Montreal/Pierre Elliott Trudea Weather Records (CA007025250)
Record envelope, standing records and threshold days for Montreal/Pierre Elliott Trudea (CA007025250), Quebec, Canada, with 76 years of record.
Key Facts for Montreal/Pierre Elliott Trudea
- Montreal/Pierre Elliott Trudea (CA007025250) is a weather station in Quebec, Canada at 45.47 latitude and -73.75 longitude, 36 m (118 ft) above sea level.
- The station reports from 1941 to 2016, 76 years of record.
- 1,464 records set at Montreal/Pierre Elliott Trudea still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Montreal/Pierre Elliott Trudea set a daily record high minimum temperature of 0.2 C (32.4 F) on 15 December 1983.
About the Station
- Location: Quebec, Canada, 45.47 latitude, -73.75 longitude.
- Elevation: 36 m (118 ft).
- Period of record: 1941 to 2016, 76 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 | 13.9 C (57.0 F) | -37.8 C (-36.0 F) | n/a | n/a |
| Feb | 15.0 C (59.0 F) | -33.9 C (-29.0 F) | n/a | n/a |
| Mar | 25.6 C (78.1 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Apr | 28.3 C (82.9 F) | -15.0 C (5.0 F) | n/a | n/a |
| May | 33.9 C (93.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Jun | 35.0 C (95.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Jul | 35.6 C (96.1 F) | 6.1 C (43.0 F) | n/a | n/a |
| Aug | 37.6 C (99.7 F) | 3.3 C (37.9 F) | n/a | n/a |
| Sep | 32.8 C (91.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Oct | 28.3 C (82.9 F) | -7.2 C (19.0 F) | n/a | n/a |
| Nov | 21.7 C (71.1 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -32.4 C (-26.3 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1941 | 8 |
| 1942 | 44 |
| 1943 | 40 |
| 1944 | 40 |
| 1945 | 49 |
| 1946 | 50 |
| 1947 | 55 |
| 1948 | 35 |
| 1949 | 55 |
| 1950 | 46 |
| 1951 | 43 |
| 1952 | 16 |
| 1953 | 47 |
| 1954 | 26 |
| 1955 | 33 |
| 1956 | 35 |
| 1957 | 40 |
| 1958 | 25 |
| 1959 | 50 |
| 1960 | 16 |
| 1961 | 21 |
| 1962 | 19 |
| 1963 | 33 |
| 1964 | 34 |
| 1965 | 32 |
| 1966 | 25 |
| 1967 | 28 |
| 1968 | 35 |
| 1969 | 17 |
| 1970 | 31 |
| 1971 | 26 |
| 1972 | 26 |
| 1973 | 27 |
| 1974 | 30 |
| 1975 | 26 |
| 1976 | 47 |
| 1977 | 31 |
| 1978 | 31 |
| 1979 | 46 |
| 1980 | 33 |
| 1981 | 45 |
| 1982 | 40 |
| 1983 | 28 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1975-08-01 | Record high maximum temperature | Record high maximum temperature 37.6 C (99.7 F) |
| 1975-09-26 | Record daily precipitation | Record daily precipitation 73.4 mm (2.9 in) |
| 1979-09-14 | Record daily precipitation | Record daily precipitation 81.9 mm (3.2 in) |
| 1981-01-03 | Record low maximum temperature | Record low maximum temperature -27.2 C (-17.0 F) |
Wettest Day of Each Month
Sep: 81.9 mm (3.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 32.1 mm (1.3 in) | 21 January 1979 |
| Feb | 39.4 mm (1.6 in) | 16 February 1954 |
| Mar | 37.6 mm (1.5 in) | 22 March 1955 |
| Apr | 34.5 mm (1.4 in) | 2 April 1979 |
| May | 37.6 mm (1.5 in) | 17 May 1945 |
| Jun | 54.1 mm (2.1 in) | 15 June 1943 |
| Jul | 55.4 mm (2.2 in) | 4 July 1951 |
| Aug | 68.8 mm (2.7 in) | 21 August 1952 |
| Sep | 81.9 mm (3.2 in) | 14 September 1979 |
| Oct | 54.9 mm (2.2 in) | 24 October 1959 |
| Nov | 55.1 mm (2.2 in) | 4 November 1950 |
| Dec | 50.8 mm (2.0 in) | 30 December 1942 |
Period of Record Coverage
1941 to 1983| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1941 | 122 | 33% | No |
| 1942 | 354 | 97% | 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 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 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 | 365 | 100% | Yes |
| 1960 | 366 | 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 | 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 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | 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 |
|---|---|---|---|---|---|---|
| 15 December 1983 | Montreal/Pierre Elliott Trudea, CA | daily high min | 0.2 C (32.4 F) | 1.3 C (2.3 F) | 1 year | 5 of 100 (Routine) |
| 6 December 1983 | Montreal/Pierre Elliott Trudea, CA | daily rain | 29.2 mm (1.1 in) | 16.0 mm (0.6 in) | 10 years | 31 of 100 (Routine) |
| 16 November 1983 | Montreal/Pierre Elliott Trudea, CA | daily snowfall | 21.3 cm (8.4 in) | 14.7 cm (5.8 in) | 17 years | 40 of 100 (Notable) |
| 16 November 1983 | Montreal/Pierre Elliott Trudea, CA | daily rain | 27.6 mm (1.1 in) | 13.9 mm (0.5 in) | 17 years | 28 of 100 (Routine) |
| 11 November 1983 | Montreal/Pierre Elliott Trudea, CA | daily rain | 25.2 mm (1.0 in) | 1.8 mm (0.07 in) | 36 years | 16 of 100 (Routine) |
| 5 November 1983 | Montreal/Pierre Elliott Trudea, CA | daily snowfall | 17.0 cm (6.7 in) | 13.4 cm (5.3 in) | 10 years | 35 of 100 (Notable) |
| 5 November 1983 | Montreal/Pierre Elliott Trudea, CA | daily rain | 30.9 mm (1.2 in) | 9.1 mm (0.36 in) | 13 years | 20 of 100 (Routine) |
| 4 November 1983 | Montreal/Pierre Elliott Trudea, CA | daily snowfall | 12.0 cm (4.7 in) | 7.4 cm (2.9 in) | 10 years | 22 of 100 (Routine) |
| 13 October 1983 | Montreal/Pierre Elliott Trudea, CA | daily high max | 24.9 C (76.8 F) | 1.0 C (1.8 F) | 28 years | 13 of 100 (Routine) |
| 13 October 1983 | Montreal/Pierre Elliott Trudea, CA | daily high min | 13.9 C (57.0 F) | 1.1 C (2.0 F) | 12 years | 9 of 100 (Routine) |
| 5 October 1983 | Montreal/Pierre Elliott Trudea, CA | daily rain | 30.4 mm (1.2 in) | 1.4 mm (0.06 in) | 41 years | 17 of 100 (Routine) |
| 3 October 1983 | Montreal/Pierre Elliott Trudea, CA | daily high min | 15.4 C (59.7 F) | 1.5 C (2.7 F) | 32 years | 16 of 100 (Routine) |
| 2 October 1983 | Montreal/Pierre Elliott Trudea, CA | daily high min | 15.4 C (59.7 F) | 2.1 C (3.8 F) | 4 years | 9 of 100 (Routine) |
| 21 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily rain | 31.0 mm (1.2 in) | 5.9 mm (0.23 in) | 24 years | 16 of 100 (Routine) |
| 20 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily high max | 31.4 C (88.5 F) | 2.0 C (3.6 F) | 36 years | 19 of 100 (Routine) |
| 15 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily low min (Tie) | 2.8 C (37.0 F) | tie | 29 years | 3 of 100 (Routine) |
| 6 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily high min | 21.2 C (70.2 F) | 0.6 C (1.1 F) | 40 years | 17 of 100 (Routine) |
| 6 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily high max | 31.8 C (89.2 F) | 0.7 C (1.3 F) | 34 years | 15 of 100 (Routine) |
| 5 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily high min | 18.8 C (65.8 F) | 0.5 C (0.9 F) | 37 years | 16 of 100 (Routine) |
| 5 September 1983 | Montreal/Pierre Elliott Trudea, CA | daily high max | 31.4 C (88.5 F) | 0.3 C (0.5 F) | 9 years | 6 of 100 (Routine) |
Climate Trend
42 complete years, 1942 to 1983| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1942 | 6.7 C | +0.47 C |
| 1943 | 5.3 C | -0.98 C |
| 1944 | 6.3 C | +0.03 C |
| 1945 | 6.4 C | +0.15 C |
| 1946 | 6.9 C | +0.58 C |
| 1947 | 6.4 C | +0.12 C |
| 1948 | 6.9 C | +0.65 C |
| 1949 | 7.6 C | +1.37 C |
| 1950 | 6.1 C | -0.15 C |
| 1951 | 6.5 C | +0.24 C |
| 1952 | 7.3 C | +1.02 C |
| 1953 | 8.3 C | +2.06 C |
| 1954 | 6.4 C | +0.10 C |
| 1955 | 6.8 C | +0.48 C |
| 1956 | 5.8 C | -0.50 C |
| 1957 | 7.1 C | +0.79 C |
| 1958 | 6.0 C | -0.25 C |
| 1959 | 7.0 C | +0.68 C |
| 1960 | 7.0 C | +0.72 C |
| 1961 | 6.7 C | +0.44 C |
| 1962 | 6.1 C | -0.22 C |
| 1963 | 5.8 C | -0.52 C |
| 1964 | 6.8 C | +0.50 C |
| 1965 | 6.1 C | -0.19 C |
| 1966 | 6.5 C | +0.25 C |
| 1967 | 5.4 C | -0.84 C |
| 1968 | 5.6 C | -0.72 C |
| 1969 | 6.0 C | -0.24 C |
| 1970 | 5.6 C | -0.69 C |
| 1971 | 5.6 C | -0.65 C |
| 1972 | 5.0 C | -1.24 C |
| 1973 | 6.9 C | +0.63 C |
| 1974 | 5.4 C | -0.90 C |
| 1975 | 6.5 C | +0.24 C |
| 1976 | 5.1 C | -1.21 C |
| 1977 | 6.0 C | -0.24 C |
| 1978 | 5.0 C | -1.24 C |
| 1979 | 6.3 C | +0.03 C |
| 1980 | 5.2 C | -1.11 C |
| 1981 | 6.5 C | +0.20 C |
| 1982 | 5.9 C | -0.40 C |
| 1983 | 6.9 C | +0.62 C |
The annual mean temperature here has fallen by 0.3 C (0.1 to 0.4) per decade over 1942 to 1983. In Fahrenheit: 0.5 F (0.1 to 0.8) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.2 C (-0.4 to -0.1) per decade | -0.4 F (-0.8 to -0.1) per decade | 1942 to 1983 | 42 | Fall |
| Mean daily maximum | -0.17 C (-0.33 to 0.00) per decade | -0.30 F (-0.60 to 0.00) per decade | 1942 to 1983 | 42 | Fall |
| Mean daily minimum | -0.3 C (-0.5 to -0.1) per decade | -0.6 F (-1.0 to -0.2) per decade | 1942 to 1983 | 42 | 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
1941 to 1983| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.6 C (99.7 F) | 1975 | 32.4 C (90.3 F) | 43 |
| Coldest night (TNn) | -37.8 C (-36.0 F) | 1957 | -29.4 C (-20.9 F) | 43 |
| Wettest day (Rx1day) | 81.9 mm (3.2 in) | 1979 | 45.5 mm (1.8 in) | 43 |
| Wettest five days (Rx5day) | 102.1 mm (4.0 in) | 1946 | 69.6 mm (2.7 in) | 43 |
| Longest dry spell (CDD) | 35 days | 1961 | 16 days | 43 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1941 | 28.3 C (82.9 F) |
| 1942 | 33.3 C (91.9 F) |
| 1943 | 32.2 C (90.0 F) |
| 1944 | 35.6 C (96.1 F) |
| 1945 | 32.2 C (90.0 F) |
| 1946 | 33.9 C (93.0 F) |
| 1947 | 33.9 C (93.0 F) |
| 1948 | 34.4 C (93.9 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 31.7 C (89.1 F) |
| 1951 | 30.6 C (87.1 F) |
| 1952 | 32.8 C (91.0 F) |
| 1953 | 35.6 C (96.1 F) |
| 1954 | 30.6 C (87.1 F) |
| 1955 | 35.6 C (96.1 F) |
| 1956 | 31.7 C (89.1 F) |
| 1957 | 32.8 C (91.0 F) |
| 1958 | 31.1 C (88.0 F) |
| 1959 | 33.9 C (93.0 F) |
| 1960 | 32.2 C (90.0 F) |
| 1961 | 31.7 C (89.1 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 34.4 C (93.9 F) |
| 1964 | 35.0 C (95.0 F) |
| 1965 | 31.7 C (89.1 F) |
| 1966 | 33.9 C (93.0 F) |
| 1967 | 30.6 C (87.1 F) |
| 1968 | 32.2 C (90.0 F) |
| 1969 | 32.2 C (90.0 F) |
| 1970 | 32.8 C (91.0 F) |
| 1971 | 32.8 C (91.0 F) |
| 1972 | 32.2 C (90.0 F) |
| 1973 | 32.2 C (90.0 F) |
| 1974 | 30.6 C (87.1 F) |
| 1975 | 37.6 C (99.7 F) |
| 1976 | 30.5 C (86.9 F) |
| 1977 | 32.6 C (90.7 F) |
| 1978 | 31.8 C (89.2 F) |
| 1979 | 32.3 C (90.1 F) |
| 1980 | 31.3 C (88.3 F) |
| 1981 | 32.4 C (90.3 F) |
| 1982 | 33.1 C (91.6 F) |
| 1983 | 33.1 C (91.6 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1941 | -25.0 C (-13.0 F) |
| 1942 | -32.2 C (-26.0 F) |
| 1943 | -33.9 C (-29.0 F) |
| 1944 | -30.0 C (-22.0 F) |
| 1945 | -30.6 C (-23.1 F) |
| 1946 | -28.3 C (-18.9 F) |
| 1947 | -28.9 C (-20.0 F) |
| 1948 | -30.0 C (-22.0 F) |
| 1949 | -22.8 C (-9.0 F) |
| 1950 | -29.4 C (-20.9 F) |
| 1951 | -32.2 C (-26.0 F) |
| 1952 | -26.7 C (-16.1 F) |
| 1953 | -22.2 C (-8.0 F) |
| 1954 | -29.4 C (-20.9 F) |
| 1955 | -31.1 C (-24.0 F) |
| 1956 | -25.0 C (-13.0 F) |
| 1957 | -37.8 C (-36.0 F) |
| 1958 | -27.8 C (-18.0 F) |
| 1959 | -29.4 C (-20.9 F) |
| 1960 | -27.2 C (-17.0 F) |
| 1961 | -27.2 C (-17.0 F) |
| 1962 | -31.7 C (-25.1 F) |
| 1963 | -30.0 C (-22.0 F) |
| 1964 | -25.0 C (-13.0 F) |
| 1965 | -29.4 C (-20.9 F) |
| 1966 | -26.7 C (-16.1 F) |
| 1967 | -31.7 C (-25.1 F) |
| 1968 | -31.7 C (-25.1 F) |
| 1969 | -25.0 C (-13.0 F) |
| 1970 | -28.9 C (-20.0 F) |
| 1971 | -30.6 C (-23.1 F) |
| 1972 | -31.7 C (-25.1 F) |
| 1973 | -30.6 C (-23.1 F) |
| 1974 | -27.8 C (-18.0 F) |
| 1975 | -27.8 C (-18.0 F) |
| 1976 | -31.1 C (-24.0 F) |
| 1977 | -26.4 C (-15.5 F) |
| 1978 | -26.2 C (-15.2 F) |
| 1979 | -28.5 C (-19.3 F) |
| 1980 | -32.4 C (-26.3 F) |
| 1981 | -35.2 C (-31.4 F) |
| 1982 | -28.3 C (-18.9 F) |
| 1983 | -27.0 C (-16.6 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1941 | 37.1 mm (1.5 in) |
| 1942 | 50.8 mm (2.0 in) |
| 1943 | 54.1 mm (2.1 in) |
| 1944 | 30.5 mm (1.2 in) |
| 1945 | 37.6 mm (1.5 in) |
| 1946 | 52.1 mm (2.1 in) |
| 1947 | 49.0 mm (1.9 in) |
| 1948 | 37.8 mm (1.5 in) |
| 1949 | 40.9 mm (1.6 in) |
| 1950 | 55.1 mm (2.2 in) |
| 1951 | 55.4 mm (2.2 in) |
| 1952 | 68.8 mm (2.7 in) |
| 1953 | 39.6 mm (1.6 in) |
| 1954 | 57.2 mm (2.3 in) |
| 1955 | 37.6 mm (1.5 in) |
| 1956 | 44.2 mm (1.7 in) |
| 1957 | 44.2 mm (1.7 in) |
| 1958 | 45.7 mm (1.8 in) |
| 1959 | 54.9 mm (2.2 in) |
| 1960 | 45.5 mm (1.8 in) |
| 1961 | 49.5 mm (1.9 in) |
| 1962 | 41.4 mm (1.6 in) |
| 1963 | 70.1 mm (2.8 in) |
| 1964 | 32.0 mm (1.3 in) |
| 1965 | 49.8 mm (2.0 in) |
| 1966 | 49.5 mm (1.9 in) |
| 1967 | 42.7 mm (1.7 in) |
| 1968 | 33.3 mm (1.3 in) |
| 1969 | 48.5 mm (1.9 in) |
| 1970 | 51.6 mm (2.0 in) |
| 1971 | 36.6 mm (1.4 in) |
| 1972 | 32.3 mm (1.3 in) |
| 1973 | 45.7 mm (1.8 in) |
| 1974 | 38.1 mm (1.5 in) |
| 1975 | 73.4 mm (2.9 in) |
| 1976 | 35.6 mm (1.4 in) |
| 1977 | 25.8 mm (1.0 in) |
| 1978 | 27.3 mm (1.1 in) |
| 1979 | 81.9 mm (3.2 in) |
| 1980 | 48.8 mm (1.9 in) |
| 1981 | 34.8 mm (1.4 in) |
| 1982 | 67.2 mm (2.6 in) |
| 1983 | 37.9 mm (1.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1941 | 61.5 mm (2.4 in) |
| 1942 | 90.0 mm (3.5 in) |
| 1943 | 87.7 mm (3.5 in) |
| 1944 | 48.3 mm (1.9 in) |
| 1945 | 76.3 mm (3.0 in) |
| 1946 | 102.1 mm (4.0 in) |
| 1947 | 73.2 mm (2.9 in) |
| 1948 | 62.9 mm (2.5 in) |
| 1949 | 74.4 mm (2.9 in) |
| 1950 | 61.9 mm (2.4 in) |
| 1951 | 65.6 mm (2.6 in) |
| 1952 | 81.3 mm (3.2 in) |
| 1953 | 58.9 mm (2.3 in) |
| 1954 | 69.2 mm (2.7 in) |
| 1955 | 68.4 mm (2.7 in) |
| 1956 | 62.8 mm (2.5 in) |
| 1957 | 84.4 mm (3.3 in) |
| 1958 | 95.2 mm (3.7 in) |
| 1959 | 71.4 mm (2.8 in) |
| 1960 | 71.8 mm (2.8 in) |
| 1961 | 69.6 mm (2.7 in) |
| 1962 | 63.5 mm (2.5 in) |
| 1963 | 70.1 mm (2.8 in) |
| 1964 | 42.5 mm (1.7 in) |
| 1965 | 65.3 mm (2.6 in) |
| 1966 | 54.8 mm (2.2 in) |
| 1967 | 77.8 mm (3.1 in) |
| 1968 | 55.4 mm (2.2 in) |
| 1969 | 66.6 mm (2.6 in) |
| 1970 | 74.4 mm (2.9 in) |
| 1971 | 55.1 mm (2.2 in) |
| 1972 | 58.5 mm (2.3 in) |
| 1973 | 78.4 mm (3.1 in) |
| 1974 | 51.5 mm (2.0 in) |
| 1975 | 101.1 mm (4.0 in) |
| 1976 | 45.3 mm (1.8 in) |
| 1977 | 54.4 mm (2.1 in) |
| 1978 | 53.3 mm (2.1 in) |
| 1979 | 92.5 mm (3.6 in) |
| 1980 | 86.0 mm (3.4 in) |
| 1981 | 73.8 mm (2.9 in) |
| 1982 | 82.2 mm (3.2 in) |
| 1983 | 72.5 mm (2.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1941 | 22 days |
| 1942 | 14 days |
| 1943 | 14 days |
| 1944 | 17 days |
| 1945 | 17 days |
| 1946 | 10 days |
| 1947 | 21 days |
| 1948 | 16 days |
| 1949 | 12 days |
| 1950 | 12 days |
| 1951 | 15 days |
| 1952 | 19 days |
| 1953 | 24 days |
| 1954 | 9 days |
| 1955 | 17 days |
| 1956 | 15 days |
| 1957 | 34 days |
| 1958 | 10 days |
| 1959 | 17 days |
| 1960 | 14 days |
| 1961 | 35 days |
| 1962 | 16 days |
| 1963 | 20 days |
| 1964 | 16 days |
| 1965 | 24 days |
| 1966 | 18 days |
| 1967 | 17 days |
| 1968 | 19 days |
| 1969 | 20 days |
| 1970 | 17 days |
| 1971 | 10 days |
| 1972 | 11 days |
| 1973 | 11 days |
| 1974 | 10 days |
| 1975 | 13 days |
| 1976 | 11 days |
| 1977 | 22 days |
| 1978 | 23 days |
| 1979 | 16 days |
| 1980 | 24 days |
| 1981 | 11 days |
| 1982 | 12 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
42 years with a frostAcross 42 years with a frost, the median last spring frost at Montreal/Pierre Elliott Trudea falls on 4 May and the median first autumn frost on 7 October, which leaves a median of 158 days between them.
Fitted over all years, the growing season changes by +1.3 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1954 to 1983) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 May | n/a | 5 May | n/a | -0.4 days per decade |
| First autumn frost | 7 October | n/a | 8 October | n/a | +0.9 days per decade |
| Growing days | 158 days | n/a | 159 days | n/a | +1.3 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
42 years, 1942 to 1983A day with at least 44.7 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 85.2 mm (3.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 44.7 mm (1.8 in) | |
| 5 years | 56.1 mm (2.2 in) | |
| 10 years | 63.4 mm (2.5 in) | |
| 25 years | 72.4 mm (2.9 in) | |
| 50 years | 78.9 mm (3.1 in) | Longer than the 42 years of record |
| 100 years | 85.2 mm (3.4 in) | Longer than the 42 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, 42 years of values from 1942 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: 81.9 mm (3.2 in) in 1979; 73.4 mm (2.9 in) in 1975; 70.1 mm (2.8 in) in 1963.
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).