Bella Coola Weather Records (CA001060840)
Record envelope, standing records and threshold days for Bella Coola (CA001060840), British Columbia, Canada, with 108 years of record.
Key Facts for Bella Coola
- Bella Coola (CA001060840) is a weather station in British Columbia, Canada at 52.37 latitude and -126.68 longitude, 18 m (59 ft) above sea level.
- The station reports from 1895 to 2002, 108 years of record.
- 1,464 records set at Bella Coola still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Bella Coola set a daily record low minimum temperature of -1.5 C (29.3 F) on 28 September 1983.
About the Station
- Location: British Columbia, Canada, 52.37 latitude, -126.68 longitude.
- Elevation: 18 m (59 ft).
- Period of record: 1895 to 2002, 108 years.
- Eligible elements: tmax, tmin, prcp, snow.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 12.8 C (55.0 F) | -28.9 C (-20.0 F) | n/a | n/a |
| Feb | 16.7 C (62.1 F) | -24.4 C (-11.9 F) | n/a | n/a |
| Mar | 23.9 C (75.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Apr | 29.4 C (84.9 F) | -9.4 C (15.1 F) | n/a | n/a |
| May | 37.8 C (100.0 F) | -6.1 C (21.0 F) | n/a | n/a |
| Jun | 36.1 C (97.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Jul | 37.8 C (100.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Aug | 37.8 C (100.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Sep | 33.3 C (91.9 F) | -4.4 C (24.1 F) | n/a | n/a |
| Oct | 25.0 C (77.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Nov | 20.0 C (68.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Dec | 15.6 C (60.1 F) | -24.4 C (-11.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1895 | 27 |
| 1896 | 37 |
| 1897 | 12 |
| 1898 | 29 |
| 1899 | 22 |
| 1900 | 15 |
| 1901 | 15 |
| 1902 | 5 |
| 1903 | 13 |
| 1904 | 11 |
| 1905 | 15 |
| 1906 | 4 |
| 1907 | 18 |
| 1908 | 11 |
| 1909 | 23 |
| 1910 | 20 |
| 1911 | 43 |
| 1912 | 15 |
| 1913 | 15 |
| 1914 | 16 |
| 1915 | 14 |
| 1916 | 30 |
| 1917 | 28 |
| 1918 | 17 |
| 1919 | 19 |
| 1920 | 11 |
| 1921 | 6 |
| 1922 | 16 |
| 1923 | 5 |
| 1924 | 19 |
| 1925 | 18 |
| 1926 | 18 |
| 1927 | 14 |
| 1928 | 8 |
| 1929 | 25 |
| 1930 | 21 |
| 1931 | 20 |
| 1932 | 10 |
| 1933 | 29 |
| 1934 | 21 |
| 1935 | 14 |
| 1936 | 32 |
| 1937 | 10 |
| 1938 | 12 |
| 1939 | 20 |
| 1940 | 25 |
| 1941 | 20 |
| 1942 | 17 |
| 1943 | 24 |
| 1944 | 12 |
| 1945 | 15 |
| 1946 | 12 |
| 1947 | 15 |
| 1948 | 11 |
| 1949 | 25 |
| 1950 | 42 |
| 1951 | 26 |
| 1952 | 17 |
| 1953 | 4 |
| 1954 | 16 |
| 1955 | 20 |
| 1956 | 20 |
| 1957 | 16 |
| 1958 | 23 |
| 1959 | 7 |
| 1960 | 7 |
| 1961 | 14 |
| 1962 | 13 |
| 1963 | 27 |
| 1964 | 8 |
| 1965 | 12 |
| 1966 | 9 |
| 1967 | 3 |
| 1968 | 17 |
| 1969 | 13 |
| 1970 | 18 |
| 1971 | 10 |
| 1972 | 10 |
| 1973 | 5 |
| 1974 | 10 |
| 1975 | 9 |
| 1976 | 7 |
| 1977 | 26 |
| 1978 | 6 |
| 1979 | 12 |
| 1980 | 17 |
| 1981 | 16 |
| 1982 | 13 |
| 1983 | 12 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1950-01-15 | Record low minimum temperature | Record low minimum temperature -28.9 C (-20.0 F) |
| 1971-01-15 | Record daily snowfall | Record daily snowfall 86.4 cm (34.0 in) |
| 1974-01-14 | Record daily snowfall | Record daily snowfall 89.2 cm (35.1 in) |
Wettest Day of Each Month
Aug: 157.5 mm (6.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 101.6 mm (4.0 in) | 7 January 1982 |
| Feb | 85.6 mm (3.4 in) | 6 February 1944 |
| Mar | 81.0 mm (3.2 in) | 20 March 1939 |
| Apr | 76.2 mm (3.0 in) | 20 April 1897 |
| May | 139.7 mm (5.5 in) | 5 May 1896 |
| Jun | 94.0 mm (3.7 in) | 12 June 1896 |
| Jul | 44.5 mm (1.8 in) | 15 July 1924 |
| Aug | 157.5 mm (6.2 in) | 19 August 1895 |
| Sep | 97.4 mm (3.8 in) | 5 September 1980 |
| Oct | 133.4 mm (5.3 in) | 17 October 1898 |
| Nov | 135.9 mm (5.4 in) | 3 November 1908 |
| Dec | 127.0 mm (5.0 in) | 29 December 1901 |
Period of Record Coverage
1895 to 1983| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1895 | 225 | 62% | No |
| 1896 | 365 | 100% | Yes |
| 1897 | 146 | 40% | No |
| 1898 | 327 | 90% | No |
| 1899 | 303 | 83% | No |
| 1900 | 205 | 56% | No |
| 1901 | 245 | 67% | No |
| 1902 | 253 | 69% | No |
| 1903 | 308 | 84% | No |
| 1904 | 362 | 99% | Yes |
| 1905 | 207 | 57% | No |
| 1906 | 233 | 64% | No |
| 1907 | 365 | 100% | Yes |
| 1908 | 366 | 100% | Yes |
| 1909 | 364 | 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 | 362 | 99% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 364 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 365 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 364 | 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 | 364 | 100% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 333 | 91% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 364 | 99% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | 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 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 336 | 92% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 28 September 1983 | Bella Coola, CA | daily low min | -1.5 C (29.3 F) | 0.4 C (0.7 F) | 53 years | 25 of 100 (Routine) |
| 1 September 1983 | Bella Coola, CA | daily high min | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 16 years | 13 of 100 (Routine) |
| 24 June 1983 | Bella Coola, CA | daily rain | 17.4 mm (0.7 in) | 0.4 mm (0.02 in) | 40 years | 20 of 100 (Routine) |
| 23 June 1983 | Bella Coola, CA | daily rain | 15.2 mm (0.6 in) | 2.0 mm (0.08 in) | 80 years | 20 of 100 (Routine) |
| 1 June 1983 | Bella Coola, CA | daily high min | 13.0 C (55.4 F) | 0.2 C (0.4 F) | 25 years | 15 of 100 (Routine) |
| 31 May 1983 | Bella Coola, CA | daily high min | 14.0 C (57.2 F) | 0.1 C (0.2 F) | 46 years | 22 of 100 (Routine) |
| 25 May 1983 | Bella Coola, CA | daily high min | 12.5 C (54.5 F) | 0.3 C (0.5 F) | 48 years | 22 of 100 (Routine) |
| 20 May 1983 | Bella Coola, CA | daily high min | 12.5 C (54.5 F) | 1.4 C (2.5 F) | 26 years | 20 of 100 (Routine) |
| 14 May 1983 | Bella Coola, CA | daily low max | 7.5 C (45.5 F) | 2.5 C (4.5 F) | 62 years | 31 of 100 (Routine) |
| 2 May 1983 | Bella Coola, CA | daily high min (Tie) | 10.0 C (50.0 F) | tie | 68 years | 7 of 100 (Routine) |
| 5 April 1983 | Bella Coola, CA | daily high min | 7.0 C (44.6 F) | 0.3 C (0.5 F) | 68 years | 28 of 100 (Routine) |
| 12 March 1983 | Bella Coola, CA | daily high min | 2.5 C (36.5 F) | 0.3 C (0.5 F) | 68 years | 28 of 100 (Routine) |
| 10 March 1983 | Bella Coola, CA | daily high min | 4.0 C (39.2 F) | 0.5 C (0.9 F) | 2 years | 9 of 100 (Routine) |
| 8 March 1983 | Bella Coola, CA | daily rain | 31.2 mm (1.2 in) | 1.0 mm (0.04 in) | 66 years | 29 of 100 (Routine) |
| 13 February 1983 | Bella Coola, CA | daily high min | 4.0 C (39.2 F) | 0.1 C (0.2 F) | 5 years | 9 of 100 (Routine) |
| 11 January 1983 | Bella Coola, CA | daily high max | 8.0 C (46.4 F) | 0.8 C (1.4 F) | 52 years | 24 of 100 (Routine) |
| 27 September 1982 | Bella Coola, CA | daily high min | 13.0 C (55.4 F) | 0.2 C (0.4 F) | 16 years | 12 of 100 (Routine) |
| 22 September 1982 | Bella Coola, CA | daily high min | 12.0 C (53.6 F) | 0.3 C (0.5 F) | 5 years | 9 of 100 (Routine) |
| 8 September 1982 | Bella Coola, CA | daily rain | 43.6 mm (1.7 in) | 4.5 mm (0.18 in) | 82 years | 35 of 100 (Notable) |
| 7 September 1982 | Bella Coola, CA | daily rain | 65.6 mm (2.6 in) | 34.4 mm (1.4 in) | 11 years | 41 of 100 (Notable) |
Climate Trend
74 complete years, 1899 to 1983| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1899 | 7.1 C | -0.30 C |
| 1904 | 6.7 C | -0.63 C |
| 1907 | 6.7 C | -0.68 C |
| 1908 | 6.6 C | -0.72 C |
| 1909 | 5.3 C | -2.04 C |
| 1910 | 6.5 C | -0.82 C |
| 1911 | 6.1 C | -1.30 C |
| 1912 | 7.7 C | +0.37 C |
| 1913 | 6.5 C | -0.82 C |
| 1914 | 7.5 C | +0.12 C |
| 1915 | 8.4 C | +1.06 C |
| 1917 | 6.2 C | -1.13 C |
| 1919 | 6.7 C | -0.68 C |
| 1920 | 6.6 C | -0.71 C |
| 1921 | 6.5 C | -0.82 C |
| 1922 | 6.8 C | -0.60 C |
| 1923 | 8.0 C | +0.62 C |
| 1924 | 7.4 C | +0.07 C |
| 1925 | 7.9 C | +0.54 C |
| 1926 | 8.4 C | +1.07 C |
| 1927 | 6.5 C | -0.89 C |
| 1928 | 7.9 C | +0.57 C |
| 1929 | 7.1 C | -0.21 C |
| 1930 | 7.2 C | -0.13 C |
| 1932 | 7.4 C | +0.02 C |
| 1933 | 7.1 C | -0.24 C |
| 1934 | 8.8 C | +1.41 C |
| 1935 | 7.7 C | +0.32 C |
| 1936 | 7.6 C | +0.25 C |
| 1937 | 7.0 C | -0.33 C |
| 1938 | 7.9 C | +0.57 C |
| 1939 | 7.9 C | +0.55 C |
| 1940 | 8.6 C | +1.20 C |
| 1941 | 8.6 C | +1.25 C |
| 1942 | 8.5 C | +1.18 C |
| 1943 | 7.5 C | +0.17 C |
| 1944 | 8.3 C | +0.92 C |
| 1945 | 7.3 C | -0.01 C |
| 1946 | 7.3 C | -0.01 C |
| 1947 | 7.4 C | +0.06 C |
| 1948 | 6.6 C | -0.71 C |
| 1949 | 5.7 C | -1.62 C |
| 1950 | 4.6 C | -2.77 C |
| 1951 | 6.5 C | -0.90 C |
| 1952 | 6.7 C | -0.65 C |
| 1953 | 7.7 C | +0.39 C |
| 1954 | 6.6 C | -0.74 C |
| 1955 | 6.0 C | -1.39 C |
| 1956 | 6.9 C | -0.50 C |
| 1957 | 7.1 C | -0.23 C |
| 1958 | 8.8 C | +1.46 C |
| 1960 | 7.8 C | +0.49 C |
| 1961 | 8.6 C | +1.29 C |
| 1962 | 8.2 C | +0.86 C |
| 1963 | 8.8 C | +1.48 C |
| 1964 | 7.2 C | -0.19 C |
| 1965 | 7.9 C | +0.57 C |
| 1966 | 7.7 C | +0.31 C |
| 1967 | 8.3 C | +0.90 C |
| 1968 | 7.4 C | +0.04 C |
| 1969 | 7.8 C | +0.40 C |
| 1970 | 7.4 C | 0.00 C |
| 1971 | 6.9 C | -0.48 C |
| 1972 | 6.7 C | -0.63 C |
| 1973 | 7.2 C | -0.14 C |
| 1974 | 7.8 C | +0.47 C |
| 1975 | 7.1 C | -0.30 C |
| 1976 | 7.7 C | +0.32 C |
| 1977 | 7.6 C | +0.29 C |
| 1978 | 7.8 C | +0.46 C |
| 1979 | 7.7 C | +0.37 C |
| 1981 | 8.8 C | +1.40 C |
| 1982 | 7.1 C | -0.27 C |
| 1983 | 8.4 C | +1.00 C |
The annual mean temperature here has risen by 0.11 C (0.03 to 0.19) per decade over 1899 to 1983. In Fahrenheit: 0.19 F (0.05 to 0.34) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.11 C (0.03 to 0.19) per decade | 0.19 F (0.05 to 0.34) per decade | 1899 to 1983 | 74 | Rise |
| Mean daily maximum | 0.05 C (-0.04 to 0.14) per decade | 0.1 F (-0.1 to 0.2) per decade | 1899 to 1983 | 74 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1899 to 1983 | 74 | 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
1895 to 1983| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 1905 | 32.2 C (90.0 F) | 89 |
| Coldest night (TNn) | -28.9 C (-20.0 F) | 1950 | -17.8 C (0.0 F) | 89 |
| Wettest day (Rx1day) | 157.5 mm (6.2 in) | 1895 | 68.0 mm (2.7 in) | 89 |
| Wettest five days (Rx5day) | 254.1 mm (10.0 in) | 1975 | 144.0 mm (5.7 in) | 89 |
| Longest dry spell (CDD) | 111 days | 1898 | 19 days | 89 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1895 | 35.0 C (95.0 F) |
| 1896 | 31.7 C (89.1 F) |
| 1897 | 32.2 C (90.0 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 36.7 C (98.1 F) |
| 1900 | 33.3 C (91.9 F) |
| 1901 | 33.3 C (91.9 F) |
| 1902 | 33.3 C (91.9 F) |
| 1903 | 36.1 C (97.0 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 37.8 C (100.0 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 35.6 C (96.1 F) |
| 1908 | 35.6 C (96.1 F) |
| 1909 | 31.7 C (89.1 F) |
| 1910 | 31.7 C (89.1 F) |
| 1911 | 34.4 C (93.9 F) |
| 1912 | 33.3 C (91.9 F) |
| 1913 | 30.6 C (87.1 F) |
| 1914 | 30.0 C (86.0 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 33.9 C (93.0 F) |
| 1917 | 28.9 C (84.0 F) |
| 1918 | 31.1 C (88.0 F) |
| 1919 | 30.0 C (86.0 F) |
| 1920 | 30.0 C (86.0 F) |
| 1921 | 27.2 C (81.0 F) |
| 1922 | 29.4 C (84.9 F) |
| 1923 | 31.1 C (88.0 F) |
| 1924 | 30.6 C (87.1 F) |
| 1925 | 30.6 C (87.1 F) |
| 1926 | 28.3 C (82.9 F) |
| 1927 | 31.7 C (89.1 F) |
| 1928 | 28.3 C (82.9 F) |
| 1929 | 33.3 C (91.9 F) |
| 1930 | 37.8 C (100.0 F) |
| 1931 | 29.4 C (84.9 F) |
| 1932 | 31.7 C (89.1 F) |
| 1933 | 32.8 C (91.0 F) |
| 1934 | 33.9 C (93.0 F) |
| 1935 | 31.7 C (89.1 F) |
| 1936 | 30.6 C (87.1 F) |
| 1937 | 33.3 C (91.9 F) |
| 1938 | 36.1 C (97.0 F) |
| 1939 | 31.7 C (89.1 F) |
| 1940 | 30.0 C (86.0 F) |
| 1941 | 34.4 C (93.9 F) |
| 1942 | 35.6 C (96.1 F) |
| 1943 | 28.9 C (84.0 F) |
| 1944 | 32.2 C (90.0 F) |
| 1945 | 30.6 C (87.1 F) |
| 1946 | 31.7 C (89.1 F) |
| 1947 | 33.3 C (91.9 F) |
| 1948 | 30.0 C (86.0 F) |
| 1949 | 28.9 C (84.0 F) |
| 1950 | 29.4 C (84.9 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 32.2 C (90.0 F) |
| 1954 | 27.2 C (81.0 F) |
| 1955 | 32.2 C (90.0 F) |
| 1956 | 32.2 C (90.0 F) |
| 1957 | 29.4 C (84.9 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 30.0 C (86.0 F) |
| 1960 | 34.4 C (93.9 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 28.9 C (84.0 F) |
| 1963 | 32.2 C (90.0 F) |
| 1964 | 28.3 C (82.9 F) |
| 1965 | 32.8 C (91.0 F) |
| 1966 | 30.0 C (86.0 F) |
| 1967 | 30.6 C (87.1 F) |
| 1968 | 30.0 C (86.0 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 27.8 C (82.0 F) |
| 1971 | 34.4 C (93.9 F) |
| 1972 | 30.6 C (87.1 F) |
| 1973 | 30.0 C (86.0 F) |
| 1974 | 33.3 C (91.9 F) |
| 1975 | 33.3 C (91.9 F) |
| 1976 | 26.1 C (79.0 F) |
| 1977 | 33.0 C (91.4 F) |
| 1978 | 31.0 C (87.8 F) |
| 1979 | 31.0 C (87.8 F) |
| 1980 | 30.5 C (86.9 F) |
| 1981 | 34.0 C (93.2 F) |
| 1982 | 32.5 C (90.5 F) |
| 1983 | 34.0 C (93.2 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1895 | -13.9 C (7.0 F) |
| 1896 | -17.8 C (0.0 F) |
| 1897 | -13.3 C (8.1 F) |
| 1898 | -13.3 C (8.1 F) |
| 1899 | -16.7 C (1.9 F) |
| 1900 | -13.9 C (7.0 F) |
| 1901 | -20.0 C (-4.0 F) |
| 1902 | -17.8 C (0.0 F) |
| 1903 | -15.0 C (5.0 F) |
| 1904 | -17.2 C (1.0 F) |
| 1905 | -13.9 C (7.0 F) |
| 1906 | -13.3 C (8.1 F) |
| 1907 | -18.3 C (-0.9 F) |
| 1908 | -14.4 C (6.1 F) |
| 1909 | -22.2 C (-8.0 F) |
| 1910 | -16.7 C (1.9 F) |
| 1911 | -27.8 C (-18.0 F) |
| 1912 | -19.4 C (-2.9 F) |
| 1913 | -17.8 C (0.0 F) |
| 1914 | -16.1 C (3.0 F) |
| 1915 | -11.7 C (10.9 F) |
| 1916 | -26.1 C (-15.0 F) |
| 1917 | -24.4 C (-11.9 F) |
| 1918 | -15.0 C (5.0 F) |
| 1919 | -17.2 C (1.0 F) |
| 1920 | -17.8 C (0.0 F) |
| 1921 | -14.4 C (6.1 F) |
| 1922 | -18.3 C (-0.9 F) |
| 1923 | -19.4 C (-2.9 F) |
| 1924 | -21.1 C (-6.0 F) |
| 1925 | -11.1 C (12.0 F) |
| 1926 | -12.2 C (10.0 F) |
| 1927 | -17.8 C (0.0 F) |
| 1928 | -16.7 C (1.9 F) |
| 1929 | -21.1 C (-6.0 F) |
| 1930 | -18.9 C (-2.0 F) |
| 1931 | -10.6 C (12.9 F) |
| 1932 | -18.3 C (-0.9 F) |
| 1933 | -17.8 C (0.0 F) |
| 1934 | -14.4 C (6.1 F) |
| 1935 | -21.7 C (-7.1 F) |
| 1936 | -22.8 C (-9.0 F) |
| 1937 | -18.9 C (-2.0 F) |
| 1938 | -15.6 C (3.9 F) |
| 1939 | -18.3 C (-0.9 F) |
| 1940 | -11.1 C (12.0 F) |
| 1941 | -15.0 C (5.0 F) |
| 1942 | -13.9 C (7.0 F) |
| 1943 | -22.2 C (-8.0 F) |
| 1944 | -12.8 C (9.0 F) |
| 1945 | -14.4 C (6.1 F) |
| 1946 | -15.6 C (3.9 F) |
| 1947 | -23.3 C (-9.9 F) |
| 1948 | -24.4 C (-11.9 F) |
| 1949 | -20.0 C (-4.0 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -20.6 C (-5.1 F) |
| 1952 | -21.1 C (-6.0 F) |
| 1953 | -17.8 C (0.0 F) |
| 1954 | -20.6 C (-5.1 F) |
| 1955 | -22.2 C (-8.0 F) |
| 1956 | -18.9 C (-2.0 F) |
| 1957 | -24.4 C (-11.9 F) |
| 1958 | -11.7 C (10.9 F) |
| 1959 | -15.0 C (5.0 F) |
| 1960 | -10.0 C (14.0 F) |
| 1961 | -9.4 C (15.1 F) |
| 1962 | -13.9 C (7.0 F) |
| 1963 | -15.6 C (3.9 F) |
| 1964 | -20.6 C (-5.1 F) |
| 1965 | -19.4 C (-2.9 F) |
| 1966 | -18.9 C (-2.0 F) |
| 1967 | -13.3 C (8.1 F) |
| 1968 | -23.9 C (-11.0 F) |
| 1969 | -19.4 C (-2.9 F) |
| 1970 | -16.7 C (1.9 F) |
| 1971 | -19.4 C (-2.9 F) |
| 1972 | -18.9 C (-2.0 F) |
| 1973 | -13.9 C (7.0 F) |
| 1974 | -16.7 C (1.9 F) |
| 1975 | -15.6 C (3.9 F) |
| 1976 | -15.6 C (3.9 F) |
| 1977 | -21.0 C (-5.8 F) |
| 1978 | -18.0 C (-0.4 F) |
| 1979 | -18.0 C (-0.4 F) |
| 1980 | -18.0 C (-0.4 F) |
| 1981 | -11.5 C (11.3 F) |
| 1982 | -19.0 C (-2.2 F) |
| 1983 | -14.0 C (6.8 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1895 | 157.5 mm (6.2 in) |
| 1896 | 139.7 mm (5.5 in) |
| 1897 | 76.2 mm (3.0 in) |
| 1898 | 133.4 mm (5.3 in) |
| 1899 | 60.2 mm (2.4 in) |
| 1900 | 71.1 mm (2.8 in) |
| 1901 | 127.0 mm (5.0 in) |
| 1902 | 72.6 mm (2.9 in) |
| 1903 | 88.9 mm (3.5 in) |
| 1904 | 44.7 mm (1.8 in) |
| 1905 | 35.6 mm (1.4 in) |
| 1906 | 61.7 mm (2.4 in) |
| 1907 | 55.6 mm (2.2 in) |
| 1908 | 135.9 mm (5.4 in) |
| 1909 | 52.8 mm (2.1 in) |
| 1910 | 36.8 mm (1.4 in) |
| 1911 | 48.3 mm (1.9 in) |
| 1912 | 56.9 mm (2.2 in) |
| 1913 | 58.7 mm (2.3 in) |
| 1914 | 71.1 mm (2.8 in) |
| 1915 | 48.5 mm (1.9 in) |
| 1916 | 52.1 mm (2.1 in) |
| 1917 | 58.4 mm (2.3 in) |
| 1918 | 44.7 mm (1.8 in) |
| 1919 | 91.4 mm (3.6 in) |
| 1920 | 88.6 mm (3.5 in) |
| 1921 | 38.6 mm (1.5 in) |
| 1922 | 72.1 mm (2.8 in) |
| 1923 | 40.1 mm (1.6 in) |
| 1924 | 80.5 mm (3.2 in) |
| 1925 | 62.5 mm (2.5 in) |
| 1926 | 57.2 mm (2.3 in) |
| 1927 | 61.0 mm (2.4 in) |
| 1928 | 57.7 mm (2.3 in) |
| 1929 | 74.7 mm (2.9 in) |
| 1930 | 58.4 mm (2.3 in) |
| 1931 | 47.2 mm (1.9 in) |
| 1932 | 69.9 mm (2.8 in) |
| 1933 | 83.3 mm (3.3 in) |
| 1934 | 81.0 mm (3.2 in) |
| 1935 | 71.1 mm (2.8 in) |
| 1936 | 98.6 mm (3.9 in) |
| 1937 | 57.2 mm (2.3 in) |
| 1938 | 77.5 mm (3.1 in) |
| 1939 | 93.0 mm (3.7 in) |
| 1940 | 79.2 mm (3.1 in) |
| 1941 | 53.8 mm (2.1 in) |
| 1942 | 61.2 mm (2.4 in) |
| 1943 | 58.2 mm (2.3 in) |
| 1944 | 85.6 mm (3.4 in) |
| 1945 | 51.1 mm (2.0 in) |
| 1946 | 50.5 mm (2.0 in) |
| 1947 | 89.9 mm (3.5 in) |
| 1948 | 39.9 mm (1.6 in) |
| 1949 | 73.2 mm (2.9 in) |
| 1950 | 117.3 mm (4.6 in) |
| 1951 | 35.8 mm (1.4 in) |
| 1952 | 90.9 mm (3.6 in) |
| 1953 | 55.4 mm (2.2 in) |
| 1954 | 69.1 mm (2.7 in) |
| 1955 | 45.0 mm (1.8 in) |
| 1956 | 53.6 mm (2.1 in) |
| 1957 | 71.4 mm (2.8 in) |
| 1958 | 80.0 mm (3.1 in) |
| 1959 | 56.4 mm (2.2 in) |
| 1960 | 44.7 mm (1.8 in) |
| 1961 | 62.2 mm (2.4 in) |
| 1962 | 70.6 mm (2.8 in) |
| 1963 | 69.1 mm (2.7 in) |
| 1964 | 61.5 mm (2.4 in) |
| 1965 | 84.8 mm (3.3 in) |
| 1966 | 63.5 mm (2.5 in) |
| 1967 | 64.5 mm (2.5 in) |
| 1968 | 72.6 mm (2.9 in) |
| 1969 | 43.7 mm (1.7 in) |
| 1970 | 56.6 mm (2.2 in) |
| 1971 | 86.4 mm (3.4 in) |
| 1972 | 62.5 mm (2.5 in) |
| 1973 | 68.3 mm (2.7 in) |
| 1974 | 89.2 mm (3.5 in) |
| 1975 | 114.0 mm (4.5 in) |
| 1976 | 81.3 mm (3.2 in) |
| 1977 | 68.0 mm (2.7 in) |
| 1978 | 82.4 mm (3.2 in) |
| 1979 | 49.6 mm (2.0 in) |
| 1980 | 97.4 mm (3.8 in) |
| 1981 | 92.0 mm (3.6 in) |
| 1982 | 101.6 mm (4.0 in) |
| 1983 | 57.4 mm (2.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1895 | 165.1 mm (6.5 in) |
| 1896 | 241.4 mm (9.5 in) |
| 1897 | 91.4 mm (3.6 in) |
| 1898 | 173.3 mm (6.8 in) |
| 1899 | 169.4 mm (6.7 in) |
| 1900 | 71.1 mm (2.8 in) |
| 1901 | 147.4 mm (5.8 in) |
| 1902 | 147.4 mm (5.8 in) |
| 1903 | 169.3 mm (6.7 in) |
| 1904 | 83.1 mm (3.3 in) |
| 1905 | 77.2 mm (3.0 in) |
| 1906 | 132.1 mm (5.2 in) |
| 1907 | 99.2 mm (3.9 in) |
| 1908 | 201.2 mm (7.9 in) |
| 1909 | 110.0 mm (4.3 in) |
| 1910 | 99.3 mm (3.9 in) |
| 1911 | 100.7 mm (4.0 in) |
| 1912 | 131.6 mm (5.2 in) |
| 1913 | 105.8 mm (4.2 in) |
| 1914 | 141.1 mm (5.6 in) |
| 1915 | 131.0 mm (5.2 in) |
| 1916 | 136.9 mm (5.4 in) |
| 1917 | 156.7 mm (6.2 in) |
| 1918 | 94.0 mm (3.7 in) |
| 1919 | 169.4 mm (6.7 in) |
| 1920 | 231.3 mm (9.1 in) |
| 1921 | 114.1 mm (4.5 in) |
| 1922 | 125.0 mm (4.9 in) |
| 1923 | 105.7 mm (4.2 in) |
| 1924 | 198.7 mm (7.8 in) |
| 1925 | 144.0 mm (5.7 in) |
| 1926 | 110.8 mm (4.4 in) |
| 1927 | 151.2 mm (6.0 in) |
| 1928 | 160.5 mm (6.3 in) |
| 1929 | 160.8 mm (6.3 in) |
| 1930 | 160.7 mm (6.3 in) |
| 1931 | 103.9 mm (4.1 in) |
| 1932 | 201.8 mm (7.9 in) |
| 1933 | 144.8 mm (5.7 in) |
| 1934 | 169.9 mm (6.7 in) |
| 1935 | 119.6 mm (4.7 in) |
| 1936 | 202.0 mm (8.0 in) |
| 1937 | 106.0 mm (4.2 in) |
| 1938 | 235.3 mm (9.3 in) |
| 1939 | 195.6 mm (7.7 in) |
| 1940 | 188.4 mm (7.4 in) |
| 1941 | 132.6 mm (5.2 in) |
| 1942 | 106.2 mm (4.2 in) |
| 1943 | 130.0 mm (5.1 in) |
| 1944 | 132.1 mm (5.2 in) |
| 1945 | 84.3 mm (3.3 in) |
| 1946 | 136.6 mm (5.4 in) |
| 1947 | 197.3 mm (7.8 in) |
| 1948 | 129.1 mm (5.1 in) |
| 1949 | 171.5 mm (6.8 in) |
| 1950 | 203.4 mm (8.0 in) |
| 1951 | 71.7 mm (2.8 in) |
| 1952 | 153.9 mm (6.1 in) |
| 1953 | 109.5 mm (4.3 in) |
| 1954 | 142.0 mm (5.6 in) |
| 1955 | 71.0 mm (2.8 in) |
| 1956 | 149.1 mm (5.9 in) |
| 1957 | 150.2 mm (5.9 in) |
| 1958 | 116.9 mm (4.6 in) |
| 1959 | 152.2 mm (6.0 in) |
| 1960 | 109.2 mm (4.3 in) |
| 1961 | 115.9 mm (4.6 in) |
| 1962 | 213.1 mm (8.4 in) |
| 1963 | 155.9 mm (6.1 in) |
| 1964 | 131.8 mm (5.2 in) |
| 1965 | 148.8 mm (5.9 in) |
| 1966 | 113.6 mm (4.5 in) |
| 1967 | 155.9 mm (6.1 in) |
| 1968 | 157.4 mm (6.2 in) |
| 1969 | 119.9 mm (4.7 in) |
| 1970 | 114.7 mm (4.5 in) |
| 1971 | 237.3 mm (9.3 in) |
| 1972 | 123.9 mm (4.9 in) |
| 1973 | 147.1 mm (5.8 in) |
| 1974 | 205.3 mm (8.1 in) |
| 1975 | 254.1 mm (10.0 in) |
| 1976 | 172.9 mm (6.8 in) |
| 1977 | 134.8 mm (5.3 in) |
| 1978 | 130.4 mm (5.1 in) |
| 1979 | 128.8 mm (5.1 in) |
| 1980 | 200.8 mm (7.9 in) |
| 1981 | 154.8 mm (6.1 in) |
| 1982 | 163.6 mm (6.4 in) |
| 1983 | 176.6 mm (7.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1895 | 18 days |
| 1896 | 58 days |
| 1897 | 24 days |
| 1898 | 111 days |
| 1899 | 21 days |
| 1900 | 19 days |
| 1901 | 26 days |
| 1902 | 18 days |
| 1903 | 67 days |
| 1904 | 23 days |
| 1905 | 25 days |
| 1906 | 11 days |
| 1907 | 34 days |
| 1908 | 21 days |
| 1909 | 15 days |
| 1910 | 17 days |
| 1911 | 24 days |
| 1912 | 17 days |
| 1913 | 12 days |
| 1914 | 27 days |
| 1915 | 18 days |
| 1916 | 21 days |
| 1917 | 17 days |
| 1918 | 29 days |
| 1919 | 17 days |
| 1920 | 16 days |
| 1921 | 14 days |
| 1922 | 26 days |
| 1923 | 21 days |
| 1924 | 27 days |
| 1925 | 24 days |
| 1926 | 20 days |
| 1927 | 24 days |
| 1928 | 31 days |
| 1929 | 22 days |
| 1930 | 26 days |
| 1931 | 18 days |
| 1932 | 16 days |
| 1933 | 18 days |
| 1934 | 22 days |
| 1935 | 17 days |
| 1936 | 12 days |
| 1937 | 14 days |
| 1938 | 18 days |
| 1939 | 10 days |
| 1940 | 14 days |
| 1941 | 17 days |
| 1942 | 32 days |
| 1943 | 17 days |
| 1944 | 17 days |
| 1945 | 16 days |
| 1946 | 29 days |
| 1947 | 13 days |
| 1948 | 15 days |
| 1949 | 22 days |
| 1950 | 19 days |
| 1951 | 22 days |
| 1952 | 29 days |
| 1953 | 14 days |
| 1954 | 22 days |
| 1955 | 13 days |
| 1956 | 19 days |
| 1957 | 22 days |
| 1958 | 23 days |
| 1959 | 16 days |
| 1960 | 20 days |
| 1961 | 19 days |
| 1962 | 20 days |
| 1963 | 20 days |
| 1964 | 16 days |
| 1965 | 30 days |
| 1966 | 11 days |
| 1967 | 32 days |
| 1968 | 18 days |
| 1969 | 20 days |
| 1970 | 15 days |
| 1971 | 18 days |
| 1972 | 13 days |
| 1973 | 21 days |
| 1974 | 19 days |
| 1975 | 18 days |
| 1976 | 9 days |
| 1977 | 22 days |
| 1978 | 24 days |
| 1979 | 17 days |
| 1980 | 11 days |
| 1981 | 34 days |
| 1982 | 32 days |
| 1983 | 15 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
74 years with a frostAcross 74 years with a frost, the median last spring frost at Bella Coola falls on 8 May and the median first autumn frost on 5 October, which leaves a median of 151 days between them.
In 1952 to 1983 the median growing season was 162 days. That is 21 days more than in 1899 to 1937.
Fitted over all years, the growing season changes by +3.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1899 to 1937) | Recent period (1952 to 1983) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 8 May | 9 May | 4 May | 5 days earlier | -1.4 days per decade |
| First autumn frost | 5 October | 27 September | 13 October | 16 days later | +2.5 days per decade |
| Growing days | 151 days | 141 days | 162 days | 21 days more | +3.9 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
83 years, 1896 to 1983A day with at least 65.8 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 140.4 mm (5.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 65.8 mm (2.6 in) | |
| 5 years | 85.3 mm (3.4 in) | |
| 10 years | 98.4 mm (3.9 in) | |
| 25 years | 115.1 mm (4.5 in) | |
| 50 years | 127.7 mm (5.0 in) | |
| 100 years | 140.4 mm (5.5 in) | Longer than the 83 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, 83 years of values from 1896 to 1983.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 139.7 mm (5.5 in) in 1896; 135.9 mm (5.4 in) in 1908; 127.0 mm (5.0 in) in 1901.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Bella Coola, at 1947 and 1957. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1947 ran 0.5 C (1.0 F) lower than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1957 ran 1.0 C (1.8 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1947 | -0.5 | -1.0 | possible | 5 |
| 1957 | +1.0 | +1.8 | likely | 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
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 . Last revised (2026-10-17).