Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Ridgetown. 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 Ridgetown, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.2 C (63.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-23.9 C (-11.0 F)
n/a
n/a
Apr
31.1 C (88.0 F)
-12.2 C (10.0 F)
n/a
n/a
May
33.9 C (93.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
2.8 C (37.0 F)
n/a
n/a
Aug
36.7 C (98.1 F)
0.6 C (33.1 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Dec
18.5 C (65.3 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Ridgetown still stand. 1933 holds the most, with 41.
Standing records at Ridgetown by the year they were set
Year set
Standing records
1885
3
1886
25
1887
36
1888
37
1889
24
1890
30
1891
32
1892
18
1893
25
1894
27
1896
36
1897
16
1898
14
1899
20
1900
22
1901
14
1902
22
1903
10
1923
15
1924
19
1925
32
1926
16
1927
21
1928
23
1929
21
1930
36
1931
30
1932
19
1933
41
1934
26
1935
16
1936
35
1937
16
1938
20
1939
16
1940
13
1941
20
1942
20
1943
18
1944
14
1945
25
1946
24
1947
21
1948
10
1949
23
1950
26
1951
20
1952
11
1953
14
1954
15
1955
19
1956
6
1957
8
1958
4
1959
16
1960
12
1961
6
1962
20
1963
20
1964
13
1965
19
1966
9
1967
19
1968
12
1969
7
1970
7
1971
7
1972
15
1973
15
1974
11
1975
13
1976
15
1977
23
1978
5
1979
15
1980
8
1981
12
1982
25
1983
16
All-Time Record Progression
1 new records
1 all-time records were set at Ridgetown between 31 July 1938 and 31 July 1938. Each dot is a new record.
When Ridgetown set new all-time records
Date
Kind
Detail
1938-07-31
Record daily precipitation
Record daily precipitation 113.0 mm (4.4 in)
Wettest Day of Each Month
Jul: 113.0 mm (4.4 in)
The wettest day on record for each calendar month at Ridgetown. The most was 113.0 mm (4.4 in) on 31 July 1938.
Record daily precipitation for each month at Ridgetown
Month
Record daily precipitation (mm)
Date
Jan
49.5 mm (1.9 in)
25 January 1976
Feb
57.2 mm (2.3 in)
19 February 1939
Mar
38.9 mm (1.5 in)
26 March 1934
Apr
75.0 mm (3.0 in)
13 April 1979
May
76.2 mm (3.0 in)
23 May 1927
Jun
84.6 mm (3.3 in)
28 June 1967
Jul
113.0 mm (4.4 in)
31 July 1938
Aug
96.8 mm (3.8 in)
8 August 1962
Sep
63.2 mm (2.5 in)
13 September 1892
Oct
74.9 mm (2.9 in)
1 October 1945
Nov
67.3 mm (2.6 in)
8 November 1883
Dec
63.0 mm (2.5 in)
21 December 1967
Period of Record Coverage
1885 to 1983
Complete yearUnder 90 percent of days
79 years of record at Ridgetown, 1885 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1885, 1897, 1903, 1923, 1970.
Cooler than the station meanWarmer than the station mean
One stripe for each of 72 complete years at Ridgetown, 1886 to 1983. Blue stripes are years cooler than the station's own mean of 8.5 C (47.2 F); red stripes are warmer. The coolest year was 1888, at 6.4 C (43.5 F), and the warmest was 1949, at 10.3 C (50.5 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Ridgetown as warming stripes, 1886 to 1983
Year
Annual mean temperature
Difference from the station mean
1886
7.0 C
-1.43 C
1887
7.4 C
-1.07 C
1888
6.4 C
-2.07 C
1889
8.0 C
-0.46 C
1890
8.1 C
-0.40 C
1891
8.3 C
-0.16 C
1893
6.9 C
-1.56 C
1894
8.4 C
-0.06 C
1896
7.8 C
-0.69 C
1898
8.1 C
-0.36 C
1900
8.0 C
-0.43 C
1901
7.0 C
-1.42 C
1902
7.0 C
-1.43 C
1924
7.3 C
-1.17 C
1925
8.2 C
-0.29 C
1926
7.3 C
-1.14 C
1927
9.0 C
+0.55 C
1928
8.8 C
+0.30 C
1929
8.0 C
-0.43 C
1930
8.9 C
+0.44 C
1931
10.2 C
+1.74 C
1932
9.2 C
+0.75 C
1933
9.6 C
+1.16 C
1934
8.7 C
+0.25 C
1935
8.4 C
-0.11 C
1936
8.4 C
-0.05 C
1937
8.6 C
+0.18 C
1938
9.4 C
+0.98 C
1939
9.2 C
+0.76 C
1940
7.6 C
-0.82 C
1941
9.9 C
+1.43 C
1942
8.7 C
+0.26 C
1943
8.0 C
-0.45 C
1944
9.0 C
+0.49 C
1945
8.2 C
-0.27 C
1946
9.5 C
+1.05 C
1947
8.6 C
+0.15 C
1948
8.9 C
+0.42 C
1949
10.3 C
+1.80 C
1950
8.4 C
-0.08 C
1951
8.7 C
+0.24 C
1952
9.7 C
+1.28 C
1953
10.2 C
+1.72 C
1954
9.4 C
+0.92 C
1955
9.7 C
+1.28 C
1956
8.7 C
+0.22 C
1957
8.6 C
+0.10 C
1958
7.9 C
-0.54 C
1959
9.1 C
+0.67 C
1960
8.4 C
-0.07 C
1961
8.8 C
+0.33 C
1962
8.3 C
-0.16 C
1963
7.9 C
-0.57 C
1964
9.0 C
+0.54 C
1965
8.3 C
-0.21 C
1966
8.2 C
-0.30 C
1967
8.0 C
-0.42 C
1968
8.4 C
-0.05 C
1969
8.3 C
-0.19 C
1971
9.1 C
+0.61 C
1972
8.0 C
-0.44 C
1973
9.7 C
+1.27 C
1974
8.4 C
-0.10 C
1975
9.2 C
+0.70 C
1976
7.7 C
-0.77 C
1977
8.3 C
-0.19 C
1978
7.4 C
-1.03 C
1979
7.6 C
-0.82 C
1980
7.7 C
-0.75 C
1981
8.2 C
-0.30 C
1982
8.5 C
+0.08 C
1983
9.1 C
+0.64 C
The annual mean temperature here has risen by 0.10 C (0.04 to 0.17) per decade over 1886 to 1983. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 72 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Ridgetown
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.10 C (0.04 to 0.17) per decade
0.2 F (0.1 to 0.3) per decade
1886 to 1983
72
Rise
Mean daily maximum
-0.05 C (-0.11 to 0.02) per decade
-0.08 F (-0.20 to 0.03) per decade
1886 to 1983
72
Not clearly different from zero
Mean daily minimum
0.2 C (0.2 to 0.3) per decade
0.4 F (0.3 to 0.6) per decade
1886 to 1983
72
Rise
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
1883 to 1983
Yearly extremes at Ridgetown: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1936
34.4 C (93.9 F)
79
Coldest night (TNn)
-29.4 C (-20.9 F)
1887
-22.2 C (-8.0 F)
79
Wettest day (Rx1day)
113.0 mm (4.4 in)
1938
52.2 mm (2.1 in)
81
Wettest five days (Rx5day)
125.6 mm (4.9 in)
1983
72.7 mm (2.9 in)
81
Longest dry spell (CDD)
41 days
1894
18 days
81
Hottest day (TXx)
The hottest day of the year at Ridgetown, 1883 to 1983. The record is 40.6 C (105.1 F) in 1936, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Ridgetown by year
Year
Hottest day (TXx)
1883
n/a
1884
n/a
1885
19.4 C (66.9 F)
1886
32.2 C (90.0 F)
1887
37.8 C (100.0 F)
1888
33.3 C (91.9 F)
1889
33.9 C (93.0 F)
1890
35.0 C (95.0 F)
1891
35.0 C (95.0 F)
1892
35.0 C (95.0 F)
1893
35.0 C (95.0 F)
1894
35.6 C (96.1 F)
1896
34.4 C (93.9 F)
1897
33.9 C (93.0 F)
1898
33.9 C (93.0 F)
1899
33.9 C (93.0 F)
1900
34.4 C (93.9 F)
1901
35.0 C (95.0 F)
1902
31.1 C (88.0 F)
1903
30.0 C (86.0 F)
1923
35.6 C (96.1 F)
1924
33.3 C (91.9 F)
1925
36.1 C (97.0 F)
1926
37.2 C (99.0 F)
1927
34.4 C (93.9 F)
1928
32.8 C (91.0 F)
1929
33.9 C (93.0 F)
1930
35.6 C (96.1 F)
1931
37.2 C (99.0 F)
1932
34.4 C (93.9 F)
1933
37.8 C (100.0 F)
1934
37.2 C (99.0 F)
1935
35.0 C (95.0 F)
1936
40.6 C (105.1 F)
1937
33.9 C (93.0 F)
1938
31.7 C (89.1 F)
1939
35.6 C (96.1 F)
1940
34.4 C (93.9 F)
1941
37.8 C (100.0 F)
1942
35.0 C (95.0 F)
1943
36.7 C (98.1 F)
1944
34.4 C (93.9 F)
1945
33.3 C (91.9 F)
1946
33.3 C (91.9 F)
1947
35.6 C (96.1 F)
1948
36.7 C (98.1 F)
1949
36.1 C (97.0 F)
1950
34.4 C (93.9 F)
1951
32.2 C (90.0 F)
1952
36.1 C (97.0 F)
1953
37.2 C (99.0 F)
1954
36.1 C (97.0 F)
1955
37.2 C (99.0 F)
1956
33.9 C (93.0 F)
1957
32.8 C (91.0 F)
1958
32.2 C (90.0 F)
1959
34.4 C (93.9 F)
1960
32.8 C (91.0 F)
1961
32.8 C (91.0 F)
1962
33.9 C (93.0 F)
1963
33.3 C (91.9 F)
1964
35.0 C (95.0 F)
1965
36.7 C (98.1 F)
1966
35.6 C (96.1 F)
1967
32.8 C (91.0 F)
1968
32.8 C (91.0 F)
1969
31.7 C (89.1 F)
1970
31.7 C (89.1 F)
1971
37.2 C (99.0 F)
1972
33.3 C (91.9 F)
1973
35.0 C (95.0 F)
1974
33.9 C (93.0 F)
1975
33.3 C (91.9 F)
1976
31.7 C (89.1 F)
1977
34.5 C (94.1 F)
1978
32.5 C (90.5 F)
1979
31.5 C (88.7 F)
1980
31.5 C (88.7 F)
1981
33.0 C (91.4 F)
1982
32.0 C (89.6 F)
1983
34.5 C (94.1 F)
Coldest night (TNn)
The coldest night of the year at Ridgetown, 1883 to 1983. The record is -29.4 C (-20.9 F) in 1887, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Ridgetown by year
Year
Coldest night (TNn)
1883
n/a
1884
n/a
1885
-17.2 C (1.0 F)
1886
-26.1 C (-15.0 F)
1887
-29.4 C (-20.9 F)
1888
-26.7 C (-16.1 F)
1889
-26.7 C (-16.1 F)
1890
-21.1 C (-6.0 F)
1891
-20.0 C (-4.0 F)
1892
-21.1 C (-6.0 F)
1893
-28.3 C (-18.9 F)
1894
-23.3 C (-9.9 F)
1896
-24.4 C (-11.9 F)
1897
-21.1 C (-6.0 F)
1898
-22.8 C (-9.0 F)
1899
-26.1 C (-15.0 F)
1900
-23.9 C (-11.0 F)
1901
-22.2 C (-8.0 F)
1902
-22.2 C (-8.0 F)
1903
-22.2 C (-8.0 F)
1923
-7.8 C (18.0 F)
1924
-22.8 C (-9.0 F)
1925
-24.4 C (-11.9 F)
1926
-20.6 C (-5.1 F)
1927
-23.9 C (-11.0 F)
1928
-18.9 C (-2.0 F)
1929
-25.0 C (-13.0 F)
1930
-21.1 C (-6.0 F)
1931
-17.8 C (0.0 F)
1932
-20.0 C (-4.0 F)
1933
-22.8 C (-9.0 F)
1934
-29.4 C (-20.9 F)
1935
-21.7 C (-7.1 F)
1936
-23.3 C (-9.9 F)
1937
-17.8 C (0.0 F)
1938
-18.3 C (-0.9 F)
1939
-18.9 C (-2.0 F)
1940
-22.8 C (-9.0 F)
1941
-19.4 C (-2.9 F)
1942
-22.2 C (-8.0 F)
1943
-23.3 C (-9.9 F)
1944
-22.2 C (-8.0 F)
1945
-21.7 C (-7.1 F)
1946
-18.3 C (-0.9 F)
1947
-17.2 C (1.0 F)
1948
-21.7 C (-7.1 F)
1949
-14.4 C (6.1 F)
1950
-21.7 C (-7.1 F)
1951
-22.8 C (-9.0 F)
1952
-16.7 C (1.9 F)
1953
-17.2 C (1.0 F)
1954
-19.4 C (-2.9 F)
1955
-18.9 C (-2.0 F)
1956
-18.9 C (-2.0 F)
1957
-25.0 C (-13.0 F)
1958
-22.2 C (-8.0 F)
1959
-22.2 C (-8.0 F)
1960
-21.7 C (-7.1 F)
1961
-26.1 C (-15.0 F)
1962
-25.6 C (-14.1 F)
1963
-25.6 C (-14.1 F)
1964
-18.3 C (-0.9 F)
1965
-22.8 C (-9.0 F)
1966
-22.8 C (-9.0 F)
1967
-20.6 C (-5.1 F)
1968
-21.7 C (-7.1 F)
1969
-21.1 C (-6.0 F)
1970
-24.4 C (-11.9 F)
1971
-22.2 C (-8.0 F)
1972
-24.4 C (-11.9 F)
1973
-21.1 C (-6.0 F)
1974
-21.7 C (-7.1 F)
1975
-21.7 C (-7.1 F)
1976
-26.1 C (-15.0 F)
1977
-23.9 C (-11.0 F)
1978
-23.0 C (-9.4 F)
1979
-26.0 C (-14.8 F)
1980
-21.0 C (-5.8 F)
1981
-26.0 C (-14.8 F)
1982
-26.0 C (-14.8 F)
1983
-22.5 C (-8.5 F)
Wettest day (Rx1day)
The wettest day of the year at Ridgetown, 1883 to 1983. The record is 113.0 mm (4.4 in) in 1938, marked on the chart; the median year is 52.2 mm (2.1 in).
Wettest day (Rx1day) at Ridgetown by year
Year
Wettest day (Rx1day)
1883
67.3 mm (2.6 in)
1884
40.6 mm (1.6 in)
1885
85.1 mm (3.4 in)
1886
53.6 mm (2.1 in)
1887
51.6 mm (2.0 in)
1888
35.8 mm (1.4 in)
1889
61.7 mm (2.4 in)
1890
67.1 mm (2.6 in)
1891
60.7 mm (2.4 in)
1892
63.2 mm (2.5 in)
1893
69.6 mm (2.7 in)
1894
45.7 mm (1.8 in)
1896
62.2 mm (2.4 in)
1897
38.9 mm (1.5 in)
1898
54.6 mm (2.1 in)
1899
30.0 mm (1.2 in)
1900
37.3 mm (1.5 in)
1901
54.6 mm (2.1 in)
1902
58.2 mm (2.3 in)
1903
55.4 mm (2.2 in)
1923
26.4 mm (1.0 in)
1924
42.4 mm (1.7 in)
1925
38.6 mm (1.5 in)
1926
55.9 mm (2.2 in)
1927
76.2 mm (3.0 in)
1928
33.0 mm (1.3 in)
1929
55.4 mm (2.2 in)
1930
36.3 mm (1.4 in)
1931
48.5 mm (1.9 in)
1932
76.7 mm (3.0 in)
1933
53.6 mm (2.1 in)
1934
52.6 mm (2.1 in)
1935
27.9 mm (1.1 in)
1936
34.3 mm (1.4 in)
1937
63.0 mm (2.5 in)
1938
113.0 mm (4.4 in)
1939
57.2 mm (2.3 in)
1940
43.4 mm (1.7 in)
1941
47.8 mm (1.9 in)
1942
35.8 mm (1.4 in)
1943
52.8 mm (2.1 in)
1944
58.4 mm (2.3 in)
1945
74.9 mm (2.9 in)
1946
38.9 mm (1.5 in)
1947
46.7 mm (1.8 in)
1948
50.8 mm (2.0 in)
1949
35.1 mm (1.4 in)
1950
36.3 mm (1.4 in)
1951
48.3 mm (1.9 in)
1952
26.4 mm (1.0 in)
1953
33.0 mm (1.3 in)
1954
52.1 mm (2.1 in)
1955
57.4 mm (2.3 in)
1956
61.2 mm (2.4 in)
1957
52.8 mm (2.1 in)
1958
65.0 mm (2.6 in)
1959
47.0 mm (1.9 in)
1960
40.9 mm (1.6 in)
1961
50.3 mm (2.0 in)
1962
96.8 mm (3.8 in)
1963
41.4 mm (1.6 in)
1964
77.5 mm (3.1 in)
1965
34.0 mm (1.3 in)
1966
43.4 mm (1.7 in)
1967
84.6 mm (3.3 in)
1968
72.6 mm (2.9 in)
1969
61.2 mm (2.4 in)
1970
29.2 mm (1.1 in)
1971
55.4 mm (2.2 in)
1972
35.8 mm (1.4 in)
1973
32.5 mm (1.3 in)
1974
29.2 mm (1.1 in)
1975
42.2 mm (1.7 in)
1976
65.3 mm (2.6 in)
1977
60.0 mm (2.4 in)
1978
43.1 mm (1.7 in)
1979
75.0 mm (3.0 in)
1980
52.2 mm (2.1 in)
1981
61.8 mm (2.4 in)
1982
44.0 mm (1.7 in)
1983
61.0 mm (2.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Ridgetown, 1883 to 1983. The record is 125.6 mm (4.9 in) in 1983, marked on the chart; the median year is 72.7 mm (2.9 in).
Wettest five days (Rx5day) at Ridgetown by year
Year
Wettest five days (Rx5day)
1883
73.4 mm (2.9 in)
1884
81.0 mm (3.2 in)
1885
93.3 mm (3.7 in)
1886
58.7 mm (2.3 in)
1887
72.7 mm (2.9 in)
1888
54.1 mm (2.1 in)
1889
95.2 mm (3.7 in)
1890
84.9 mm (3.3 in)
1891
93.0 mm (3.7 in)
1892
85.6 mm (3.4 in)
1893
79.7 mm (3.1 in)
1894
84.3 mm (3.3 in)
1896
109.4 mm (4.3 in)
1897
55.6 mm (2.2 in)
1898
98.6 mm (3.9 in)
1899
47.5 mm (1.9 in)
1900
63.2 mm (2.5 in)
1901
63.0 mm (2.5 in)
1902
109.3 mm (4.3 in)
1903
73.9 mm (2.9 in)
1923
51.3 mm (2.0 in)
1924
50.6 mm (2.0 in)
1925
65.1 mm (2.6 in)
1926
102.9 mm (4.1 in)
1927
100.1 mm (3.9 in)
1928
45.6 mm (1.8 in)
1929
97.6 mm (3.8 in)
1930
63.3 mm (2.5 in)
1931
61.7 mm (2.4 in)
1932
91.4 mm (3.6 in)
1933
56.9 mm (2.2 in)
1934
52.6 mm (2.1 in)
1935
44.9 mm (1.8 in)
1936
52.3 mm (2.1 in)
1937
72.7 mm (2.9 in)
1938
116.3 mm (4.6 in)
1939
80.1 mm (3.2 in)
1940
81.5 mm (3.2 in)
1941
52.6 mm (2.1 in)
1942
62.4 mm (2.5 in)
1943
72.7 mm (2.9 in)
1944
65.3 mm (2.6 in)
1945
102.1 mm (4.0 in)
1946
78.8 mm (3.1 in)
1947
89.7 mm (3.5 in)
1948
120.6 mm (4.7 in)
1949
48.3 mm (1.9 in)
1950
66.0 mm (2.6 in)
1951
63.0 mm (2.5 in)
1952
41.1 mm (1.6 in)
1953
40.6 mm (1.6 in)
1954
85.1 mm (3.4 in)
1955
82.5 mm (3.2 in)
1956
75.4 mm (3.0 in)
1957
69.5 mm (2.7 in)
1958
99.3 mm (3.9 in)
1959
87.6 mm (3.4 in)
1960
67.6 mm (2.7 in)
1961
73.4 mm (2.9 in)
1962
118.9 mm (4.7 in)
1963
65.8 mm (2.6 in)
1964
98.9 mm (3.9 in)
1965
55.1 mm (2.2 in)
1966
77.0 mm (3.0 in)
1967
85.6 mm (3.4 in)
1968
86.6 mm (3.4 in)
1969
69.3 mm (2.7 in)
1970
57.4 mm (2.3 in)
1971
64.8 mm (2.6 in)
1972
51.0 mm (2.0 in)
1973
60.5 mm (2.4 in)
1974
57.5 mm (2.3 in)
1975
115.2 mm (4.5 in)
1976
72.1 mm (2.8 in)
1977
78.0 mm (3.1 in)
1978
65.9 mm (2.6 in)
1979
85.7 mm (3.4 in)
1980
78.8 mm (3.1 in)
1981
72.2 mm (2.8 in)
1982
72.6 mm (2.9 in)
1983
125.6 mm (4.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Ridgetown, 1883 to 1983. The record is 41 days in 1894, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Ridgetown by year
Year
Longest dry spell (CDD)
1883
9 days
1884
23 days
1885
16 days
1886
17 days
1887
24 days
1888
20 days
1889
26 days
1890
22 days
1891
15 days
1892
19 days
1893
14 days
1894
41 days
1896
13 days
1897
15 days
1898
21 days
1899
28 days
1900
15 days
1901
16 days
1902
21 days
1903
16 days
1923
22 days
1924
21 days
1925
27 days
1926
15 days
1927
14 days
1928
30 days
1929
18 days
1930
25 days
1931
16 days
1932
32 days
1933
14 days
1934
20 days
1935
17 days
1936
12 days
1937
14 days
1938
16 days
1939
18 days
1940
12 days
1941
19 days
1942
14 days
1943
18 days
1944
23 days
1945
13 days
1946
21 days
1947
26 days
1948
19 days
1949
21 days
1950
14 days
1951
16 days
1952
18 days
1953
19 days
1954
25 days
1955
15 days
1956
13 days
1957
23 days
1958
19 days
1959
19 days
1960
15 days
1961
16 days
1962
21 days
1963
40 days
1964
19 days
1965
14 days
1966
20 days
1967
23 days
1968
14 days
1969
19 days
1970
16 days
1971
18 days
1972
15 days
1973
27 days
1974
14 days
1975
15 days
1976
19 days
1977
14 days
1978
18 days
1979
17 days
1980
13 days
1981
13 days
1982
12 days
1983
20 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
72 years with a frost
Across 72 years with a frost, the median last spring frost at Ridgetown falls on 10 May and the median first autumn frost on 10 October, which leaves a median of 155 days between them.
In 1953 to 1983 the median growing season was 160 days. That is 20 days more than in 1886 to 1940.
Fitted over all years, the growing season changes by +4.3 days per decade at this station.
Frost dates and growing season at Ridgetown
Measure
Median, all years
Earliest period (1886 to 1940)
Recent period (1953 to 1983)
Recent against earliest
Fitted trend
Last spring frost
10 May
22 May
7 May
15 days earlier
-2.0 days per decade
First autumn frost
10 October
4 October
14 October
10 days later
+2.2 days per decade
Growing days
155 days
140 days
160 days
20 days more
+4.3 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
75 years, 1884 to 1983
A day with at least 51.0 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 101.2 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Ridgetown: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
51.0 mm (2.0 in)
5 years
65.7 mm (2.6 in)
10 years
74.9 mm (2.9 in)
25 years
85.9 mm (3.4 in)
50 years
93.7 mm (3.7 in)
100 years
101.2 mm (4.0 in)
Longer than the 75 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, 75 years of values from 1884 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: 113.0 mm (4.4 in) in 1938; 96.8 mm (3.8 in) in 1962; 85.1 mm (3.4 in) in 1885.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Ridgetown, at 1976. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1976 ran 0.2 C (0.3 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Ridgetown, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1976
-0.2
-0.3
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 Ridgetown standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ridgetown 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.