Coniston Weather Records (CA006061847)
Record envelope, standing records and threshold days for Coniston (CA006061847), Ontario, Canada, with 56 years of record.
Key Facts for Coniston
- Coniston (CA006061847) is a weather station in Ontario, Canada at 46.47 latitude and -80.82 longitude, 237 m (778 ft) above sea level.
- The station reports from 1921 to 1976, 56 years of record.
- 1,464 records set at Coniston still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Coniston set a daily record precipitation of 10.2 mm (0.4 in) on 31 January 1976.
About the Station
- Location: Ontario, Canada, 46.47 latitude, -80.82 longitude.
- Elevation: 237 m (778 ft).
- Period of record: 1921 to 1976, 56 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 | 10.0 C (50.0 F) | -43.3 C (-45.9 F) | n/a | n/a |
| Feb | 10.0 C (50.0 F) | -43.9 C (-47.0 F) | n/a | n/a |
| Mar | 23.9 C (75.0 F) | -40.6 C (-41.1 F) | n/a | n/a |
| Apr | 29.4 C (84.9 F) | -27.8 C (-18.0 F) | n/a | n/a |
| May | 35.6 C (96.1 F) | -10.0 C (14.0 F) | n/a | n/a |
| Jun | 35.0 C (95.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Jul | 41.1 C (106.0 F) | -0.6 C (30.9 F) | n/a | n/a |
| Aug | 35.6 C (96.1 F) | 1.7 C (35.1 F) | n/a | n/a |
| Sep | 34.4 C (93.9 F) | -7.8 C (18.0 F) | n/a | n/a |
| Oct | 27.8 C (82.0 F) | -13.3 C (8.1 F) | n/a | n/a |
| Nov | 20.0 C (68.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Dec | 15.6 C (60.1 F) | -48.3 C (-54.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1921 | 31 |
| 1922 | 26 |
| 1923 | 61 |
| 1924 | 31 |
| 1925 | 36 |
| 1926 | 39 |
| 1927 | 25 |
| 1928 | 33 |
| 1929 | 40 |
| 1930 | 39 |
| 1931 | 35 |
| 1932 | 27 |
| 1933 | 38 |
| 1934 | 46 |
| 1935 | 20 |
| 1936 | 44 |
| 1937 | 21 |
| 1938 | 28 |
| 1939 | 17 |
| 1940 | 12 |
| 1941 | 32 |
| 1942 | 27 |
| 1943 | 28 |
| 1944 | 33 |
| 1945 | 46 |
| 1946 | 45 |
| 1947 | 42 |
| 1948 | 27 |
| 1949 | 29 |
| 1950 | 23 |
| 1951 | 30 |
| 1952 | 10 |
| 1953 | 13 |
| 1954 | 15 |
| 1955 | 16 |
| 1956 | 20 |
| 1957 | 23 |
| 1958 | 21 |
| 1959 | 21 |
| 1960 | 15 |
| 1961 | 17 |
| 1962 | 21 |
| 1963 | 29 |
| 1964 | 21 |
| 1965 | 24 |
| 1966 | 15 |
| 1967 | 23 |
| 1968 | 23 |
| 1969 | 14 |
| 1970 | 10 |
| 1971 | 13 |
| 1972 | 22 |
| 1973 | 24 |
| 1974 | 18 |
| 1975 | 24 |
| 1976 | 1 |
All-Time Record Progression
1 new records| Date | Kind | Detail |
|---|---|---|
| 1955-07-31 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
Wettest Day of Each Month
Sep: 123.2 mm (4.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 48.3 mm (1.9 in) | 21 January 1974 |
| Feb | 43.2 mm (1.7 in) | 5 February 1938 |
| Mar | 48.3 mm (1.9 in) | 1 March 1954 |
| Apr | 41.9 mm (1.6 in) | 2 April 1923 |
| May | 40.6 mm (1.6 in) | 21 May 1921 |
| Jun | 54.1 mm (2.1 in) | 26 June 1930 |
| Jul | 110.5 mm (4.4 in) | 6 July 1935 |
| Aug | 45.2 mm (1.8 in) | 31 August 1943 |
| Sep | 123.2 mm (4.9 in) | 10 September 1937 |
| Oct | 70.9 mm (2.8 in) | 15 October 1954 |
| Nov | 61.7 mm (2.4 in) | 7 November 1924 |
| Dec | 66.0 mm (2.6 in) | 16 December 1937 |
Period of Record Coverage
1921 to 1976| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1921 | 274 | 75% | No |
| 1922 | 363 | 99% | Yes |
| 1923 | 363 | 99% | Yes |
| 1924 | 364 | 99% | 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 | 334 | 92% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 354 | 97% | Yes |
| 1936 | 354 | 97% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 318 | 87% | No |
| 1939 | 364 | 100% | Yes |
| 1940 | 363 | 99% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 201 | 55% | No |
| 1953 | 60 | 16% | No |
| 1954 | 241 | 66% | No |
| 1955 | 148 | 41% | No |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 345 | 95% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 364 | 99% | Yes |
| 1969 | 358 | 98% | Yes |
| 1970 | 332 | 91% | Yes |
| 1971 | 337 | 92% | Yes |
| 1972 | 358 | 98% | Yes |
| 1973 | 328 | 90% | No |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 31 | 8% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 January 1976 | Coniston, CA | daily rain | 10.2 mm (0.4 in) | 0.3 mm (0.01 in) | 29 years | 13 of 100 (Routine) |
| 31 January 1976 | Coniston, CA | daily snowfall | 10.2 cm (4.0 in) | 0.3 cm (0.1 in) | 29 years | 13 of 100 (Routine) |
| 23 January 1976 | Coniston, CA | daily low max | -26.1 C (-15.0 F) | 3.3 C (5.9 F) | 28 years | 17 of 100 (Routine) |
| 5 January 1976 | Coniston, CA | daily low min (Tie) | -35.0 C (-31.0 F) | tie | 16 years | 2 of 100 (Routine) |
| 2 January 1976 | Coniston, CA | daily rain | 11.4 mm (0.4 in) | 1.2 mm (0.05 in) | 40 years | 19 of 100 (Routine) |
| 2 January 1976 | Coniston, CA | daily snowfall | 11.4 cm (4.5 in) | 1.2 cm (0.5 in) | 40 years | 19 of 100 (Routine) |
| 19 December 1975 | Coniston, CA | daily low min | -32.2 C (-26.0 F) | 2.2 C (4.0 F) | 52 years | 22 of 100 (Routine) |
| 19 December 1975 | Coniston, CA | daily low max | -20.0 C (-4.0 F) | 0.6 C (1.1 F) | 24 years | 12 of 100 (Routine) |
| 18 December 1975 | Coniston, CA | daily low max | -21.7 C (-7.1 F) | 3.9 C (7.0 F) | 32 years | 20 of 100 (Routine) |
| 14 December 1975 | Coniston, CA | daily high max | 10.0 C (50.0 F) | 5.6 C (10.1 F) | 52 years | 28 of 100 (Routine) |
| 14 December 1975 | Coniston, CA | daily rain | 6.6 mm (0.26 in) | 0.5 mm (0.02 in) | 21 years | 11 of 100 (Routine) |
| 13 December 1975 | Coniston, CA | daily high max | 7.2 C (45.0 F) | 1.1 C (2.0 F) | 6 years | 8 of 100 (Routine) |
| 30 November 1975 | Coniston, CA | daily high max | 12.2 C (54.0 F) | 3.3 C (5.9 F) | 42 years | 22 of 100 (Routine) |
| 29 November 1975 | Coniston, CA | daily rain | 25.7 mm (1.0 in) | 13.5 mm (0.5 in) | 20 years | 29 of 100 (Routine) |
| 10 November 1975 | Coniston, CA | daily high max | 18.3 C (64.9 F) | 2.7 C (4.9 F) | 44 years | 22 of 100 (Routine) |
| 9 November 1975 | Coniston, CA | daily high min (Tie) | 5.0 C (41.0 F) | tie | 12 years | 2 of 100 (Routine) |
| 8 November 1975 | Coniston, CA | monthly high min | 12.2 C (54.0 F) | 1.1 C (2.0 F) | 19 years | 21 of 100 (Routine) |
| 8 November 1975 | Coniston, CA | daily high max | 15.6 C (60.1 F) | 0.6 C (1.1 F) | 29 years | 14 of 100 (Routine) |
| 7 November 1975 | Coniston, CA | daily high min | 10.6 C (51.1 F) | 3.9 C (7.0 F) | 12 years | 14 of 100 (Routine) |
| 7 September 1975 | Coniston, CA | daily low max | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 25 years | 13 of 100 (Routine) |
Climate Trend
42 complete years, 1922 to 1975| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1922 | 4.0 C | -0.37 C |
| 1923 | 2.8 C | -1.60 C |
| 1924 | 2.5 C | -1.90 C |
| 1925 | 3.4 C | -0.95 C |
| 1926 | 2.2 C | -2.17 C |
| 1927 | 4.0 C | -0.35 C |
| 1928 | 3.0 C | -1.42 C |
| 1929 | 3.3 C | -1.07 C |
| 1930 | 5.3 C | +0.91 C |
| 1932 | 4.9 C | +0.46 C |
| 1933 | 4.3 C | -0.10 C |
| 1934 | 3.4 C | -1.03 C |
| 1935 | 3.9 C | -0.47 C |
| 1937 | 5.2 C | +0.84 C |
| 1939 | 4.6 C | +0.21 C |
| 1940 | 4.2 C | -0.21 C |
| 1941 | 5.1 C | +0.74 C |
| 1942 | 5.0 C | +0.61 C |
| 1944 | 5.8 C | +1.41 C |
| 1945 | 4.7 C | +0.27 C |
| 1946 | 5.6 C | +1.23 C |
| 1947 | 5.5 C | +1.09 C |
| 1948 | 5.8 C | +1.37 C |
| 1949 | 6.0 C | +1.65 C |
| 1950 | 4.5 C | +0.09 C |
| 1951 | 4.5 C | +0.09 C |
| 1956 | 4.4 C | +0.04 C |
| 1957 | 5.6 C | +1.22 C |
| 1958 | 5.0 C | +0.64 C |
| 1959 | 4.3 C | -0.10 C |
| 1960 | 4.6 C | +0.21 C |
| 1961 | 5.1 C | +0.75 C |
| 1962 | 4.4 C | +0.01 C |
| 1963 | 4.0 C | -0.35 C |
| 1964 | 4.7 C | +0.30 C |
| 1965 | 3.7 C | -0.65 C |
| 1967 | 3.8 C | -0.64 C |
| 1968 | 4.5 C | +0.15 C |
| 1969 | 4.7 C | +0.32 C |
| 1972 | 3.1 C | -1.29 C |
| 1974 | 3.9 C | -0.51 C |
| 1975 | 5.1 C | +0.69 C |
The fitted trend in annual mean temperature here over 1922 to 1975 is 0.18 C (0.00 to 0.35) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.32 F (0.00 to 0.63) 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 | 0.18 C (0.00 to 0.35) per decade | 0.32 F (0.00 to 0.63) per decade | 1922 to 1975 | 42 | Not clearly different from zero |
| Mean daily maximum | -0.1 C (-0.3 to 0.1) per decade | -0.2 F (-0.6 to 0.2) per decade | 1922 to 1975 | 42 | Not clearly different from zero |
| Mean daily minimum | 0.5 C (0.3 to 0.6) per decade | 0.8 F (0.6 to 1.1) per decade | 1922 to 1975 | 42 | 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
1921 to 1976| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1936 | 32.8 C (91.0 F) | 56 |
| Coldest night (TNn) | -48.3 C (-54.9 F) | 1933 | -37.2 C (-35.0 F) | 56 |
| Wettest day (Rx1day) | 123.2 mm (4.9 in) | 1937 | 41.4 mm (1.6 in) | 56 |
| Wettest five days (Rx5day) | 140.3 mm (5.5 in) | 1937 | 65.6 mm (2.6 in) | 56 |
| Longest dry spell (CDD) | 34 days | 1958 | 17 days | 56 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1921 | 36.1 C (97.0 F) |
| 1922 | 31.7 C (89.1 F) |
| 1923 | 31.7 C (89.1 F) |
| 1924 | 28.9 C (84.0 F) |
| 1925 | 32.2 C (90.0 F) |
| 1926 | 30.0 C (86.0 F) |
| 1927 | 33.9 C (93.0 F) |
| 1928 | 32.2 C (90.0 F) |
| 1929 | 32.8 C (91.0 F) |
| 1930 | 35.6 C (96.1 F) |
| 1931 | 37.2 C (99.0 F) |
| 1932 | 32.2 C (90.0 F) |
| 1933 | 33.9 C (93.0 F) |
| 1934 | 32.8 C (91.0 F) |
| 1935 | 34.4 C (93.9 F) |
| 1936 | 41.1 C (106.0 F) |
| 1937 | 36.1 C (97.0 F) |
| 1938 | 34.4 C (93.9 F) |
| 1939 | 35.6 C (96.1 F) |
| 1940 | 33.9 C (93.0 F) |
| 1941 | 33.9 C (93.0 F) |
| 1942 | 32.8 C (91.0 F) |
| 1943 | 34.4 C (93.9 F) |
| 1944 | 35.0 C (95.0 F) |
| 1945 | 32.8 C (91.0 F) |
| 1946 | 32.8 C (91.0 F) |
| 1947 | 33.9 C (93.0 F) |
| 1948 | 34.4 C (93.9 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 30.6 C (87.1 F) |
| 1952 | 32.2 C (90.0 F) |
| 1953 | 17.8 C (64.0 F) |
| 1954 | 31.1 C (88.0 F) |
| 1955 | 33.9 C (93.0 F) |
| 1956 | 33.3 C (91.9 F) |
| 1957 | 32.8 C (91.0 F) |
| 1958 | 30.0 C (86.0 F) |
| 1959 | 31.1 C (88.0 F) |
| 1960 | 31.1 C (88.0 F) |
| 1961 | 31.7 C (89.1 F) |
| 1962 | 32.2 C (90.0 F) |
| 1963 | 34.4 C (93.9 F) |
| 1964 | 32.2 C (90.0 F) |
| 1965 | 30.0 C (86.0 F) |
| 1966 | 33.9 C (93.0 F) |
| 1967 | 30.0 C (86.0 F) |
| 1968 | 32.2 C (90.0 F) |
| 1969 | 31.7 C (89.1 F) |
| 1970 | 30.0 C (86.0 F) |
| 1971 | 31.7 C (89.1 F) |
| 1972 | 30.0 C (86.0 F) |
| 1973 | 31.1 C (88.0 F) |
| 1974 | 31.7 C (89.1 F) |
| 1975 | 38.3 C (100.9 F) |
| 1976 | 0.6 C (33.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1921 | -40.0 C (-40.0 F) |
| 1922 | -41.1 C (-42.0 F) |
| 1923 | -43.3 C (-45.9 F) |
| 1924 | -43.3 C (-45.9 F) |
| 1925 | -38.3 C (-36.9 F) |
| 1926 | -40.6 C (-41.1 F) |
| 1927 | -39.4 C (-38.9 F) |
| 1928 | -43.3 C (-45.9 F) |
| 1929 | -37.2 C (-35.0 F) |
| 1930 | -42.2 C (-44.0 F) |
| 1931 | -37.2 C (-35.0 F) |
| 1932 | -32.2 C (-26.0 F) |
| 1933 | -48.3 C (-54.9 F) |
| 1934 | -42.8 C (-45.0 F) |
| 1935 | -42.2 C (-44.0 F) |
| 1936 | -38.9 C (-38.0 F) |
| 1937 | -36.7 C (-34.1 F) |
| 1938 | -40.6 C (-41.1 F) |
| 1939 | -34.4 C (-29.9 F) |
| 1940 | -33.9 C (-29.0 F) |
| 1941 | -37.2 C (-35.0 F) |
| 1942 | -42.8 C (-45.0 F) |
| 1943 | -38.9 C (-38.0 F) |
| 1944 | -30.6 C (-23.1 F) |
| 1945 | -40.6 C (-41.1 F) |
| 1946 | -35.0 C (-31.0 F) |
| 1947 | -34.4 C (-29.9 F) |
| 1948 | -37.2 C (-35.0 F) |
| 1949 | -31.1 C (-24.0 F) |
| 1950 | -40.6 C (-41.1 F) |
| 1951 | -43.9 C (-47.0 F) |
| 1952 | -38.9 C (-38.0 F) |
| 1953 | -29.4 C (-20.9 F) |
| 1954 | -37.2 C (-35.0 F) |
| 1955 | -36.7 C (-34.1 F) |
| 1956 | -31.7 C (-25.1 F) |
| 1957 | -36.7 C (-34.1 F) |
| 1958 | -35.0 C (-31.0 F) |
| 1959 | -37.2 C (-35.0 F) |
| 1960 | -29.4 C (-20.9 F) |
| 1961 | -28.9 C (-20.0 F) |
| 1962 | -36.7 C (-34.1 F) |
| 1963 | -38.9 C (-38.0 F) |
| 1964 | -32.8 C (-27.0 F) |
| 1965 | -35.6 C (-32.1 F) |
| 1966 | -32.2 C (-26.0 F) |
| 1967 | -42.8 C (-45.0 F) |
| 1968 | -40.6 C (-41.1 F) |
| 1969 | -31.1 C (-24.0 F) |
| 1970 | -39.4 C (-38.9 F) |
| 1971 | -37.2 C (-35.0 F) |
| 1972 | -35.6 C (-32.1 F) |
| 1973 | -36.1 C (-33.0 F) |
| 1974 | -31.1 C (-24.0 F) |
| 1975 | -33.3 C (-27.9 F) |
| 1976 | -36.1 C (-33.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1921 | 46.0 mm (1.8 in) |
| 1922 | 25.9 mm (1.0 in) |
| 1923 | 41.9 mm (1.6 in) |
| 1924 | 61.7 mm (2.4 in) |
| 1925 | 27.2 mm (1.1 in) |
| 1926 | 39.4 mm (1.6 in) |
| 1927 | 25.4 mm (1.0 in) |
| 1928 | 50.3 mm (2.0 in) |
| 1929 | 39.1 mm (1.5 in) |
| 1930 | 54.1 mm (2.1 in) |
| 1931 | 55.4 mm (2.2 in) |
| 1932 | 49.5 mm (1.9 in) |
| 1933 | 26.2 mm (1.0 in) |
| 1934 | 46.7 mm (1.8 in) |
| 1935 | 110.5 mm (4.4 in) |
| 1936 | 38.1 mm (1.5 in) |
| 1937 | 123.2 mm (4.9 in) |
| 1938 | 52.8 mm (2.1 in) |
| 1939 | 35.6 mm (1.4 in) |
| 1940 | 33.0 mm (1.3 in) |
| 1941 | 88.9 mm (3.5 in) |
| 1942 | 30.0 mm (1.2 in) |
| 1943 | 45.2 mm (1.8 in) |
| 1944 | 25.1 mm (1.0 in) |
| 1945 | 40.9 mm (1.6 in) |
| 1946 | 41.4 mm (1.6 in) |
| 1947 | 60.5 mm (2.4 in) |
| 1948 | 36.6 mm (1.4 in) |
| 1949 | 29.5 mm (1.2 in) |
| 1950 | 42.4 mm (1.7 in) |
| 1951 | 39.4 mm (1.6 in) |
| 1952 | 27.2 mm (1.1 in) |
| 1953 | 45.7 mm (1.8 in) |
| 1954 | 70.9 mm (2.8 in) |
| 1955 | 46.2 mm (1.8 in) |
| 1956 | 50.8 mm (2.0 in) |
| 1957 | 41.4 mm (1.6 in) |
| 1958 | 30.5 mm (1.2 in) |
| 1959 | 30.0 mm (1.2 in) |
| 1960 | 54.1 mm (2.1 in) |
| 1961 | 51.6 mm (2.0 in) |
| 1962 | 30.7 mm (1.2 in) |
| 1963 | 42.7 mm (1.7 in) |
| 1964 | 29.2 mm (1.1 in) |
| 1965 | 40.4 mm (1.6 in) |
| 1966 | 31.2 mm (1.2 in) |
| 1967 | 37.8 mm (1.5 in) |
| 1968 | 42.9 mm (1.7 in) |
| 1969 | 31.0 mm (1.2 in) |
| 1970 | 47.5 mm (1.9 in) |
| 1971 | 43.2 mm (1.7 in) |
| 1972 | 45.0 mm (1.8 in) |
| 1973 | 39.6 mm (1.6 in) |
| 1974 | 48.3 mm (1.9 in) |
| 1975 | 31.2 mm (1.2 in) |
| 1976 | 11.4 mm (0.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1921 | 54.1 mm (2.1 in) |
| 1922 | 69.1 mm (2.7 in) |
| 1923 | 62.8 mm (2.5 in) |
| 1924 | 77.7 mm (3.1 in) |
| 1925 | 39.1 mm (1.5 in) |
| 1926 | 58.2 mm (2.3 in) |
| 1927 | 60.8 mm (2.4 in) |
| 1928 | 69.8 mm (2.7 in) |
| 1929 | 86.1 mm (3.4 in) |
| 1930 | 96.3 mm (3.8 in) |
| 1931 | 78.0 mm (3.1 in) |
| 1932 | 73.9 mm (2.9 in) |
| 1933 | 41.7 mm (1.6 in) |
| 1934 | 64.7 mm (2.5 in) |
| 1935 | 113.3 mm (4.5 in) |
| 1936 | 49.6 mm (2.0 in) |
| 1937 | 140.3 mm (5.5 in) |
| 1938 | 106.5 mm (4.2 in) |
| 1939 | 56.3 mm (2.2 in) |
| 1940 | 55.9 mm (2.2 in) |
| 1941 | 104.7 mm (4.1 in) |
| 1942 | 49.5 mm (1.9 in) |
| 1943 | 84.0 mm (3.3 in) |
| 1944 | 53.1 mm (2.1 in) |
| 1945 | 84.9 mm (3.3 in) |
| 1946 | 43.4 mm (1.7 in) |
| 1947 | 106.2 mm (4.2 in) |
| 1948 | 64.0 mm (2.5 in) |
| 1949 | 41.2 mm (1.6 in) |
| 1950 | 68.5 mm (2.7 in) |
| 1951 | 84.4 mm (3.3 in) |
| 1952 | 47.3 mm (1.9 in) |
| 1953 | 55.1 mm (2.2 in) |
| 1954 | 116.6 mm (4.6 in) |
| 1955 | 80.7 mm (3.2 in) |
| 1956 | 62.5 mm (2.5 in) |
| 1957 | 84.9 mm (3.3 in) |
| 1958 | 59.6 mm (2.3 in) |
| 1959 | 51.8 mm (2.0 in) |
| 1960 | 66.3 mm (2.6 in) |
| 1961 | 90.0 mm (3.5 in) |
| 1962 | 36.3 mm (1.4 in) |
| 1963 | 55.6 mm (2.2 in) |
| 1964 | 45.0 mm (1.8 in) |
| 1965 | 85.9 mm (3.4 in) |
| 1966 | 54.5 mm (2.1 in) |
| 1967 | 68.5 mm (2.7 in) |
| 1968 | 64.8 mm (2.6 in) |
| 1969 | 68.6 mm (2.7 in) |
| 1970 | 78.2 mm (3.1 in) |
| 1971 | 53.1 mm (2.1 in) |
| 1972 | 67.9 mm (2.7 in) |
| 1973 | 76.8 mm (3.0 in) |
| 1974 | 71.2 mm (2.8 in) |
| 1975 | 45.9 mm (1.8 in) |
| 1976 | 29.1 mm (1.1 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1921 | 14 days |
| 1922 | 18 days |
| 1923 | 15 days |
| 1924 | 26 days |
| 1925 | 22 days |
| 1926 | 14 days |
| 1927 | 15 days |
| 1928 | 13 days |
| 1929 | 18 days |
| 1930 | 16 days |
| 1931 | 21 days |
| 1932 | 12 days |
| 1933 | 13 days |
| 1934 | 10 days |
| 1935 | 18 days |
| 1936 | 20 days |
| 1937 | 14 days |
| 1938 | 13 days |
| 1939 | 20 days |
| 1940 | 18 days |
| 1941 | 26 days |
| 1942 | 16 days |
| 1943 | 17 days |
| 1944 | 21 days |
| 1945 | 14 days |
| 1946 | 14 days |
| 1947 | 17 days |
| 1948 | 22 days |
| 1949 | 14 days |
| 1950 | 15 days |
| 1951 | 12 days |
| 1952 | 17 days |
| 1953 | 19 days |
| 1954 | 14 days |
| 1955 | 12 days |
| 1956 | 18 days |
| 1957 | 15 days |
| 1958 | 34 days |
| 1959 | 16 days |
| 1960 | 18 days |
| 1961 | 18 days |
| 1962 | 17 days |
| 1963 | 25 days |
| 1964 | 13 days |
| 1965 | 19 days |
| 1966 | 12 days |
| 1967 | 21 days |
| 1968 | 10 days |
| 1969 | 23 days |
| 1970 | 15 days |
| 1971 | 13 days |
| 1972 | 18 days |
| 1973 | 18 days |
| 1974 | 13 days |
| 1975 | 20 days |
| 1976 | 4 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 Coniston falls on 23 May and the median first autumn frost on 26 September, which leaves a median of 129 days between them.
Fitted over all years, the growing season changes by +5.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1935 to 1975) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 23 May | n/a | 19 May | n/a | -3.5 days per decade |
| First autumn frost | 26 September | n/a | 27 September | n/a | +2.2 days per decade |
| Growing days | 129 days | n/a | 134 days | n/a | +5.7 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
53 years, 1922 to 1975A day with at least 40.1 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 116.7 mm (4.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 40.1 mm (1.6 in) | |
| 5 years | 54.0 mm (2.1 in) | |
| 10 years | 65.3 mm (2.6 in) | |
| 25 years | 82.8 mm (3.3 in) | |
| 50 years | 98.5 mm (3.9 in) | |
| 100 years | 116.7 mm (4.6 in) | Longer than the 53 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, 53 years of values from 1922 to 1975.
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: 123.2 mm (4.9 in) in 1937; 110.5 mm (4.4 in) in 1935; 88.9 mm (3.5 in) in 1941.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Coniston, at 1935 and 1959. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1935 ran 0.6 C (1.1 F) higher than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1959 ran 0.5 C (0.8 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1935 | +0.6 | +1.1 | possible | 5 |
| 1959 | -0.4 | -0.8 | 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).