Coquitlam Lake Weather Records (CA001101890)
Record envelope, standing records and threshold days for Coquitlam Lake (CA001101890), British Columbia, Canada, with 59 years of record.
Key Facts for Coquitlam Lake
- Coquitlam Lake (CA001101890) is a weather station in British Columbia, Canada at 49.37 latitude and -122.80 longitude, 161 m (528 ft) above sea level.
- The station reports from 1924 to 1982, 59 years of record.
- 1,464 records set at Coquitlam Lake still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Coquitlam Lake set a daily record high minimum temperature of 12.5 C (54.5 F) on 25 September 1982.
About the Station
- Location: British Columbia, Canada, 49.37 latitude, -122.80 longitude.
- Elevation: 161 m (528 ft).
- Period of record: 1924 to 1982, 59 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 | 13.3 C (55.9 F) | -18.9 C (-2.0 F) | n/a | n/a |
| Feb | 12.8 C (55.0 F) | -16.7 C (1.9 F) | n/a | n/a |
| Mar | 21.1 C (70.0 F) | -12.2 C (10.0 F) | n/a | n/a |
| Apr | 26.1 C (79.0 F) | -5.6 C (21.9 F) | n/a | n/a |
| May | 32.8 C (91.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Jun | 34.0 C (93.2 F) | 1.7 C (35.1 F) | n/a | n/a |
| Jul | 36.7 C (98.1 F) | 3.3 C (37.9 F) | n/a | n/a |
| Aug | 35.5 C (95.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Sep | 31.7 C (89.1 F) | -0.6 C (30.9 F) | n/a | n/a |
| Oct | 25.0 C (77.0 F) | -5.0 C (23.0 F) | n/a | n/a |
| Nov | 18.9 C (66.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Dec | 13.3 C (55.9 F) | -18.9 C (-2.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1935 | 20 |
| 1936 | 62 |
| 1937 | 41 |
| 1938 | 30 |
| 1939 | 38 |
| 1940 | 38 |
| 1941 | 52 |
| 1942 | 37 |
| 1943 | 20 |
| 1944 | 21 |
| 1945 | 25 |
| 1946 | 22 |
| 1947 | 20 |
| 1948 | 24 |
| 1949 | 47 |
| 1950 | 49 |
| 1951 | 24 |
| 1952 | 36 |
| 1953 | 21 |
| 1954 | 33 |
| 1955 | 46 |
| 1956 | 35 |
| 1957 | 19 |
| 1958 | 42 |
| 1959 | 32 |
| 1960 | 18 |
| 1961 | 29 |
| 1962 | 55 |
| 1963 | 35 |
| 1964 | 18 |
| 1965 | 21 |
| 1966 | 16 |
| 1967 | 13 |
| 1968 | 32 |
| 1969 | 25 |
| 1970 | 21 |
| 1971 | 25 |
| 1972 | 36 |
| 1973 | 28 |
| 1974 | 29 |
| 1975 | 21 |
| 1976 | 23 |
| 1977 | 36 |
| 1978 | 29 |
| 1979 | 24 |
| 1980 | 28 |
| 1981 | 49 |
| 1982 | 19 |
All-Time Record Progression
1 new records| Date | Kind | Detail |
|---|---|---|
| 1955-11-02 | Record daily precipitation | Record daily precipitation 203.2 mm (8.0 in) |
Wettest Day of Each Month
Nov: 203.2 mm (8.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 190.5 mm (7.5 in) | 18 January 1968 |
| Feb | 152.4 mm (6.0 in) | 15 February 1954 |
| Mar | 127.8 mm (5.0 in) | 25 March 1946 |
| Apr | 145.5 mm (5.7 in) | 28 April 1959 |
| May | 113.8 mm (4.5 in) | 1 May 1927 |
| Jun | 98.0 mm (3.9 in) | 16 June 1937 |
| Jul | 128.8 mm (5.1 in) | 11 July 1972 |
| Aug | 98.6 mm (3.9 in) | 31 August 1936 |
| Sep | 136.4 mm (5.4 in) | 29 September 1964 |
| Oct | 176.5 mm (6.9 in) | 12 October 1973 |
| Nov | 203.2 mm (8.0 in) | 2 November 1955 |
| Dec | 194.3 mm (7.6 in) | 29 December 1962 |
Period of Record Coverage
1935 to 1982| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1935 | 92 | 25% | No |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 365 | 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 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 364 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 363 | 99% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 360 | 99% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 350 | 96% | Yes |
| 1972 | 355 | 97% | Yes |
| 1973 | 362 | 99% | Yes |
| 1974 | 363 | 99% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 360 | 99% | Yes |
| 1978 | 339 | 93% | Yes |
| 1979 | 340 | 93% | Yes |
| 1980 | 342 | 93% | Yes |
| 1981 | 342 | 94% | Yes |
| 1982 | 257 | 70% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 25 September 1982 | Coquitlam Lake, CA | daily high min | 12.5 C (54.5 F) | 0.3 C (0.5 F) | 13 years | 9 of 100 (Routine) |
| 21 September 1982 | Coquitlam Lake, CA | daily high min (Tie) | 12.5 C (54.5 F) | tie | 3 years | 1 of 100 (Routine) |
| 8 September 1982 | Coquitlam Lake, CA | monthly high min (Tie) | 15.0 C (59.0 F) | tie | 5 years | 3 of 100 (Routine) |
| 11 August 1982 | Coquitlam Lake, CA | daily low max | 14.0 C (57.2 F) | 1.6 C (2.9 F) | 40 years | 19 of 100 (Routine) |
| 1 August 1982 | Coquitlam Lake, CA | daily low max | 12.0 C (53.6 F) | 0.8 C (1.4 F) | 24 years | 12 of 100 (Routine) |
| 27 July 1982 | Coquitlam Lake, CA | daily high max | 32.0 C (89.6 F) | 0.9 C (1.6 F) | 24 years | 12 of 100 (Routine) |
| 26 July 1982 | Coquitlam Lake, CA | daily high max | 32.0 C (89.6 F) | 0.9 C (1.6 F) | 24 years | 12 of 100 (Routine) |
| 19 July 1982 | Coquitlam Lake, CA | daily low max | 15.5 C (59.9 F) | 0.1 C (0.2 F) | 32 years | 13 of 100 (Routine) |
| 15 July 1982 | Coquitlam Lake, CA | daily low max | 13.0 C (55.4 F) | 0.3 C (0.5 F) | 17 years | 9 of 100 (Routine) |
| 13 July 1982 | Coquitlam Lake, CA | daily rain | 17.0 mm (0.7 in) | 2.5 mm (0.10 in) | 13 years | 10 of 100 (Routine) |
| 3 July 1982 | Coquitlam Lake, CA | daily rain | 70.2 mm (2.8 in) | 14.1 mm (0.6 in) | 43 years | 26 of 100 (Routine) |
| 2 July 1982 | Coquitlam Lake, CA | daily rain | 45.8 mm (1.8 in) | 10.2 mm (0.4 in) | 16 years | 16 of 100 (Routine) |
| 26 June 1982 | Coquitlam Lake, CA | daily rain | 26.0 mm (1.0 in) | 1.9 mm (0.07 in) | 20 years | 12 of 100 (Routine) |
| 24 June 1982 | Coquitlam Lake, CA | daily high max | 30.0 C (86.0 F) | 1.7 C (3.1 F) | 41 years | 19 of 100 (Routine) |
| 19 June 1982 | Coquitlam Lake, CA | monthly high max | 34.0 C (93.2 F) | 0.7 C (1.3 F) | 5 years | 16 of 100 (Routine) |
| 24 April 1982 | Coquitlam Lake, CA | daily low min | -1.0 C (30.2 F) | 0.4 C (0.7 F) | 23 years | 11 of 100 (Routine) |
| 22 April 1982 | Coquitlam Lake, CA | daily high max | 23.0 C (73.4 F) | 2.4 C (4.3 F) | 41 years | 21 of 100 (Routine) |
| 21 April 1982 | Coquitlam Lake, CA | daily high max | 22.0 C (71.6 F) | 1.4 C (2.5 F) | 41 years | 19 of 100 (Routine) |
| 18 April 1982 | Coquitlam Lake, CA | daily low min | -2.0 C (28.4 F) | 0.9 C (1.6 F) | 28 years | 15 of 100 (Routine) |
| 14 April 1982 | Coquitlam Lake, CA | daily low max | 4.0 C (39.2 F) | 1.6 C (2.9 F) | 17 years | 12 of 100 (Routine) |
Climate Trend
43 complete years, 1936 to 1980| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1936 | 8.7 C | +0.23 C |
| 1937 | 8.1 C | -0.37 C |
| 1938 | 9.1 C | +0.70 C |
| 1939 | 9.1 C | +0.70 C |
| 1940 | 9.9 C | +1.49 C |
| 1941 | 9.9 C | +1.46 C |
| 1942 | 9.2 C | +0.72 C |
| 1943 | 8.6 C | +0.15 C |
| 1944 | 9.0 C | +0.56 C |
| 1945 | 8.4 C | -0.06 C |
| 1946 | 8.4 C | -0.07 C |
| 1947 | 8.5 C | +0.04 C |
| 1948 | 7.8 C | -0.69 C |
| 1949 | 7.4 C | -1.05 C |
| 1950 | 7.4 C | -1.06 C |
| 1951 | 8.3 C | -0.19 C |
| 1952 | 8.5 C | +0.08 C |
| 1953 | 8.8 C | +0.36 C |
| 1954 | 7.7 C | -0.79 C |
| 1955 | 6.8 C | -1.61 C |
| 1956 | 7.9 C | -0.59 C |
| 1957 | 8.0 C | -0.48 C |
| 1958 | 10.1 C | +1.69 C |
| 1959 | 8.2 C | -0.28 C |
| 1960 | 8.3 C | -0.16 C |
| 1961 | 8.8 C | +0.37 C |
| 1962 | 8.3 C | -0.14 C |
| 1963 | 8.3 C | -0.10 C |
| 1964 | 7.5 C | -0.91 C |
| 1965 | 8.3 C | -0.13 C |
| 1966 | 8.2 C | -0.26 C |
| 1967 | 9.1 C | +0.69 C |
| 1968 | 8.7 C | +0.21 C |
| 1969 | 8.2 C | -0.28 C |
| 1970 | 8.6 C | +0.12 C |
| 1971 | 7.7 C | -0.78 C |
| 1972 | 7.9 C | -0.58 C |
| 1973 | 8.5 C | +0.06 C |
| 1974 | 8.8 C | +0.34 C |
| 1975 | 8.1 C | -0.34 C |
| 1976 | 8.7 C | +0.24 C |
| 1977 | 9.2 C | +0.78 C |
| 1980 | 8.5 C | +0.03 C |
The fitted trend in annual mean temperature here over 1936 to 1980 is -0.1 C (-0.3 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.5 to 0.1) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.1 C (-0.3 to 0.1) per decade | -0.2 F (-0.5 to 0.1) per decade | 1936 to 1980 | 43 | Not clearly different from zero |
| Mean daily maximum | -0.2 C (-0.4 to 0.1) per decade | -0.3 F (-0.7 to 0.1) per decade | 1936 to 1980 | 43 | Not clearly different from zero |
| Mean daily minimum | -0.04 C (-0.19 to 0.11) per decade | -0.1 F (-0.3 to 0.2) per decade | 1936 to 1980 | 43 | Not clearly different from zero |
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
1924 to 1982| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 36.7 C (98.1 F) | 1941 | 31.7 C (89.1 F) | 48 |
| Coldest night (TNn) | -18.9 C (-2.0 F) | 1950 | -10.0 C (14.0 F) | 48 |
| Wettest day (Rx1day) | 203.2 mm (8.0 in) | 1955 | 128.8 mm (5.1 in) | 59 |
| Wettest five days (Rx5day) | 598.4 mm (23.6 in) | 1935 | 300.0 mm (11.8 in) | 59 |
| Longest dry spell (CDD) | 50 days | 1960 | 21 days | 59 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1924 | n/a |
| 1925 | n/a |
| 1926 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | 24.4 C (75.9 F) |
| 1936 | 33.3 C (91.9 F) |
| 1937 | 31.7 C (89.1 F) |
| 1938 | 33.3 C (91.9 F) |
| 1939 | 32.2 C (90.0 F) |
| 1940 | 32.2 C (90.0 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 34.4 C (93.9 F) |
| 1943 | 30.0 C (86.0 F) |
| 1944 | 31.1 C (88.0 F) |
| 1945 | 31.1 C (88.0 F) |
| 1946 | 31.7 C (89.1 F) |
| 1947 | 30.0 C (86.0 F) |
| 1948 | 30.0 C (86.0 F) |
| 1949 | 30.0 C (86.0 F) |
| 1950 | 31.1 C (88.0 F) |
| 1951 | 32.2 C (90.0 F) |
| 1952 | 32.2 C (90.0 F) |
| 1953 | 30.0 C (86.0 F) |
| 1954 | 24.4 C (75.9 F) |
| 1955 | 30.0 C (86.0 F) |
| 1956 | 32.2 C (90.0 F) |
| 1957 | 26.7 C (80.1 F) |
| 1958 | 31.7 C (89.1 F) |
| 1959 | 30.0 C (86.0 F) |
| 1960 | 33.3 C (91.9 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 31.1 C (88.0 F) |
| 1963 | 31.1 C (88.0 F) |
| 1964 | 27.8 C (82.0 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 28.3 C (82.9 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 30.6 C (87.1 F) |
| 1969 | 31.1 C (88.0 F) |
| 1970 | 31.7 C (89.1 F) |
| 1971 | 32.8 C (91.0 F) |
| 1972 | 31.1 C (88.0 F) |
| 1973 | 32.8 C (91.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 30.6 C (87.1 F) |
| 1976 | 28.9 C (84.0 F) |
| 1977 | 33.9 C (93.0 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 33.0 C (91.4 F) |
| 1980 | 30.0 C (86.0 F) |
| 1981 | 35.5 C (95.9 F) |
| 1982 | 34.0 C (93.2 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1924 | n/a |
| 1925 | n/a |
| 1926 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | -5.6 C (21.9 F) |
| 1936 | -16.1 C (3.0 F) |
| 1937 | -15.0 C (5.0 F) |
| 1938 | -5.6 C (21.9 F) |
| 1939 | -7.8 C (18.0 F) |
| 1940 | -5.6 C (21.9 F) |
| 1941 | -10.0 C (14.0 F) |
| 1942 | -8.3 C (17.1 F) |
| 1943 | -15.0 C (5.0 F) |
| 1944 | -6.7 C (19.9 F) |
| 1945 | -6.7 C (19.9 F) |
| 1946 | -7.8 C (18.0 F) |
| 1947 | -15.6 C (3.9 F) |
| 1948 | -8.9 C (16.0 F) |
| 1949 | -15.6 C (3.9 F) |
| 1950 | -18.9 C (-2.0 F) |
| 1951 | -12.2 C (10.0 F) |
| 1952 | -11.1 C (12.0 F) |
| 1953 | -3.3 C (26.1 F) |
| 1954 | -10.0 C (14.0 F) |
| 1955 | -17.8 C (0.0 F) |
| 1956 | -12.2 C (10.0 F) |
| 1957 | -15.6 C (3.9 F) |
| 1958 | -4.4 C (24.1 F) |
| 1959 | -13.3 C (8.1 F) |
| 1960 | -6.1 C (21.0 F) |
| 1961 | -8.9 C (16.0 F) |
| 1962 | -16.7 C (1.9 F) |
| 1963 | -12.8 C (9.0 F) |
| 1964 | -16.7 C (1.9 F) |
| 1965 | -5.6 C (21.9 F) |
| 1966 | -5.6 C (21.9 F) |
| 1967 | -8.9 C (16.0 F) |
| 1968 | -18.9 C (-2.0 F) |
| 1969 | -17.8 C (0.0 F) |
| 1970 | -7.2 C (19.0 F) |
| 1971 | -9.4 C (15.1 F) |
| 1972 | -12.2 C (10.0 F) |
| 1973 | -10.0 C (14.0 F) |
| 1974 | -10.6 C (12.9 F) |
| 1975 | -7.8 C (18.0 F) |
| 1976 | -7.2 C (19.0 F) |
| 1977 | -7.8 C (18.0 F) |
| 1978 | -14.0 C (6.8 F) |
| 1979 | -14.0 C (6.8 F) |
| 1980 | -14.0 C (6.8 F) |
| 1981 | -8.0 C (17.6 F) |
| 1982 | -14.0 C (6.8 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1924 | 146.1 mm (5.8 in) |
| 1925 | 156.0 mm (6.1 in) |
| 1926 | 76.7 mm (3.0 in) |
| 1927 | 113.8 mm (4.5 in) |
| 1928 | 92.7 mm (3.6 in) |
| 1929 | 118.6 mm (4.7 in) |
| 1930 | 140.2 mm (5.5 in) |
| 1931 | 199.6 mm (7.9 in) |
| 1932 | 128.0 mm (5.0 in) |
| 1933 | 168.1 mm (6.6 in) |
| 1934 | 113.8 mm (4.5 in) |
| 1935 | 148.1 mm (5.8 in) |
| 1936 | 101.1 mm (4.0 in) |
| 1937 | 118.6 mm (4.7 in) |
| 1938 | 112.3 mm (4.4 in) |
| 1939 | 119.9 mm (4.7 in) |
| 1940 | 172.2 mm (6.8 in) |
| 1941 | 144.3 mm (5.7 in) |
| 1942 | 83.8 mm (3.3 in) |
| 1943 | 105.2 mm (4.1 in) |
| 1944 | 111.8 mm (4.4 in) |
| 1945 | 148.6 mm (5.9 in) |
| 1946 | 127.8 mm (5.0 in) |
| 1947 | 143.5 mm (5.6 in) |
| 1948 | 117.3 mm (4.6 in) |
| 1949 | 120.9 mm (4.8 in) |
| 1950 | 128.3 mm (5.1 in) |
| 1951 | 144.8 mm (5.7 in) |
| 1952 | 85.6 mm (3.4 in) |
| 1953 | 114.3 mm (4.5 in) |
| 1954 | 152.4 mm (6.0 in) |
| 1955 | 203.2 mm (8.0 in) |
| 1956 | 114.3 mm (4.5 in) |
| 1957 | 95.3 mm (3.8 in) |
| 1958 | 90.4 mm (3.6 in) |
| 1959 | 145.5 mm (5.7 in) |
| 1960 | 90.2 mm (3.6 in) |
| 1961 | 180.3 mm (7.1 in) |
| 1962 | 194.3 mm (7.6 in) |
| 1963 | 152.4 mm (6.0 in) |
| 1964 | 151.1 mm (5.9 in) |
| 1965 | 134.6 mm (5.3 in) |
| 1966 | 194.3 mm (7.6 in) |
| 1967 | 175.5 mm (6.9 in) |
| 1968 | 190.5 mm (7.5 in) |
| 1969 | 73.7 mm (2.9 in) |
| 1970 | 142.7 mm (5.6 in) |
| 1971 | 115.8 mm (4.6 in) |
| 1972 | 128.8 mm (5.1 in) |
| 1973 | 176.5 mm (6.9 in) |
| 1974 | 151.1 mm (5.9 in) |
| 1975 | 139.7 mm (5.5 in) |
| 1976 | 111.8 mm (4.4 in) |
| 1977 | 119.4 mm (4.7 in) |
| 1978 | 73.0 mm (2.9 in) |
| 1979 | 148.0 mm (5.8 in) |
| 1980 | 134.8 mm (5.3 in) |
| 1981 | 154.4 mm (6.1 in) |
| 1982 | 70.2 mm (2.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1924 | 368.9 mm (14.5 in) |
| 1925 | 269.1 mm (10.6 in) |
| 1926 | 189.0 mm (7.4 in) |
| 1927 | 217.9 mm (8.6 in) |
| 1928 | 315.7 mm (12.4 in) |
| 1929 | 324.7 mm (12.8 in) |
| 1930 | 291.4 mm (11.5 in) |
| 1931 | 386.8 mm (15.2 in) |
| 1932 | 400.7 mm (15.8 in) |
| 1933 | 317.7 mm (12.5 in) |
| 1934 | 335.8 mm (13.2 in) |
| 1935 | 598.4 mm (23.6 in) |
| 1936 | 249.0 mm (9.8 in) |
| 1937 | 264.0 mm (10.4 in) |
| 1938 | 380.8 mm (15.0 in) |
| 1939 | 387.3 mm (15.2 in) |
| 1940 | 313.4 mm (12.3 in) |
| 1941 | 315.4 mm (12.4 in) |
| 1942 | 159.2 mm (6.3 in) |
| 1943 | 246.4 mm (9.7 in) |
| 1944 | 256.1 mm (10.1 in) |
| 1945 | 253.7 mm (10.0 in) |
| 1946 | 314.6 mm (12.4 in) |
| 1947 | 435.4 mm (17.1 in) |
| 1948 | 285.6 mm (11.2 in) |
| 1949 | 307.1 mm (12.1 in) |
| 1950 | 300.0 mm (11.8 in) |
| 1951 | 367.3 mm (14.5 in) |
| 1952 | 191.8 mm (7.6 in) |
| 1953 | 270.5 mm (10.6 in) |
| 1954 | 362.0 mm (14.3 in) |
| 1955 | 386.6 mm (15.2 in) |
| 1956 | 232.9 mm (9.2 in) |
| 1957 | 203.3 mm (8.0 in) |
| 1958 | 227.1 mm (8.9 in) |
| 1959 | 385.5 mm (15.2 in) |
| 1960 | 214.7 mm (8.5 in) |
| 1961 | 415.3 mm (16.4 in) |
| 1962 | 429.3 mm (16.9 in) |
| 1963 | 455.2 mm (17.9 in) |
| 1964 | 288.2 mm (11.3 in) |
| 1965 | 285.0 mm (11.2 in) |
| 1966 | 442.2 mm (17.4 in) |
| 1967 | 384.1 mm (15.1 in) |
| 1968 | 479.9 mm (18.9 in) |
| 1969 | 225.8 mm (8.9 in) |
| 1970 | 363.1 mm (14.3 in) |
| 1971 | 251.5 mm (9.9 in) |
| 1972 | 367.1 mm (14.5 in) |
| 1973 | 260.4 mm (10.3 in) |
| 1974 | 318.2 mm (12.5 in) |
| 1975 | 299.7 mm (11.8 in) |
| 1976 | 266.0 mm (10.5 in) |
| 1977 | 246.9 mm (9.7 in) |
| 1978 | 193.8 mm (7.6 in) |
| 1979 | 200.0 mm (7.9 in) |
| 1980 | 287.5 mm (11.3 in) |
| 1981 | 349.6 mm (13.8 in) |
| 1982 | 135.2 mm (5.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1924 | 19 days |
| 1925 | 21 days |
| 1926 | 14 days |
| 1927 | 18 days |
| 1928 | 38 days |
| 1929 | 23 days |
| 1930 | 23 days |
| 1931 | 22 days |
| 1932 | 16 days |
| 1933 | 13 days |
| 1934 | 30 days |
| 1935 | 24 days |
| 1936 | 39 days |
| 1937 | 36 days |
| 1938 | 21 days |
| 1939 | 38 days |
| 1940 | 32 days |
| 1941 | 22 days |
| 1942 | 37 days |
| 1943 | 20 days |
| 1944 | 19 days |
| 1945 | 16 days |
| 1946 | 22 days |
| 1947 | 21 days |
| 1948 | 12 days |
| 1949 | 15 days |
| 1950 | 19 days |
| 1951 | 38 days |
| 1952 | 20 days |
| 1953 | 20 days |
| 1954 | 11 days |
| 1955 | 21 days |
| 1956 | 26 days |
| 1957 | 18 days |
| 1958 | 34 days |
| 1959 | 16 days |
| 1960 | 50 days |
| 1961 | 26 days |
| 1962 | 15 days |
| 1963 | 28 days |
| 1964 | 10 days |
| 1965 | 26 days |
| 1966 | 15 days |
| 1967 | 20 days |
| 1968 | 23 days |
| 1969 | 22 days |
| 1970 | 24 days |
| 1971 | 20 days |
| 1972 | 33 days |
| 1973 | 22 days |
| 1974 | 20 days |
| 1975 | 16 days |
| 1976 | 16 days |
| 1977 | 24 days |
| 1978 | 14 days |
| 1979 | 32 days |
| 1980 | 12 days |
| 1981 | 20 days |
| 1982 | 19 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
43 years with a frostAcross 43 years with a frost, the median last spring frost at Coquitlam Lake falls on 26 April and the median first autumn frost on 2 November, which leaves a median of 190 days between them.
Fitted over all years, the growing season changes by -7.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1949 to 1980) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 26 April | n/a | 29 April | n/a | +6.2 days per decade |
| First autumn frost | 2 November | n/a | 29 October | n/a | -1.4 days per decade |
| Growing days | 190 days | n/a | 184 days | n/a | -7.6 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
57 years, 1924 to 1980A day with at least 131.1 mm (5.2 in) of rain is expected about once in 2 years. A day with at least 215.8 mm (8.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 131.1 mm (5.2 in) | |
| 5 years | 160.8 mm (6.3 in) | |
| 10 years | 177.2 mm (7.0 in) | |
| 25 years | 194.9 mm (7.7 in) | |
| 50 years | 206.0 mm (8.1 in) | |
| 100 years | 215.8 mm (8.5 in) | Longer than the 57 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, 57 years of values from 1924 to 1980.
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: 203.2 mm (8.0 in) in 1955; 199.6 mm (7.9 in) in 1931; 194.3 mm (7.6 in) in 1962.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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).