Saint John Weather Records (CA008104800)

Record envelope, standing records and threshold days for Saint John (CA008104800), New Brunswick, Canada, with 100 years of record.

Key Facts for Saint John

Saint John (CA008104800) is a weather station in New Brunswick, Canada at 45.28 latitude and -66.08 longitude, 31 m (102 ft) above sea level.
The station reports from 1871 to 1970, 100 years of record.
1,464 records set at Saint John still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Saint John set a daily record low minimum temperature of 3.3 C (37.9 F) on 3 September 1970.

About the Station

Location: New Brunswick, Canada, 45.28 latitude, -66.08 longitude.
Elevation: 31 m (102 ft).
Period of record: 1871 to 1970, 100 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 Saint John. 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 Saint John, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.8 C (55.0 F)	-30.0 C (-22.0 F)	n/a	n/a
Feb	10.6 C (51.1 F)	-28.9 C (-20.0 F)	n/a	n/a
Mar	16.7 C (62.1 F)	-23.3 C (-9.9 F)	n/a	n/a
Apr	23.9 C (75.0 F)	-16.7 C (1.9 F)	n/a	n/a
May	30.6 C (87.1 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	31.7 C (89.1 F)	1.7 C (35.1 F)	n/a	n/a
Jul	31.7 C (89.1 F)	5.0 C (41.0 F)	n/a	n/a
Aug	32.2 C (90.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-0.6 C (30.9 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	21.1 C (70.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Dec	15.0 C (59.0 F)	-29.4 C (-20.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Saint John still stand. 1885 holds the most, with 36.

Standing records at Saint John by the year they were set
Year set	Standing records
1871	22
1872	20
1873	18
1874	22
1875	18
1876	16
1877	14
1878	21
1879	22
1880	14
1881	20
1882	12
1883	19
1884	26
1885	36
1886	24
1887	17
1888	29
1889	18
1890	13
1891	16
1892	11
1893	13
1894	12
1895	17
1896	20
1897	19
1898	12
1899	14
1900	19
1901	10
1902	21
1903	8
1904	12
1905	9
1906	10
1907	13
1908	18
1909	18
1910	19
1911	23
1912	14
1913	21
1914	18
1915	10
1916	17
1917	21
1918	22
1919	10
1920	16
1921	18
1922	10
1923	20
1924	8
1925	16
1926	9
1927	16
1928	5
1929	12
1930	14
1931	6
1932	14
1933	12
1934	11
1935	10
1936	20
1937	10
1938	11
1939	7
1940	7
1941	9
1942	6
1943	14
1944	9
1945	15
1946	10
1947	20
1948	13
1949	21
1950	26
1951	24
1952	3
1953	27
1954	11
1955	8
1956	14
1957	17
1958	11
1959	9
1960	8
1961	14
1962	5
1966	11
1967	15
1968	16
1969	19
1970	9

All-Time Record Progression

7 new records

7 all-time records were set at Saint John between 24 June 1901 and 12 July 1969. Each dot is a new record.

When Saint John set new all-time records
Date	Kind	Detail
1901-06-24	Record daily precipitation	Record daily precipitation 123.7 mm (4.9 in)
1908-07-07	Record high minimum temperature	Record high minimum temperature 20.6 C (69.1 F)
1933-12-29	Record low maximum temperature	Record low maximum temperature -24.4 C (-11.9 F)
1935-08-17	Record high maximum temperature	Record high maximum temperature 32.2 C (90.0 F)
1945-09-08	Record high maximum temperature	Record high maximum temperature 33.9 C (93.0 F)
1957-01-15	Record low minimum temperature	Record low minimum temperature -30.0 C (-22.0 F)
1969-07-12	Record daily precipitation	Record daily precipitation 124.5 mm (4.9 in)

Wettest Day of Each Month

Jul: 124.5 mm (4.9 in)

The wettest day on record for each calendar month at Saint John. The most was 124.5 mm (4.9 in) on 12 July 1969.

Record daily precipitation for each month at Saint John
Month	Record daily precipitation (mm)	Date
Jan	84.8 mm (3.3 in)	6 January 1909
Feb	76.2 mm (3.0 in)	3 February 1970
Mar	109.7 mm (4.3 in)	13 March 1920
Apr	97.3 mm (3.8 in)	1 April 1962
May	84.8 mm (3.3 in)	3 May 1872
Jun	123.7 mm (4.9 in)	24 June 1901
Jul	124.5 mm (4.9 in)	12 July 1969
Aug	123.2 mm (4.9 in)	26 August 1924
Sep	117.9 mm (4.6 in)	16 September 1940
Oct	105.2 mm (4.1 in)	25 October 1926
Nov	91.7 mm (3.6 in)	27 November 1950
Dec	79.5 mm (3.1 in)	12 December 1959

Period of Record Coverage

1871 to 1970

97 years of record at Saint John, 1871 to 1970. 3 years have data for under 90 percent of days and are left out of rankings: 1962, 1966, 1970.

Days with data per year at Saint John
Year	Days with data	Share of year	Complete
1871	329	90%	Yes
1872	366	100%	Yes
1873	365	100%	Yes
1874	365	100%	Yes
1875	365	100%	Yes
1876	366	100%	Yes
1877	356	98%	Yes
1878	365	100%	Yes
1879	365	100%	Yes
1880	366	100%	Yes
1881	365	100%	Yes
1882	365	100%	Yes
1883	359	98%	Yes
1884	366	100%	Yes
1885	365	100%	Yes
1886	362	99%	Yes
1887	364	100%	Yes
1888	364	99%	Yes
1889	365	100%	Yes
1890	365	100%	Yes
1891	365	100%	Yes
1892	366	100%	Yes
1893	365	100%	Yes
1894	365	100%	Yes
1895	365	100%	Yes
1896	366	100%	Yes
1897	365	100%	Yes
1898	365	100%	Yes
1899	365	100%	Yes
1900	365	100%	Yes
1901	365	100%	Yes
1902	365	100%	Yes
1903	365	100%	Yes
1904	366	100%	Yes
1905	365	100%	Yes
1906	365	100%	Yes
1907	365	100%	Yes
1908	366	100%	Yes
1909	365	100%	Yes
1910	365	100%	Yes
1911	365	100%	Yes
1912	366	100%	Yes
1913	365	100%	Yes
1914	365	100%	Yes
1915	365	100%	Yes
1916	366	100%	Yes
1917	365	100%	Yes
1918	365	100%	Yes
1919	365	100%	Yes
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	364	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	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	359	98%	Yes
1957	364	100%	Yes
1958	364	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	363	99%	Yes
1962	178	49%	No
1966	182	50%	No
1967	336	92%	Yes
1968	333	91%	Yes
1969	340	93%	Yes
1970	230	63%	No

Latest Records

Latest records at Saint John
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 September 1970	Saint John, CA	daily low min	3.3 C (37.9 F)	2.8 C (5.0 F)	77 years	41 of 100 (Notable)
13 August 1970	Saint John, CA	daily high max	30.0 C (86.0 F)	2.8 C (5.0 F)	78 years	42 of 100 (Notable)
9 August 1970	Saint John, CA	daily high max (Tie)	27.8 C (82.0 F)	tie	20 years	4 of 100 (Routine)
14 June 1970	Saint John, CA	daily low min	2.8 C (37.0 F)	1.1 C (2.0 F)	85 years	40 of 100 (Notable)
19 May 1970	Saint John, CA	daily high min	11.1 C (52.0 F)	1.1 C (2.0 F)	80 years	38 of 100 (Notable)
17 May 1970	Saint John, CA	daily rain	43.2 mm (1.7 in)	11.2 mm (0.4 in)	88 years	47 of 100 (Notable)
11 May 1970	Saint John, CA	daily rain	38.1 mm (1.5 in)	10.4 mm (0.4 in)	19 years	25 of 100 (Routine)
15 April 1970	Saint John, CA	daily low min	-6.7 C (19.9 F)	0.6 C (1.1 F)	94 years	39 of 100 (Notable)
2 April 1970	Saint John, CA	daily rain	68.6 mm (2.7 in)	30.0 mm (1.2 in)	12 years	46 of 100 (Notable)
11 February 1970	Saint John, CA	daily high min (Tie)	1.7 C (35.1 F)	tie	44 years	5 of 100 (Routine)
4 February 1970	Saint John, CA	daily high max	10.0 C (50.0 F)	1.1 C (2.0 F)	2 years	12 of 100 (Routine)
3 February 1970	Saint John, CA	monthly rain	76.2 mm (3.0 in)	22.4 mm (0.9 in)	16 years	50 of 100 (Notable)
3 February 1970	Saint John, CA	daily high max	10.0 C (50.0 F)	1.1 C (2.0 F)	2 years	12 of 100 (Routine)
3 February 1970	Saint John, CA	monthly high min (Tie)	4.4 C (39.9 F)	tie	44 years	8 of 100 (Routine)
2 February 1970	Saint John, CA	daily high max	10.0 C (50.0 F)	2.2 C (4.0 F)	19 years	19 of 100 (Routine)
19 December 1969	Saint John, CA	daily snowfall	14.5 cm (5.7 in)	3.1 cm (1.2 in)	97 years	43 of 100 (Notable)
10 December 1969	Saint John, CA	daily high min	7.2 C (45.0 F)	0.5 C (0.9 F)	19 years	14 of 100 (Routine)
15 November 1969	Saint John, CA	daily high max	15.0 C (59.0 F)	1.7 C (3.1 F)	18 years	17 of 100 (Routine)
13 November 1969	Saint John, CA	daily high min	8.3 C (46.9 F)	0.5 C (0.9 F)	50 years	25 of 100 (Routine)
12 November 1969	Saint John, CA	daily high min (Tie)	9.4 C (48.9 F)	tie	58 years	6 of 100 (Routine)

Climate Trend

91 complete years, 1872 to 1968

One stripe for each of 91 complete years at Saint John, 1872 to 1968. Blue stripes are years cooler than the station's own mean of 5.4 C (41.7 F); red stripes are warmer. The coolest year was 1875, at 3.5 C (38.4 F), and the warmest was 1953, at 7.4 C (45.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Saint John as warming stripes, 1872 to 1968
Year	Annual mean temperature	Difference from the station mean
1872	4.4 C	-1.05 C
1873	4.4 C	-1.03 C
1874	4.7 C	-0.72 C
1875	3.5 C	-1.88 C
1876	4.4 C	-1.00 C
1877	5.4 C	-0.06 C
1878	5.7 C	+0.27 C
1879	4.3 C	-1.16 C
1880	4.9 C	-0.50 C
1881	5.0 C	-0.38 C
1882	4.3 C	-1.15 C
1883	4.2 C	-1.24 C
1884	4.5 C	-0.94 C
1885	4.4 C	-1.03 C
1886	5.1 C	-0.34 C
1887	4.5 C	-0.89 C
1888	4.2 C	-1.23 C
1889	6.1 C	+0.68 C
1890	5.1 C	-0.28 C
1891	6.2 C	+0.73 C
1892	5.7 C	+0.27 C
1893	5.0 C	-0.39 C
1894	5.2 C	-0.20 C
1895	5.8 C	+0.35 C
1896	5.3 C	-0.16 C
1897	5.4 C	+0.01 C
1898	5.9 C	+0.48 C
1899	5.3 C	-0.09 C
1900	6.0 C	+0.55 C
1901	6.2 C	+0.74 C
1902	6.3 C	+0.89 C
1903	5.9 C	+0.49 C
1904	4.4 C	-0.99 C
1905	5.0 C	-0.38 C
1906	6.0 C	+0.59 C
1907	4.9 C	-0.49 C
1908	5.9 C	+0.51 C
1909	6.1 C	+0.65 C
1910	6.4 C	+1.00 C
1911	5.7 C	+0.26 C
1912	5.1 C	-0.30 C
1913	6.3 C	+0.84 C
1914	4.7 C	-0.68 C
1915	6.1 C	+0.67 C
1916	4.9 C	-0.49 C
1917	4.1 C	-1.31 C
1918	4.6 C	-0.83 C
1919	5.4 C	-0.03 C
1920	5.1 C	-0.37 C
1921	5.9 C	+0.46 C
1922	5.0 C	-0.43 C
1923	4.4 C	-1.04 C
1924	5.0 C	-0.43 C
1925	5.0 C	-0.39 C
1926	4.4 C	-1.01 C
1927	5.8 C	+0.38 C
1928	5.5 C	+0.11 C
1929	5.3 C	-0.11 C
1930	6.1 C	+0.63 C
1931	6.6 C	+1.20 C
1932	6.1 C	+0.65 C
1933	5.5 C	+0.05 C
1934	4.9 C	-0.57 C
1935	5.1 C	-0.28 C
1936	5.5 C	+0.05 C
1937	6.6 C	+1.20 C
1938	5.9 C	+0.50 C
1939	5.3 C	-0.11 C
1940	5.2 C	-0.26 C
1941	5.6 C	+0.14 C
1942	5.8 C	+0.36 C
1943	5.1 C	-0.31 C
1944	5.8 C	+0.38 C
1945	5.9 C	+0.43 C
1946	6.0 C	+0.55 C
1947	6.2 C	+0.80 C
1948	5.4 C	-0.01 C
1949	6.7 C	+1.31 C
1950	5.9 C	+0.51 C
1951	6.9 C	+1.48 C
1952	6.8 C	+1.33 C
1953	7.4 C	+1.93 C
1954	6.3 C	+0.89 C
1955	5.2 C	-0.20 C
1956	5.2 C	-0.23 C
1957	5.8 C	+0.40 C
1958	5.1 C	-0.35 C
1959	5.4 C	-0.05 C
1960	6.3 C	+0.91 C
1961	5.5 C	+0.08 C
1968	5.6 C	+0.21 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1872 to 1968. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 91 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Saint John
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.3) per decade	1872 to 1968	91	Rise
Mean daily maximum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1872 to 1968	91	Rise
Mean daily minimum	0.1 C (0.1 to 0.2) per decade	0.2 F (0.1 to 0.3) per decade	1872 to 1968	91	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

1871 to 1970

Yearly extremes at Saint John: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.9 C (93.0 F)	1945	28.3 C (82.9 F)	97
Coldest night (TNn)	-30.0 C (-22.0 F)	1957	-25.0 C (-13.0 F)	97
Wettest day (Rx1day)	124.5 mm (4.9 in)	1969	62.2 mm (2.4 in)	97
Wettest five days (Rx5day)	214.9 mm (8.5 in)	1922	92.7 mm (3.6 in)	97
Longest dry spell (CDD)	25 days	1924	14 days	97

Hottest day (TXx)

The hottest day of the year at Saint John, 1871 to 1970. The record is 33.9 C (93.0 F) in 1945, marked on the chart; the median year is 28.3 C (82.9 F).

Hottest day (TXx) at Saint John by year
Year	Hottest day (TXx)
1871	26.1 C (79.0 F)
1872	26.7 C (80.1 F)
1873	27.8 C (82.0 F)
1874	26.7 C (80.1 F)
1875	28.9 C (84.0 F)
1876	28.3 C (82.9 F)
1877	26.1 C (79.0 F)
1878	25.6 C (78.1 F)
1879	27.2 C (81.0 F)
1880	27.8 C (82.0 F)
1881	26.7 C (80.1 F)
1882	27.8 C (82.0 F)
1883	27.8 C (82.0 F)
1884	29.4 C (84.9 F)
1885	27.2 C (81.0 F)
1886	30.0 C (86.0 F)
1887	31.7 C (89.1 F)
1888	27.8 C (82.0 F)
1889	30.6 C (87.1 F)
1890	26.7 C (80.1 F)
1891	27.2 C (81.0 F)
1892	30.6 C (87.1 F)
1893	31.1 C (88.0 F)
1894	27.8 C (82.0 F)
1895	30.0 C (86.0 F)
1896	29.4 C (84.9 F)
1897	28.9 C (84.0 F)
1898	27.2 C (81.0 F)
1899	26.7 C (80.1 F)
1900	31.7 C (89.1 F)
1901	28.9 C (84.0 F)
1902	25.6 C (78.1 F)
1903	28.3 C (82.9 F)
1904	27.2 C (81.0 F)
1905	26.7 C (80.1 F)
1906	27.8 C (82.0 F)
1907	25.0 C (77.0 F)
1908	29.4 C (84.9 F)
1909	27.8 C (82.0 F)
1910	25.6 C (78.1 F)
1911	27.8 C (82.0 F)
1912	25.6 C (78.1 F)
1913	26.7 C (80.1 F)
1914	27.2 C (81.0 F)
1915	26.7 C (80.1 F)
1916	26.7 C (80.1 F)
1917	30.0 C (86.0 F)
1918	28.3 C (82.9 F)
1919	28.9 C (84.0 F)
1920	28.3 C (82.9 F)
1921	30.6 C (87.1 F)
1922	25.6 C (78.1 F)
1923	29.4 C (84.9 F)
1924	28.3 C (82.9 F)
1925	31.7 C (89.1 F)
1926	28.3 C (82.9 F)
1927	26.1 C (79.0 F)
1928	29.4 C (84.9 F)
1929	28.9 C (84.0 F)
1930	30.6 C (87.1 F)
1931	28.9 C (84.0 F)
1932	27.2 C (81.0 F)
1933	26.7 C (80.1 F)
1934	26.7 C (80.1 F)
1935	32.2 C (90.0 F)
1936	29.4 C (84.9 F)
1937	30.6 C (87.1 F)
1938	28.9 C (84.0 F)
1939	28.9 C (84.0 F)
1940	30.0 C (86.0 F)
1941	31.1 C (88.0 F)
1942	29.4 C (84.9 F)
1943	31.1 C (88.0 F)
1944	29.4 C (84.9 F)
1945	33.9 C (93.0 F)
1946	28.3 C (82.9 F)
1947	27.8 C (82.0 F)
1948	30.6 C (87.1 F)
1949	30.6 C (87.1 F)
1950	26.7 C (80.1 F)
1951	27.8 C (82.0 F)
1952	29.4 C (84.9 F)
1953	30.6 C (87.1 F)
1954	27.8 C (82.0 F)
1955	28.9 C (84.0 F)
1956	27.8 C (82.0 F)
1957	26.1 C (79.0 F)
1958	26.1 C (79.0 F)
1959	27.8 C (82.0 F)
1960	28.9 C (84.0 F)
1961	27.8 C (82.0 F)
1962	27.2 C (81.0 F)
1966	28.3 C (82.9 F)
1967	27.8 C (82.0 F)
1968	30.6 C (87.1 F)
1969	31.1 C (88.0 F)
1970	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at Saint John, 1871 to 1970. The record is -30.0 C (-22.0 F) in 1957, marked on the chart; the median year is -25.0 C (-13.0 F).

Coldest night (TNn) at Saint John by year
Year	Coldest night (TNn)
1871	-29.4 C (-20.9 F)
1872	-26.7 C (-16.1 F)
1873	-23.3 C (-9.9 F)
1874	-27.2 C (-17.0 F)
1875	-27.2 C (-17.0 F)
1876	-28.3 C (-18.9 F)
1877	-25.0 C (-13.0 F)
1878	-26.1 C (-15.0 F)
1879	-26.7 C (-16.1 F)
1880	-23.3 C (-9.9 F)
1881	-20.6 C (-5.1 F)
1882	-23.9 C (-11.0 F)
1883	-25.6 C (-14.1 F)
1884	-28.9 C (-20.0 F)
1885	-26.1 C (-15.0 F)
1886	-28.3 C (-18.9 F)
1887	-27.2 C (-17.0 F)
1888	-25.6 C (-14.1 F)
1889	-25.6 C (-14.1 F)
1890	-29.4 C (-20.9 F)
1891	-23.3 C (-9.9 F)
1892	-21.1 C (-6.0 F)
1893	-23.9 C (-11.0 F)
1894	-25.0 C (-13.0 F)
1895	-21.7 C (-7.1 F)
1896	-26.1 C (-15.0 F)
1897	-25.6 C (-14.1 F)
1898	-26.1 C (-15.0 F)
1899	-25.0 C (-13.0 F)
1900	-23.3 C (-9.9 F)
1901	-26.1 C (-15.0 F)
1902	-25.6 C (-14.1 F)
1903	-25.0 C (-13.0 F)
1904	-26.1 C (-15.0 F)
1905	-23.9 C (-11.0 F)
1906	-22.8 C (-9.0 F)
1907	-27.2 C (-17.0 F)
1908	-25.0 C (-13.0 F)
1909	-23.3 C (-9.9 F)
1910	-22.2 C (-8.0 F)
1911	-25.6 C (-14.1 F)
1912	-25.0 C (-13.0 F)
1913	-23.9 C (-11.0 F)
1914	-28.9 C (-20.0 F)
1915	-23.9 C (-11.0 F)
1916	-24.4 C (-11.9 F)
1917	-28.9 C (-20.0 F)
1918	-25.6 C (-14.1 F)
1919	-27.2 C (-17.0 F)
1920	-28.9 C (-20.0 F)
1921	-21.1 C (-6.0 F)
1922	-25.6 C (-14.1 F)
1923	-26.1 C (-15.0 F)
1924	-28.3 C (-18.9 F)
1925	-28.3 C (-18.9 F)
1926	-25.0 C (-13.0 F)
1927	-22.8 C (-9.0 F)
1928	-23.3 C (-9.9 F)
1929	-24.4 C (-11.9 F)
1930	-22.2 C (-8.0 F)
1931	-21.1 C (-6.0 F)
1932	-20.0 C (-4.0 F)
1933	-29.4 C (-20.9 F)
1934	-28.9 C (-20.0 F)
1935	-27.8 C (-18.0 F)
1936	-22.8 C (-9.0 F)
1937	-20.6 C (-5.1 F)
1938	-24.4 C (-11.9 F)
1939	-22.2 C (-8.0 F)
1940	-22.2 C (-8.0 F)
1941	-21.1 C (-6.0 F)
1942	-25.0 C (-13.0 F)
1943	-28.9 C (-20.0 F)
1944	-22.8 C (-9.0 F)
1945	-23.9 C (-11.0 F)
1946	-23.9 C (-11.0 F)
1947	-23.3 C (-9.9 F)
1948	-26.1 C (-15.0 F)
1949	-21.1 C (-6.0 F)
1950	-23.9 C (-11.0 F)
1951	-28.9 C (-20.0 F)
1952	-22.8 C (-9.0 F)
1953	-18.9 C (-2.0 F)
1954	-25.6 C (-14.1 F)
1955	-25.0 C (-13.0 F)
1956	-21.1 C (-6.0 F)
1957	-30.0 C (-22.0 F)
1958	-21.1 C (-6.0 F)
1959	-24.4 C (-11.9 F)
1960	-24.4 C (-11.9 F)
1961	-24.4 C (-11.9 F)
1962	-16.1 C (3.0 F)
1966	-13.9 C (7.0 F)
1967	-27.2 C (-17.0 F)
1968	-25.6 C (-14.1 F)
1969	-19.4 C (-2.9 F)
1970	-20.6 C (-5.1 F)

Wettest day (Rx1day)

The wettest day of the year at Saint John, 1871 to 1970. The record is 124.5 mm (4.9 in) in 1969, marked on the chart; the median year is 62.2 mm (2.4 in).

Wettest day (Rx1day) at Saint John by year
Year	Wettest day (Rx1day)
1871	67.8 mm (2.7 in)
1872	84.8 mm (3.3 in)
1873	40.1 mm (1.6 in)
1874	55.4 mm (2.2 in)
1875	48.5 mm (1.9 in)
1876	57.9 mm (2.3 in)
1877	58.9 mm (2.3 in)
1878	58.4 mm (2.3 in)
1879	78.2 mm (3.1 in)
1880	65.8 mm (2.6 in)
1881	65.3 mm (2.6 in)
1882	61.0 mm (2.4 in)
1883	69.9 mm (2.8 in)
1884	47.8 mm (1.9 in)
1885	51.6 mm (2.0 in)
1886	86.1 mm (3.4 in)
1887	77.7 mm (3.1 in)
1888	62.2 mm (2.4 in)
1889	53.1 mm (2.1 in)
1890	45.5 mm (1.8 in)
1891	48.8 mm (1.9 in)
1892	89.9 mm (3.5 in)
1893	68.3 mm (2.7 in)
1894	71.4 mm (2.8 in)
1895	91.9 mm (3.6 in)
1896	64.8 mm (2.6 in)
1897	49.0 mm (1.9 in)
1898	46.2 mm (1.8 in)
1899	54.9 mm (2.2 in)
1900	103.1 mm (4.1 in)
1901	123.7 mm (4.9 in)
1902	58.9 mm (2.3 in)
1903	48.8 mm (1.9 in)
1904	91.9 mm (3.6 in)
1905	70.6 mm (2.8 in)
1906	43.9 mm (1.7 in)
1907	47.0 mm (1.9 in)
1908	40.1 mm (1.6 in)
1909	84.8 mm (3.3 in)
1910	59.4 mm (2.3 in)
1911	47.2 mm (1.9 in)
1912	69.9 mm (2.8 in)
1913	41.9 mm (1.6 in)
1914	49.5 mm (1.9 in)
1915	66.0 mm (2.6 in)
1916	46.5 mm (1.8 in)
1917	45.2 mm (1.8 in)
1918	69.1 mm (2.7 in)
1919	55.6 mm (2.2 in)
1920	109.7 mm (4.3 in)
1921	35.1 mm (1.4 in)
1922	89.9 mm (3.5 in)
1923	51.1 mm (2.0 in)
1924	123.2 mm (4.9 in)
1925	46.0 mm (1.8 in)
1926	105.2 mm (4.1 in)
1927	84.6 mm (3.3 in)
1928	46.2 mm (1.8 in)
1929	88.6 mm (3.5 in)
1930	55.1 mm (2.2 in)
1931	54.6 mm (2.1 in)
1932	86.6 mm (3.4 in)
1933	85.9 mm (3.4 in)
1934	55.9 mm (2.2 in)
1935	71.4 mm (2.8 in)
1936	45.7 mm (1.8 in)
1937	48.0 mm (1.9 in)
1938	77.7 mm (3.1 in)
1939	59.4 mm (2.3 in)
1940	117.9 mm (4.6 in)
1941	60.5 mm (2.4 in)
1942	50.0 mm (2.0 in)
1943	89.9 mm (3.5 in)
1944	59.7 mm (2.4 in)
1945	53.8 mm (2.1 in)
1946	49.5 mm (1.9 in)
1947	75.2 mm (3.0 in)
1948	48.3 mm (1.9 in)
1949	60.5 mm (2.4 in)
1950	91.7 mm (3.6 in)
1951	44.5 mm (1.8 in)
1952	67.6 mm (2.7 in)
1953	69.1 mm (2.7 in)
1954	63.5 mm (2.5 in)
1955	80.0 mm (3.1 in)
1956	39.9 mm (1.6 in)
1957	66.0 mm (2.6 in)
1958	73.2 mm (2.9 in)
1959	86.1 mm (3.4 in)
1960	75.9 mm (3.0 in)
1961	52.6 mm (2.1 in)
1962	97.3 mm (3.8 in)
1966	79.0 mm (3.1 in)
1967	73.7 mm (2.9 in)
1968	60.7 mm (2.4 in)
1969	124.5 mm (4.9 in)
1970	76.2 mm (3.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Saint John, 1871 to 1970. The record is 214.9 mm (8.5 in) in 1922, marked on the chart; the median year is 92.7 mm (3.6 in).

Wettest five days (Rx5day) at Saint John by year
Year	Wettest five days (Rx5day)
1871	68.6 mm (2.7 in)
1872	135.4 mm (5.3 in)
1873	67.8 mm (2.7 in)
1874	82.6 mm (3.3 in)
1875	96.2 mm (3.8 in)
1876	128.3 mm (5.1 in)
1877	92.7 mm (3.6 in)
1878	112.7 mm (4.4 in)
1879	127.7 mm (5.0 in)
1880	89.2 mm (3.5 in)
1881	127.3 mm (5.0 in)
1882	97.8 mm (3.9 in)
1883	85.4 mm (3.4 in)
1884	101.3 mm (4.0 in)
1885	86.9 mm (3.4 in)
1886	110.7 mm (4.4 in)
1887	127.8 mm (5.0 in)
1888	89.1 mm (3.5 in)
1889	63.0 mm (2.5 in)
1890	100.1 mm (3.9 in)
1891	61.2 mm (2.4 in)
1892	125.2 mm (4.9 in)
1893	81.3 mm (3.2 in)
1894	93.5 mm (3.7 in)
1895	115.8 mm (4.6 in)
1896	77.8 mm (3.1 in)
1897	73.7 mm (2.9 in)
1898	79.8 mm (3.1 in)
1899	68.8 mm (2.7 in)
1900	212.6 mm (8.4 in)
1901	129.8 mm (5.1 in)
1902	129.5 mm (5.1 in)
1903	96.1 mm (3.8 in)
1904	123.7 mm (4.9 in)
1905	133.9 mm (5.3 in)
1906	89.8 mm (3.5 in)
1907	77.2 mm (3.0 in)
1908	64.0 mm (2.5 in)
1909	113.4 mm (4.5 in)
1910	128.5 mm (5.1 in)
1911	54.3 mm (2.1 in)
1912	124.4 mm (4.9 in)
1913	75.7 mm (3.0 in)
1914	68.8 mm (2.7 in)
1915	83.4 mm (3.3 in)
1916	83.1 mm (3.3 in)
1917	84.6 mm (3.3 in)
1918	95.2 mm (3.7 in)
1919	93.9 mm (3.7 in)
1920	129.5 mm (5.1 in)
1921	59.5 mm (2.3 in)
1922	214.9 mm (8.5 in)
1923	60.4 mm (2.4 in)
1924	128.3 mm (5.1 in)
1925	72.2 mm (2.8 in)
1926	123.7 mm (4.9 in)
1927	94.8 mm (3.7 in)
1928	65.2 mm (2.6 in)
1929	102.9 mm (4.1 in)
1930	80.5 mm (3.2 in)
1931	87.8 mm (3.5 in)
1932	115.0 mm (4.5 in)
1933	126.3 mm (5.0 in)
1934	74.4 mm (2.9 in)
1935	141.8 mm (5.6 in)
1936	68.4 mm (2.7 in)
1937	88.6 mm (3.5 in)
1938	95.8 mm (3.8 in)
1939	84.5 mm (3.3 in)
1940	145.1 mm (5.7 in)
1941	76.5 mm (3.0 in)
1942	64.6 mm (2.5 in)
1943	172.2 mm (6.8 in)
1944	83.6 mm (3.3 in)
1945	83.1 mm (3.3 in)
1946	62.0 mm (2.4 in)
1947	85.1 mm (3.4 in)
1948	77.8 mm (3.1 in)
1949	101.6 mm (4.0 in)
1950	135.4 mm (5.3 in)
1951	68.8 mm (2.7 in)
1952	85.9 mm (3.4 in)
1953	111.0 mm (4.4 in)
1954	96.0 mm (3.8 in)
1955	86.9 mm (3.4 in)
1956	82.6 mm (3.3 in)
1957	73.9 mm (2.9 in)
1958	108.7 mm (4.3 in)
1959	119.9 mm (4.7 in)
1960	90.8 mm (3.6 in)
1961	96.8 mm (3.8 in)
1962	122.7 mm (4.8 in)
1966	88.4 mm (3.5 in)
1967	129.6 mm (5.1 in)
1968	80.5 mm (3.2 in)
1969	198.1 mm (7.8 in)
1970	122.0 mm (4.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Saint John, 1871 to 1970. The record is 25 days in 1924, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Saint John by year
Year	Longest dry spell (CDD)
1871	10 days
1872	9 days
1873	9 days
1874	15 days
1875	13 days
1876	14 days
1877	11 days
1878	15 days
1879	17 days
1880	20 days
1881	13 days
1882	17 days
1883	16 days
1884	9 days
1885	18 days
1886	13 days
1887	17 days
1888	15 days
1889	24 days
1890	15 days
1891	17 days
1892	14 days
1893	17 days
1894	18 days
1895	18 days
1896	12 days
1897	18 days
1898	13 days
1899	15 days
1900	14 days
1901	16 days
1902	13 days
1903	10 days
1904	13 days
1905	14 days
1906	13 days
1907	11 days
1908	21 days
1909	12 days
1910	10 days
1911	20 days
1912	11 days
1913	11 days
1914	17 days
1915	14 days
1916	11 days
1917	14 days
1918	17 days
1919	14 days
1920	15 days
1921	17 days
1922	14 days
1923	12 days
1924	25 days
1925	15 days
1926	16 days
1927	10 days
1928	10 days
1929	18 days
1930	21 days
1931	17 days
1932	18 days
1933	12 days
1934	14 days
1935	11 days
1936	8 days
1937	14 days
1938	17 days
1939	15 days
1940	14 days
1941	15 days
1942	17 days
1943	14 days
1944	19 days
1945	16 days
1946	10 days
1947	25 days
1948	14 days
1949	14 days
1950	16 days
1951	17 days
1952	13 days
1953	15 days
1954	16 days
1955	12 days
1956	15 days
1957	10 days
1958	10 days
1959	11 days
1960	11 days
1961	22 days
1962	10 days
1966	11 days
1967	12 days
1968	19 days
1969	17 days
1970	21 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

91 years with a frost

Across 91 years with a frost, the median last spring frost at Saint John falls on 3 May and the median first autumn frost on 16 October, which leaves a median of 167 days between them.

In 1933 to 1968 the median growing season was 169 days. That is 7 days more than in 1872 to 1901.

Fitted over all years, the growing season changes by +1.3 days per decade at this station.

Frost dates and growing season at Saint John
Measure	Median, all years	Earliest period (1872 to 1901)	Recent period (1933 to 1968)	Recent against earliest	Fitted trend
Last spring frost	3 May	5 May	3 May	2 days earlier	-0.3 days per decade
First autumn frost	16 October	13 October	16 October	3 days later	+1.0 days per decade
Growing days	167 days	162 days	169 days	7 days more	+1.3 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

94 years, 1871 to 1969

A day with at least 62.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 137.8 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Saint John: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	62.2 mm (2.4 in)
5 years	80.4 mm (3.2 in)
10 years	93.2 mm (3.7 in)
25 years	110.4 mm (4.3 in)
50 years	123.9 mm (4.9 in)
100 years	137.8 mm (5.4 in)	Longer than the 94 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, 94 years of values from 1871 to 1969.

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: 124.5 mm (4.9 in) in 1969; 123.7 mm (4.9 in) in 1901; 123.2 mm (4.9 in) in 1924.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Saint John standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Saint John 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).