Heaslip Weather Records (CA006073420)
Record envelope, standing records and threshold days for Heaslip (CA006073420), Ontario, Canada, with 40 years of record.
Key Facts for Heaslip
- Heaslip (CA006073420) is a weather station in Ontario, Canada at 47.80 latitude and -79.83 longitude, 222 m (728 ft) above sea level.
- The station reports from 1928 to 1967, 40 years of record.
- 1,464 records set at Heaslip still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Heaslip set a monthly record daily precipitation of 31.8 mm (1.3 in) on 22 April 1967.
About the Station
- Location: Ontario, Canada, 47.80 latitude, -79.83 longitude.
- Elevation: 222 m (728 ft).
- Period of record: 1928 to 1967, 40 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 | 8.9 C (48.0 F) | -50.0 C (-58.0 F) | n/a | n/a |
| Feb | 7.8 C (46.0 F) | -45.6 C (-50.1 F) | n/a | n/a |
| Mar | 23.3 C (73.9 F) | -43.3 C (-45.9 F) | n/a | n/a |
| Apr | 27.8 C (82.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| May | 32.2 C (90.0 F) | -12.2 C (10.0 F) | n/a | n/a |
| Jun | 35.6 C (96.1 F) | -6.1 C (21.0 F) | n/a | n/a |
| Jul | 37.8 C (100.0 F) | -5.6 C (21.9 F) | n/a | n/a |
| Aug | 36.1 C (97.0 F) | -10.0 C (14.0 F) | n/a | n/a |
| Sep | 34.4 C (93.9 F) | -9.4 C (15.1 F) | n/a | n/a |
| Oct | 29.4 C (84.9 F) | -20.0 C (-4.0 F) | n/a | n/a |
| Nov | 22.2 C (72.0 F) | -31.7 C (-25.1 F) | n/a | n/a |
| Dec | 12.2 C (54.0 F) | -48.3 C (-54.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1928 | 9 |
| 1929 | 60 |
| 1930 | 43 |
| 1931 | 39 |
| 1932 | 56 |
| 1933 | 76 |
| 1934 | 77 |
| 1935 | 47 |
| 1936 | 56 |
| 1937 | 51 |
| 1938 | 35 |
| 1939 | 34 |
| 1940 | 36 |
| 1941 | 22 |
| 1942 | 38 |
| 1943 | 32 |
| 1944 | 41 |
| 1945 | 48 |
| 1946 | 53 |
| 1947 | 39 |
| 1948 | 25 |
| 1949 | 28 |
| 1950 | 41 |
| 1951 | 39 |
| 1952 | 25 |
| 1953 | 28 |
| 1954 | 6 |
| 1955 | 46 |
| 1956 | 32 |
| 1957 | 40 |
| 1958 | 43 |
| 1959 | 48 |
| 1960 | 27 |
| 1961 | 18 |
| 1962 | 22 |
| 1963 | 21 |
| 1965 | 25 |
| 1966 | 41 |
| 1967 | 17 |
Wettest Day of Each Month
Jun: 109.5 mm (4.3 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 30.5 mm (1.2 in) | 23 January 1929 |
| Feb | 32.3 mm (1.3 in) | 21 February 1937 |
| Mar | 22.4 mm (0.9 in) | 29 March 1951 |
| Apr | 31.8 mm (1.3 in) | 22 April 1967 |
| May | 40.9 mm (1.6 in) | 2 May 1936 |
| Jun | 109.5 mm (4.3 in) | 27 June 1941 |
| Jul | 73.2 mm (2.9 in) | 24 July 1945 |
| Aug | 45.5 mm (1.8 in) | 1 August 1966 |
| Sep | 62.5 mm (2.5 in) | 1 September 1945 |
| Oct | 47.2 mm (1.9 in) | 22 October 1929 |
| Nov | 63.5 mm (2.5 in) | 23 November 1934 |
| Dec | 35.8 mm (1.4 in) | 20 December 1957 |
Period of Record Coverage
1928 to 1967| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1928 | 46 | 13% | No |
| 1929 | 363 | 99% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 334 | 92% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 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 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 336 | 92% | Yes |
| 1950 | 334 | 92% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 364 | 99% | Yes |
| 1953 | 215 | 59% | No |
| 1954 | 31 | 8% | No |
| 1955 | 242 | 66% | No |
| 1956 | 366 | 100% | Yes |
| 1957 | 362 | 99% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 334 | 91% | Yes |
| 1961 | 292 | 80% | No |
| 1962 | 225 | 62% | No |
| 1963 | 245 | 67% | No |
| 1965 | 240 | 66% | No |
| 1966 | 361 | 99% | Yes |
| 1967 | 115 | 32% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 22 April 1967 | Heaslip, CA | monthly rain | 31.8 mm (1.3 in) | 10.5 mm (0.4 in) | 31 years | 50 of 100 (Notable) |
| 21 April 1967 | Heaslip, CA | daily low max (Tie) | 2.2 C (36.0 F) | tie | 30 years | 3 of 100 (Routine) |
| 16 April 1967 | Heaslip, CA | daily high min | 2.2 C (36.0 F) | 0.5 C (0.9 F) | 8 years | 6 of 100 (Routine) |
| 15 April 1967 | Heaslip, CA | daily rain | 7.1 mm (0.28 in) | 1.3 mm (0.05 in) | 30 years | 16 of 100 (Routine) |
| 3 April 1967 | Heaslip, CA | daily low max | -5.6 C (21.9 F) | 1.2 C (2.2 F) | 30 years | 14 of 100 (Routine) |
| 2 April 1967 | Heaslip, CA | daily rain | 2.5 mm (0.10 in) | 1.2 mm (0.05 in) | 24 years | 14 of 100 (Routine) |
| 2 April 1967 | Heaslip, CA | daily high min (Tie) | -1.1 C (30.0 F) | tie | 16 years | 2 of 100 (Routine) |
| 18 March 1967 | Heaslip, CA | daily low max | -15.6 C (3.9 F) | 3.9 C (7.0 F) | 32 years | 19 of 100 (Routine) |
| 18 March 1967 | Heaslip, CA | daily low min | -35.6 C (-32.1 F) | 3.9 C (7.0 F) | 32 years | 17 of 100 (Routine) |
| 17 March 1967 | Heaslip, CA | daily low max | -10.0 C (14.0 F) | 2.2 C (4.0 F) | 8 years | 9 of 100 (Routine) |
| 16 March 1967 | Heaslip, CA | daily low max | -12.2 C (10.0 F) | 6.1 C (11.0 F) | 33 years | 24 of 100 (Routine) |
| 13 March 1967 | Heaslip, CA | daily low max (Tie) | -10.0 C (14.0 F) | tie | 34 years | 3 of 100 (Routine) |
| 12 March 1967 | Heaslip, CA | daily low max | -11.1 C (12.0 F) | 3.3 C (5.9 F) | 29 years | 17 of 100 (Routine) |
| 8 March 1967 | Heaslip, CA | daily low min | -37.2 C (-35.0 F) | 2.2 C (4.0 F) | 8 years | 8 of 100 (Routine) |
| 22 February 1967 | Heaslip, CA | daily snowfall | 7.6 cm (3.0 in) | 7.6 cm (3.0 in) | 37 years | 31 of 100 (Routine) |
| 22 February 1967 | Heaslip, CA | daily rain | 7.6 mm (0.30 in) | 7.6 mm (0.30 in) | 37 years | 20 of 100 (Routine) |
| 18 February 1967 | Heaslip, CA | daily low min | -43.3 C (-45.9 F) | 6.1 C (11.0 F) | 0 years | 11 of 100 (Routine) |
| 17 February 1967 | Heaslip, CA | daily low max | -23.3 C (-9.9 F) | 11.1 C (20.0 F) | 31 years | 30 of 100 (Routine) |
| 17 February 1967 | Heaslip, CA | daily low min | -43.9 C (-47.0 F) | 5.6 C (10.1 F) | 36 years | 21 of 100 (Routine) |
| 12 February 1967 | Heaslip, CA | daily low max | -21.7 C (-7.1 F) | 6.7 C (12.1 F) | 37 years | 25 of 100 (Routine) |
Climate Trend
20 complete years, 1929 to 1966| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1929 | 0.8 C | -0.81 C |
| 1931 | 3.4 C | +1.83 C |
| 1932 | 1.2 C | -0.33 C |
| 1934 | 0.6 C | -1.02 C |
| 1935 | -0.2 C | -1.80 C |
| 1936 | 0.2 C | -1.38 C |
| 1939 | 0.3 C | -1.28 C |
| 1940 | 0.2 C | -1.37 C |
| 1941 | 1.3 C | -0.31 C |
| 1942 | 2.2 C | +0.64 C |
| 1943 | 1.4 C | -0.17 C |
| 1944 | 2.8 C | +1.23 C |
| 1946 | 3.0 C | +1.38 C |
| 1948 | 2.4 C | +0.78 C |
| 1951 | 1.6 C | -0.01 C |
| 1956 | 1.9 C | +0.36 C |
| 1957 | 3.0 C | +1.38 C |
| 1958 | 2.2 C | +0.67 C |
| 1959 | 1.9 C | +0.30 C |
| 1966 | 1.5 C | -0.03 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1928 to 1967| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 1931 | 33.3 C (91.9 F) | 39 |
| Coldest night (TNn) | -50.0 C (-58.0 F) | 1942 | -41.7 C (-43.1 F) | 39 |
| Wettest day (Rx1day) | 109.5 mm (4.3 in) | 1941 | 33.9 mm (1.3 in) | 38 |
| Wettest five days (Rx5day) | 139.7 mm (5.5 in) | 1957 | 40.6 mm (1.6 in) | 38 |
| Longest dry spell (CDD) | 40 days | 1935 | 17 days | 38 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1928 | 8.9 C (48.0 F) |
| 1929 | 32.8 C (91.0 F) |
| 1930 | 32.2 C (90.0 F) |
| 1931 | 37.8 C (100.0 F) |
| 1932 | 31.7 C (89.1 F) |
| 1933 | 32.8 C (91.0 F) |
| 1934 | 33.3 C (91.9 F) |
| 1935 | 33.3 C (91.9 F) |
| 1936 | 37.2 C (99.0 F) |
| 1937 | 35.0 C (95.0 F) |
| 1938 | 32.2 C (90.0 F) |
| 1939 | 33.9 C (93.0 F) |
| 1940 | 33.3 C (91.9 F) |
| 1941 | 32.8 C (91.0 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 33.9 C (93.0 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 32.2 C (90.0 F) |
| 1946 | 32.2 C (90.0 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 35.0 C (95.0 F) |
| 1949 | 34.4 C (93.9 F) |
| 1950 | 32.2 C (90.0 F) |
| 1951 | 31.1 C (88.0 F) |
| 1952 | 32.8 C (91.0 F) |
| 1953 | 34.4 C (93.9 F) |
| 1954 | 1.7 C (35.1 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 33.3 C (91.9 F) |
| 1958 | 31.7 C (89.1 F) |
| 1959 | 33.9 C (93.0 F) |
| 1960 | 32.2 C (90.0 F) |
| 1961 | 30.6 C (87.1 F) |
| 1962 | 30.6 C (87.1 F) |
| 1963 | 33.9 C (93.0 F) |
| 1965 | 30.6 C (87.1 F) |
| 1966 | 33.3 C (91.9 F) |
| 1967 | 13.9 C (57.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1928 | -29.4 C (-20.9 F) |
| 1929 | -40.6 C (-41.1 F) |
| 1930 | -41.1 C (-42.0 F) |
| 1931 | -37.8 C (-36.0 F) |
| 1932 | -38.9 C (-38.0 F) |
| 1933 | -48.3 C (-54.9 F) |
| 1934 | -44.4 C (-47.9 F) |
| 1935 | -46.7 C (-52.1 F) |
| 1936 | -40.0 C (-40.0 F) |
| 1937 | -42.2 C (-44.0 F) |
| 1938 | -41.7 C (-43.1 F) |
| 1939 | -45.6 C (-50.1 F) |
| 1940 | -38.9 C (-38.0 F) |
| 1941 | -41.7 C (-43.1 F) |
| 1942 | -50.0 C (-58.0 F) |
| 1943 | -45.6 C (-50.1 F) |
| 1944 | -38.9 C (-38.0 F) |
| 1945 | -43.3 C (-45.9 F) |
| 1946 | -41.1 C (-42.0 F) |
| 1947 | -41.7 C (-43.1 F) |
| 1948 | -41.1 C (-42.0 F) |
| 1949 | -33.9 C (-29.0 F) |
| 1950 | -46.1 C (-51.0 F) |
| 1951 | -48.9 C (-56.0 F) |
| 1952 | -43.9 C (-47.0 F) |
| 1953 | -37.8 C (-36.0 F) |
| 1954 | -41.1 C (-42.0 F) |
| 1955 | -45.0 C (-49.0 F) |
| 1956 | -35.6 C (-32.1 F) |
| 1957 | -42.8 C (-45.0 F) |
| 1958 | -36.1 C (-33.0 F) |
| 1959 | -38.3 C (-36.9 F) |
| 1960 | -34.4 C (-29.9 F) |
| 1961 | -40.0 C (-40.0 F) |
| 1962 | -46.1 C (-51.0 F) |
| 1963 | -44.4 C (-47.9 F) |
| 1965 | -40.0 C (-40.0 F) |
| 1966 | -44.4 C (-47.9 F) |
| 1967 | -43.9 C (-47.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1928 | 11.4 mm (0.4 in) |
| 1929 | 47.2 mm (1.9 in) |
| 1930 | 27.9 mm (1.1 in) |
| 1931 | 34.0 mm (1.3 in) |
| 1932 | 25.4 mm (1.0 in) |
| 1933 | 50.8 mm (2.0 in) |
| 1934 | 63.5 mm (2.5 in) |
| 1935 | 56.1 mm (2.2 in) |
| 1936 | 40.9 mm (1.6 in) |
| 1937 | 32.3 mm (1.3 in) |
| 1938 | 37.3 mm (1.5 in) |
| 1939 | 70.1 mm (2.8 in) |
| 1940 | 14.5 mm (0.6 in) |
| 1941 | 109.5 mm (4.3 in) |
| 1942 | 21.1 mm (0.8 in) |
| 1943 | 12.7 mm (0.5 in) |
| 1944 | 13.0 mm (0.5 in) |
| 1945 | 73.2 mm (2.9 in) |
| 1946 | 54.4 mm (2.1 in) |
| 1947 | 53.1 mm (2.1 in) |
| 1948 | 14.2 mm (0.6 in) |
| 1949 | 53.8 mm (2.1 in) |
| 1950 | 20.3 mm (0.8 in) |
| 1951 | 25.4 mm (1.0 in) |
| 1952 | 22.9 mm (0.9 in) |
| 1953 | 17.8 mm (0.7 in) |
| 1954 | 35.1 mm (1.4 in) |
| 1955 | 43.9 mm (1.7 in) |
| 1956 | 33.8 mm (1.3 in) |
| 1957 | 98.0 mm (3.9 in) |
| 1958 | 23.6 mm (0.9 in) |
| 1959 | n/a |
| 1960 | 60.2 mm (2.4 in) |
| 1961 | 31.8 mm (1.3 in) |
| 1962 | 12.7 mm (0.5 in) |
| 1963 | 8.1 mm (0.32 in) |
| 1965 | 43.2 mm (1.7 in) |
| 1966 | 45.5 mm (1.8 in) |
| 1967 | 31.8 mm (1.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1928 | 17.7 mm (0.7 in) |
| 1929 | 91.6 mm (3.6 in) |
| 1930 | 70.3 mm (2.8 in) |
| 1931 | 57.4 mm (2.3 in) |
| 1932 | 33.3 mm (1.3 in) |
| 1933 | 82.5 mm (3.2 in) |
| 1934 | 63.5 mm (2.5 in) |
| 1935 | 66.6 mm (2.6 in) |
| 1936 | 53.9 mm (2.1 in) |
| 1937 | 32.3 mm (1.3 in) |
| 1938 | 38.8 mm (1.5 in) |
| 1939 | 89.1 mm (3.5 in) |
| 1940 | 26.4 mm (1.0 in) |
| 1941 | 109.5 mm (4.3 in) |
| 1942 | 21.1 mm (0.8 in) |
| 1943 | 16.5 mm (0.6 in) |
| 1944 | 16.0 mm (0.6 in) |
| 1945 | 81.1 mm (3.2 in) |
| 1946 | 73.9 mm (2.9 in) |
| 1947 | 65.3 mm (2.6 in) |
| 1948 | 24.6 mm (1.0 in) |
| 1949 | 88.1 mm (3.5 in) |
| 1950 | 25.4 mm (1.0 in) |
| 1951 | 37.6 mm (1.5 in) |
| 1952 | 38.1 mm (1.5 in) |
| 1953 | 23.6 mm (0.9 in) |
| 1954 | 40.4 mm (1.6 in) |
| 1955 | 46.2 mm (1.8 in) |
| 1956 | 40.7 mm (1.6 in) |
| 1957 | 139.7 mm (5.5 in) |
| 1958 | 36.6 mm (1.4 in) |
| 1959 | n/a |
| 1960 | 110.7 mm (4.4 in) |
| 1961 | 38.9 mm (1.5 in) |
| 1962 | 17.8 mm (0.7 in) |
| 1963 | 19.6 mm (0.8 in) |
| 1965 | 66.8 mm (2.6 in) |
| 1966 | 59.2 mm (2.3 in) |
| 1967 | 39.8 mm (1.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1928 | 13 days |
| 1929 | 18 days |
| 1930 | 14 days |
| 1931 | 12 days |
| 1932 | 22 days |
| 1933 | 17 days |
| 1934 | 16 days |
| 1935 | 40 days |
| 1936 | 18 days |
| 1937 | 22 days |
| 1938 | 20 days |
| 1939 | 20 days |
| 1940 | 22 days |
| 1941 | 26 days |
| 1942 | 22 days |
| 1943 | 19 days |
| 1944 | 14 days |
| 1945 | 13 days |
| 1946 | 19 days |
| 1947 | 16 days |
| 1948 | 19 days |
| 1949 | 15 days |
| 1950 | 20 days |
| 1951 | 12 days |
| 1952 | 14 days |
| 1953 | 14 days |
| 1954 | 13 days |
| 1955 | 17 days |
| 1956 | 18 days |
| 1957 | 16 days |
| 1958 | 33 days |
| 1959 | n/a |
| 1960 | 19 days |
| 1961 | 27 days |
| 1962 | 8 days |
| 1963 | 12 days |
| 1965 | 9 days |
| 1966 | 12 days |
| 1967 | 10 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
20 years with a frostAcross 20 years with a frost, the median last spring frost at Heaslip falls on 14 June and the median first autumn frost on 27 August, which leaves a median of 79 days between them.
| Measure | Median, all years | Earliest period | Recent period (1929 to 1966) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 June | n/a | 14 June | n/a | n/a |
| First autumn frost | 27 August | n/a | 27 August | n/a | n/a |
| Growing days | 79 days | n/a | 79 days | n/a | n/a |
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.
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).