Preston Sugar Factory Weather Records (USC00107353)
Record envelope, standing records and threshold days for Preston Sugar Factory (USC00107353), Idaho, United States, with 60 years of record.
Key Facts for Preston Sugar Factory
- Preston Sugar Factory (USC00107353) is a weather station in Idaho, United States at 42.07 latitude and -111.85 longitude, 1,440 m (4,724 ft) above sea level.
- The station reports from 1921 to 1980, 60 years of record.
- 1,464 records set at Preston Sugar Factory still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Preston Sugar Factory set a daily record precipitation of 24.6 mm (1.0 in) on 14 January 1980.
About the Station
- Location: Idaho, United States, 42.07 latitude, -111.85 longitude.
- Elevation: 1,440 m (4,724 ft).
- Period of record: 1921 to 1980, 60 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 | 11.7 C (53.1 F) | -37.8 C (-36.0 F) | n/a | n/a |
| Feb | 17.8 C (64.0 F) | -35.6 C (-32.1 F) | n/a | n/a |
| Mar | 22.2 C (72.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Apr | 28.3 C (82.9 F) | -13.9 C (7.0 F) | n/a | n/a |
| May | 33.3 C (91.9 F) | -5.6 C (21.9 F) | n/a | n/a |
| Jun | 38.9 C (102.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Jul | 40.6 C (105.1 F) | 0.6 C (33.1 F) | n/a | n/a |
| Aug | 38.9 C (102.0 F) | -0.6 C (30.9 F) | n/a | n/a |
| Sep | 36.7 C (98.1 F) | -10.0 C (14.0 F) | n/a | n/a |
| Oct | 30.6 C (87.1 F) | -12.8 C (9.0 F) | n/a | n/a |
| Nov | 20.6 C (69.1 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Dec | 16.1 C (61.0 F) | -35.0 C (-31.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1921 | 2 |
| 1922 | 40 |
| 1923 | 29 |
| 1924 | 25 |
| 1925 | 31 |
| 1926 | 32 |
| 1927 | 34 |
| 1928 | 42 |
| 1929 | 34 |
| 1930 | 42 |
| 1931 | 41 |
| 1932 | 37 |
| 1933 | 37 |
| 1934 | 51 |
| 1935 | 26 |
| 1936 | 36 |
| 1937 | 32 |
| 1938 | 28 |
| 1939 | 42 |
| 1940 | 24 |
| 1941 | 16 |
| 1942 | 25 |
| 1943 | 31 |
| 1944 | 12 |
| 1945 | 30 |
| 1946 | 17 |
| 1947 | 25 |
| 1948 | 21 |
| 1949 | 39 |
| 1950 | 38 |
| 1951 | 21 |
| 1952 | 16 |
| 1953 | 44 |
| 1954 | 38 |
| 1955 | 40 |
| 1956 | 27 |
| 1957 | 15 |
| 1958 | 31 |
| 1959 | 27 |
| 1960 | 31 |
| 1961 | 19 |
| 1962 | 23 |
| 1963 | 23 |
| 1964 | 33 |
| 1974 | 10 |
| 1975 | 35 |
| 1976 | 20 |
| 1977 | 24 |
| 1978 | 40 |
| 1979 | 27 |
| 1980 | 1 |
Wettest Day of Each Month
Dec: 52.8 mm (2.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 52.3 mm (2.1 in) | 30 January 1923 |
| Feb | 26.9 mm (1.1 in) | 2 February 1936 |
| Mar | 35.8 mm (1.4 in) | 29 March 1924 |
| Apr | 38.6 mm (1.5 in) | 21 April 1947 |
| May | 33.3 mm (1.3 in) | 19 May 1957 |
| Jun | 50.8 mm (2.0 in) | 7 June 1964 |
| Jul | 51.8 mm (2.0 in) | 11 July 1930 |
| Aug | 37.3 mm (1.5 in) | 10 August 1941 |
| Sep | 48.8 mm (1.9 in) | 18 September 1947 |
| Oct | 38.4 mm (1.5 in) | 30 October 1963 |
| Nov | 29.0 mm (1.1 in) | 16 November 1954 |
| Dec | 52.8 mm (2.1 in) | 21 December 1921 |
Period of Record Coverage
1921 to 1980| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1921 | 36 | 10% | No |
| 1922 | 322 | 88% | No |
| 1923 | 261 | 72% | No |
| 1924 | 134 | 37% | No |
| 1925 | 364 | 100% | Yes |
| 1926 | 357 | 98% | Yes |
| 1927 | 346 | 95% | Yes |
| 1928 | 363 | 99% | Yes |
| 1929 | 362 | 99% | Yes |
| 1930 | 357 | 98% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 361 | 99% | 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 | 345 | 94% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 356 | 98% | Yes |
| 1948 | 332 | 91% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 363 | 99% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 364 | 99% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 274 | 75% | No |
| 1974 | 213 | 58% | No |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 303 | 83% | No |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 13 | 4% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 January 1980 | Preston Sugar Factory, US | daily rain | 24.6 mm (1.0 in) | 7.3 mm (0.29 in) | 26 years | 20 of 100 (Routine) |
| 14 January 1980 | Preston Sugar Factory, US | daily high min | 0.6 C (33.1 F) | 0.6 C (1.1 F) | 26 years | 14 of 100 (Routine) |
| 13 January 1980 | Preston Sugar Factory, US | daily rain | 8.9 mm (0.35 in) | 1.0 mm (0.04 in) | 28 years | 16 of 100 (Routine) |
| 12 January 1980 | Preston Sugar Factory, US | daily snowfall | 17.8 cm (7.0 in) | 13.0 cm (5.1 in) | 49 years | 50 of 100 (Notable) |
| 12 January 1980 | Preston Sugar Factory, US | daily rain | 20.3 mm (0.8 in) | 9.1 mm (0.36 in) | 48 years | 20 of 100 (Routine) |
| 10 January 1980 | Preston Sugar Factory, US | daily rain | 21.1 mm (0.8 in) | 16.8 mm (0.7 in) | 40 years | 20 of 100 (Routine) |
| 1 December 1979 | Preston Sugar Factory, US | daily low max | -8.9 C (16.0 F) | 3.3 C (5.9 F) | 48 years | 25 of 100 (Routine) |
| 1 December 1979 | Preston Sugar Factory, US | daily low min | -23.9 C (-11.0 F) | 2.8 C (5.0 F) | 48 years | 23 of 100 (Routine) |
| 30 November 1979 | Preston Sugar Factory, US | daily low min | -24.4 C (-11.9 F) | 2.7 C (4.9 F) | 48 years | 24 of 100 (Routine) |
| 30 November 1979 | Preston Sugar Factory, US | daily low max | -8.3 C (17.1 F) | 0.5 C (0.9 F) | 4 years | 6 of 100 (Routine) |
| 29 November 1979 | Preston Sugar Factory, US | daily low min | -25.6 C (-14.1 F) | 7.3 C (13.1 F) | 48 years | 33 of 100 (Routine) |
| 29 November 1979 | Preston Sugar Factory, US | daily low max | -8.3 C (17.1 F) | 3.3 C (5.9 F) | 48 years | 24 of 100 (Routine) |
| 28 November 1979 | Preston Sugar Factory, US | daily low min | -22.8 C (-9.0 F) | 3.4 C (6.1 F) | 2 years | 11 of 100 (Routine) |
| 26 November 1979 | Preston Sugar Factory, US | daily snowfall | 10.2 cm (4.0 in) | 3.8 cm (1.5 in) | 44 years | 26 of 100 (Routine) |
| 25 November 1979 | Preston Sugar Factory, US | daily snowfall | 7.6 cm (3.0 in) | 5.6 cm (2.2 in) | 4 years | 18 of 100 (Routine) |
| 23 November 1979 | Preston Sugar Factory, US | daily snowfall | 2.5 cm (1.0 in) | 1.2 cm (0.5 in) | 48 years | 20 of 100 (Routine) |
| 1 November 1979 | Preston Sugar Factory, US | daily low min (Tie) | -7.8 C (18.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 20 October 1979 | Preston Sugar Factory, US | daily rain | 27.7 mm (1.1 in) | 5.3 mm (0.21 in) | 42 years | 26 of 100 (Routine) |
| 19 October 1979 | Preston Sugar Factory, US | daily rain | 15.5 mm (0.6 in) | 1.0 mm (0.04 in) | 44 years | 19 of 100 (Routine) |
| 26 September 1979 | Preston Sugar Factory, US | daily high min (Tie) | 10.0 C (50.0 F) | tie | 36 years | 3 of 100 (Routine) |
Climate Trend
41 complete years, 1925 to 1979| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1925 | 8.4 C | +0.64 C |
| 1926 | 8.5 C | +0.68 C |
| 1927 | 7.6 C | -0.22 C |
| 1928 | 7.6 C | -0.21 C |
| 1929 | 7.0 C | -0.76 C |
| 1930 | 6.8 C | -1.01 C |
| 1931 | 7.3 C | -0.52 C |
| 1932 | 6.3 C | -1.50 C |
| 1933 | 7.4 C | -0.42 C |
| 1934 | 10.0 C | +2.26 C |
| 1935 | 7.8 C | +0.00 C |
| 1936 | 8.1 C | +0.29 C |
| 1937 | 7.3 C | -0.44 C |
| 1938 | 8.5 C | +0.68 C |
| 1939 | 8.4 C | +0.61 C |
| 1940 | 9.3 C | +1.49 C |
| 1941 | 7.8 C | +0.00 C |
| 1942 | 6.6 C | -1.22 C |
| 1943 | 8.0 C | +0.24 C |
| 1945 | 7.1 C | -0.67 C |
| 1946 | 8.1 C | +0.29 C |
| 1947 | 7.7 C | -0.06 C |
| 1949 | 7.4 C | -0.41 C |
| 1950 | 8.3 C | +0.56 C |
| 1951 | 7.7 C | -0.08 C |
| 1952 | 7.6 C | -0.15 C |
| 1953 | 9.2 C | +1.44 C |
| 1954 | 8.9 C | +1.10 C |
| 1955 | 6.9 C | -0.87 C |
| 1956 | 8.0 C | +0.20 C |
| 1957 | 8.1 C | +0.35 C |
| 1958 | 9.1 C | +1.34 C |
| 1959 | 8.6 C | +0.86 C |
| 1960 | 8.1 C | +0.28 C |
| 1961 | 8.8 C | +1.03 C |
| 1962 | 7.9 C | +0.10 C |
| 1963 | 7.8 C | +0.01 C |
| 1975 | 5.6 C | -2.23 C |
| 1976 | 6.2 C | -1.59 C |
| 1978 | 7.1 C | -0.73 C |
| 1979 | 6.3 C | -1.44 C |
The fitted trend in annual mean temperature here over 1925 to 1979 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 (-0.6 to 0.1) per decade. The slope is a straight line fitted to 41 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 (-0.6 to 0.1) per decade | 1925 to 1979 | 41 | 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 | 1925 to 1979 | 41 | Not clearly different from zero |
| Mean daily minimum | -0.1 C (-0.4 to 0.1) per decade | -0.3 F (-0.7 to 0.1) per decade | 1925 to 1979 | 41 | 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
1921 to 1980| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.6 C (105.1 F) | 1931 | 36.7 C (98.1 F) | 51 |
| Coldest night (TNn) | -37.8 C (-36.0 F) | 1922 | -26.1 C (-15.0 F) | 51 |
| Wettest day (Rx1day) | 52.8 mm (2.1 in) | 1921 | 27.2 mm (1.1 in) | 51 |
| Wettest five days (Rx5day) | 118.1 mm (4.6 in) | 1921 | 43.7 mm (1.7 in) | 51 |
| Longest dry spell (CDD) | 71 days | 1956 | 34 days | 51 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1921 | 10.6 C (51.1 F) |
| 1922 | 36.1 C (97.0 F) |
| 1923 | 35.0 C (95.0 F) |
| 1924 | 35.0 C (95.0 F) |
| 1925 | 37.2 C (99.0 F) |
| 1926 | 36.1 C (97.0 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 38.3 C (100.9 F) |
| 1929 | 37.8 C (100.0 F) |
| 1930 | 36.1 C (97.0 F) |
| 1931 | 40.6 C (105.1 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 38.3 C (100.9 F) |
| 1934 | 38.3 C (100.9 F) |
| 1935 | 37.8 C (100.0 F) |
| 1936 | 38.9 C (102.0 F) |
| 1937 | 37.8 C (100.0 F) |
| 1938 | 35.0 C (95.0 F) |
| 1939 | 39.4 C (102.9 F) |
| 1940 | 38.9 C (102.0 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 38.3 C (100.9 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 36.1 C (97.0 F) |
| 1946 | 36.1 C (97.0 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 36.1 C (97.0 F) |
| 1949 | 38.3 C (100.9 F) |
| 1950 | 36.7 C (98.1 F) |
| 1951 | 37.8 C (100.0 F) |
| 1952 | 34.4 C (93.9 F) |
| 1953 | 35.0 C (95.0 F) |
| 1954 | 38.3 C (100.9 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 37.2 C (99.0 F) |
| 1957 | 35.0 C (95.0 F) |
| 1958 | 37.2 C (99.0 F) |
| 1959 | 36.7 C (98.1 F) |
| 1960 | 38.3 C (100.9 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 36.7 C (98.1 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 35.0 C (95.0 F) |
| 1974 | 37.2 C (99.0 F) |
| 1975 | 36.1 C (97.0 F) |
| 1976 | 35.6 C (96.1 F) |
| 1977 | 35.6 C (96.1 F) |
| 1978 | 36.1 C (97.0 F) |
| 1979 | 36.1 C (97.0 F) |
| 1980 | 7.8 C (46.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1921 | -14.4 C (6.1 F) |
| 1922 | -37.8 C (-36.0 F) |
| 1923 | -30.0 C (-22.0 F) |
| 1924 | -35.0 C (-31.0 F) |
| 1925 | -22.8 C (-9.0 F) |
| 1926 | -24.4 C (-11.9 F) |
| 1927 | -28.3 C (-18.9 F) |
| 1928 | -25.6 C (-14.1 F) |
| 1929 | -30.6 C (-23.1 F) |
| 1930 | -35.6 C (-32.1 F) |
| 1931 | -26.7 C (-16.1 F) |
| 1932 | -33.3 C (-27.9 F) |
| 1933 | -35.6 C (-32.1 F) |
| 1934 | -18.9 C (-2.0 F) |
| 1935 | -23.9 C (-11.0 F) |
| 1936 | -30.0 C (-22.0 F) |
| 1937 | -35.6 C (-32.1 F) |
| 1938 | -16.7 C (1.9 F) |
| 1939 | -25.0 C (-13.0 F) |
| 1940 | -22.2 C (-8.0 F) |
| 1941 | -21.7 C (-7.1 F) |
| 1942 | -32.2 C (-26.0 F) |
| 1943 | -23.3 C (-9.9 F) |
| 1944 | -26.7 C (-16.1 F) |
| 1945 | -25.6 C (-14.1 F) |
| 1946 | -23.3 C (-9.9 F) |
| 1947 | -26.1 C (-15.0 F) |
| 1948 | -25.6 C (-14.1 F) |
| 1949 | -33.3 C (-27.9 F) |
| 1950 | -27.2 C (-17.0 F) |
| 1951 | -28.3 C (-18.9 F) |
| 1952 | -26.7 C (-16.1 F) |
| 1953 | -18.3 C (-0.9 F) |
| 1954 | -22.8 C (-9.0 F) |
| 1955 | -30.0 C (-22.0 F) |
| 1956 | -26.1 C (-15.0 F) |
| 1957 | -25.0 C (-13.0 F) |
| 1958 | -21.1 C (-6.0 F) |
| 1959 | -21.1 C (-6.0 F) |
| 1960 | -28.3 C (-18.9 F) |
| 1961 | -20.6 C (-5.1 F) |
| 1962 | -31.1 C (-24.0 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -29.4 C (-20.9 F) |
| 1974 | -23.9 C (-11.0 F) |
| 1975 | -30.0 C (-22.0 F) |
| 1976 | -23.3 C (-9.9 F) |
| 1977 | -26.1 C (-15.0 F) |
| 1978 | -30.6 C (-23.1 F) |
| 1979 | -31.7 C (-25.1 F) |
| 1980 | -12.2 C (10.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1921 | 52.8 mm (2.1 in) |
| 1922 | 31.5 mm (1.2 in) |
| 1923 | 52.3 mm (2.1 in) |
| 1924 | 35.8 mm (1.4 in) |
| 1925 | 21.1 mm (0.8 in) |
| 1926 | 40.6 mm (1.6 in) |
| 1927 | 19.8 mm (0.8 in) |
| 1928 | 27.2 mm (1.1 in) |
| 1929 | 20.6 mm (0.8 in) |
| 1930 | 51.8 mm (2.0 in) |
| 1931 | 21.1 mm (0.8 in) |
| 1932 | 18.5 mm (0.7 in) |
| 1933 | 26.9 mm (1.1 in) |
| 1934 | 23.4 mm (0.9 in) |
| 1935 | 14.0 mm (0.6 in) |
| 1936 | 35.3 mm (1.4 in) |
| 1937 | 18.3 mm (0.7 in) |
| 1938 | 22.9 mm (0.9 in) |
| 1939 | 31.5 mm (1.2 in) |
| 1940 | 24.4 mm (1.0 in) |
| 1941 | 37.3 mm (1.5 in) |
| 1942 | 29.7 mm (1.2 in) |
| 1943 | 32.0 mm (1.3 in) |
| 1944 | 20.8 mm (0.8 in) |
| 1945 | 27.4 mm (1.1 in) |
| 1946 | 30.2 mm (1.2 in) |
| 1947 | 48.8 mm (1.9 in) |
| 1948 | 29.5 mm (1.2 in) |
| 1949 | 29.7 mm (1.2 in) |
| 1950 | 20.3 mm (0.8 in) |
| 1951 | 29.2 mm (1.1 in) |
| 1952 | 25.1 mm (1.0 in) |
| 1953 | 20.8 mm (0.8 in) |
| 1954 | 29.0 mm (1.1 in) |
| 1955 | 31.2 mm (1.2 in) |
| 1956 | 18.3 mm (0.7 in) |
| 1957 | 33.3 mm (1.3 in) |
| 1958 | 26.7 mm (1.1 in) |
| 1959 | 20.8 mm (0.8 in) |
| 1960 | 23.6 mm (0.9 in) |
| 1961 | 21.8 mm (0.9 in) |
| 1962 | 22.9 mm (0.9 in) |
| 1963 | 38.4 mm (1.5 in) |
| 1964 | 50.8 mm (2.0 in) |
| 1974 | 20.6 mm (0.8 in) |
| 1975 | 18.5 mm (0.7 in) |
| 1976 | 18.0 mm (0.7 in) |
| 1977 | 30.5 mm (1.2 in) |
| 1978 | 30.5 mm (1.2 in) |
| 1979 | 27.7 mm (1.1 in) |
| 1980 | 24.6 mm (1.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1921 | 118.1 mm (4.6 in) |
| 1922 | 37.9 mm (1.5 in) |
| 1923 | 65.0 mm (2.6 in) |
| 1924 | 35.8 mm (1.4 in) |
| 1925 | 46.2 mm (1.8 in) |
| 1926 | 54.3 mm (2.1 in) |
| 1927 | 40.7 mm (1.6 in) |
| 1928 | 49.7 mm (2.0 in) |
| 1929 | 30.2 mm (1.2 in) |
| 1930 | 66.5 mm (2.6 in) |
| 1931 | 31.2 mm (1.2 in) |
| 1932 | 40.5 mm (1.6 in) |
| 1933 | 56.6 mm (2.2 in) |
| 1934 | 38.7 mm (1.5 in) |
| 1935 | 31.2 mm (1.2 in) |
| 1936 | 36.8 mm (1.4 in) |
| 1937 | 42.6 mm (1.7 in) |
| 1938 | 46.8 mm (1.8 in) |
| 1939 | 37.6 mm (1.5 in) |
| 1940 | 41.4 mm (1.6 in) |
| 1941 | 58.7 mm (2.3 in) |
| 1942 | 48.2 mm (1.9 in) |
| 1943 | 50.5 mm (2.0 in) |
| 1944 | 42.9 mm (1.7 in) |
| 1945 | 53.0 mm (2.1 in) |
| 1946 | 54.3 mm (2.1 in) |
| 1947 | 57.7 mm (2.3 in) |
| 1948 | 54.9 mm (2.2 in) |
| 1949 | 63.7 mm (2.5 in) |
| 1950 | 34.3 mm (1.4 in) |
| 1951 | 36.1 mm (1.4 in) |
| 1952 | 32.4 mm (1.3 in) |
| 1953 | 43.7 mm (1.7 in) |
| 1954 | 42.4 mm (1.7 in) |
| 1955 | 60.2 mm (2.4 in) |
| 1956 | 30.9 mm (1.2 in) |
| 1957 | 45.3 mm (1.8 in) |
| 1958 | 36.1 mm (1.4 in) |
| 1959 | 36.3 mm (1.4 in) |
| 1960 | 39.6 mm (1.6 in) |
| 1961 | 48.7 mm (1.9 in) |
| 1962 | 55.9 mm (2.2 in) |
| 1963 | 45.8 mm (1.8 in) |
| 1964 | 57.0 mm (2.2 in) |
| 1974 | 44.5 mm (1.8 in) |
| 1975 | 36.3 mm (1.4 in) |
| 1976 | 34.5 mm (1.4 in) |
| 1977 | 37.5 mm (1.5 in) |
| 1978 | 41.2 mm (1.6 in) |
| 1979 | 46.2 mm (1.8 in) |
| 1980 | 74.9 mm (2.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1921 | 18 days |
| 1922 | 36 days |
| 1923 | 31 days |
| 1924 | 20 days |
| 1925 | 19 days |
| 1926 | 34 days |
| 1927 | 26 days |
| 1928 | 32 days |
| 1929 | 41 days |
| 1930 | 17 days |
| 1931 | 48 days |
| 1932 | 38 days |
| 1933 | 41 days |
| 1934 | 28 days |
| 1935 | 64 days |
| 1936 | 36 days |
| 1937 | 39 days |
| 1938 | 42 days |
| 1939 | 60 days |
| 1940 | 48 days |
| 1941 | 16 days |
| 1942 | 29 days |
| 1943 | 39 days |
| 1944 | 38 days |
| 1945 | 19 days |
| 1946 | 21 days |
| 1947 | 34 days |
| 1948 | 42 days |
| 1949 | 26 days |
| 1950 | 27 days |
| 1951 | 42 days |
| 1952 | 60 days |
| 1953 | 32 days |
| 1954 | 32 days |
| 1955 | 24 days |
| 1956 | 71 days |
| 1957 | 61 days |
| 1958 | 32 days |
| 1959 | 50 days |
| 1960 | 51 days |
| 1961 | 31 days |
| 1962 | 29 days |
| 1963 | 30 days |
| 1964 | 48 days |
| 1974 | 56 days |
| 1975 | 26 days |
| 1976 | 62 days |
| 1977 | 29 days |
| 1978 | 51 days |
| 1979 | 38 days |
| 1980 | 9 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
41 years with a frostAcross 41 years with a frost, the median last spring frost at Preston Sugar Factory falls on 28 May and the median first autumn frost on 16 September, which leaves a median of 112 days between them.
Fitted over all years, the growing season changes by -1.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1936 to 1979) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 28 May | n/a | 27 May | n/a | +1.3 days per decade |
| First autumn frost | 16 September | n/a | 18 September | n/a | +0.1 days per decade |
| Growing days | 112 days | n/a | 114 days | n/a | -1.2 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
44 years, 1922 to 1979A day with at least 25.6 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 53.6 mm (2.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 25.6 mm (1.0 in) | |
| 5 years | 32.6 mm (1.3 in) | |
| 10 years | 37.5 mm (1.5 in) | |
| 25 years | 43.8 mm (1.7 in) | |
| 50 years | 48.6 mm (1.9 in) | Longer than the 44 years of record |
| 100 years | 53.6 mm (2.1 in) | Longer than the 44 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, 44 years of values from 1922 to 1979.
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: 51.8 mm (2.0 in) in 1930; 48.8 mm (1.9 in) in 1947; 40.6 mm (1.6 in) in 1926.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Preston Sugar Factory, at 1930 and 1949. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1930 ran 0.5 C (0.8 F) lower than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1949 ran 0.2 C (0.4 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1930 | -0.5 | -0.8 | possible | 5 |
| 1949 | +0.2 | +0.4 | possible | 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).