Merritt Weather Records (CA001125070)
Record envelope, standing records and threshold days for Merritt (CA001125070), British Columbia, Canada, with 49 years of record.
Key Facts for Merritt
- Merritt (CA001125070) is a weather station in British Columbia, Canada at 50.12 latitude and -120.80 longitude, 585 m (1,919 ft) above sea level.
- The station reports from 1918 to 1966, 49 years of record.
- 1,464 records set at Merritt still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Merritt set a daily record high minimum temperature of 3.9 C (39.0 F) on 19 December 1966.
About the Station
- Location: British Columbia, Canada, 50.12 latitude, -120.80 longitude.
- Elevation: 585 m (1,919 ft).
- Period of record: 1918 to 1966, 49 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 | 15.0 C (59.0 F) | -43.3 C (-45.9 F) | n/a | n/a |
| Feb | 15.6 C (60.1 F) | -35.0 C (-31.0 F) | n/a | n/a |
| Mar | 22.2 C (72.0 F) | -27.2 C (-17.0 F) | n/a | n/a |
| Apr | 28.9 C (84.0 F) | -12.2 C (10.0 F) | n/a | n/a |
| May | 33.3 C (91.9 F) | -5.6 C (21.9 F) | n/a | n/a |
| Jun | 35.6 C (96.1 F) | -1.7 C (28.9 F) | n/a | n/a |
| Jul | 38.9 C (102.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Aug | 36.1 C (97.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Sep | 31.7 C (89.1 F) | -7.2 C (19.0 F) | n/a | n/a |
| Oct | 26.7 C (80.1 F) | -19.4 C (-2.9 F) | n/a | n/a |
| Nov | 23.9 C (75.0 F) | -23.9 C (-11.0 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -37.2 C (-35.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1918 | 1 |
| 1919 | 62 |
| 1920 | 55 |
| 1921 | 40 |
| 1922 | 44 |
| 1923 | 23 |
| 1924 | 64 |
| 1925 | 37 |
| 1926 | 46 |
| 1927 | 35 |
| 1928 | 43 |
| 1929 | 49 |
| 1930 | 36 |
| 1931 | 35 |
| 1932 | 30 |
| 1933 | 32 |
| 1934 | 49 |
| 1935 | 52 |
| 1936 | 61 |
| 1937 | 25 |
| 1938 | 22 |
| 1939 | 44 |
| 1940 | 31 |
| 1941 | 41 |
| 1942 | 32 |
| 1943 | 30 |
| 1944 | 28 |
| 1945 | 28 |
| 1946 | 25 |
| 1947 | 27 |
| 1948 | 20 |
| 1949 | 35 |
| 1950 | 75 |
| 1951 | 24 |
| 1952 | 6 |
| 1962 | 21 |
| 1963 | 45 |
| 1964 | 24 |
| 1965 | 51 |
| 1966 | 36 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1950-01-02 | Record low minimum temperature | Record low minimum temperature -38.9 C (-38.0 F) |
| 1950-01-16 | Record low minimum temperature | Record low minimum temperature -40.6 C (-41.1 F) |
| 1950-01-24 | Record low minimum temperature | Record low minimum temperature -43.3 C (-45.9 F) |
Wettest Day of Each Month
Jun: 56.9 mm (2.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 30.5 mm (1.2 in) | 21 January 1935 |
| Feb | 38.1 mm (1.5 in) | 4 February 1930 |
| Mar | 30.5 mm (1.2 in) | 1 March 1919 |
| Apr | 27.2 mm (1.1 in) | 8 April 1941 |
| May | 30.0 mm (1.2 in) | 10 May 1943 |
| Jun | 56.9 mm (2.2 in) | 3 June 1939 |
| Jul | 20.8 mm (0.8 in) | 5 July 1962 |
| Aug | 26.7 mm (1.1 in) | 21 August 1925 |
| Sep | 53.1 mm (2.1 in) | 4 September 1938 |
| Oct | 37.8 mm (1.5 in) | 25 October 1945 |
| Nov | 33.0 mm (1.3 in) | 22 November 1921 |
| Dec | 33.0 mm (1.3 in) | 11 December 1933 |
Period of Record Coverage
1918 to 1966| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1918 | 61 | 17% | No |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | 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 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 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 | 364 | 100% | Yes |
| 1943 | 365 | 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 | 365 | 100% | Yes |
| 1952 | 182 | 50% | No |
| 1962 | 230 | 63% | No |
| 1963 | 364 | 100% | Yes |
| 1964 | 359 | 98% | Yes |
| 1965 | 353 | 97% | Yes |
| 1966 | 350 | 96% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 19 December 1966 | Merritt, CA | daily high min | 3.9 C (39.0 F) | 1.1 C (2.0 F) | 0 years | 5 of 100 (Routine) |
| 19 December 1966 | Merritt, CA | daily high max | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 0 years | 4 of 100 (Routine) |
| 18 December 1966 | Merritt, CA | daily high max | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 29 years | 12 of 100 (Routine) |
| 17 December 1966 | Merritt, CA | daily high max | 9.4 C (48.9 F) | 0.5 C (0.9 F) | 43 years | 16 of 100 (Routine) |
| 16 December 1966 | Merritt, CA | daily high max (Tie) | 11.1 C (52.0 F) | tie | 24 years | 2 of 100 (Routine) |
| 4 December 1966 | Merritt, CA | daily rain | 3.0 mm (0.12 in) | 0.2 mm (0.01 in) | 28 years | 12 of 100 (Routine) |
| 30 November 1966 | Merritt, CA | daily low max (Tie) | -8.9 C (16.0 F) | tie | 35 years | 3 of 100 (Routine) |
| 11 November 1966 | Merritt, CA | daily rain | 4.3 mm (0.17 in) | 0.2 mm (0.01 in) | 16 years | 9 of 100 (Routine) |
| 9 November 1966 | Merritt, CA | daily rain | 7.1 mm (0.28 in) | 4.6 mm (0.18 in) | 15 years | 19 of 100 (Routine) |
| 9 November 1966 | Merritt, CA | daily snowfall | 7.1 cm (2.8 in) | 4.6 cm (1.8 in) | 15 years | 19 of 100 (Routine) |
| 1 November 1966 | Merritt, CA | daily high max | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 35 years | 18 of 100 (Routine) |
| 24 October 1966 | Merritt, CA | daily high min (Tie) | 9.4 C (48.9 F) | tie | 36 years | 3 of 100 (Routine) |
| 21 October 1966 | Merritt, CA | daily snowfall | 0.5 cm (0.2 in) | 0.5 cm (0.2 in) | 47 years | 19 of 100 (Routine) |
| 12 October 1966 | Merritt, CA | daily low max | 9.4 C (48.9 F) | 0.6 C (1.1 F) | 25 years | 12 of 100 (Routine) |
| 6 October 1966 | Merritt, CA | daily rain | 4.1 mm (0.16 in) | 0.8 mm (0.03 in) | 20 years | 11 of 100 (Routine) |
| 6 October 1966 | Merritt, CA | daily high min (Tie) | 9.4 C (48.9 F) | tie | 41 years | 4 of 100 (Routine) |
| 5 October 1966 | Merritt, CA | daily high max | 23.9 C (75.0 F) | 1.7 C (3.1 F) | 47 years | 21 of 100 (Routine) |
| 1 October 1966 | Merritt, CA | daily rain | 7.4 mm (0.29 in) | 4.4 mm (0.17 in) | 47 years | 20 of 100 (Routine) |
| 28 September 1966 | Merritt, CA | daily high min | 10.6 C (51.1 F) | 1.7 C (3.1 F) | 44 years | 21 of 100 (Routine) |
| 23 September 1966 | Merritt, CA | daily high min | 12.2 C (54.0 F) | 2.2 C (4.0 F) | 28 years | 17 of 100 (Routine) |
Climate Trend
37 complete years, 1919 to 1966| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1919 | 5.0 C | -1.48 C |
| 1920 | 6.5 C | +0.02 C |
| 1921 | 6.1 C | -0.31 C |
| 1922 | 5.4 C | -1.03 C |
| 1923 | 7.2 C | +0.78 C |
| 1924 | 6.5 C | +0.08 C |
| 1925 | 8.0 C | +1.53 C |
| 1926 | 7.6 C | +1.19 C |
| 1927 | 5.4 C | -1.01 C |
| 1928 | 7.3 C | +0.86 C |
| 1929 | 5.5 C | -0.92 C |
| 1930 | 6.1 C | -0.29 C |
| 1931 | 7.0 C | +0.53 C |
| 1932 | 6.1 C | -0.34 C |
| 1933 | 6.4 C | 0.00 C |
| 1934 | 8.0 C | +1.59 C |
| 1935 | 5.9 C | -0.50 C |
| 1936 | 6.1 C | -0.34 C |
| 1937 | 5.5 C | -0.96 C |
| 1938 | 6.8 C | +0.41 C |
| 1939 | 8.1 C | +1.64 C |
| 1940 | 7.9 C | +1.45 C |
| 1941 | 8.8 C | +2.34 C |
| 1942 | 7.1 C | +0.66 C |
| 1943 | 5.7 C | -0.73 C |
| 1944 | 6.4 C | +0.01 C |
| 1945 | 6.3 C | -0.11 C |
| 1946 | 6.1 C | -0.35 C |
| 1947 | 6.7 C | +0.25 C |
| 1948 | 5.5 C | -0.92 C |
| 1949 | 5.2 C | -1.28 C |
| 1950 | 3.9 C | -2.49 C |
| 1951 | 5.0 C | -1.47 C |
| 1963 | 7.2 C | +0.76 C |
| 1964 | 6.1 C | -0.37 C |
| 1965 | 6.9 C | +0.50 C |
| 1966 | 6.9 C | +0.43 C |
The fitted trend in annual mean temperature here over 1919 to 1966 is -0.03 C (-0.30 to 0.24) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.5 to 0.4) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.03 C (-0.30 to 0.24) per decade | -0.1 F (-0.5 to 0.4) per decade | 1919 to 1966 | 37 | Not clearly different from zero |
| Mean daily maximum | -0.1 C (-0.3 to 0.2) per decade | -0.1 F (-0.6 to 0.3) per decade | 1919 to 1966 | 37 | Not clearly different from zero |
| Mean daily minimum | 0.01 C (-0.31 to 0.33) per decade | 0.02 F (-0.56 to 0.60) per decade | 1919 to 1966 | 37 | 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
1918 to 1966| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1941 | 33.9 C (93.0 F) | 40 |
| Coldest night (TNn) | -43.3 C (-45.9 F) | 1950 | -28.9 C (-20.0 F) | 40 |
| Wettest day (Rx1day) | 56.9 mm (2.2 in) | 1939 | 23.8 mm (0.9 in) | 40 |
| Wettest five days (Rx5day) | 60.7 mm (2.4 in) | 1939 | 29.8 mm (1.2 in) | 40 |
| Longest dry spell (CDD) | 75 days | 1922 | 35 days | 40 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1918 | 9.4 C (48.9 F) |
| 1919 | 32.8 C (91.0 F) |
| 1920 | 33.3 C (91.9 F) |
| 1921 | 31.7 C (89.1 F) |
| 1922 | 36.7 C (98.1 F) |
| 1923 | 33.3 C (91.9 F) |
| 1924 | 35.0 C (95.0 F) |
| 1925 | 35.6 C (96.1 F) |
| 1926 | 36.1 C (97.0 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 36.7 C (98.1 F) |
| 1929 | 32.2 C (90.0 F) |
| 1930 | 36.1 C (97.0 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 32.2 C (90.0 F) |
| 1933 | 33.3 C (91.9 F) |
| 1934 | 36.1 C (97.0 F) |
| 1935 | 36.1 C (97.0 F) |
| 1936 | 33.3 C (91.9 F) |
| 1937 | 33.9 C (93.0 F) |
| 1938 | 35.6 C (96.1 F) |
| 1939 | 36.7 C (98.1 F) |
| 1940 | 33.3 C (91.9 F) |
| 1941 | 38.9 C (102.0 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 31.1 C (88.0 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 33.3 C (91.9 F) |
| 1946 | 34.4 C (93.9 F) |
| 1947 | 32.2 C (90.0 F) |
| 1948 | 32.2 C (90.0 F) |
| 1949 | 31.7 C (89.1 F) |
| 1950 | 32.2 C (90.0 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 26.7 C (80.1 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 34.4 C (93.9 F) |
| 1964 | 31.7 C (89.1 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1918 | -18.3 C (-0.9 F) |
| 1919 | -31.7 C (-25.1 F) |
| 1920 | -23.9 C (-11.0 F) |
| 1921 | -28.9 C (-20.0 F) |
| 1922 | -35.0 C (-31.0 F) |
| 1923 | -35.0 C (-31.0 F) |
| 1924 | -34.4 C (-29.9 F) |
| 1925 | -21.7 C (-7.1 F) |
| 1926 | -23.9 C (-11.0 F) |
| 1927 | -37.2 C (-35.0 F) |
| 1928 | -22.2 C (-8.0 F) |
| 1929 | -36.1 C (-33.0 F) |
| 1930 | -32.8 C (-27.0 F) |
| 1931 | -21.7 C (-7.1 F) |
| 1932 | -36.1 C (-33.0 F) |
| 1933 | -30.0 C (-22.0 F) |
| 1934 | -25.0 C (-13.0 F) |
| 1935 | -37.8 C (-36.0 F) |
| 1936 | -35.0 C (-31.0 F) |
| 1937 | -33.3 C (-27.9 F) |
| 1938 | -25.6 C (-14.1 F) |
| 1939 | -28.9 C (-20.0 F) |
| 1940 | -18.9 C (-2.0 F) |
| 1941 | -20.6 C (-5.1 F) |
| 1942 | -22.2 C (-8.0 F) |
| 1943 | -36.1 C (-33.0 F) |
| 1944 | -22.2 C (-8.0 F) |
| 1945 | -23.9 C (-11.0 F) |
| 1946 | -25.6 C (-14.1 F) |
| 1947 | -29.4 C (-20.9 F) |
| 1948 | -26.7 C (-16.1 F) |
| 1949 | -34.4 C (-29.9 F) |
| 1950 | -43.3 C (-45.9 F) |
| 1951 | -37.2 C (-35.0 F) |
| 1952 | -32.2 C (-26.0 F) |
| 1962 | -12.8 C (9.0 F) |
| 1963 | -26.1 C (-15.0 F) |
| 1964 | -32.8 C (-27.0 F) |
| 1965 | -27.8 C (-18.0 F) |
| 1966 | -27.8 C (-18.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1918 | 25.4 mm (1.0 in) |
| 1919 | 30.5 mm (1.2 in) |
| 1920 | 15.7 mm (0.6 in) |
| 1921 | 33.0 mm (1.3 in) |
| 1922 | 24.1 mm (0.9 in) |
| 1923 | 19.6 mm (0.8 in) |
| 1924 | 12.7 mm (0.5 in) |
| 1925 | 26.7 mm (1.1 in) |
| 1926 | 15.5 mm (0.6 in) |
| 1927 | 17.8 mm (0.7 in) |
| 1928 | 15.2 mm (0.6 in) |
| 1929 | 30.0 mm (1.2 in) |
| 1930 | 38.1 mm (1.5 in) |
| 1931 | 11.4 mm (0.4 in) |
| 1932 | 13.5 mm (0.5 in) |
| 1933 | 33.0 mm (1.3 in) |
| 1934 | 22.9 mm (0.9 in) |
| 1935 | 30.5 mm (1.2 in) |
| 1936 | 24.1 mm (0.9 in) |
| 1937 | 30.5 mm (1.2 in) |
| 1938 | 53.1 mm (2.1 in) |
| 1939 | 56.9 mm (2.2 in) |
| 1940 | 15.2 mm (0.6 in) |
| 1941 | 27.2 mm (1.1 in) |
| 1942 | 25.9 mm (1.0 in) |
| 1943 | 30.0 mm (1.2 in) |
| 1944 | 20.8 mm (0.8 in) |
| 1945 | 37.8 mm (1.5 in) |
| 1946 | 19.1 mm (0.8 in) |
| 1947 | 36.8 mm (1.4 in) |
| 1948 | 15.2 mm (0.6 in) |
| 1949 | 29.2 mm (1.1 in) |
| 1950 | 9.1 mm (0.36 in) |
| 1951 | 17.0 mm (0.7 in) |
| 1952 | 14.0 mm (0.6 in) |
| 1962 | 20.8 mm (0.8 in) |
| 1963 | 27.2 mm (1.1 in) |
| 1964 | 23.4 mm (0.9 in) |
| 1965 | 20.3 mm (0.8 in) |
| 1966 | 13.2 mm (0.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1918 | 49.7 mm (2.0 in) |
| 1919 | 30.5 mm (1.2 in) |
| 1920 | 25.1 mm (1.0 in) |
| 1921 | 49.8 mm (2.0 in) |
| 1922 | 24.9 mm (1.0 in) |
| 1923 | 39.4 mm (1.6 in) |
| 1924 | 27.3 mm (1.1 in) |
| 1925 | 26.7 mm (1.1 in) |
| 1926 | 22.6 mm (0.9 in) |
| 1927 | 29.1 mm (1.1 in) |
| 1928 | 17.7 mm (0.7 in) |
| 1929 | 38.1 mm (1.5 in) |
| 1930 | 38.1 mm (1.5 in) |
| 1931 | 20.3 mm (0.8 in) |
| 1932 | 26.2 mm (1.0 in) |
| 1933 | 45.7 mm (1.8 in) |
| 1934 | 26.7 mm (1.1 in) |
| 1935 | 51.6 mm (2.0 in) |
| 1936 | 26.6 mm (1.0 in) |
| 1937 | 52.7 mm (2.1 in) |
| 1938 | 55.4 mm (2.2 in) |
| 1939 | 60.7 mm (2.4 in) |
| 1940 | 16.7 mm (0.7 in) |
| 1941 | 54.7 mm (2.2 in) |
| 1942 | 26.7 mm (1.1 in) |
| 1943 | 46.8 mm (1.8 in) |
| 1944 | 27.4 mm (1.1 in) |
| 1945 | 38.6 mm (1.5 in) |
| 1946 | 26.0 mm (1.0 in) |
| 1947 | 45.6 mm (1.8 in) |
| 1948 | 28.8 mm (1.1 in) |
| 1949 | 55.2 mm (2.2 in) |
| 1950 | 23.4 mm (0.9 in) |
| 1951 | 40.1 mm (1.6 in) |
| 1952 | 25.9 mm (1.0 in) |
| 1962 | 28.5 mm (1.1 in) |
| 1963 | 29.0 mm (1.1 in) |
| 1964 | 47.3 mm (1.9 in) |
| 1965 | 33.2 mm (1.3 in) |
| 1966 | 37.4 mm (1.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1918 | 10 days |
| 1919 | 38 days |
| 1920 | 20 days |
| 1921 | 26 days |
| 1922 | 75 days |
| 1923 | 28 days |
| 1924 | 40 days |
| 1925 | 37 days |
| 1926 | 57 days |
| 1927 | 27 days |
| 1928 | 51 days |
| 1929 | 75 days |
| 1930 | 46 days |
| 1931 | 26 days |
| 1932 | 34 days |
| 1933 | 21 days |
| 1934 | 40 days |
| 1935 | 56 days |
| 1936 | 41 days |
| 1937 | 35 days |
| 1938 | 42 days |
| 1939 | 36 days |
| 1940 | 40 days |
| 1941 | 37 days |
| 1942 | 36 days |
| 1943 | 24 days |
| 1944 | 30 days |
| 1945 | 28 days |
| 1946 | 37 days |
| 1947 | 26 days |
| 1948 | 23 days |
| 1949 | 32 days |
| 1950 | 33 days |
| 1951 | 39 days |
| 1952 | 32 days |
| 1962 | 23 days |
| 1963 | 37 days |
| 1964 | 25 days |
| 1965 | 26 days |
| 1966 | 33 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
37 years with a frostAcross 37 years with a frost, the median last spring frost at Merritt falls on 22 May and the median first autumn frost on 17 September, which leaves a median of 118 days between them.
Fitted over all years, the growing season changes by +1.0 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1926 to 1966) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 22 May | n/a | 20 May | n/a | -1.2 days per decade |
| First autumn frost | 17 September | n/a | 17 September | n/a | -0.2 days per decade |
| Growing days | 118 days | n/a | 122 days | n/a | +1.0 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
37 years, 1919 to 1966A day with at least 23.1 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 59.2 mm (2.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 23.1 mm (0.9 in) | |
| 5 years | 32.7 mm (1.3 in) | |
| 10 years | 39.1 mm (1.5 in) | |
| 25 years | 47.2 mm (1.9 in) | |
| 50 years | 53.2 mm (2.1 in) | Longer than the 37 years of record |
| 100 years | 59.2 mm (2.3 in) | Longer than the 37 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, 37 years of values from 1919 to 1966.
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: 56.9 mm (2.2 in) in 1939; 53.1 mm (2.1 in) in 1938; 38.1 mm (1.5 in) in 1930.
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).