Ridgetown Weather Records (CA006137147)

Record envelope, standing records and threshold days for Ridgetown (CA006137147), Ontario, Canada, with 104 years of record.

Key Facts for Ridgetown

Ridgetown (CA006137147) is a weather station in Ontario, Canada at 42.45 latitude and -81.88 longitude, 206 m (676 ft) above sea level.
The station reports from 1883 to 1986, 104 years of record.
1,464 records set at Ridgetown still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Ridgetown set a daily record low minimum temperature of -22.5 C (-8.5 F) on 30 December 1983.

About the Station

Location: Ontario, Canada, 42.45 latitude, -81.88 longitude.
Elevation: 206 m (676 ft).
Period of record: 1883 to 1986, 104 years.
Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record

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

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.

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

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.

Days with data per year at Ridgetown
Year	Days with data	Share of year	Complete
1885	85	23%	No
1886	359	98%	Yes
1887	363	99%	Yes
1888	366	100%	Yes
1889	365	100%	Yes
1890	363	99%	Yes
1891	365	100%	Yes
1892	335	92%	Yes
1893	365	100%	Yes
1894	364	100%	Yes
1896	362	99%	Yes
1897	275	75%	No
1898	365	100%	Yes
1899	352	96%	Yes
1900	364	100%	Yes
1901	363	99%	Yes
1902	359	98%	Yes
1903	181	50%	No
1923	223	61%	No
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	364	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	364	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	364	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	364	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	365	100%	Yes
1965	365	100%	Yes
1966	363	99%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	181	50%	No
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	362	99%	Yes
1982	360	99%	Yes
1983	365	100%	Yes

Latest Records

Latest records at Ridgetown
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 December 1983	Ridgetown, CA	daily low min	-22.5 C (-8.5 F)	2.5 C (4.5 F)	83 years	38 of 100 (Notable)
28 December 1983	Ridgetown, CA	daily snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	95 years	44 of 100 (Notable)
26 December 1983	Ridgetown, CA	daily low min	-21.0 C (-5.8 F)	0.4 C (0.7 F)	80 years	33 of 100 (Routine)
25 December 1983	Ridgetown, CA	daily low min	-22.0 C (-7.6 F)	1.0 C (1.8 F)	2 years	10 of 100 (Routine)
24 December 1983	Ridgetown, CA	monthly low max	-16.5 C (2.3 F)	0.4 C (0.7 F)	58 years	36 of 100 (Notable)
24 December 1983	Ridgetown, CA	daily low min	-22.0 C (-7.6 F)	0.3 C (0.5 F)	22 years	15 of 100 (Routine)
21 December 1983	Ridgetown, CA	daily snowfall	14.0 cm (5.5 in)	2.0 cm (0.8 in)	1 year	14 of 100 (Routine)
7 December 1983	Ridgetown, CA	daily snowfall	15.0 cm (5.9 in)	9.7 cm (3.8 in)	24 years	40 of 100 (Notable)
5 December 1983	Ridgetown, CA	daily rain	24.4 mm (1.0 in)	2.6 mm (0.10 in)	10 years	16 of 100 (Routine)
13 November 1983	Ridgetown, CA	daily low min	-8.0 C (17.6 F)	0.8 C (1.4 F)	96 years	39 of 100 (Notable)
10 September 1983	Ridgetown, CA	daily high max	33.0 C (91.4 F)	0.2 C (0.4 F)	85 years	34 of 100 (Routine)
6 September 1983	Ridgetown, CA	daily high min	22.0 C (71.6 F)	0.3 C (0.5 F)	12 years	12 of 100 (Routine)
20 August 1983	Ridgetown, CA	daily high min	23.5 C (74.3 F)	0.2 C (0.4 F)	14 years	13 of 100 (Routine)
11 August 1983	Ridgetown, CA	daily rain	36.0 mm (1.4 in)	11.9 mm (0.5 in)	18 years	25 of 100 (Routine)
15 July 1983	Ridgetown, CA	daily high max (Tie)	34.0 C (93.2 F)	tie	5 years	2 of 100 (Routine)
6 July 1983	Ridgetown, CA	daily low max	20.0 C (68.0 F)	0.6 C (1.1 F)	22 years	16 of 100 (Routine)
3 July 1983	Ridgetown, CA	daily high min	22.0 C (71.6 F)	0.3 C (0.5 F)	84 years	34 of 100 (Routine)
27 June 1983	Ridgetown, CA	daily rain	52.6 mm (2.1 in)	18.3 mm (0.7 in)	40 years	40 of 100 (Notable)
18 April 1983	Ridgetown, CA	daily low max	0.0 C (32.0 F)	2.8 C (5.0 F)	95 years	41 of 100 (Notable)
17 April 1983	Ridgetown, CA	daily low max	2.5 C (36.5 F)	0.8 C (1.4 F)	85 years	35 of 100 (Notable)

Climate Trend

72 complete years, 1886 to 1983

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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).