Saanich Dom Astro Obs Weather Records (CA0010169DK)

Record envelope, standing records and threshold days for Saanich Dom Astro Obs (CA0010169DK), British Columbia, Canada, with 62 years of record.

Key Facts for Saanich Dom Astro Obs

Saanich Dom Astro Obs (CA0010169DK) is a weather station in British Columbia, Canada at 48.52 latitude and -123.42 longitude, 223 m (732 ft) above sea level.
The station reports from 1916 to 1977, 62 years of record.
1,464 records set at Saanich Dom Astro Obs still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Saanich Dom Astro Obs set a daily record low minimum temperature of 6.1 C (43.0 F) on 27 June 1977.

About the Station

Location: British Columbia, Canada, 48.52 latitude, -123.42 longitude.
Elevation: 223 m (732 ft).
Period of record: 1916 to 1977, 62 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 Saanich Dom Astro Obs. 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 Saanich Dom Astro Obs, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.9 C (57.0 F)	-14.4 C (6.1 F)	n/a	n/a
Feb	17.8 C (64.0 F)	-13.3 C (8.1 F)	n/a	n/a
Mar	20.0 C (68.0 F)	-9.4 C (15.1 F)	n/a	n/a
Apr	26.1 C (79.0 F)	-3.3 C (26.1 F)	n/a	n/a
May	30.0 C (86.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jun	36.1 C (97.0 F)	3.3 C (37.9 F)	n/a	n/a
Jul	38.3 C (100.9 F)	6.1 C (43.0 F)	n/a	n/a
Aug	35.6 C (96.1 F)	6.7 C (44.1 F)	n/a	n/a
Sep	33.3 C (91.9 F)	2.8 C (37.0 F)	n/a	n/a
Oct	26.7 C (80.1 F)	-3.9 C (25.0 F)	n/a	n/a
Nov	18.9 C (66.0 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	14.4 C (57.9 F)	-16.1 C (3.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Saanich Dom Astro Obs still stand. 1917 holds the most, with 65.

Standing records at Saanich Dom Astro Obs by the year they were set
Year set	Standing records
1917	65
1918	28
1919	33
1920	23
1921	24
1922	40
1923	19
1924	34
1925	17
1926	39
1927	10
1928	21
1929	18
1930	16
1931	14
1932	21
1933	20
1934	54
1935	38
1936	23
1937	17
1938	16
1939	28
1940	20
1941	34
1942	23
1943	26
1944	29
1945	20
1946	12
1947	19
1948	13
1949	32
1950	37
1951	19
1952	37
1953	15
1954	19
1955	56
1956	30
1957	19
1958	34
1959	16
1960	17
1961	19
1962	19
1963	25
1964	16
1965	25
1966	17
1967	10
1968	24
1969	17
1970	19
1971	17
1972	31
1973	23
1974	17
1975	13
1976	14
1977	13

All-Time Record Progression

5 new records

5 all-time records were set at Saanich Dom Astro Obs between 14 January 1950 and 29 December 1968. Each dot is a new record.

When Saanich Dom Astro Obs set new all-time records
Date	Kind	Detail
1950-01-14	Record low maximum temperature	Record low maximum temperature -12.2 C (10.0 F)
1950-01-14	Record low minimum temperature	Record low minimum temperature -14.4 C (6.1 F)
1955-11-02	Record daily precipitation	Record daily precipitation 108.2 mm (4.3 in)
1968-12-28	Record low minimum temperature	Record low minimum temperature -15.0 C (5.0 F)
1968-12-29	Record low minimum temperature	Record low minimum temperature -16.1 C (3.0 F)

Wettest Day of Each Month

Nov: 108.2 mm (4.3 in)

The wettest day on record for each calendar month at Saanich Dom Astro Obs. The most was 108.2 mm (4.3 in) on 2 November 1955.

Record daily precipitation for each month at Saanich Dom Astro Obs
Month	Record daily precipitation (mm)	Date
Jan	79.0 mm (3.1 in)	21 January 1935
Feb	60.2 mm (2.4 in)	11 February 1924
Mar	48.5 mm (1.9 in)	26 March 1968
Apr	37.8 mm (1.5 in)	8 April 1970
May	49.5 mm (1.9 in)	28 May 1948
Jun	35.8 mm (1.4 in)	15 June 1931
Jul	23.6 mm (0.9 in)	28 July 1950
Aug	64.3 mm (2.5 in)	22 August 1975
Sep	36.3 mm (1.4 in)	11 September 1920
Oct	51.6 mm (2.0 in)	3 October 1927
Nov	108.2 mm (4.3 in)	2 November 1955
Dec	70.9 mm (2.8 in)	25 December 1972

Period of Record Coverage

1916 to 1977

62 years of record at Saanich Dom Astro Obs, 1916 to 1977. 2 years have data for under 90 percent of days and are left out of rankings: 1916, 1977.

Days with data per year at Saanich Dom Astro Obs
Year	Days with data	Share of year	Complete
1916	29	8%	No
1917	364	100%	Yes
1918	355	97%	Yes
1919	365	100%	Yes
1920	358	98%	Yes
1921	360	99%	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	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	364	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	364	99%	Yes
1945	365	100%	Yes
1946	363	99%	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	362	99%	Yes
1956	366	100%	Yes
1957	361	99%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	340	93%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	364	99%	Yes
1977	181	50%	No

Latest Records

Latest records at Saanich Dom Astro Obs
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 June 1977	Saanich Dom Astro Obs, CA	daily low min	6.1 C (43.0 F)	1.1 C (2.0 F)	58 years	27 of 100 (Routine)
25 June 1977	Saanich Dom Astro Obs, CA	daily low min	4.4 C (39.9 F)	2.3 C (4.1 F)	0 years	14 of 100 (Routine)
6 June 1977	Saanich Dom Astro Obs, CA	daily high max (Tie)	30.0 C (86.0 F)	tie	42 years	4 of 100 (Routine)
3 June 1977	Saanich Dom Astro Obs, CA	daily low min (Tie)	4.4 C (39.9 F)	tie	60 years	6 of 100 (Routine)
31 May 1977	Saanich Dom Astro Obs, CA	daily rain	5.3 mm (0.21 in)	0.7 mm (0.03 in)	8 years	9 of 100 (Routine)
31 May 1977	Saanich Dom Astro Obs, CA	daily low min (Tie)	5.0 C (41.0 F)	tie	22 years	3 of 100 (Routine)
27 May 1977	Saanich Dom Astro Obs, CA	daily low max (Tie)	12.8 C (55.0 F)	tie	22 years	3 of 100 (Routine)
16 May 1977	Saanich Dom Astro Obs, CA	daily low max	10.6 C (51.1 F)	0.5 C (0.9 F)	18 years	12 of 100 (Routine)
24 April 1977	Saanich Dom Astro Obs, CA	daily high max	21.1 C (70.0 F)	1.1 C (2.0 F)	46 years	22 of 100 (Routine)
24 April 1977	Saanich Dom Astro Obs, CA	daily high min	12.2 C (54.0 F)	0.5 C (0.9 F)	43 years	19 of 100 (Routine)
7 April 1977	Saanich Dom Astro Obs, CA	daily rain	8.6 mm (0.34 in)	3.3 mm (0.13 in)	55 years	20 of 100 (Routine)
7 April 1977	Saanich Dom Astro Obs, CA	daily high max	20.6 C (69.1 F)	1.2 C (2.2 F)	16 years	14 of 100 (Routine)
27 March 1977	Saanich Dom Astro Obs, CA	daily low min (Tie)	-0.6 C (30.9 F)	tie	60 years	6 of 100 (Routine)
13 March 1977	Saanich Dom Astro Obs, CA	daily snowfall	3.8 cm (1.5 in)	1.3 cm (0.5 in)	22 years	14 of 100 (Routine)
8 March 1977	Saanich Dom Astro Obs, CA	daily rain	17.5 mm (0.7 in)	4.5 mm (0.18 in)	23 years	19 of 100 (Routine)
7 March 1977	Saanich Dom Astro Obs, CA	daily rain	19.3 mm (0.8 in)	8.1 mm (0.32 in)	30 years	20 of 100 (Routine)
2 March 1977	Saanich Dom Astro Obs, CA	daily rain	17.3 mm (0.7 in)	2.3 mm (0.09 in)	20 years	15 of 100 (Routine)
20 February 1977	Saanich Dom Astro Obs, CA	daily high min	8.3 C (46.9 F)	0.5 C (0.9 F)	43 years	19 of 100 (Routine)
19 February 1977	Saanich Dom Astro Obs, CA	daily high max	14.4 C (57.9 F)	1.6 C (2.9 F)	19 years	16 of 100 (Routine)
16 February 1977	Saanich Dom Astro Obs, CA	daily high max	13.9 C (57.0 F)	1.1 C (2.0 F)	36 years	19 of 100 (Routine)

Climate Trend

59 complete years, 1917 to 1976

One stripe for each of 59 complete years at Saanich Dom Astro Obs, 1917 to 1976. Blue stripes are years cooler than the station's own mean of 10.2 C (50.4 F); red stripes are warmer. The coolest year was 1955, at 8.0 C (46.3 F), and the warmest was 1934, at 12.2 C (54.0 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Saanich Dom Astro Obs as warming stripes, 1917 to 1976
Year	Annual mean temperature	Difference from the station mean
1917	8.7 C	-1.51 C
1918	10.5 C	+0.27 C
1919	9.5 C	-0.76 C
1920	10.1 C	-0.12 C
1921	9.3 C	-0.98 C
1922	9.0 C	-1.22 C
1923	10.5 C	+0.21 C
1924	11.0 C	+0.71 C
1925	11.8 C	+1.60 C
1926	12.1 C	+1.83 C
1927	10.2 C	-0.02 C
1928	11.2 C	+0.98 C
1929	10.6 C	+0.31 C
1930	9.9 C	-0.30 C
1931	10.9 C	+0.66 C
1932	10.0 C	-0.21 C
1933	10.0 C	-0.20 C
1934	12.2 C	+1.96 C
1935	10.4 C	+0.13 C
1936	10.6 C	+0.33 C
1937	10.4 C	+0.16 C
1938	11.4 C	+1.16 C
1939	11.1 C	+0.88 C
1940	11.3 C	+1.01 C
1941	11.5 C	+1.22 C
1942	10.7 C	+0.44 C
1943	10.3 C	+0.02 C
1944	10.8 C	+0.58 C
1945	10.4 C	+0.11 C
1946	10.1 C	-0.15 C
1947	10.7 C	+0.44 C
1948	9.4 C	-0.81 C
1949	10.0 C	-0.24 C
1950	9.4 C	-0.89 C
1951	9.9 C	-0.39 C
1952	9.8 C	-0.47 C
1953	10.1 C	-0.12 C
1954	9.2 C	-1.06 C
1955	8.0 C	-2.28 C
1956	9.5 C	-0.71 C
1957	9.9 C	-0.34 C
1958	11.4 C	+1.17 C
1959	9.6 C	-0.67 C
1960	9.9 C	-0.33 C
1961	10.4 C	+0.12 C
1962	10.2 C	-0.05 C
1963	10.5 C	+0.30 C
1964	9.5 C	-0.75 C
1965	10.4 C	+0.14 C
1966	10.2 C	+0.00 C
1967	11.0 C	+0.73 C
1969	10.1 C	-0.15 C
1970	10.0 C	-0.22 C
1971	9.7 C	-0.50 C
1972	9.5 C	-0.77 C
1973	9.9 C	-0.35 C
1974	10.4 C	+0.16 C
1975	9.6 C	-0.69 C
1976	9.8 C	-0.41 C

The fitted trend in annual mean temperature here over 1917 to 1976 is -0.10 C (-0.22 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.18 F (-0.40 to 0.03) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Saanich Dom Astro Obs
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.10 C (-0.22 to 0.02) per decade	-0.18 F (-0.40 to 0.03) per decade	1917 to 1976	59	Not clearly different from zero
Mean daily maximum	-0.03 C (-0.15 to 0.09) per decade	-0.1 F (-0.3 to 0.2) per decade	1917 to 1976	59	Not clearly different from zero
Mean daily minimum	-0.18 C (-0.31 to -0.04) per decade	-0.3 F (-0.6 to -0.1) per decade	1917 to 1976	59	Fall

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

1916 to 1977

Yearly extremes at Saanich Dom Astro Obs: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.3 C (100.9 F)	1941	31.1 C (88.0 F)	62
Coldest night (TNn)	-16.1 C (3.0 F)	1968	-7.8 C (18.0 F)	62
Wettest day (Rx1day)	108.2 mm (4.3 in)	1955	43.1 mm (1.7 in)	62
Wettest five days (Rx5day)	243.8 mm (9.6 in)	1935	80.8 mm (3.2 in)	62
Longest dry spell (CDD)	97 days	1922	35 days	62

Hottest day (TXx)

The hottest day of the year at Saanich Dom Astro Obs, 1916 to 1977. The record is 38.3 C (100.9 F) in 1941, marked on the chart; the median year is 31.1 C (88.0 F).

Hottest day (TXx) at Saanich Dom Astro Obs by year
Year	Hottest day (TXx)
1916	7.8 C (46.0 F)
1917	28.9 C (84.0 F)
1918	29.4 C (84.9 F)
1919	28.3 C (82.9 F)
1920	31.7 C (89.1 F)
1921	27.8 C (82.0 F)
1922	31.7 C (89.1 F)
1923	31.7 C (89.1 F)
1924	33.3 C (91.9 F)
1925	36.1 C (97.0 F)
1926	32.2 C (90.0 F)
1927	32.8 C (91.0 F)
1928	32.2 C (90.0 F)
1929	30.6 C (87.1 F)
1930	28.9 C (84.0 F)
1931	31.1 C (88.0 F)
1932	31.7 C (89.1 F)
1933	34.4 C (93.9 F)
1934	31.1 C (88.0 F)
1935	33.3 C (91.9 F)
1936	29.4 C (84.9 F)
1937	33.3 C (91.9 F)
1938	32.2 C (90.0 F)
1939	31.7 C (89.1 F)
1940	31.7 C (89.1 F)
1941	38.3 C (100.9 F)
1942	34.4 C (93.9 F)
1943	28.9 C (84.0 F)
1944	33.9 C (93.0 F)
1945	30.0 C (86.0 F)
1946	31.1 C (88.0 F)
1947	30.0 C (86.0 F)
1948	28.3 C (82.9 F)
1949	28.9 C (84.0 F)
1950	30.0 C (86.0 F)
1951	31.1 C (88.0 F)
1952	32.8 C (91.0 F)
1953	30.6 C (87.1 F)
1954	25.0 C (77.0 F)
1955	30.6 C (87.1 F)
1956	33.3 C (91.9 F)
1957	28.9 C (84.0 F)
1958	35.6 C (96.1 F)
1959	31.1 C (88.0 F)
1960	35.6 C (96.1 F)
1961	36.7 C (98.1 F)
1962	31.1 C (88.0 F)
1963	30.6 C (87.1 F)
1964	28.9 C (84.0 F)
1965	35.6 C (96.1 F)
1966	29.4 C (84.9 F)
1967	32.2 C (90.0 F)
1968	30.6 C (87.1 F)
1969	30.6 C (87.1 F)
1970	31.7 C (89.1 F)
1971	32.8 C (91.0 F)
1972	31.1 C (88.0 F)
1973	30.6 C (87.1 F)
1974	32.8 C (91.0 F)
1975	31.7 C (89.1 F)
1976	27.8 C (82.0 F)
1977	30.0 C (86.0 F)

Coldest night (TNn)

The coldest night of the year at Saanich Dom Astro Obs, 1916 to 1977. The record is -16.1 C (3.0 F) in 1968, marked on the chart; the median year is -7.8 C (18.0 F).

Coldest night (TNn) at Saanich Dom Astro Obs by year
Year	Coldest night (TNn)
1916	-3.9 C (25.0 F)
1917	-13.3 C (8.1 F)
1918	-5.6 C (21.9 F)
1919	-11.7 C (10.9 F)
1920	-4.4 C (24.1 F)
1921	-8.3 C (17.1 F)
1922	-8.9 C (16.0 F)
1923	-13.3 C (8.1 F)
1924	-11.7 C (10.9 F)
1925	-2.2 C (28.0 F)
1926	-8.3 C (17.1 F)
1927	-7.8 C (18.0 F)
1928	-6.7 C (19.9 F)
1929	-11.7 C (10.9 F)
1930	-11.7 C (10.9 F)
1931	-3.3 C (26.1 F)
1932	-8.9 C (16.0 F)
1933	-8.3 C (17.1 F)
1934	-1.7 C (28.9 F)
1935	-13.3 C (8.1 F)
1936	-13.3 C (8.1 F)
1937	-7.2 C (19.0 F)
1938	-2.8 C (27.0 F)
1939	-5.6 C (21.9 F)
1940	-3.9 C (25.0 F)
1941	-4.4 C (24.1 F)
1942	-3.9 C (25.0 F)
1943	-13.3 C (8.1 F)
1944	-3.3 C (26.1 F)
1945	-5.0 C (23.0 F)
1946	-5.0 C (23.0 F)
1947	-10.0 C (14.0 F)
1948	-6.1 C (21.0 F)
1949	-7.8 C (18.0 F)
1950	-14.4 C (6.1 F)
1951	-9.4 C (15.1 F)
1952	-6.7 C (19.9 F)
1953	-1.1 C (30.0 F)
1954	-10.0 C (14.0 F)
1955	-10.0 C (14.0 F)
1956	-12.8 C (9.0 F)
1957	-10.6 C (12.9 F)
1958	-3.3 C (26.1 F)
1959	-10.6 C (12.9 F)
1960	-5.6 C (21.9 F)
1961	-5.0 C (23.0 F)
1962	-8.3 C (17.1 F)
1963	-10.0 C (14.0 F)
1964	-13.3 C (8.1 F)
1965	-2.8 C (27.0 F)
1966	-3.3 C (26.1 F)
1967	-3.9 C (25.0 F)
1968	-16.1 C (3.0 F)
1969	-12.2 C (10.0 F)
1970	-4.4 C (24.1 F)
1971	-7.8 C (18.0 F)
1972	-9.4 C (15.1 F)
1973	-10.6 C (12.9 F)
1974	-5.0 C (23.0 F)
1975	-6.7 C (19.9 F)
1976	-9.4 C (15.1 F)
1977	-2.8 C (27.0 F)

Wettest day (Rx1day)

The wettest day of the year at Saanich Dom Astro Obs, 1916 to 1977. The record is 108.2 mm (4.3 in) in 1955, marked on the chart; the median year is 43.1 mm (1.7 in).

Wettest day (Rx1day) at Saanich Dom Astro Obs by year
Year	Wettest day (Rx1day)
1916	24.4 mm (1.0 in)
1917	39.6 mm (1.6 in)
1918	43.4 mm (1.7 in)
1919	44.5 mm (1.8 in)
1920	36.3 mm (1.4 in)
1921	38.6 mm (1.5 in)
1922	26.2 mm (1.0 in)
1923	48.3 mm (1.9 in)
1924	60.2 mm (2.4 in)
1925	23.4 mm (0.9 in)
1926	30.2 mm (1.2 in)
1927	51.6 mm (2.0 in)
1928	37.8 mm (1.5 in)
1929	49.5 mm (1.9 in)
1930	29.0 mm (1.1 in)
1931	35.8 mm (1.4 in)
1932	50.3 mm (2.0 in)
1933	45.0 mm (1.8 in)
1934	27.7 mm (1.1 in)
1935	79.0 mm (3.1 in)
1936	41.4 mm (1.6 in)
1937	48.3 mm (1.9 in)
1938	69.3 mm (2.7 in)
1939	49.0 mm (1.9 in)
1940	25.1 mm (1.0 in)
1941	29.7 mm (1.2 in)
1942	30.5 mm (1.2 in)
1943	46.5 mm (1.8 in)
1944	32.8 mm (1.3 in)
1945	48.3 mm (1.9 in)
1946	52.3 mm (2.1 in)
1947	51.1 mm (2.0 in)
1948	49.5 mm (1.9 in)
1949	58.4 mm (2.3 in)
1950	37.3 mm (1.5 in)
1951	39.4 mm (1.6 in)
1952	51.1 mm (2.0 in)
1953	36.1 mm (1.4 in)
1954	39.4 mm (1.6 in)
1955	108.2 mm (4.3 in)
1956	70.4 mm (2.8 in)
1957	35.8 mm (1.4 in)
1958	32.3 mm (1.3 in)
1959	45.2 mm (1.8 in)
1960	46.5 mm (1.8 in)
1961	55.9 mm (2.2 in)
1962	33.0 mm (1.3 in)
1963	47.5 mm (1.9 in)
1964	36.1 mm (1.4 in)
1965	41.9 mm (1.6 in)
1966	35.6 mm (1.4 in)
1967	63.0 mm (2.5 in)
1968	58.4 mm (2.3 in)
1969	41.1 mm (1.6 in)
1970	37.8 mm (1.5 in)
1971	38.6 mm (1.5 in)
1972	70.9 mm (2.8 in)
1973	46.5 mm (1.8 in)
1974	60.7 mm (2.4 in)
1975	64.3 mm (2.5 in)
1976	42.7 mm (1.7 in)
1977	21.1 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Saanich Dom Astro Obs, 1916 to 1977. The record is 243.8 mm (9.6 in) in 1935, marked on the chart; the median year is 80.8 mm (3.2 in).

Wettest five days (Rx5day) at Saanich Dom Astro Obs by year
Year	Wettest five days (Rx5day)
1916	45.7 mm (1.8 in)
1917	112.3 mm (4.4 in)
1918	101.0 mm (4.0 in)
1919	86.7 mm (3.4 in)
1920	61.9 mm (2.4 in)
1921	92.0 mm (3.6 in)
1922	77.7 mm (3.1 in)
1923	71.4 mm (2.8 in)
1924	81.3 mm (3.2 in)
1925	49.4 mm (1.9 in)
1926	66.7 mm (2.6 in)
1927	67.8 mm (2.7 in)
1928	56.0 mm (2.2 in)
1929	70.4 mm (2.8 in)
1930	64.1 mm (2.5 in)
1931	77.8 mm (3.1 in)
1932	75.9 mm (3.0 in)
1933	122.5 mm (4.8 in)
1934	44.6 mm (1.8 in)
1935	243.8 mm (9.6 in)
1936	80.3 mm (3.2 in)
1937	100.8 mm (4.0 in)
1938	95.4 mm (3.8 in)
1939	96.2 mm (3.8 in)
1940	49.0 mm (1.9 in)
1941	72.6 mm (2.9 in)
1942	52.8 mm (2.1 in)
1943	89.6 mm (3.5 in)
1944	55.1 mm (2.2 in)
1945	84.3 mm (3.3 in)
1946	69.6 mm (2.7 in)
1947	97.8 mm (3.9 in)
1948	113.5 mm (4.5 in)
1949	131.0 mm (5.2 in)
1950	65.6 mm (2.6 in)
1951	116.3 mm (4.6 in)
1952	69.3 mm (2.7 in)
1953	90.0 mm (3.5 in)
1954	131.4 mm (5.2 in)
1955	136.1 mm (5.4 in)
1956	139.0 mm (5.5 in)
1957	78.4 mm (3.1 in)
1958	74.4 mm (2.9 in)
1959	109.0 mm (4.3 in)
1960	70.1 mm (2.8 in)
1961	93.3 mm (3.7 in)
1962	84.4 mm (3.3 in)
1963	96.7 mm (3.8 in)
1964	59.7 mm (2.4 in)
1965	64.8 mm (2.6 in)
1966	79.5 mm (3.1 in)
1967	105.3 mm (4.1 in)
1968	109.2 mm (4.3 in)
1969	93.5 mm (3.7 in)
1970	68.2 mm (2.7 in)
1971	69.6 mm (2.7 in)
1972	167.6 mm (6.6 in)
1973	71.1 mm (2.8 in)
1974	134.9 mm (5.3 in)
1975	124.5 mm (4.9 in)
1976	92.9 mm (3.7 in)
1977	66.3 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Saanich Dom Astro Obs, 1916 to 1977. The record is 97 days in 1922, marked on the chart; the median year is 35 days.

Longest dry spell (CDD) at Saanich Dom Astro Obs by year
Year	Longest dry spell (CDD)
1916	4 days
1917	46 days
1918	44 days
1919	33 days
1920	43 days
1921	35 days
1922	97 days
1923	42 days
1924	65 days
1925	36 days
1926	63 days
1927	28 days
1928	39 days
1929	29 days
1930	60 days
1931	44 days
1932	27 days
1933	22 days
1934	31 days
1935	26 days
1936	49 days
1937	42 days
1938	51 days
1939	36 days
1940	33 days
1941	24 days
1942	76 days
1943	24 days
1944	25 days
1945	41 days
1946	46 days
1947	16 days
1948	14 days
1949	19 days
1950	27 days
1951	51 days
1952	40 days
1953	35 days
1954	34 days
1955	42 days
1956	39 days
1957	19 days
1958	36 days
1959	56 days
1960	55 days
1961	38 days
1962	28 days
1963	26 days
1964	21 days
1965	29 days
1966	27 days
1967	42 days
1968	24 days
1969	27 days
1970	34 days
1971	41 days
1972	32 days
1973	40 days
1974	36 days
1975	29 days
1976	20 days
1977	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

55 years with a frost

Across 55 years with a frost, the median last spring frost at Saanich Dom Astro Obs falls on 20 March and the median first autumn frost on 21 November, which leaves a median of 248 days between them.

Fitted over all years, the growing season changes by -3.2 days per decade at this station.

Frost dates and growing season at Saanich Dom Astro Obs
Measure	Median, all years	Earliest period	Recent period (1946 to 1976)	Recent against earliest	Fitted trend
Last spring frost	20 March	n/a	26 March	n/a	+3.2 days per decade
First autumn frost	21 November	n/a	22 November	n/a	+0.1 days per decade
Growing days	248 days	n/a	234 days	n/a	-3.2 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

60 years, 1917 to 1976

A day with at least 43.0 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 93.8 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Saanich Dom Astro Obs: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	43.0 mm (1.7 in)
5 years	55.6 mm (2.2 in)
10 years	64.4 mm (2.5 in)
25 years	75.9 mm (3.0 in)
50 years	84.7 mm (3.3 in)
100 years	93.8 mm (3.7 in)	Longer than the 60 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, 60 years of values from 1917 to 1976.

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: 108.2 mm (4.3 in) in 1955; 79.0 mm (3.1 in) in 1935; 70.9 mm (2.8 in) in 1972.

Station Changes

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

Download the Data

Data for Saanich Dom Astro Obs standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Saanich Dom Astro Obs 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).