.9 in)
12 April 1934
May
48.0 mm (1.9 in)
18 May 1972
Jun
66.0 mm (2.6 in)
25 June 1953
Jul
65.8 mm (2.6 in)
4 July 1951
Aug
64.3 mm (2.5 in)
24 August 1933
Sep
74.0 mm (2.9 in)
8 September 1981
Oct
56.6 mm (2.2 in)
25 October 1980
Nov
44.2 mm (1.7 in)
19 November 1948
Dec
41.0 mm (1.6 in)
28 December 1977
Period of Record Coverage
1928 to 1983
Complete yearUnder 90 percent of days
55 years of record at Kemptville, 1928 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1928, 1937, 1939.
Cooler than the station meanWarmer than the station mean
One stripe for each of 52 complete years at Kemptville, 1929 to 1983. Blue stripes are years cooler than the station's own mean of 5.9 C (42.7 F); red stripes are warmer. The coolest year was 1976, at 4.1 C (39.4 F), and the warmest was 1953, at 8.1 C (46.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Kemptville as warming stripes, 1929 to 1983
Year
Annual mean temperature
Difference from the station mean
1929
5.6 C
-0.37 C
1930
6.4 C
+0.43 C
1931
7.4 C
+1.48 C
1932
6.4 C
+0.43 C
1933
6.0 C
+0.10 C
1934
4.9 C
-1.05 C
1935
5.2 C
-0.73 C
1936
5.5 C
-0.49 C
1940
4.8 C
-1.10 C
1941
6.0 C
+0.10 C
1942
6.2 C
+0.25 C
1943
4.9 C
-1.00 C
1944
6.2 C
+0.27 C
1945
5.6 C
-0.31 C
1946
6.3 C
+0.33 C
1947
5.8 C
-0.13 C
1948
6.8 C
+0.83 C
1949
7.5 C
+1.56 C
1950
5.9 C
-0.01 C
1951
6.4 C
+0.48 C
1952
7.2 C
+1.30 C
1953
8.1 C
+2.16 C
1954
6.2 C
+0.22 C
1955
6.7 C
+0.76 C
1956
5.5 C
-0.46 C
1957
6.4 C
+0.49 C
1958
5.0 C
-0.91 C
1959
6.5 C
+0.53 C
1960
6.4 C
+0.47 C
1961
6.1 C
+0.15 C
1962
5.2 C
-0.73 C
1963
5.5 C
-0.45 C
1964
6.5 C
+0.58 C
1965
5.2 C
-0.70 C
1966
6.1 C
+0.15 C
1967
6.1 C
+0.14 C
1968
5.8 C
-0.19 C
1969
6.3 C
+0.32 C
1970
5.5 C
-0.44 C
1971
5.5 C
-0.44 C
1972
5.0 C
-0.97 C
1973
6.9 C
+0.93 C
1974
5.5 C
-0.43 C
1975
6.0 C
+0.02 C
1976
4.1 C
-1.81 C
1977
5.8 C
-0.18 C
1978
4.6 C
-1.36 C
1979
6.1 C
+0.15 C
1980
5.2 C
-0.76 C
1981
6.4 C
+0.46 C
1982
5.4 C
-0.55 C
1983
6.4 C
+0.41 C
The fitted trend in annual mean temperature here over 1929 to 1983 is -0.1 C (-0.2 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.4 to 0.1) per decade. The slope is a straight line fitted to 52 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Kemptville
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.1 C (-0.2 to 0.1) per decade
-0.2 F (-0.4 to 0.1) per decade
1929 to 1983
52
Not clearly different from zero
Mean daily maximum
-0.16 C (-0.30 to -0.03) per decade
-0.3 F (-0.5 to -0.1) per decade
1929 to 1983
52
Fall
Mean daily minimum
0.00 C (-0.16 to 0.16) per decade
-0.01 F (-0.29 to 0.28) per decade
1929 to 1983
52
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
1928 to 1983
Yearly extremes at Kemptville: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
1941
33.3 C (91.9 F)
55
Coldest night (TNn)
-39.4 C (-38.9 F)
1971
-31.1 C (-24.0 F)
55
Wettest day (Rx1day)
74.0 mm (2.9 in)
1981
45.7 mm (1.8 in)
55
Wettest five days (Rx5day)
143.7 mm (5.7 in)
1981
64.1 mm (2.5 in)
55
Longest dry spell (CDD)
39 days
1961
16 days
55
Hottest day (TXx)
The hottest day of the year at Kemptville, 1928 to 1983. The record is 38.3 C (100.9 F) in 1941, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Kemptville by year
Year
Hottest day (TXx)
1928
18.3 C (64.9 F)
1929
35.6 C (96.1 F)
1930
31.7 C (89.1 F)
1931
36.7 C (98.1 F)
1932
32.8 C (91.0 F)
1933
35.6 C (96.1 F)
1934
34.4 C (93.9 F)
1935
34.4 C (93.9 F)
1936
34.4 C (93.9 F)
1937
10.6 C (51.1 F)
1939
35.6 C (96.1 F)
1940
33.3 C (91.9 F)
1941
38.3 C (100.9 F)
1942
36.1 C (97.0 F)
1943
33.9 C (93.0 F)
1944
38.3 C (100.9 F)
1945
33.3 C (91.9 F)
1946
35.0 C (95.0 F)
1947
34.4 C (93.9 F)
1948
36.7 C (98.1 F)
1949
37.2 C (99.0 F)
1950
32.2 C (90.0 F)
1951
31.1 C (88.0 F)
1952
35.0 C (95.0 F)
1953
35.0 C (95.0 F)
1954
31.7 C (89.1 F)
1955
37.8 C (100.0 F)
1956
33.9 C (93.0 F)
1957
34.4 C (93.9 F)
1958
32.8 C (91.0 F)
1959
34.4 C (93.9 F)
1960
33.3 C (91.9 F)
1961
32.2 C (90.0 F)
1962
33.9 C (93.0 F)
1963
36.1 C (97.0 F)
1964
36.1 C (97.0 F)
1965
32.8 C (91.0 F)
1966
35.6 C (96.1 F)
1967
31.1 C (88.0 F)
1968
33.3 C (91.9 F)
1969
33.3 C (91.9 F)
1970
31.1 C (88.0 F)
1971
32.2 C (90.0 F)
1972
31.7 C (89.1 F)
1973
33.3 C (91.9 F)
1974
31.7 C (89.1 F)
1975
36.1 C (97.0 F)
1976
31.7 C (89.1 F)
1977
32.5 C (90.5 F)
1978
35.0 C (95.0 F)
1979
33.0 C (91.4 F)
1980
31.5 C (88.7 F)
1981
33.0 C (91.4 F)
1982
31.5 C (88.7 F)
1983
32.5 C (90.5 F)
Coldest night (TNn)
The coldest night of the year at Kemptville, 1928 to 1983. The record is -39.4 C (-38.9 F) in 1971, marked on the chart; the median year is -31.1 C (-24.0 F).
Coldest night (TNn) at Kemptville by year
Year
Coldest night (TNn)
1928
-21.1 C (-6.0 F)
1929
-27.8 C (-18.0 F)
1930
-29.4 C (-20.9 F)
1931
-30.0 C (-22.0 F)
1932
-28.3 C (-18.9 F)
1933
-35.6 C (-32.1 F)
1934
-35.6 C (-32.1 F)
1935
-33.9 C (-29.0 F)
1936
-28.3 C (-18.9 F)
1937
-20.6 C (-5.1 F)
1939
-22.2 C (-8.0 F)
1940
-27.8 C (-18.0 F)
1941
-28.3 C (-18.9 F)
1942
-33.9 C (-29.0 F)
1943
-35.0 C (-31.0 F)
1944
-30.0 C (-22.0 F)
1945
-32.2 C (-26.0 F)
1946
-30.0 C (-22.0 F)
1947
-31.7 C (-25.1 F)
1948
-33.9 C (-29.0 F)
1949
-28.9 C (-20.0 F)
1950
-30.0 C (-22.0 F)
1951
-35.6 C (-32.1 F)
1952
-28.3 C (-18.9 F)
1953
-25.0 C (-13.0 F)
1954
-29.4 C (-20.9 F)
1955
-30.0 C (-22.0 F)
1956
-26.7 C (-16.1 F)
1957
-37.8 C (-36.0 F)
1958
-29.4 C (-20.9 F)
1959
-33.9 C (-29.0 F)
1960
-27.8 C (-18.0 F)
1961
-28.3 C (-18.9 F)
1962
-35.0 C (-31.0 F)
1963
-31.7 C (-25.1 F)
1964
-30.6 C (-23.1 F)
1965
-31.1 C (-24.0 F)
1966
-30.0 C (-22.0 F)
1967
-32.8 C (-27.0 F)
1968
-32.2 C (-26.0 F)
1969
-26.7 C (-16.1 F)
1970
-31.7 C (-25.1 F)
1971
-39.4 C (-38.9 F)
1972
-36.1 C (-33.0 F)
1973
-35.0 C (-31.0 F)
1974
-34.4 C (-29.9 F)
1975
-29.4 C (-20.9 F)
1976
-38.3 C (-36.9 F)
1977
-35.6 C (-32.1 F)
1978
-34.0 C (-29.2 F)
1979
-35.0 C (-31.0 F)
1980
-33.0 C (-27.4 F)
1981
-36.5 C (-33.7 F)
1982
-34.0 C (-29.2 F)
1983
-28.0 C (-18.4 F)
Wettest day (Rx1day)
The wettest day of the year at Kemptville, 1928 to 1983. The record is 74.0 mm (2.9 in) in 1981, marked on the chart; the median year is 45.7 mm (1.8 in).
Wettest day (Rx1day) at Kemptville by year
Year
Wettest day (Rx1day)
1928
20.3 mm (0.8 in)
1929
30.5 mm (1.2 in)
1930
24.1 mm (0.9 in)
1931
54.6 mm (2.1 in)
1932
49.8 mm (2.0 in)
1933
64.3 mm (2.5 in)
1934
48.3 mm (1.9 in)
1935
48.3 mm (1.9 in)
1936
41.9 mm (1.6 in)
1937
15.2 mm (0.6 in)
1939
33.3 mm (1.3 in)
1940
47.2 mm (1.9 in)
1941
40.4 mm (1.6 in)
1942
49.3 mm (1.9 in)
1943
45.7 mm (1.8 in)
1944
44.5 mm (1.8 in)
1945
72.9 mm (2.9 in)
1946
56.1 mm (2.2 in)
1947
63.5 mm (2.5 in)
1948
44.2 mm (1.7 in)
1949
47.2 mm (1.9 in)
1950
34.8 mm (1.4 in)
1951
65.8 mm (2.6 in)
1952
48.5 mm (1.9 in)
1953
66.0 mm (2.6 in)
1954
36.1 mm (1.4 in)
1955
50.8 mm (2.0 in)
1956
35.8 mm (1.4 in)
1957
33.3 mm (1.3 in)
1958
51.6 mm (2.0 in)
1959
52.1 mm (2.1 in)
1960
25.9 mm (1.0 in)
1961
38.1 mm (1.5 in)
1962
39.1 mm (1.5 in)
1963
61.5 mm (2.4 in)
1964
28.7 mm (1.1 in)
1965
35.6 mm (1.4 in)
1966
40.6 mm (1.6 in)
1967
39.4 mm (1.6 in)
1968
38.6 mm (1.5 in)
1969
54.4 mm (2.1 in)
1970
45.5 mm (1.8 in)
1971
34.8 mm (1.4 in)
1972
48.0 mm (1.9 in)
1973
36.3 mm (1.4 in)
1974
42.4 mm (1.7 in)
1975
58.7 mm (2.3 in)
1976
48.8 mm (1.9 in)
1977
56.2 mm (2.2 in)
1978
43.5 mm (1.7 in)
1979
57.2 mm (2.3 in)
1980
56.6 mm (2.2 in)
1981
74.0 mm (2.9 in)
1982
47.0 mm (1.9 in)
1983
41.0 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Kemptville, 1928 to 1983. The record is 143.7 mm (5.7 in) in 1981, marked on the chart; the median year is 64.1 mm (2.5 in).
Wettest five days (Rx5day) at Kemptville by year
Year
Wettest five days (Rx5day)
1928
55.4 mm (2.2 in)
1929
55.7 mm (2.2 in)
1930
37.9 mm (1.5 in)
1931
74.2 mm (2.9 in)
1932
66.8 mm (2.6 in)
1933
64.3 mm (2.5 in)
1934
73.2 mm (2.9 in)
1935
72.7 mm (2.9 in)
1936
45.4 mm (1.8 in)
1937
21.6 mm (0.9 in)
1939
42.1 mm (1.7 in)
1940
87.3 mm (3.4 in)
1941
67.6 mm (2.7 in)
1942
64.5 mm (2.5 in)
1943
58.2 mm (2.3 in)
1944
74.2 mm (2.9 in)
1945
120.7 mm (4.8 in)
1946
58.9 mm (2.3 in)
1947
83.9 mm (3.3 in)
1948
55.6 mm (2.2 in)
1949
81.7 mm (3.2 in)
1950
51.3 mm (2.0 in)
1951
69.9 mm (2.8 in)
1952
78.2 mm (3.1 in)
1953
66.0 mm (2.6 in)
1954
74.0 mm (2.9 in)
1955
75.4 mm (3.0 in)
1956
57.9 mm (2.3 in)
1957
51.1 mm (2.0 in)
1958
64.1 mm (2.5 in)
1959
67.3 mm (2.6 in)
1960
58.4 mm (2.3 in)
1961
67.6 mm (2.7 in)
1962
46.0 mm (1.8 in)
1963
63.8 mm (2.5 in)
1964
37.8 mm (1.5 in)
1965
62.9 mm (2.5 in)
1966
54.3 mm (2.1 in)
1967
60.6 mm (2.4 in)
1968
55.1 mm (2.2 in)
1969
58.5 mm (2.3 in)
1970
54.9 mm (2.2 in)
1971
49.9 mm (2.0 in)
1972
68.3 mm (2.7 in)
1973
65.8 mm (2.6 in)
1974
52.5 mm (2.1 in)
1975
84.0 mm (3.3 in)
1976
63.3 mm (2.5 in)
1977
92.6 mm (3.6 in)
1978
57.4 mm (2.3 in)
1979
83.3 mm (3.3 in)
1980
58.6 mm (2.3 in)
1981
143.7 mm (5.7 in)
1982
65.0 mm (2.6 in)
1983
76.1 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Kemptville, 1928 to 1983. The record is 39 days in 1961, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Kemptville by year
Year
Longest dry spell (CDD)
1928
7 days
1929
17 days
1930
21 days
1931
16 days
1932
16 days
1933
13 days
1934
20 days
1935
21 days
1936
14 days
1937
18 days
1939
37 days
1940
17 days
1941
25 days
1942
13 days
1943
14 days
1944
19 days
1945
18 days
1946
10 days
1947
19 days
1948
14 days
1949
14 days
1950
14 days
1951
15 days
1952
13 days
1953
20 days
1954
11 days
1955
13 days
1956
18 days
1957
21 days
1958
20 days
1959
16 days
1960
18 days
1961
39 days
1962
14 days
1963
20 days
1964
22 days
1965
19 days
1966
12 days
1967
17 days
1968
17 days
1969
13 days
1970
18 days
1971
11 days
1972
11 days
1973
11 days
1974
11 days
1975
16 days
1976
12 days
1977
18 days
1978
27 days
1979
11 days
1980
11 days
1981
10 days
1982
13 days
1983
17 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
52 years with a frost
Across 52 years with a frost, the median last spring frost at Kemptville falls on 17 May and the median first autumn frost on 23 September, which leaves a median of 130 days between them.
Fitted over all years, the growing season changes by -0.4 days per decade at this station.
Frost dates and growing season at Kemptville
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
17 May
n/a
19 May
n/a
+0.1 days per decade
First autumn frost
23 September
n/a
23 September
n/a
-0.3 days per decade
Growing days
130 days
n/a
129 days
n/a
-0.4 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
52 years, 1929 to 1983
A day with at least 46.1 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 76.7 mm (3.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Kemptville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
46.1 mm (1.8 in)
5 years
56.4 mm (2.2 in)
10 years
62.3 mm (2.5 in)
25 years
68.8 mm (2.7 in)
50 years
73.0 mm (2.9 in)
100 years
76.7 mm (3.0 in)
Longer than the 52 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, 52 years of values from 1929 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: 74.0 mm (2.9 in) in 1981; 72.9 mm (2.9 in) in 1945; 66.0 mm (2.6 in) in 1953.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Kemptville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kemptville 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.