Canyon Ferry Weather Records (USC00241460)
Record envelope, standing records and threshold days for Canyon Ferry (USC00241460), Montana, United States, with 56 years of record.
Key Facts for Canyon Ferry
- Canyon Ferry (USC00241460) is a weather station in Montana, United States at 46.63 latitude and -111.70 longitude, 1,058 m (3,471 ft) above sea level.
- The station reports from 1898 to 1953, 56 years of record.
- 1,464 records set at Canyon Ferry still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Canyon Ferry set a daily record high maximum temperature of 17.8 C (64.0 F) on 26 February 1950.
About the Station
- Location: Montana, United States, 46.63 latitude, -111.70 longitude.
- Elevation: 1,058 m (3,471 ft).
- Period of record: 1898 to 1953, 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 | 16.1 C (61.0 F) | -39.4 C (-38.9 F) | n/a | n/a |
| Feb | 20.6 C (69.1 F) | -40.0 C (-40.0 F) | n/a | n/a |
| Mar | 23.3 C (73.9 F) | -32.8 C (-27.0 F) | n/a | n/a |
| Apr | 31.1 C (88.0 F) | -20.0 C (-4.0 F) | n/a | n/a |
| May | 38.9 C (102.0 F) | -6.7 C (19.9 F) | n/a | n/a |
| Jun | 39.4 C (102.9 F) | -1.1 C (30.0 F) | n/a | n/a |
| Jul | 40.0 C (104.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Aug | 37.8 C (100.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Sep | 35.0 C (95.0 F) | -10.0 C (14.0 F) | n/a | n/a |
| Oct | 29.4 C (84.9 F) | -15.0 C (5.0 F) | n/a | n/a |
| Nov | 21.1 C (70.0 F) | -30.6 C (-23.1 F) | n/a | n/a |
| Dec | 16.7 C (62.1 F) | -40.6 C (-41.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1898 | 1 |
| 1899 | 39 |
| 1900 | 47 |
| 1901 | 27 |
| 1902 | 15 |
| 1903 | 30 |
| 1904 | 22 |
| 1905 | 35 |
| 1906 | 34 |
| 1907 | 23 |
| 1908 | 27 |
| 1909 | 27 |
| 1910 | 48 |
| 1911 | 28 |
| 1912 | 22 |
| 1913 | 30 |
| 1914 | 19 |
| 1915 | 12 |
| 1916 | 39 |
| 1917 | 23 |
| 1918 | 48 |
| 1919 | 66 |
| 1920 | 18 |
| 1921 | 42 |
| 1922 | 24 |
| 1923 | 24 |
| 1924 | 38 |
| 1925 | 33 |
| 1926 | 23 |
| 1927 | 20 |
| 1928 | 16 |
| 1929 | 29 |
| 1930 | 23 |
| 1931 | 31 |
| 1932 | 48 |
| 1933 | 29 |
| 1934 | 30 |
| 1935 | 33 |
| 1936 | 61 |
| 1937 | 27 |
| 1938 | 7 |
| 1939 | 37 |
| 1940 | 28 |
| 1941 | 14 |
| 1942 | 21 |
| 1943 | 24 |
| 1944 | 12 |
| 1945 | 17 |
| 1946 | 23 |
| 1947 | 16 |
| 1948 | 17 |
| 1949 | 27 |
| 1950 | 10 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1929-01-28 | Record low maximum temperature | Record low maximum temperature -31.1 C (-24.0 F) |
| 1935-07-16 | Record high minimum temperature | Record high minimum temperature 21.7 C (71.1 F) |
Wettest Day of Each Month
May: 92.7 mm (3.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 15.2 mm (0.6 in) | 19 January 1906 |
| Feb | 22.9 mm (0.9 in) | 11 February 1919 |
| Mar | 11.7 mm (0.5 in) | 23 March 1907 |
| Apr | 31.2 mm (1.2 in) | 23 April 1925 |
| May | 92.7 mm (3.6 in) | 12 May 1900 |
| Jun | 63.5 mm (2.5 in) | 5 June 1908 |
| Jul | 43.7 mm (1.7 in) | 4 July 1927 |
| Aug | 43.7 mm (1.7 in) | 21 August 1933 |
| Sep | 33.8 mm (1.3 in) | 3 September 1901 |
| Oct | 25.4 mm (1.0 in) | 13 October 1920 |
| Nov | 28.4 mm (1.1 in) | 6 November 1929 |
| Dec | 16.5 mm (0.6 in) | 19 December 1925 |
Period of Record Coverage
1898 to 1953| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1898 | 56 | 15% | No |
| 1899 | 357 | 98% | Yes |
| 1900 | 334 | 92% | Yes |
| 1901 | 351 | 96% | Yes |
| 1902 | 348 | 95% | Yes |
| 1903 | 363 | 99% | Yes |
| 1904 | 366 | 100% | Yes |
| 1905 | 363 | 99% | Yes |
| 1906 | 362 | 99% | Yes |
| 1907 | 365 | 100% | Yes |
| 1908 | 362 | 99% | Yes |
| 1909 | 363 | 99% | Yes |
| 1910 | 364 | 100% | Yes |
| 1911 | 364 | 100% | Yes |
| 1912 | 363 | 99% | Yes |
| 1913 | 364 | 100% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 364 | 100% | Yes |
| 1916 | 364 | 99% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 360 | 99% | Yes |
| 1920 | 335 | 92% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 365 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 364 | 100% | Yes |
| 1927 | 362 | 99% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 363 | 99% | Yes |
| 1930 | 360 | 99% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 362 | 99% | Yes |
| 1937 | 363 | 99% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 363 | 99% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 59 | 16% | No |
| 1953 | 1 | 0% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 26 February 1950 | Canyon Ferry, US | daily high max | 17.8 C (64.0 F) | 1.7 C (3.1 F) | 18 years | 12 of 100 (Routine) |
| 22 January 1950 | Canyon Ferry, US | daily rain | 10.2 mm (0.4 in) | 4.1 mm (0.16 in) | 50 years | 20 of 100 (Routine) |
| 21 January 1950 | Canyon Ferry, US | daily high min | -1.7 C (28.9 F) | 0.5 C (0.9 F) | 47 years | 19 of 100 (Routine) |
| 21 January 1950 | Canyon Ferry, US | daily high max | 10.0 C (50.0 F) | 1.1 C (2.0 F) | 40 years | 18 of 100 (Routine) |
| 15 January 1950 | Canyon Ferry, US | daily low max | -19.4 C (-2.9 F) | 1.1 C (2.0 F) | 43 years | 18 of 100 (Routine) |
| 15 January 1950 | Canyon Ferry, US | daily low min | -31.7 C (-25.1 F) | 2.3 C (4.1 F) | 20 years | 13 of 100 (Routine) |
| 14 January 1950 | Canyon Ferry, US | daily low max | -25.0 C (-13.0 F) | 2.2 C (4.0 F) | 43 years | 19 of 100 (Routine) |
| 13 January 1950 | Canyon Ferry, US | daily low max | -21.7 C (-7.1 F) | 0.6 C (1.1 F) | 43 years | 17 of 100 (Routine) |
| 13 January 1950 | Canyon Ferry, US | daily low min | -28.9 C (-20.0 F) | 0.6 C (1.1 F) | 36 years | 16 of 100 (Routine) |
| 3 January 1950 | Canyon Ferry, US | daily low max | -26.1 C (-15.0 F) | 5.0 C (9.0 F) | 40 years | 22 of 100 (Routine) |
| 3 January 1950 | Canyon Ferry, US | daily low min (Tie) | -35.6 C (-32.1 F) | tie | 40 years | 4 of 100 (Routine) |
| 2 January 1950 | Canyon Ferry, US | daily low max | -21.7 C (-7.1 F) | 3.9 C (7.0 F) | 26 years | 16 of 100 (Routine) |
| 2 January 1950 | Canyon Ferry, US | daily low min (Tie) | -30.0 C (-22.0 F) | tie | 39 years | 4 of 100 (Routine) |
| 28 December 1949 | Canyon Ferry, US | daily high min | 0.0 C (32.0 F) | 1.1 C (2.0 F) | 27 years | 14 of 100 (Routine) |
| 28 November 1949 | Canyon Ferry, US | daily high max | 15.6 C (60.1 F) | 3.4 C (6.1 F) | 35 years | 20 of 100 (Routine) |
| 27 November 1949 | Canyon Ferry, US | daily high min | 4.4 C (39.9 F) | 1.6 C (2.9 F) | 20 years | 13 of 100 (Routine) |
| 26 November 1949 | Canyon Ferry, US | daily high max | 14.4 C (57.9 F) | 0.5 C (0.9 F) | 20 years | 11 of 100 (Routine) |
| 25 November 1949 | Canyon Ferry, US | daily high max | 17.2 C (63.0 F) | 5.0 C (9.0 F) | 35 years | 23 of 100 (Routine) |
| 24 November 1949 | Canyon Ferry, US | daily high min (Tie) | 2.2 C (36.0 F) | tie | 26 years | 3 of 100 (Routine) |
| 13 November 1949 | Canyon Ferry, US | daily high max | 17.2 C (63.0 F) | 2.2 C (4.0 F) | 43 years | 20 of 100 (Routine) |
Climate Trend
49 complete years, 1899 to 1949| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1899 | 5.7 C | -0.76 C |
| 1901 | 7.7 C | +1.21 C |
| 1902 | 6.9 C | +0.41 C |
| 1903 | 6.2 C | -0.32 C |
| 1904 | 7.1 C | +0.58 C |
| 1905 | 6.2 C | -0.26 C |
| 1906 | 6.7 C | +0.25 C |
| 1907 | 5.9 C | -0.61 C |
| 1908 | 6.7 C | +0.23 C |
| 1909 | 5.7 C | -0.76 C |
| 1910 | 7.2 C | +0.73 C |
| 1911 | 5.4 C | -1.07 C |
| 1912 | 6.2 C | -0.26 C |
| 1913 | 6.2 C | -0.26 C |
| 1914 | 7.5 C | +1.02 C |
| 1915 | 8.1 C | +1.64 C |
| 1916 | 4.7 C | -1.78 C |
| 1917 | 5.7 C | -0.74 C |
| 1918 | 6.9 C | +0.42 C |
| 1919 | 6.0 C | -0.49 C |
| 1921 | 7.5 C | +1.02 C |
| 1922 | 5.9 C | -0.54 C |
| 1923 | 7.3 C | +0.79 C |
| 1924 | 6.7 C | +0.23 C |
| 1925 | 8.1 C | +1.64 C |
| 1926 | 7.4 C | +0.95 C |
| 1927 | 6.2 C | -0.24 C |
| 1928 | 4.8 C | -1.65 C |
| 1929 | 4.4 C | -2.12 C |
| 1930 | 4.3 C | -2.20 C |
| 1931 | 6.0 C | -0.46 C |
| 1932 | 7.1 C | +0.62 C |
| 1933 | 7.6 C | +1.16 C |
| 1934 | 9.1 C | +2.58 C |
| 1935 | 6.8 C | +0.28 C |
| 1936 | 6.9 C | +0.39 C |
| 1937 | 6.1 C | -0.39 C |
| 1938 | 6.3 C | -0.19 C |
| 1939 | 6.9 C | +0.45 C |
| 1940 | 7.3 C | +0.78 C |
| 1941 | 7.0 C | +0.55 C |
| 1942 | 5.2 C | -1.24 C |
| 1943 | 5.4 C | -1.10 C |
| 1944 | 6.1 C | -0.40 C |
| 1945 | 6.9 C | +0.37 C |
| 1946 | 7.3 C | +0.83 C |
| 1947 | 6.6 C | +0.08 C |
| 1948 | 5.8 C | -0.69 C |
| 1949 | 5.9 C | -0.62 C |
The fitted trend in annual mean temperature here over 1899 to 1949 is -0.02 C (-0.21 to 0.18) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.03 F (-0.38 to 0.32) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.02 C (-0.21 to 0.18) per decade | -0.03 F (-0.38 to 0.32) per decade | 1899 to 1949 | 49 | Not clearly different from zero |
| Mean daily maximum | 0.01 C (-0.21 to 0.22) per decade | 0.01 F (-0.38 to 0.40) per decade | 1899 to 1949 | 49 | Not clearly different from zero |
| Mean daily minimum | -0.04 C (-0.24 to 0.15) per decade | -0.1 F (-0.4 to 0.3) per decade | 1899 to 1949 | 49 | 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
1898 to 1953| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.0 C (104.0 F) | 1901 | 35.6 C (96.1 F) | 54 |
| Coldest night (TNn) | -40.6 C (-41.1 F) | 1927 | -32.2 C (-26.0 F) | 54 |
| Wettest day (Rx1day) | 92.7 mm (3.6 in) | 1900 | 25.4 mm (1.0 in) | 53 |
| Wettest five days (Rx5day) | 114.2 mm (4.5 in) | 1900 | 38.5 mm (1.5 in) | 52 |
| Longest dry spell (CDD) | 64 days | 1921 | 36 days | 53 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1898 | 13.3 C (55.9 F) |
| 1899 | 35.6 C (96.1 F) |
| 1900 | 39.4 C (102.9 F) |
| 1901 | 40.0 C (104.0 F) |
| 1902 | 35.0 C (95.0 F) |
| 1903 | 35.6 C (96.1 F) |
| 1904 | 35.6 C (96.1 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 32.2 C (90.0 F) |
| 1908 | 37.8 C (100.0 F) |
| 1909 | 36.1 C (97.0 F) |
| 1910 | 36.7 C (98.1 F) |
| 1911 | 33.3 C (91.9 F) |
| 1912 | 35.6 C (96.1 F) |
| 1913 | 33.9 C (93.0 F) |
| 1914 | 35.6 C (96.1 F) |
| 1915 | 34.4 C (93.9 F) |
| 1916 | 33.9 C (93.0 F) |
| 1917 | 36.7 C (98.1 F) |
| 1918 | 36.1 C (97.0 F) |
| 1919 | 38.3 C (100.9 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 38.3 C (100.9 F) |
| 1922 | 35.0 C (95.0 F) |
| 1923 | 36.7 C (98.1 F) |
| 1924 | 37.8 C (100.0 F) |
| 1925 | 36.7 C (98.1 F) |
| 1926 | 36.7 C (98.1 F) |
| 1927 | 34.4 C (93.9 F) |
| 1928 | 36.7 C (98.1 F) |
| 1929 | 38.3 C (100.9 F) |
| 1930 | 34.4 C (93.9 F) |
| 1931 | 37.8 C (100.0 F) |
| 1932 | 35.6 C (96.1 F) |
| 1933 | 38.9 C (102.0 F) |
| 1934 | 38.3 C (100.9 F) |
| 1935 | 39.4 C (102.9 F) |
| 1936 | 40.0 C (104.0 F) |
| 1937 | 40.0 C (104.0 F) |
| 1938 | 34.4 C (93.9 F) |
| 1939 | 34.4 C (93.9 F) |
| 1940 | 35.6 C (96.1 F) |
| 1941 | 36.1 C (97.0 F) |
| 1942 | 33.3 C (91.9 F) |
| 1943 | 33.3 C (91.9 F) |
| 1944 | 31.7 C (89.1 F) |
| 1945 | 33.3 C (91.9 F) |
| 1946 | 35.0 C (95.0 F) |
| 1947 | 33.3 C (91.9 F) |
| 1948 | 34.4 C (93.9 F) |
| 1949 | 36.1 C (97.0 F) |
| 1950 | 17.8 C (64.0 F) |
| 1953 | 15.6 C (60.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1898 | -26.1 C (-15.0 F) |
| 1899 | -36.7 C (-34.1 F) |
| 1900 | -31.7 C (-25.1 F) |
| 1901 | -25.0 C (-13.0 F) |
| 1902 | -28.3 C (-18.9 F) |
| 1903 | -30.6 C (-23.1 F) |
| 1904 | -26.1 C (-15.0 F) |
| 1905 | -36.1 C (-33.0 F) |
| 1906 | -31.7 C (-25.1 F) |
| 1907 | -32.2 C (-26.0 F) |
| 1908 | -27.8 C (-18.0 F) |
| 1909 | -37.8 C (-36.0 F) |
| 1910 | -36.7 C (-34.1 F) |
| 1911 | -31.7 C (-25.1 F) |
| 1912 | -29.4 C (-20.9 F) |
| 1913 | -30.0 C (-22.0 F) |
| 1914 | -32.2 C (-26.0 F) |
| 1915 | -25.6 C (-14.1 F) |
| 1916 | -39.4 C (-38.9 F) |
| 1917 | -31.1 C (-24.0 F) |
| 1918 | -33.9 C (-29.0 F) |
| 1919 | -38.9 C (-38.0 F) |
| 1920 | -29.4 C (-20.9 F) |
| 1921 | -27.8 C (-18.0 F) |
| 1922 | -33.3 C (-27.9 F) |
| 1923 | -33.3 C (-27.9 F) |
| 1924 | -36.1 C (-33.0 F) |
| 1925 | -20.0 C (-4.0 F) |
| 1926 | -27.2 C (-17.0 F) |
| 1927 | -40.6 C (-41.1 F) |
| 1928 | -32.2 C (-26.0 F) |
| 1929 | -37.2 C (-35.0 F) |
| 1930 | -36.7 C (-34.1 F) |
| 1931 | -24.4 C (-11.9 F) |
| 1932 | -32.8 C (-27.0 F) |
| 1933 | -37.8 C (-36.0 F) |
| 1934 | -23.9 C (-11.0 F) |
| 1935 | -35.0 C (-31.0 F) |
| 1936 | -40.0 C (-40.0 F) |
| 1937 | -38.3 C (-36.9 F) |
| 1938 | -33.9 C (-29.0 F) |
| 1939 | -36.7 C (-34.1 F) |
| 1940 | -32.8 C (-27.0 F) |
| 1941 | -26.7 C (-16.1 F) |
| 1942 | -38.3 C (-36.9 F) |
| 1943 | -36.1 C (-33.0 F) |
| 1944 | -32.8 C (-27.0 F) |
| 1945 | -27.2 C (-17.0 F) |
| 1946 | -27.8 C (-18.0 F) |
| 1947 | -27.2 C (-17.0 F) |
| 1948 | -31.1 C (-24.0 F) |
| 1949 | -36.1 C (-33.0 F) |
| 1950 | -35.6 C (-32.1 F) |
| 1953 | -1.7 C (28.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1898 | n/a |
| 1899 | 15.2 mm (0.6 in) |
| 1900 | 92.7 mm (3.6 in) |
| 1901 | 33.8 mm (1.3 in) |
| 1902 | 45.0 mm (1.8 in) |
| 1903 | 25.4 mm (1.0 in) |
| 1904 | 17.5 mm (0.7 in) |
| 1905 | 22.9 mm (0.9 in) |
| 1906 | 33.5 mm (1.3 in) |
| 1907 | 48.3 mm (1.9 in) |
| 1908 | 63.5 mm (2.5 in) |
| 1909 | 24.9 mm (1.0 in) |
| 1910 | 39.4 mm (1.6 in) |
| 1911 | 26.9 mm (1.1 in) |
| 1912 | 20.6 mm (0.8 in) |
| 1913 | 37.6 mm (1.5 in) |
| 1914 | 27.7 mm (1.1 in) |
| 1915 | 38.1 mm (1.5 in) |
| 1916 | 23.9 mm (0.9 in) |
| 1917 | 29.0 mm (1.1 in) |
| 1918 | 18.0 mm (0.7 in) |
| 1919 | 22.9 mm (0.9 in) |
| 1920 | 25.4 mm (1.0 in) |
| 1921 | 23.1 mm (0.9 in) |
| 1922 | 31.8 mm (1.3 in) |
| 1923 | 39.4 mm (1.6 in) |
| 1924 | 15.0 mm (0.6 in) |
| 1925 | 31.2 mm (1.2 in) |
| 1926 | 24.6 mm (1.0 in) |
| 1927 | 43.7 mm (1.7 in) |
| 1928 | 15.2 mm (0.6 in) |
| 1929 | 28.4 mm (1.1 in) |
| 1930 | 20.3 mm (0.8 in) |
| 1931 | 16.8 mm (0.7 in) |
| 1932 | 28.2 mm (1.1 in) |
| 1933 | 43.7 mm (1.7 in) |
| 1934 | 16.0 mm (0.6 in) |
| 1935 | 10.7 mm (0.4 in) |
| 1936 | 19.6 mm (0.8 in) |
| 1937 | 32.3 mm (1.3 in) |
| 1938 | 22.4 mm (0.9 in) |
| 1939 | 16.0 mm (0.6 in) |
| 1940 | 20.3 mm (0.8 in) |
| 1941 | 27.4 mm (1.1 in) |
| 1942 | 22.4 mm (0.9 in) |
| 1943 | 25.9 mm (1.0 in) |
| 1944 | 23.6 mm (0.9 in) |
| 1945 | 30.2 mm (1.2 in) |
| 1946 | 24.1 mm (0.9 in) |
| 1947 | 41.9 mm (1.6 in) |
| 1948 | 50.8 mm (2.0 in) |
| 1949 | 16.5 mm (0.6 in) |
| 1950 | 10.2 mm (0.4 in) |
| 1953 | 0.0 mm (0.00 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1898 | n/a |
| 1899 | 25.7 mm (1.0 in) |
| 1900 | 114.2 mm (4.5 in) |
| 1901 | 43.2 mm (1.7 in) |
| 1902 | 64.6 mm (2.5 in) |
| 1903 | 38.6 mm (1.5 in) |
| 1904 | 21.8 mm (0.9 in) |
| 1905 | 27.2 mm (1.1 in) |
| 1906 | 53.7 mm (2.1 in) |
| 1907 | 81.6 mm (3.2 in) |
| 1908 | 89.1 mm (3.5 in) |
| 1909 | 30.7 mm (1.2 in) |
| 1910 | 51.1 mm (2.0 in) |
| 1911 | 34.8 mm (1.4 in) |
| 1912 | 32.8 mm (1.3 in) |
| 1913 | 47.0 mm (1.9 in) |
| 1914 | 40.2 mm (1.6 in) |
| 1915 | 56.9 mm (2.2 in) |
| 1916 | 58.0 mm (2.3 in) |
| 1917 | 30.8 mm (1.2 in) |
| 1918 | 29.0 mm (1.1 in) |
| 1919 | 25.4 mm (1.0 in) |
| 1920 | 27.4 mm (1.1 in) |
| 1921 | 28.0 mm (1.1 in) |
| 1922 | 41.4 mm (1.6 in) |
| 1923 | 69.9 mm (2.8 in) |
| 1924 | 19.5 mm (0.8 in) |
| 1925 | 35.3 mm (1.4 in) |
| 1926 | 54.2 mm (2.1 in) |
| 1927 | 52.3 mm (2.1 in) |
| 1928 | 27.9 mm (1.1 in) |
| 1929 | 30.3 mm (1.2 in) |
| 1930 | 24.6 mm (1.0 in) |
| 1931 | 30.2 mm (1.2 in) |
| 1932 | 31.0 mm (1.2 in) |
| 1933 | 54.2 mm (2.1 in) |
| 1934 | 33.5 mm (1.3 in) |
| 1935 | 25.5 mm (1.0 in) |
| 1936 | 34.0 mm (1.3 in) |
| 1937 | 40.8 mm (1.6 in) |
| 1938 | 63.1 mm (2.5 in) |
| 1939 | 33.4 mm (1.3 in) |
| 1940 | 26.2 mm (1.0 in) |
| 1941 | 51.0 mm (2.0 in) |
| 1942 | 43.0 mm (1.7 in) |
| 1943 | 67.1 mm (2.6 in) |
| 1944 | 62.5 mm (2.5 in) |
| 1945 | 40.8 mm (1.6 in) |
| 1946 | 31.8 mm (1.3 in) |
| 1947 | 82.3 mm (3.2 in) |
| 1948 | 67.6 mm (2.7 in) |
| 1949 | 38.4 mm (1.5 in) |
| 1950 | 12.6 mm (0.5 in) |
| 1953 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1898 | n/a |
| 1899 | 44 days |
| 1900 | 40 days |
| 1901 | 40 days |
| 1902 | 31 days |
| 1903 | 32 days |
| 1904 | 52 days |
| 1905 | 40 days |
| 1906 | 26 days |
| 1907 | 35 days |
| 1908 | 40 days |
| 1909 | 24 days |
| 1910 | 37 days |
| 1911 | 31 days |
| 1912 | 51 days |
| 1913 | 32 days |
| 1914 | 24 days |
| 1915 | 51 days |
| 1916 | 33 days |
| 1917 | 37 days |
| 1918 | 46 days |
| 1919 | 36 days |
| 1920 | 44 days |
| 1921 | 64 days |
| 1922 | 42 days |
| 1923 | 40 days |
| 1924 | 25 days |
| 1925 | 39 days |
| 1926 | 31 days |
| 1927 | 21 days |
| 1928 | 63 days |
| 1929 | 37 days |
| 1930 | 47 days |
| 1931 | 29 days |
| 1932 | 40 days |
| 1933 | 28 days |
| 1934 | 44 days |
| 1935 | 47 days |
| 1936 | 29 days |
| 1937 | 44 days |
| 1938 | 28 days |
| 1939 | 43 days |
| 1940 | 33 days |
| 1941 | 32 days |
| 1942 | 25 days |
| 1943 | 31 days |
| 1944 | 36 days |
| 1945 | 29 days |
| 1946 | 64 days |
| 1947 | 17 days |
| 1948 | 37 days |
| 1949 | 35 days |
| 1950 | 15 days |
| 1953 | 1 day |
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
49 years with a frostAcross 49 years with a frost, the median last spring frost at Canyon Ferry falls on 15 May and the median first autumn frost on 20 September, which leaves a median of 127 days between them.
Fitted over all years, the growing season changes by -2.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1919 to 1949) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 May | n/a | 17 May | n/a | +2.7 days per decade |
| First autumn frost | 20 September | n/a | 22 September | n/a | -0.2 days per decade |
| Growing days | 127 days | n/a | 125 days | n/a | -2.9 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
50 years, 1899 to 1949A day with at least 25.8 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 83.4 mm (3.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 25.8 mm (1.0 in) | |
| 5 years | 37.1 mm (1.5 in) | |
| 10 years | 45.9 mm (1.8 in) | |
| 25 years | 59.1 mm (2.3 in) | |
| 50 years | 70.5 mm (2.8 in) | |
| 100 years | 83.4 mm (3.3 in) | Longer than the 50 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, 50 years of values from 1899 to 1949.
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: 92.7 mm (3.6 in) in 1900; 63.5 mm (2.5 in) in 1908; 50.8 mm (2.0 in) in 1948.
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 (2025-12-31).