New Westminster Weather Records (CA001105550)

Record envelope, standing records and threshold days for New Westminster (CA001105550), British Columbia, Canada, with 93 years of record.

Key Facts for New Westminster

New Westminster (CA001105550) is a weather station in British Columbia, Canada at 49.22 latitude and -122.93 longitude, 119 m (390 ft) above sea level.
The station reports from 1874 to 1966, 93 years of record.
1,464 records set at New Westminster still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
New Westminster set a daily record high minimum temperature of 16.1 C (61.0 F) on 16 June 1966.

About the Station

Location: British Columbia, Canada, 49.22 latitude, -122.93 longitude.
Elevation: 119 m (390 ft).
Period of record: 1874 to 1966, 93 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 New Westminster. 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 New Westminster, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	16.7 C (62.1 F)	-20.6 C (-5.1 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-15.0 C (5.0 F)	n/a	n/a
Mar	22.8 C (73.0 F)	-11.7 C (10.9 F)	n/a	n/a
Apr	27.8 C (82.0 F)	-6.7 C (19.9 F)	n/a	n/a
May	32.8 C (91.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	37.2 C (99.0 F)	2.8 C (37.0 F)	n/a	n/a
Jul	37.2 C (99.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	35.6 C (96.1 F)	2.8 C (37.0 F)	n/a	n/a
Sep	34.4 C (93.9 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	26.7 C (80.1 F)	-5.6 C (21.9 F)	n/a	n/a
Nov	19.4 C (66.9 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-17.8 C (0.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at New Westminster still stand. 1896 holds the most, with 52.

Standing records at New Westminster by the year they were set
Year set	Standing records
1874	2
1875	36
1876	14
1877	16
1878	18
1879	24
1880	21
1881	18
1882	5
1894	15
1895	22
1896	52
1897	18
1898	13
1899	20
1900	23
1901	28
1902	17
1903	11
1904	15
1905	35
1906	23
1907	14
1908	19
1909	29
1910	23
1911	19
1912	12
1913	21
1914	21
1915	9
1916	28
1917	26
1918	12
1919	23
1920	10
1921	7
1922	23
1923	19
1924	23
1925	12
1926	27
1927	16
1929	11
1930	6
1931	17
1932	24
1933	12
1934	36
1935	27
1936	19
1937	12
1938	16
1939	31
1940	22
1941	36
1942	15
1943	19
1944	16
1945	13
1946	8
1947	19
1948	7
1949	15
1950	19
1951	13
1952	8
1953	9
1954	9
1955	31
1956	21
1957	3
1958	23
1959	4
1960	16
1961	20
1962	18
1963	27
1964	10
1965	10
1966	3

All-Time Record Progression

3 new records

3 all-time records were set at New Westminster between 25 June 1925 and 15 July 1941. Each dot is a new record.

When New Westminster set new all-time records
Date	Kind	Detail
1925-06-25	Record high maximum temperature	Record high maximum temperature 37.2 C (99.0 F)
1935-01-21	Record daily snowfall	Record daily snowfall 45.7 cm (18.0 in)
1941-07-15	Record high minimum temperature	Record high minimum temperature 21.7 C (71.1 F)

Wettest Day of Each Month

Jan: 132.3 mm (5.2 in)

The wettest day on record for each calendar month at New Westminster. The most was 132.3 mm (5.2 in) on 5 January 1896.

Record daily precipitation for each month at New Westminster
Month	Record daily precipitation (mm)	Date
Jan	132.3 mm (5.2 in)	5 January 1896
Feb	86.9 mm (3.4 in)	7 February 1945
Mar	104.1 mm (4.1 in)	9 March 1900
Apr	46.7 mm (1.8 in)	11 April 1946
May	41.9 mm (1.6 in)	31 May 1940
Jun	49.5 mm (1.9 in)	14 June 1942
Jul	71.1 mm (2.8 in)	16 July 1898
Aug	47.5 mm (1.9 in)	15 August 1912
Sep	83.3 mm (3.3 in)	6 September 1906
Oct	78.2 mm (3.1 in)	18 October 1875
Nov	110.5 mm (4.4 in)	28 November 1909
Dec	113.0 mm (4.4 in)	8 December 1956

Period of Record Coverage

1874 to 1966

81 years of record at New Westminster, 1874 to 1966. 5 years have data for under 90 percent of days and are left out of rankings: 1874, 1882, 1894, 1957, 1966.

Days with data per year at New Westminster
Year	Days with data	Share of year	Complete
1874	60	16%	No
1875	358	98%	Yes
1876	341	93%	Yes
1877	357	98%	Yes
1878	353	97%	Yes
1879	354	97%	Yes
1880	358	98%	Yes
1881	359	98%	Yes
1882	59	16%	No
1894	214	59%	No
1895	343	94%	Yes
1896	365	100%	Yes
1897	334	92%	Yes
1898	365	100%	Yes
1899	350	96%	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	335	92%	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
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	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	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	347	95%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	251	69%	No
1958	364	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	362	99%	Yes
1965	365	100%	Yes
1966	181	50%	No

Latest Records

Latest records at New Westminster
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 June 1966	New Westminster, CA	daily high min	16.1 C (61.0 F)	1.1 C (2.0 F)	3 years	13 of 100 (Routine)
27 May 1966	New Westminster, CA	daily low min	2.8 C (37.0 F)	0.5 C (0.9 F)	90 years	37 of 100 (Notable)
6 May 1966	New Westminster, CA	daily rain	21.3 mm (0.8 in)	2.2 mm (0.09 in)	85 years	20 of 100 (Routine)
5 May 1966	New Westminster, CA	daily high min (Tie)	12.8 C (55.0 F)	tie	12 years	3 of 100 (Routine)
11 April 1966	New Westminster, CA	daily low max	7.8 C (46.0 F)	1.1 C (2.0 F)	66 years	31 of 100 (Routine)
5 April 1966	New Westminster, CA	daily high max (Tie)	19.4 C (66.9 F)	tie	60 years	6 of 100 (Routine)
28 February 1966	New Westminster, CA	daily snowfall	13.7 cm (5.4 in)	3.5 cm (1.4 in)	47 years	28 of 100 (Routine)
22 February 1966	New Westminster, CA	daily high max (Tie)	12.8 C (55.0 F)	tie	88 years	8 of 100 (Routine)
12 January 1966	New Westminster, CA	daily rain	56.4 mm (2.2 in)	19.8 mm (0.8 in)	64 years	45 of 100 (Notable)
2 January 1966	New Westminster, CA	daily snowfall	18.8 cm (7.4 in)	12.4 cm (4.9 in)	52 years	41 of 100 (Notable)
28 December 1965	New Westminster, CA	daily low max	-1.7 C (28.9 F)	0.6 C (1.1 F)	70 years	31 of 100 (Routine)
28 December 1965	New Westminster, CA	daily snowfall	9.1 cm (3.6 in)	1.5 cm (0.6 in)	42 years	23 of 100 (Routine)
27 December 1965	New Westminster, CA	daily snowfall	13.7 cm (5.4 in)	0.2 cm (0.1 in)	69 years	29 of 100 (Routine)
24 December 1965	New Westminster, CA	daily snowfall	6.6 cm (2.6 in)	0.2 cm (0.1 in)	50 years	24 of 100 (Routine)
1 November 1965	New Westminster, CA	daily rain	49.5 mm (1.9 in)	12.9 mm (0.5 in)	51 years	35 of 100 (Notable)
26 October 1965	New Westminster, CA	daily high max (Tie)	18.9 C (66.0 F)	tie	24 years	4 of 100 (Routine)
23 October 1965	New Westminster, CA	daily high max	21.1 C (70.0 F)	0.5 C (0.9 F)	64 years	29 of 100 (Routine)
23 August 1965	New Westminster, CA	daily low max	13.9 C (57.0 F)	0.5 C (0.9 F)	4 years	11 of 100 (Routine)
18 August 1965	New Westminster, CA	daily high min	17.2 C (63.0 F)	0.5 C (0.9 F)	12 years	14 of 100 (Routine)
3 August 1965	New Westminster, CA	daily low max (Tie)	15.6 C (60.1 F)	tie	87 years	8 of 100 (Routine)

Climate Trend

72 complete years, 1875 to 1965

One stripe for each of 72 complete years at New Westminster, 1875 to 1965. Blue stripes are years cooler than the station's own mean of 9.9 C (49.9 F); red stripes are warmer. The coolest year was 1880, at 8.1 C (46.6 F), and the warmest was 1934, at 11.8 C (53.2 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at New Westminster as warming stripes, 1875 to 1965
Year	Annual mean temperature	Difference from the station mean
1875	8.4 C	-1.55 C
1876	9.0 C	-0.98 C
1877	10.2 C	+0.23 C
1878	10.3 C	+0.38 C
1879	9.0 C	-0.89 C
1880	8.1 C	-1.82 C
1881	8.9 C	-1.00 C
1895	10.1 C	+0.12 C
1896	9.5 C	-0.43 C
1898	10.0 C	+0.06 C
1900	9.9 C	-0.05 C
1901	9.3 C	-0.63 C
1902	9.4 C	-0.54 C
1903	9.0 C	-0.91 C
1904	9.7 C	-0.24 C
1905	9.8 C	-0.17 C
1906	9.9 C	-0.05 C
1908	9.3 C	-0.68 C
1909	8.3 C	-1.68 C
1910	9.2 C	-0.73 C
1911	8.7 C	-1.21 C
1912	9.7 C	-0.20 C
1913	9.0 C	-0.94 C
1914	10.1 C	+0.19 C
1915	10.6 C	+0.69 C
1916	8.3 C	-1.60 C
1917	9.1 C	-0.82 C
1918	10.0 C	+0.04 C
1919	9.4 C	-0.50 C
1920	9.7 C	-0.20 C
1921	9.8 C	-0.15 C
1922	9.5 C	-0.40 C
1923	10.6 C	+0.64 C
1924	10.4 C	+0.50 C
1925	11.0 C	+1.09 C
1926	11.5 C	+1.54 C
1927	10.1 C	+0.17 C
1929	9.5 C	-0.40 C
1930	10.1 C	+0.16 C
1931	11.0 C	+1.05 C
1932	10.4 C	+0.51 C
1933	10.0 C	+0.04 C
1934	11.8 C	+1.85 C
1935	10.4 C	+0.49 C
1936	10.3 C	+0.35 C
1937	9.9 C	-0.04 C
1938	10.9 C	+0.96 C
1939	11.1 C	+1.12 C
1940	11.7 C	+1.80 C
1941	11.6 C	+1.65 C
1942	10.6 C	+0.66 C
1943	9.9 C	-0.01 C
1944	10.8 C	+0.87 C
1945	10.4 C	+0.43 C
1946	10.1 C	+0.18 C
1947	10.5 C	+0.59 C
1948	9.5 C	-0.41 C
1949	9.8 C	-0.17 C
1950	9.2 C	-0.78 C
1952	10.1 C	+0.17 C
1953	10.5 C	+0.60 C
1954	9.5 C	-0.47 C
1955	8.4 C	-1.50 C
1956	9.4 C	-0.54 C
1958	11.6 C	+1.68 C
1959	9.8 C	-0.13 C
1960	10.1 C	+0.12 C
1961	10.7 C	+0.77 C
1962	10.3 C	+0.37 C
1963	10.7 C	+0.75 C
1964	9.5 C	-0.40 C
1965	10.2 C	+0.22 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1875 to 1965. In Fahrenheit: 0.3 F (0.1 to 0.4) 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 New Westminster
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.1 C (0.1 to 0.2) per decade	0.3 F (0.1 to 0.4) per decade	1875 to 1965	72	Rise
Mean daily maximum	0.11 C (0.03 to 0.19) per decade	0.2 F (0.1 to 0.3) per decade	1875 to 1965	72	Rise
Mean daily minimum	0.2 C (0.1 to 0.2) per decade	0.3 F (0.2 to 0.4) per decade	1875 to 1965	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

1874 to 1966

Yearly extremes at New Westminster: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	1925	32.2 C (90.0 F)	81
Coldest night (TNn)	-20.6 C (-5.1 F)	1875	-11.1 C (12.0 F)	81
Wettest day (Rx1day)	132.3 mm (5.2 in)	1896	59.2 mm (2.3 in)	81
Wettest five days (Rx5day)	367.5 mm (14.5 in)	1935	119.9 mm (4.7 in)	81
Longest dry spell (CDD)	62 days	1951	23 days	81

Hottest day (TXx)

The hottest day of the year at New Westminster, 1874 to 1966. The record is 37.2 C (99.0 F) in 1925, marked on the chart; the median year is 32.2 C (90.0 F).

Hottest day (TXx) at New Westminster by year
Year	Hottest day (TXx)
1874	26.1 C (79.0 F)
1875	33.3 C (91.9 F)
1876	30.6 C (87.1 F)
1877	32.8 C (91.0 F)
1878	30.0 C (86.0 F)
1879	30.6 C (87.1 F)
1880	32.2 C (90.0 F)
1881	28.3 C (82.9 F)
1882	8.3 C (46.9 F)
1894	33.3 C (91.9 F)
1895	33.3 C (91.9 F)
1896	33.3 C (91.9 F)
1897	32.8 C (91.0 F)
1898	34.4 C (93.9 F)
1899	32.2 C (90.0 F)
1900	30.6 C (87.1 F)
1901	28.9 C (84.0 F)
1902	32.8 C (91.0 F)
1903	31.7 C (89.1 F)
1904	30.6 C (87.1 F)
1905	31.7 C (89.1 F)
1906	32.2 C (90.0 F)
1907	32.8 C (91.0 F)
1908	33.9 C (93.0 F)
1909	27.8 C (82.0 F)
1910	31.1 C (88.0 F)
1911	32.2 C (90.0 F)
1912	32.2 C (90.0 F)
1913	32.2 C (90.0 F)
1914	31.1 C (88.0 F)
1915	34.4 C (93.9 F)
1916	31.1 C (88.0 F)
1917	31.1 C (88.0 F)
1918	31.1 C (88.0 F)
1919	30.0 C (86.0 F)
1920	33.3 C (91.9 F)
1921	28.9 C (84.0 F)
1922	32.8 C (91.0 F)
1923	33.3 C (91.9 F)
1924	33.9 C (93.0 F)
1925	37.2 C (99.0 F)
1926	32.8 C (91.0 F)
1927	32.8 C (91.0 F)
1929	29.4 C (84.9 F)
1930	31.1 C (88.0 F)
1931	35.6 C (96.1 F)
1932	32.2 C (90.0 F)
1933	32.8 C (91.0 F)
1934	33.3 C (91.9 F)
1935	33.3 C (91.9 F)
1936	31.7 C (89.1 F)
1937	30.6 C (87.1 F)
1938	34.4 C (93.9 F)
1939	35.0 C (95.0 F)
1940	33.9 C (93.0 F)
1941	37.2 C (99.0 F)
1942	35.0 C (95.0 F)
1943	30.6 C (87.1 F)
1944	36.1 C (97.0 F)
1945	33.3 C (91.9 F)
1946	32.8 C (91.0 F)
1947	32.2 C (90.0 F)
1948	31.7 C (89.1 F)
1949	30.6 C (87.1 F)
1950	28.9 C (84.0 F)
1951	32.8 C (91.0 F)
1952	31.1 C (88.0 F)
1953	29.4 C (84.9 F)
1954	25.6 C (78.1 F)
1955	32.2 C (90.0 F)
1956	32.8 C (91.0 F)
1957	27.2 C (81.0 F)
1958	34.4 C (93.9 F)
1959	31.7 C (89.1 F)
1960	34.4 C (93.9 F)
1961	35.6 C (96.1 F)
1962	28.9 C (84.0 F)
1963	31.7 C (89.1 F)
1964	29.4 C (84.9 F)
1965	34.4 C (93.9 F)
1966	27.2 C (81.0 F)

Coldest night (TNn)

The coldest night of the year at New Westminster, 1874 to 1966. The record is -20.6 C (-5.1 F) in 1875, marked on the chart; the median year is -11.1 C (12.0 F).

Coldest night (TNn) at New Westminster by year
Year	Coldest night (TNn)
1874	-2.8 C (27.0 F)
1875	-20.6 C (-5.1 F)
1876	-12.2 C (10.0 F)
1877	-6.1 C (21.0 F)
1878	-6.1 C (21.0 F)
1879	-12.8 C (9.0 F)
1880	-12.8 C (9.0 F)
1881	-12.8 C (9.0 F)
1882	-13.3 C (8.1 F)
1894	-6.7 C (19.9 F)
1895	-6.7 C (19.9 F)
1896	-15.0 C (5.0 F)
1897	-10.0 C (14.0 F)
1898	-6.1 C (21.0 F)
1899	-12.2 C (10.0 F)
1900	-11.1 C (12.0 F)
1901	-12.2 C (10.0 F)
1902	-16.7 C (1.9 F)
1903	-10.0 C (14.0 F)
1904	-11.1 C (12.0 F)
1905	-10.6 C (12.9 F)
1906	-10.0 C (14.0 F)
1907	-16.7 C (1.9 F)
1908	-9.4 C (15.1 F)
1909	-16.1 C (3.0 F)
1910	-11.1 C (12.0 F)
1911	-17.8 C (0.0 F)
1912	-10.0 C (14.0 F)
1913	-12.8 C (9.0 F)
1914	-10.0 C (14.0 F)
1915	-7.2 C (19.0 F)
1916	-17.2 C (1.0 F)
1917	-15.0 C (5.0 F)
1918	-8.9 C (16.0 F)
1919	-12.2 C (10.0 F)
1920	-7.2 C (19.0 F)
1921	-10.6 C (12.9 F)
1922	-12.8 C (9.0 F)
1923	-12.2 C (10.0 F)
1924	-12.2 C (10.0 F)
1925	-2.2 C (28.0 F)
1926	-9.4 C (15.1 F)
1927	-10.6 C (12.9 F)
1929	-14.4 C (6.1 F)
1930	-11.7 C (10.9 F)
1931	-4.4 C (24.1 F)
1932	-10.6 C (12.9 F)
1933	-11.7 C (10.9 F)
1934	-3.9 C (25.0 F)
1935	-16.1 C (3.0 F)
1936	-14.4 C (6.1 F)
1937	-13.3 C (8.1 F)
1938	-5.0 C (23.0 F)
1939	-10.6 C (12.9 F)
1940	-6.7 C (19.9 F)
1941	-8.3 C (17.1 F)
1942	-8.9 C (16.0 F)
1943	-18.3 C (-0.9 F)
1944	-7.8 C (18.0 F)
1945	-7.2 C (19.0 F)
1946	-7.2 C (19.0 F)
1947	-13.3 C (8.1 F)
1948	-11.1 C (12.0 F)
1949	-11.1 C (12.0 F)
1950	-18.9 C (-2.0 F)
1951	-13.9 C (7.0 F)
1952	-13.9 C (7.0 F)
1953	-3.9 C (25.0 F)
1954	-13.3 C (8.1 F)
1955	-13.3 C (8.1 F)
1956	-14.4 C (6.1 F)
1957	-13.9 C (7.0 F)
1958	-6.7 C (19.9 F)
1959	-12.2 C (10.0 F)
1960	-5.0 C (23.0 F)
1961	-5.6 C (21.9 F)
1962	-13.9 C (7.0 F)
1963	-11.1 C (12.0 F)
1964	-17.8 C (0.0 F)
1965	-5.6 C (21.9 F)
1966	-6.1 C (21.0 F)

Wettest day (Rx1day)

The wettest day of the year at New Westminster, 1874 to 1966. The record is 132.3 mm (5.2 in) in 1896, marked on the chart; the median year is 59.2 mm (2.3 in).

Wettest day (Rx1day) at New Westminster by year
Year	Wettest day (Rx1day)
1874	23.9 mm (0.9 in)
1875	78.2 mm (3.1 in)
1876	53.3 mm (2.1 in)
1877	49.8 mm (2.0 in)
1878	37.6 mm (1.5 in)
1879	71.1 mm (2.8 in)
1880	101.6 mm (4.0 in)
1881	71.4 mm (2.8 in)
1882	20.3 mm (0.8 in)
1894	58.7 mm (2.3 in)
1895	61.2 mm (2.4 in)
1896	132.3 mm (5.2 in)
1897	72.1 mm (2.8 in)
1898	71.1 mm (2.8 in)
1899	85.1 mm (3.4 in)
1900	104.1 mm (4.1 in)
1901	76.5 mm (3.0 in)
1902	74.2 mm (2.9 in)
1903	63.0 mm (2.5 in)
1904	35.6 mm (1.4 in)
1905	67.3 mm (2.6 in)
1906	83.3 mm (3.3 in)
1907	50.3 mm (2.0 in)
1908	59.9 mm (2.4 in)
1909	110.5 mm (4.4 in)
1910	53.8 mm (2.1 in)
1911	33.8 mm (1.3 in)
1912	47.5 mm (1.9 in)
1913	47.2 mm (1.9 in)
1914	45.5 mm (1.8 in)
1915	42.9 mm (1.7 in)
1916	73.7 mm (2.9 in)
1917	58.9 mm (2.3 in)
1918	82.0 mm (3.2 in)
1919	66.0 mm (2.6 in)
1920	75.4 mm (3.0 in)
1921	70.9 mm (2.8 in)
1922	38.1 mm (1.5 in)
1923	52.1 mm (2.1 in)
1924	54.6 mm (2.1 in)
1925	50.5 mm (2.0 in)
1926	52.1 mm (2.1 in)
1927	42.2 mm (1.7 in)
1929	38.1 mm (1.5 in)
1930	55.9 mm (2.2 in)
1931	66.0 mm (2.6 in)
1932	59.9 mm (2.4 in)
1933	53.8 mm (2.1 in)
1934	62.0 mm (2.4 in)
1935	105.4 mm (4.1 in)
1936	52.1 mm (2.1 in)
1937	58.4 mm (2.3 in)
1938	52.1 mm (2.1 in)
1939	48.8 mm (1.9 in)
1940	73.7 mm (2.9 in)
1941	59.2 mm (2.3 in)
1942	49.5 mm (1.9 in)
1943	67.6 mm (2.7 in)
1944	73.7 mm (2.9 in)
1945	86.9 mm (3.4 in)
1946	53.3 mm (2.1 in)
1947	67.3 mm (2.6 in)
1948	58.4 mm (2.3 in)
1949	48.3 mm (1.9 in)
1950	63.8 mm (2.5 in)
1951	63.5 mm (2.5 in)
1952	39.9 mm (1.6 in)
1953	53.3 mm (2.1 in)
1954	67.1 mm (2.6 in)
1955	89.7 mm (3.5 in)
1956	113.0 mm (4.4 in)
1957	39.4 mm (1.6 in)
1958	65.5 mm (2.6 in)
1959	73.4 mm (2.9 in)
1960	58.9 mm (2.3 in)
1961	58.2 mm (2.3 in)
1962	79.0 mm (3.1 in)
1963	77.2 mm (3.0 in)
1964	54.4 mm (2.1 in)
1965	49.5 mm (1.9 in)
1966	56.4 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at New Westminster, 1874 to 1966. The record is 367.5 mm (14.5 in) in 1935, marked on the chart; the median year is 119.9 mm (4.7 in).

Wettest five days (Rx5day) at New Westminster by year
Year	Wettest five days (Rx5day)
1874	65.8 mm (2.6 in)
1875	140.2 mm (5.5 in)
1876	99.6 mm (3.9 in)
1877	101.9 mm (4.0 in)
1878	107.6 mm (4.2 in)
1879	131.8 mm (5.2 in)
1880	197.2 mm (7.8 in)
1881	135.7 mm (5.3 in)
1882	63.6 mm (2.5 in)
1894	115.9 mm (4.6 in)
1895	124.7 mm (4.9 in)
1896	194.8 mm (7.7 in)
1897	114.7 mm (4.5 in)
1898	97.8 mm (3.9 in)
1899	147.1 mm (5.8 in)
1900	205.0 mm (8.1 in)
1901	117.4 mm (4.6 in)
1902	102.8 mm (4.0 in)
1903	139.0 mm (5.5 in)
1904	92.8 mm (3.7 in)
1905	101.1 mm (4.0 in)
1906	173.3 mm (6.8 in)
1907	112.0 mm (4.4 in)
1908	122.4 mm (4.8 in)
1909	179.6 mm (7.1 in)
1910	123.6 mm (4.9 in)
1911	91.9 mm (3.6 in)
1912	93.0 mm (3.7 in)
1913	120.3 mm (4.7 in)
1914	120.9 mm (4.8 in)
1915	101.1 mm (4.0 in)
1916	210.8 mm (8.3 in)
1917	140.2 mm (5.5 in)
1918	196.3 mm (7.7 in)
1919	148.4 mm (5.8 in)
1920	150.7 mm (5.9 in)
1921	138.5 mm (5.5 in)
1922	77.9 mm (3.1 in)
1923	102.0 mm (4.0 in)
1924	104.7 mm (4.1 in)
1925	103.3 mm (4.1 in)
1926	73.7 mm (2.9 in)
1927	73.3 mm (2.9 in)
1929	92.0 mm (3.6 in)
1930	111.3 mm (4.4 in)
1931	138.3 mm (5.4 in)
1932	132.9 mm (5.2 in)
1933	105.9 mm (4.2 in)
1934	94.3 mm (3.7 in)
1935	367.5 mm (14.5 in)
1936	83.6 mm (3.3 in)
1937	110.2 mm (4.3 in)
1938	145.7 mm (5.7 in)
1939	158.0 mm (6.2 in)
1940	129.5 mm (5.1 in)
1941	119.9 mm (4.7 in)
1942	108.2 mm (4.3 in)
1943	98.2 mm (3.9 in)
1944	107.8 mm (4.2 in)
1945	136.4 mm (5.4 in)
1946	106.7 mm (4.2 in)
1947	126.8 mm (5.0 in)
1948	136.6 mm (5.4 in)
1949	115.8 mm (4.6 in)
1950	123.6 mm (4.9 in)
1951	177.9 mm (7.0 in)
1952	65.6 mm (2.6 in)
1953	89.4 mm (3.5 in)
1954	154.3 mm (6.1 in)
1955	127.3 mm (5.0 in)
1956	165.9 mm (6.5 in)
1957	75.3 mm (3.0 in)
1958	124.2 mm (4.9 in)
1959	138.7 mm (5.5 in)
1960	103.9 mm (4.1 in)
1961	137.3 mm (5.4 in)
1962	132.1 mm (5.2 in)
1963	156.2 mm (6.1 in)
1964	117.9 mm (4.6 in)
1965	116.0 mm (4.6 in)
1966	103.4 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at New Westminster, 1874 to 1966. The record is 62 days in 1951, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at New Westminster by year
Year	Longest dry spell (CDD)
1874	20 days
1875	32 days
1876	15 days
1877	19 days
1878	23 days
1879	35 days
1880	20 days
1881	14 days
1882	6 days
1894	25 days
1895	16 days
1896	53 days
1897	18 days
1898	28 days
1899	24 days
1900	14 days
1901	34 days
1902	15 days
1903	13 days
1904	31 days
1905	16 days
1906	33 days
1907	22 days
1908	20 days
1909	20 days
1910	51 days
1911	30 days
1912	21 days
1913	29 days
1914	29 days
1915	33 days
1916	20 days
1917	22 days
1918	38 days
1919	29 days
1920	35 days
1921	18 days
1922	47 days
1923	29 days
1924	21 days
1925	21 days
1926	19 days
1927	30 days
1929	20 days
1930	29 days
1931	36 days
1932	16 days
1933	14 days
1934	31 days
1935	24 days
1936	49 days
1937	36 days
1938	34 days
1939	40 days
1940	33 days
1941	23 days
1942	39 days
1943	22 days
1944	20 days
1945	44 days
1946	25 days
1947	21 days
1948	13 days
1949	20 days
1950	27 days
1951	62 days
1952	28 days
1953	18 days
1954	15 days
1955	23 days
1956	26 days
1957	17 days
1958	34 days
1959	28 days
1960	42 days
1961	19 days
1962	21 days
1963	20 days
1964	12 days
1965	22 days
1966	9 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 New Westminster falls on 3 April and the median first autumn frost on 5 November, which leaves a median of 213 days between them.

In 1934 to 1965 the median growing season was 227 days. That is 22 days more than in 1875 to 1920.

Fitted over all years, the growing season changes by +3.6 days per decade at this station.

Frost dates and growing season at New Westminster
Measure	Median, all years	Earliest period (1875 to 1920)	Recent period (1934 to 1965)	Recent against earliest	Fitted trend
Last spring frost	3 April	10 April	30 March	11 days earlier	-2.3 days per decade
First autumn frost	5 November	1 November	8 November	7 days later	+1.3 days per decade
Growing days	213 days	205 days	227 days	22 days more	+3.6 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, 1875 to 1965

A day with at least 61.0 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 126.8 mm (5.0 in) of rain is expected about once in 100 years.

Rainfall return levels at New Westminster: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	61.0 mm (2.4 in)
5 years	77.9 mm (3.1 in)
10 years	89.4 mm (3.5 in)
25 years	104.3 mm (4.1 in)
50 years	115.5 mm (4.5 in)
100 years	126.8 mm (5.0 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 1875 to 1965.

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: 132.3 mm (5.2 in) in 1896; 113.0 mm (4.4 in) in 1956; 110.5 mm (4.4 in) in 1909.

Station Changes

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

Download the Data

Data for New Westminster standing records by year: CSV or JSON. Field meanings are on the data page.
Data for New Westminster 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).