Record envelope, standing records and threshold days for Chilliwack (CA001101530), British Columbia, Canada, with 136 years of record.
Key Facts for Chilliwack
Chilliwack (CA001101530) is a weather station in British Columbia, Canada at 49.17 latitude and -121.92 longitude, 11 m (36 ft) above sea level.
The station reports from 1879 to 2014, 136 years of record.
1,464 records set at Chilliwack still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Chilliwack set a daily record precipitation of 38.6 mm (1.5 in) on 6 October 1981.
About the Station
Location: British Columbia, Canada, 49.17 latitude, -121.92 longitude.
Elevation: 11 m (36 ft).
Period of record: 1879 to 2014, 136 years.
Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Chilliwack. 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 Chilliwack, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-20.6 C (-5.1 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-16.7 C (1.9 F)
n/a
n/a
Mar
23.9 C (75.0 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-6.1 C (21.0 F)
n/a
n/a
May
34.4 C (93.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jun
36.7 C (98.1 F)
1.1 C (34.0 F)
n/a
n/a
Jul
37.8 C (100.0 F)
3.3 C (37.9 F)
n/a
n/a
Aug
36.1 C (97.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-14.4 C (6.1 F)
n/a
n/a
Dec
19.0 C (66.2 F)
-21.7 C (-7.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chilliwack still stand. 1896 holds the most, with 48.
Standing records at Chilliwack by the year they were set
Year set
Standing records
1881
28
1896
48
1897
23
1898
17
1899
22
1900
11
1901
13
1902
18
1903
24
1904
17
1905
32
1906
23
1907
11
1908
2
1910
17
1911
44
1912
25
1913
25
1914
29
1915
15
1916
29
1917
40
1918
21
1919
31
1920
23
1921
20
1922
27
1923
19
1924
31
1925
15
1926
25
1927
16
1928
7
1929
10
1930
18
1931
17
1932
21
1933
13
1934
31
1935
5
1949
11
1951
33
1952
22
1953
15
1954
29
1955
35
1956
20
1957
11
1958
25
1959
15
1960
19
1961
16
1962
23
1963
24
1964
18
1965
23
1966
16
1967
10
1968
23
1969
19
1970
16
1971
17
1972
11
1973
8
1974
15
1975
15
1976
17
1977
15
1978
12
1979
12
1980
32
1981
24
All-Time Record Progression
5 new records
5 all-time records were set at Chilliwack between 26 February 1932 and 13 December 1979. Each dot is a new record.
When Chilliwack set new all-time records
Date
Kind
Detail
1932-02-26
Record daily precipitation
Record daily precipitation 122.2 mm (4.8 in)
1958-07-27
Record high maximum temperature
Record high maximum temperature 37.8 C (100.0 F)
1965-08-18
Record high minimum temperature
Record high minimum temperature 21.7 C (71.1 F)
1968-12-29
Record low minimum temperature
Record low minimum temperature -21.7 C (-7.1 F)
1979-12-13
Record daily precipitation
Record daily precipitation 122.6 mm (4.8 in)
Wettest Day of Each Month
Dec: 122.6 mm (4.8 in)
The wettest day on record for each calendar month at Chilliwack. The most was 122.6 mm (4.8 in) on 13 December 1979.
Record daily precipitation for each month at Chilliwack
Month
Record daily precipitation (mm)
Date
Jan
119.6 mm (4.7 in)
4 January 1914
Feb
122.2 mm (4.8 in)
26 February 1932
Mar
113.8 mm (4.5 in)
31 March 1959
Apr
86.6 mm (3.4 in)
29 April 1959
May
83.8 mm (3.3 in)
1 May 1956
Jun
70.1 mm (2.8 in)
1 June 1968
Jul
50.3 mm (2.0 in)
1 July 1897
Aug
43.9 mm (1.7 in)
10 August 1957
Sep
85.6 mm (3.4 in)
23 September 1903
Oct
118.9 mm (4.7 in)
24 October 1945
Nov
115.8 mm (4.6 in)
2 November 1955
Dec
122.6 mm (4.8 in)
13 December 1979
Period of Record Coverage
1881 to 1981
Complete yearUnder 90 percent of days
72 years of record at Chilliwack, 1881 to 1981. 10 years have data for under 90 percent of days and are left out of rankings: 1881, 1899, 1900, 1901, 1904, 1907, 1908, 1910 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 60 complete years at Chilliwack, 1896 to 1980. Blue stripes are years cooler than the station's own mean of 9.9 C (49.8 F); red stripes are warmer. The coolest year was 1916, at 7.9 C (46.3 F), and the warmest was 1958, at 11.8 C (53.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Chilliwack as warming stripes, 1896 to 1980
Year
Annual mean temperature
Difference from the station mean
1896
9.1 C
-0.81 C
1897
9.6 C
-0.30 C
1898
9.9 C
+0.01 C
1902
9.6 C
-0.27 C
1903
9.6 C
-0.29 C
1905
10.2 C
+0.29 C
1906
10.6 C
+0.65 C
1911
8.5 C
-1.41 C
1912
9.6 C
-0.35 C
1913
8.7 C
-1.18 C
1914
9.8 C
-0.15 C
1915
10.4 C
+0.48 C
1916
7.9 C
-1.97 C
1917
8.9 C
-0.97 C
1918
9.9 C
+0.01 C
1919
8.9 C
-1.03 C
1920
9.4 C
-0.50 C
1921
9.2 C
-0.73 C
1922
8.7 C
-1.20 C
1923
10.0 C
+0.13 C
1924
9.7 C
-0.17 C
1925
10.6 C
+0.65 C
1926
10.9 C
+0.99 C
1927
9.2 C
-0.69 C
1928
10.1 C
+0.19 C
1929
8.9 C
-1.02 C
1930
9.4 C
-0.53 C
1931
10.4 C
+0.44 C
1933
9.3 C
-0.58 C
1934
11.2 C
+1.24 C
1951
9.6 C
-0.32 C
1952
10.0 C
+0.04 C
1953
10.4 C
+0.49 C
1954
9.7 C
-0.18 C
1955
8.4 C
-1.52 C
1956
9.7 C
-0.22 C
1957
10.0 C
+0.10 C
1958
11.8 C
+1.89 C
1959
10.0 C
+0.08 C
1960
10.1 C
+0.16 C
1961
10.6 C
+0.72 C
1962
10.3 C
+0.38 C
1963
10.7 C
+0.74 C
1964
9.6 C
-0.36 C
1965
10.5 C
+0.62 C
1966
10.3 C
+0.36 C
1967
11.4 C
+1.44 C
1968
10.5 C
+0.63 C
1969
10.2 C
+0.29 C
1970
10.4 C
+0.46 C
1971
9.9 C
+0.02 C
1972
10.0 C
+0.04 C
1973
10.3 C
+0.35 C
1974
10.6 C
+0.67 C
1975
9.6 C
-0.29 C
1976
10.2 C
+0.33 C
1977
10.3 C
+0.40 C
1978
10.4 C
+0.46 C
1979
10.5 C
+0.58 C
1980
10.3 C
+0.41 C
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1896 to 1980. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 60 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Chilliwack
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
1896 to 1980
60
Rise
Mean daily maximum
0.07 C (-0.01 to 0.14) per decade
0.12 F (-0.01 to 0.26) per decade
1896 to 1980
60
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1896 to 1980
60
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
1879 to 1981
Yearly extremes at Chilliwack: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1958
33.9 C (93.0 F)
72
Coldest night (TNn)
-21.7 C (-7.1 F)
1968
-12.3 C (9.8 F)
72
Wettest day (Rx1day)
122.6 mm (4.8 in)
1979
65.2 mm (2.6 in)
84
Wettest five days (Rx5day)
327.5 mm (12.9 in)
1951
133.3 mm (5.2 in)
84
Longest dry spell (CDD)
50 days
1915
24 days
84
Hottest day (TXx)
The hottest day of the year at Chilliwack, 1879 to 1981. The record is 37.8 C (100.0 F) in 1958, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Chilliwack by year
Year
Hottest day (TXx)
1879
n/a
1880
n/a
1881
32.2 C (90.0 F)
1896
33.9 C (93.0 F)
1897
33.9 C (93.0 F)
1898
34.4 C (93.9 F)
1899
32.2 C (90.0 F)
1900
32.2 C (90.0 F)
1901
31.1 C (88.0 F)
1902
34.4 C (93.9 F)
1903
36.7 C (98.1 F)
1904
31.7 C (89.1 F)
1905
33.9 C (93.0 F)
1906
34.4 C (93.9 F)
1907
33.9 C (93.0 F)
1908
26.1 C (79.0 F)
1910
33.9 C (93.0 F)
1911
33.9 C (93.0 F)
1912
33.3 C (91.9 F)
1913
33.3 C (91.9 F)
1914
31.7 C (89.1 F)
1915
35.0 C (95.0 F)
1916
32.8 C (91.0 F)
1917
30.6 C (87.1 F)
1918
32.2 C (90.0 F)
1919
31.1 C (88.0 F)
1920
32.8 C (91.0 F)
1921
30.6 C (87.1 F)
1922
33.9 C (93.0 F)
1923
35.0 C (95.0 F)
1924
35.6 C (96.1 F)
1925
36.1 C (97.0 F)
1926
35.6 C (96.1 F)
1927
36.1 C (97.0 F)
1928
34.4 C (93.9 F)
1929
31.1 C (88.0 F)
1930
33.9 C (93.0 F)
1931
33.9 C (93.0 F)
1932
33.3 C (91.9 F)
1933
33.3 C (91.9 F)
1934
31.7 C (89.1 F)
1935
8.9 C (48.0 F)
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
30.6 C (87.1 F)
1951
36.1 C (97.0 F)
1952
35.6 C (96.1 F)
1953
32.2 C (90.0 F)
1954
29.4 C (84.9 F)
1955
34.4 C (93.9 F)
1956
35.0 C (95.0 F)
1957
30.6 C (87.1 F)
1958
37.8 C (100.0 F)
1959
32.8 C (91.0 F)
1960
36.1 C (97.0 F)
1961
37.2 C (99.0 F)
1962
30.0 C (86.0 F)
1963
33.9 C (93.0 F)
1964
31.1 C (88.0 F)
1965
35.6 C (96.1 F)
1966
31.7 C (89.1 F)
1967
33.9 C (93.0 F)
1968
32.2 C (90.0 F)
1969
32.8 C (91.0 F)
1970
33.9 C (93.0 F)
1971
35.6 C (96.1 F)
1972
32.8 C (91.0 F)
1973
32.8 C (91.0 F)
1974
33.9 C (93.0 F)
1975
32.8 C (91.0 F)
1976
30.0 C (86.0 F)
1977
35.6 C (96.1 F)
1978
35.0 C (95.0 F)
1979
34.0 C (93.2 F)
1980
31.5 C (88.7 F)
1981
35.5 C (95.9 F)
Coldest night (TNn)
The coldest night of the year at Chilliwack, 1879 to 1981. The record is -21.7 C (-7.1 F) in 1968, marked on the chart; the median year is -12.3 C (9.8 F).
Coldest night (TNn) at Chilliwack by year
Year
Coldest night (TNn)
1879
n/a
1880
n/a
1881
-9.4 C (15.1 F)
1896
-13.3 C (8.1 F)
1897
-12.8 C (9.0 F)
1898
-12.2 C (10.0 F)
1899
-13.3 C (8.1 F)
1900
-1.1 C (30.0 F)
1901
-6.7 C (19.9 F)
1902
-12.2 C (10.0 F)
1903
-11.7 C (10.9 F)
1904
-12.8 C (9.0 F)
1905
-10.0 C (14.0 F)
1906
-7.8 C (18.0 F)
1907
-16.1 C (3.0 F)
1908
-2.8 C (27.0 F)
1910
-3.9 C (25.0 F)
1911
-20.6 C (-5.1 F)
1912
-16.7 C (1.9 F)
1913
-18.3 C (-0.9 F)
1914
-11.1 C (12.0 F)
1915
-7.8 C (18.0 F)
1916
-17.2 C (1.0 F)
1917
-17.2 C (1.0 F)
1918
-9.4 C (15.1 F)
1919
-16.7 C (1.9 F)
1920
-8.9 C (16.0 F)
1921
-12.2 C (10.0 F)
1922
-13.9 C (7.0 F)
1923
-14.4 C (6.1 F)
1924
-16.1 C (3.0 F)
1925
-9.4 C (15.1 F)
1926
-11.1 C (12.0 F)
1927
-13.3 C (8.1 F)
1928
-8.9 C (16.0 F)
1929
-15.6 C (3.9 F)
1930
-13.3 C (8.1 F)
1931
-7.2 C (19.0 F)
1932
-13.3 C (8.1 F)
1933
-12.2 C (10.0 F)
1934
-8.3 C (17.1 F)
1935
-17.2 C (1.0 F)
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
-5.0 C (23.0 F)
1951
-17.8 C (0.0 F)
1952
-16.7 C (1.9 F)
1953
-8.9 C (16.0 F)
1954
-16.1 C (3.0 F)
1955
-14.4 C (6.1 F)
1956
-16.7 C (1.9 F)
1957
-15.0 C (5.0 F)
1958
-7.2 C (19.0 F)
1959
-13.9 C (7.0 F)
1960
-6.7 C (19.9 F)
1961
-6.7 C (19.9 F)
1962
-12.2 C (10.0 F)
1963
-13.3 C (8.1 F)
1964
-19.4 C (-2.9 F)
1965
-11.1 C (12.0 F)
1966
-12.8 C (9.0 F)
1967
-8.9 C (16.0 F)
1968
-21.7 C (-7.1 F)
1969
-15.6 C (3.9 F)
1970
-8.9 C (16.0 F)
1971
-13.9 C (7.0 F)
1972
-12.8 C (9.0 F)
1973
-10.0 C (14.0 F)
1974
-8.3 C (17.1 F)
1975
-11.7 C (10.9 F)
1976
-12.2 C (10.0 F)
1977
-11.5 C (11.3 F)
1978
-14.5 C (5.9 F)
1979
-13.0 C (8.6 F)
1980
-12.5 C (9.5 F)
1981
-8.0 C (17.6 F)
Wettest day (Rx1day)
The wettest day of the year at Chilliwack, 1879 to 1981. The record is 122.6 mm (4.8 in) in 1979, marked on the chart; the median year is 65.2 mm (2.6 in).
Wettest day (Rx1day) at Chilliwack by year
Year
Wettest day (Rx1day)
1879
49.3 mm (1.9 in)
1880
69.9 mm (2.8 in)
1881
74.9 mm (2.9 in)
1896
65.3 mm (2.6 in)
1897
64.3 mm (2.5 in)
1898
52.1 mm (2.1 in)
1899
40.6 mm (1.6 in)
1900
51.3 mm (2.0 in)
1901
66.3 mm (2.6 in)
1902
58.2 mm (2.3 in)
1903
85.6 mm (3.4 in)
1904
49.3 mm (1.9 in)
1905
52.1 mm (2.1 in)
1906
74.2 mm (2.9 in)
1907
50.8 mm (2.0 in)
1908
31.8 mm (1.3 in)
1910
59.7 mm (2.4 in)
1911
49.5 mm (1.9 in)
1912
41.9 mm (1.6 in)
1913
74.7 mm (2.9 in)
1914
119.6 mm (4.7 in)
1915
44.7 mm (1.8 in)
1916
58.4 mm (2.3 in)
1917
60.2 mm (2.4 in)
1918
75.9 mm (3.0 in)
1919
66.3 mm (2.6 in)
1920
70.4 mm (2.8 in)
1921
73.9 mm (2.9 in)
1922
109.0 mm (4.3 in)
1923
66.0 mm (2.6 in)
1924
101.6 mm (4.0 in)
1925
42.7 mm (1.7 in)
1926
49.5 mm (1.9 in)
1927
44.7 mm (1.8 in)
1928
87.6 mm (3.4 in)
1929
38.9 mm (1.5 in)
1930
48.3 mm (1.9 in)
1931
58.9 mm (2.3 in)
1932
122.2 mm (4.8 in)
1933
72.4 mm (2.9 in)
1934
46.7 mm (1.8 in)
1935
88.9 mm (3.5 in)
1939
41.9 mm (1.6 in)
1940
46.5 mm (1.8 in)
1941
66.3 mm (2.6 in)
1942
40.4 mm (1.6 in)
1943
65.0 mm (2.6 in)
1944
37.6 mm (1.5 in)
1945
118.9 mm (4.7 in)
1946
58.7 mm (2.3 in)
1947
64.5 mm (2.5 in)
1948
43.7 mm (1.7 in)
1949
62.5 mm (2.5 in)
1951
115.6 mm (4.6 in)
1952
45.7 mm (1.8 in)
1953
68.1 mm (2.7 in)
1954
88.9 mm (3.5 in)
1955
115.8 mm (4.6 in)
1956
83.8 mm (3.3 in)
1957
43.9 mm (1.7 in)
1958
73.2 mm (2.9 in)
1959
113.8 mm (4.5 in)
1960
65.0 mm (2.6 in)
1961
64.5 mm (2.5 in)
1962
59.9 mm (2.4 in)
1963
56.1 mm (2.2 in)
1964
77.7 mm (3.1 in)
1965
67.1 mm (2.6 in)
1966
52.3 mm (2.1 in)
1967
40.1 mm (1.6 in)
1968
93.2 mm (3.7 in)
1969
66.0 mm (2.6 in)
1970
48.5 mm (1.9 in)
1971
97.5 mm (3.8 in)
1972
111.3 mm (4.4 in)
1973
79.5 mm (3.1 in)
1974
86.4 mm (3.4 in)
1975
102.9 mm (4.1 in)
1976
67.3 mm (2.6 in)
1977
75.2 mm (3.0 in)
1978
58.2 mm (2.3 in)
1979
122.6 mm (4.8 in)
1980
105.8 mm (4.2 in)
1981
66.4 mm (2.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chilliwack, 1879 to 1981. The record is 327.5 mm (12.9 in) in 1951, marked on the chart; the median year is 133.3 mm (5.2 in).
Wettest five days (Rx5day) at Chilliwack by year
Year
Wettest five days (Rx5day)
1879
71.6 mm (2.8 in)
1880
152.7 mm (6.0 in)
1881
143.8 mm (5.7 in)
1896
184.1 mm (7.2 in)
1897
116.6 mm (4.6 in)
1898
115.8 mm (4.6 in)
1899
97.3 mm (3.8 in)
1900
132.1 mm (5.2 in)
1901
119.2 mm (4.7 in)
1902
117.2 mm (4.6 in)
1903
150.0 mm (5.9 in)
1904
92.2 mm (3.6 in)
1905
91.9 mm (3.6 in)
1906
144.0 mm (5.7 in)
1907
158.0 mm (6.2 in)
1908
39.9 mm (1.6 in)
1910
143.0 mm (5.6 in)
1911
104.5 mm (4.1 in)
1912
96.3 mm (3.8 in)
1913
158.8 mm (6.3 in)
1914
231.3 mm (9.1 in)
1915
88.4 mm (3.5 in)
1916
143.7 mm (5.7 in)
1917
181.8 mm (7.2 in)
1918
155.4 mm (6.1 in)
1919
137.0 mm (5.4 in)
1920
162.7 mm (6.4 in)
1921
190.5 mm (7.5 in)
1922
186.5 mm (7.3 in)
1923
128.8 mm (5.1 in)
1924
210.6 mm (8.3 in)
1925
117.6 mm (4.6 in)
1926
102.0 mm (4.0 in)
1927
84.1 mm (3.3 in)
1928
148.3 mm (5.8 in)
1929
76.7 mm (3.0 in)
1930
134.3 mm (5.3 in)
1931
121.3 mm (4.8 in)
1932
216.5 mm (8.5 in)
1933
123.5 mm (4.9 in)
1934
132.4 mm (5.2 in)
1935
254.3 mm (10.0 in)
1939
105.7 mm (4.2 in)
1940
100.2 mm (3.9 in)
1941
113.7 mm (4.5 in)
1942
85.1 mm (3.4 in)
1943
110.9 mm (4.4 in)
1944
92.1 mm (3.6 in)
1945
264.4 mm (10.4 in)
1946
126.2 mm (5.0 in)
1947
150.1 mm (5.9 in)
1948
126.8 mm (5.0 in)
1949
132.6 mm (5.2 in)
1951
327.5 mm (12.9 in)
1952
79.0 mm (3.1 in)
1953
150.5 mm (5.9 in)
1954
183.2 mm (7.2 in)
1955
165.1 mm (6.5 in)
1956
157.7 mm (6.2 in)
1957
99.0 mm (3.9 in)
1958
136.9 mm (5.4 in)
1959
205.6 mm (8.1 in)
1960
113.8 mm (4.5 in)
1961
174.4 mm (6.9 in)
1962
114.0 mm (4.5 in)
1963
127.2 mm (5.0 in)
1964
129.7 mm (5.1 in)
1965
133.1 mm (5.2 in)
1966
143.8 mm (5.7 in)
1967
133.9 mm (5.3 in)
1968
174.7 mm (6.9 in)
1969
121.7 mm (4.8 in)
1970
107.7 mm (4.2 in)
1971
193.6 mm (7.6 in)
1972
231.6 mm (9.1 in)
1973
103.6 mm (4.1 in)
1974
174.0 mm (6.9 in)
1975
240.0 mm (9.4 in)
1976
133.4 mm (5.3 in)
1977
125.2 mm (4.9 in)
1978
118.6 mm (4.7 in)
1979
279.9 mm (11.0 in)
1980
164.2 mm (6.5 in)
1981
141.4 mm (5.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chilliwack, 1879 to 1981. The record is 50 days in 1915, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Chilliwack by year
Year
Longest dry spell (CDD)
1879
34 days
1880
24 days
1881
21 days
1896
33 days
1897
20 days
1898
30 days
1899
16 days
1900
13 days
1901
43 days
1902
14 days
1903
23 days
1904
30 days
1905
28 days
1906
34 days
1907
21 days
1908
11 days
1910
20 days
1911
28 days
1912
22 days
1913
14 days
1914
29 days
1915
50 days
1916
19 days
1917
22 days
1918
38 days
1919
29 days
1920
43 days
1921
28 days
1922
48 days
1923
43 days
1924
17 days
1925
27 days
1926
17 days
1927
29 days
1928
37 days
1929
22 days
1930
41 days
1931
42 days
1932
15 days
1933
15 days
1934
31 days
1935
3 days
1939
36 days
1940
37 days
1941
21 days
1942
38 days
1943
21 days
1944
25 days
1945
19 days
1946
22 days
1947
21 days
1948
12 days
1949
31 days
1951
36 days
1952
28 days
1953
20 days
1954
16 days
1955
24 days
1956
26 days
1957
18 days
1958
26 days
1959
17 days
1960
50 days
1961
39 days
1962
15 days
1963
20 days
1964
10 days
1965
21 days
1966
17 days
1967
16 days
1968
24 days
1969
24 days
1970
24 days
1971
41 days
1972
28 days
1973
24 days
1974
36 days
1975
17 days
1976
16 days
1977
23 days
1978
14 days
1979
32 days
1980
14 days
1981
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
60 years with a frost
Across 60 years with a frost, the median last spring frost at Chilliwack falls on 13 April and the median first autumn frost on 1 November, which leaves a median of 203 days between them.
In 1951 to 1980 the median growing season was 216 days. That is 30 days more than in 1896 to 1934.
Fitted over all years, the growing season changes by +6.2 days per decade at this station.
Frost dates and growing season at Chilliwack
Measure
Median, all years
Earliest period (1896 to 1934)
Recent period (1951 to 1980)
Recent against earliest
Fitted trend
Last spring frost
13 April
19 April
6 April
13 days earlier
-2.7 days per decade
First autumn frost
1 November
19 October
9 November
21 days later
+3.5 days per decade
Growing days
203 days
186 days
216 days
30 days more
+6.2 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
76 years, 1880 to 1981
A day with at least 66.2 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 148.1 mm (5.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Chilliwack: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
66.2 mm (2.6 in)
5 years
87.2 mm (3.4 in)
10 years
101.5 mm (4.0 in)
25 years
120.0 mm (4.7 in)
50 years
134.0 mm (5.3 in)
100 years
148.1 mm (5.8 in)
Longer than the 76 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, 76 years of values from 1880 to 1981.
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: 122.6 mm (4.8 in) in 1979; 122.2 mm (4.8 in) in 1932; 119.6 mm (4.7 in) in 1914.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Chilliwack, at 1962. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1962 ran 0.2 C (0.3 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Chilliwack, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1962
+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 Chilliwack standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chilliwack 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.