Deer Lodge Weather Records (USC00242273)
Record envelope, standing records and threshold days for Deer Lodge (USC00242273), Montana, United States, with 67 years of record.
Key Facts for Deer Lodge
- Deer Lodge (USC00242273) is a weather station in Montana, United States at 46.38 latitude and -112.73 longitude, 1,382 m (4,534 ft) above sea level.
- The station reports from 1893 to 1959, 67 years of record.
- 1,464 records set at Deer Lodge still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Deer Lodge tied a daily record snow depth of 20.3 cm (8.0 in) on 5 February 1959.
About the Station
- Location: Montana, United States, 46.38 latitude, -112.73 longitude.
- Elevation: 1,382 m (4,534 ft).
- Period of record: 1893 to 1959, 67 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 15.6 C (60.1 F) | -39.4 C (-38.9 F) | n/a | n/a |
| Feb | 20.6 C (69.1 F) | -40.6 C (-41.1 F) | n/a | n/a |
| Mar | 22.8 C (73.0 F) | -33.3 C (-27.9 F) | n/a | n/a |
| Apr | 28.9 C (84.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| May | 34.4 C (93.9 F) | -9.4 C (15.1 F) | n/a | n/a |
| Jun | 37.8 C (100.0 F) | -3.9 C (25.0 F) | n/a | n/a |
| Jul | 42.2 C (108.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Aug | 39.4 C (102.9 F) | -2.8 C (27.0 F) | n/a | n/a |
| Sep | 37.2 C (99.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Oct | 29.4 C (84.9 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Nov | 20.6 C (69.1 F) | -34.4 C (-29.9 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -41.1 C (-42.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 19 |
| 1894 | 14 |
| 1895 | 28 |
| 1896 | 37 |
| 1897 | 15 |
| 1898 | 9 |
| 1899 | 59 |
| 1900 | 2 |
| 1901 | 44 |
| 1902 | 22 |
| 1903 | 19 |
| 1904 | 9 |
| 1905 | 14 |
| 1906 | 17 |
| 1916 | 52 |
| 1917 | 39 |
| 1918 | 47 |
| 1919 | 64 |
| 1920 | 25 |
| 1921 | 34 |
| 1922 | 25 |
| 1923 | 21 |
| 1924 | 12 |
| 1928 | 5 |
| 1929 | 40 |
| 1930 | 7 |
| 1931 | 42 |
| 1932 | 43 |
| 1933 | 36 |
| 1934 | 32 |
| 1935 | 31 |
| 1936 | 61 |
| 1937 | 29 |
| 1938 | 18 |
| 1939 | 28 |
| 1940 | 27 |
| 1941 | 27 |
| 1942 | 22 |
| 1943 | 26 |
| 1944 | 23 |
| 1945 | 25 |
| 1946 | 20 |
| 1947 | 23 |
| 1948 | 21 |
| 1949 | 31 |
| 1950 | 29 |
| 1951 | 27 |
| 1952 | 18 |
| 1953 | 27 |
| 1954 | 25 |
| 1955 | 29 |
| 1956 | 19 |
| 1957 | 26 |
| 1958 | 17 |
| 1959 | 3 |
Wettest Day of Each Month
May: 50.8 mm (2.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 20.3 mm (0.8 in) | 6 January 1923 |
| Feb | 25.4 mm (1.0 in) | 11 February 1931 |
| Mar | 19.3 mm (0.8 in) | 22 March 1920 |
| Apr | 25.4 mm (1.0 in) | 22 April 1899 |
| May | 50.8 mm (2.0 in) | 19 May 1938 |
| Jun | 43.7 mm (1.7 in) | 12 June 1921 |
| Jul | 38.1 mm (1.5 in) | 13 July 1901 |
| Aug | 44.7 mm (1.8 in) | 21 August 1933 |
| Sep | 38.1 mm (1.5 in) | 3 September 1901 |
| Oct | 38.1 mm (1.5 in) | 2 October 1893 |
| Nov | 38.1 mm (1.5 in) | 23 November 1921 |
| Dec | 17.8 mm (0.7 in) | 31 December 1920 |
Period of Record Coverage
1893 to 1959| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 253 | 69% | No |
| 1894 | 145 | 40% | No |
| 1895 | 223 | 61% | No |
| 1896 | 215 | 59% | No |
| 1897 | 203 | 56% | No |
| 1898 | 120 | 33% | No |
| 1899 | 360 | 99% | Yes |
| 1900 | 31 | 8% | No |
| 1901 | 140 | 38% | No |
| 1902 | 336 | 92% | Yes |
| 1903 | 357 | 98% | Yes |
| 1904 | 347 | 95% | Yes |
| 1905 | 210 | 58% | No |
| 1906 | 147 | 40% | No |
| 1916 | 283 | 77% | No |
| 1917 | 365 | 100% | Yes |
| 1918 | 346 | 95% | Yes |
| 1919 | 329 | 90% | Yes |
| 1920 | 356 | 97% | Yes |
| 1921 | 327 | 90% | No |
| 1922 | 362 | 99% | Yes |
| 1923 | 345 | 95% | Yes |
| 1924 | 151 | 41% | No |
| 1928 | 87 | 24% | No |
| 1929 | 362 | 99% | Yes |
| 1930 | 153 | 42% | No |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 363 | 99% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 360 | 98% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 363 | 99% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 363 | 99% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 361 | 99% | Yes |
| 1957 | 301 | 82% | No |
| 1958 | 362 | 99% | Yes |
| 1959 | 59 | 16% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 5 February 1959 | Deer Lodge, US | daily snow depth (Tie) | 20.3 cm (8.0 in) | tie | 9 years | 1 of 100 (Routine) |
| 4 February 1959 | Deer Lodge, US | daily rain | 14.5 mm (0.6 in) | 10.9 mm (0.4 in) | 45 years | 20 of 100 (Routine) |
| 24 January 1959 | Deer Lodge, US | daily high min | 2.8 C (37.0 F) | 1.1 C (2.0 F) | 24 years | 14 of 100 (Routine) |
| 10 January 1959 | Deer Lodge, US | daily high min | 0.6 C (33.1 F) | 1.2 C (2.2 F) | 5 years | 8 of 100 (Routine) |
| 3 January 1959 | Deer Lodge, US | daily low max | -20.6 C (-5.1 F) | 5.0 C (9.0 F) | 8 years | 15 of 100 (Routine) |
| 4 December 1958 | Deer Lodge, US | daily rain (Tie) | 3.8 mm (0.15 in) | tie | 1 year | 1 of 100 (Routine) |
| 3 December 1958 | Deer Lodge, US | daily high min (Tie) | 3.3 C (37.9 F) | tie | 15 years | 2 of 100 (Routine) |
| 1 December 1958 | Deer Lodge, US | daily high max | 12.2 C (54.0 F) | 0.5 C (0.9 F) | 16 years | 11 of 100 (Routine) |
| 20 November 1958 | Deer Lodge, US | daily high max (Tie) | 12.2 C (54.0 F) | tie | 52 years | 5 of 100 (Routine) |
| 17 October 1958 | Deer Lodge, US | daily high max | 22.2 C (72.0 F) | 1.1 C (2.0 F) | 3 years | 7 of 100 (Routine) |
| 14 October 1958 | Deer Lodge, US | daily high max | 27.8 C (82.0 F) | 3.4 C (6.1 F) | 8 years | 13 of 100 (Routine) |
| 5 October 1958 | Deer Lodge, US | daily high max (Tie) | 26.7 C (80.1 F) | tie | 37 years | 4 of 100 (Routine) |
| 29 September 1958 | Deer Lodge, US | daily high min | 9.4 C (48.9 F) | 0.5 C (0.9 F) | 17 years | 12 of 100 (Routine) |
| 11 September 1958 | Deer Lodge, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 58 years | 24 of 100 (Routine) |
| 8 September 1958 | Deer Lodge, US | daily high max | 33.3 C (91.9 F) | 3.9 C (7.0 F) | 53 years | 28 of 100 (Routine) |
| 3 September 1958 | Deer Lodge, US | daily low min | -2.2 C (28.0 F) | 1.1 C (2.0 F) | 58 years | 25 of 100 (Routine) |
| 26 August 1958 | Deer Lodge, US | daily high min | 12.8 C (55.0 F) | 2.2 C (4.0 F) | 20 years | 18 of 100 (Routine) |
| 18 August 1958 | Deer Lodge, US | daily high min | 15.6 C (60.1 F) | 3.4 C (6.1 F) | 27 years | 23 of 100 (Routine) |
| 15 July 1958 | Deer Lodge, US | daily low min (Tie) | 1.7 C (35.1 F) | tie | 55 years | 5 of 100 (Routine) |
| 14 July 1958 | Deer Lodge, US | daily low max | 16.1 C (61.0 F) | 2.2 C (4.0 F) | 40 years | 22 of 100 (Routine) |
Climate Trend
34 complete years, 1899 to 1958| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1899 | 4.8 C | -0.91 C |
| 1903 | 4.4 C | -1.31 C |
| 1904 | 5.5 C | -0.22 C |
| 1917 | 4.4 C | -1.26 C |
| 1920 | 5.1 C | -0.64 C |
| 1922 | 4.4 C | -1.26 C |
| 1929 | 4.4 C | -1.28 C |
| 1931 | 6.4 C | +0.68 C |
| 1932 | 5.1 C | -0.56 C |
| 1933 | 6.3 C | +0.55 C |
| 1934 | 8.0 C | +2.33 C |
| 1935 | 5.8 C | +0.05 C |
| 1936 | 5.9 C | +0.19 C |
| 1937 | 4.9 C | -0.77 C |
| 1938 | 6.4 C | +0.70 C |
| 1939 | 6.7 C | +0.99 C |
| 1940 | 7.3 C | +1.56 C |
| 1941 | 6.6 C | +0.86 C |
| 1942 | 5.4 C | -0.33 C |
| 1943 | 5.7 C | -0.01 C |
| 1944 | 6.0 C | +0.32 C |
| 1945 | 6.6 C | +0.88 C |
| 1946 | 6.9 C | +1.20 C |
| 1947 | 6.3 C | +0.61 C |
| 1948 | 4.7 C | -1.05 C |
| 1949 | 4.8 C | -0.94 C |
| 1950 | 4.9 C | -0.82 C |
| 1951 | 4.5 C | -1.20 C |
| 1952 | 5.5 C | -0.19 C |
| 1953 | 7.3 C | +1.59 C |
| 1954 | 6.3 C | +0.60 C |
| 1955 | 4.3 C | -1.38 C |
| 1956 | 5.7 C | -0.05 C |
| 1958 | 6.7 C | +0.97 C |
The fitted trend in annual mean temperature here over 1899 to 1958 is 0.20 C (-0.02 to 0.42) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.36 F (-0.04 to 0.76) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.20 C (-0.02 to 0.42) per decade | 0.36 F (-0.04 to 0.76) per decade | 1899 to 1958 | 34 | Not clearly different from zero |
| Mean daily maximum | 0.2 C (-0.1 to 0.4) per decade | 0.3 F (-0.2 to 0.7) per decade | 1899 to 1958 | 34 | Not clearly different from zero |
| Mean daily minimum | 0.25 C (0.02 to 0.48) per decade | 0.45 F (0.03 to 0.87) per decade | 1899 to 1958 | 34 | 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
1893 to 1959| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1901 | 34.4 C (93.9 F) | 55 |
| Coldest night (TNn) | -41.1 C (-42.0 F) | 1919 | -32.8 C (-27.0 F) | 55 |
| Wettest day (Rx1day) | 50.8 mm (2.0 in) | 1938 | 19.8 mm (0.8 in) | 57 |
| Wettest five days (Rx5day) | 85.1 mm (3.4 in) | 1938 | 32.7 mm (1.3 in) | 57 |
| Longest dry spell (CDD) | 93 days | 1954 | 36 days | 57 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 31.7 C (89.1 F) |
| 1894 | 26.7 C (80.1 F) |
| 1895 | 28.3 C (82.9 F) |
| 1896 | 29.4 C (84.9 F) |
| 1897 | 30.0 C (86.0 F) |
| 1898 | 16.1 C (61.0 F) |
| 1899 | 36.1 C (97.0 F) |
| 1900 | 15.6 C (60.1 F) |
| 1901 | 42.2 C (108.0 F) |
| 1902 | 30.0 C (86.0 F) |
| 1903 | 31.1 C (88.0 F) |
| 1904 | 31.1 C (88.0 F) |
| 1905 | 26.7 C (80.1 F) |
| 1906 | 25.6 C (78.1 F) |
| 1912 | n/a |
| 1913 | n/a |
| 1916 | 31.7 C (89.1 F) |
| 1917 | 34.4 C (93.9 F) |
| 1918 | 33.3 C (91.9 F) |
| 1919 | 39.4 C (102.9 F) |
| 1920 | 34.4 C (93.9 F) |
| 1921 | 35.0 C (95.0 F) |
| 1922 | 33.3 C (91.9 F) |
| 1923 | 34.4 C (93.9 F) |
| 1924 | 26.7 C (80.1 F) |
| 1928 | 26.1 C (79.0 F) |
| 1929 | 37.8 C (100.0 F) |
| 1930 | 34.4 C (93.9 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 34.4 C (93.9 F) |
| 1933 | 37.2 C (99.0 F) |
| 1934 | 36.1 C (97.0 F) |
| 1935 | 36.7 C (98.1 F) |
| 1936 | 37.8 C (100.0 F) |
| 1937 | 36.1 C (97.0 F) |
| 1938 | 32.2 C (90.0 F) |
| 1939 | 35.6 C (96.1 F) |
| 1940 | 37.2 C (99.0 F) |
| 1941 | 35.0 C (95.0 F) |
| 1942 | 34.4 C (93.9 F) |
| 1943 | 33.3 C (91.9 F) |
| 1944 | 32.8 C (91.0 F) |
| 1945 | 34.4 C (93.9 F) |
| 1946 | 35.0 C (95.0 F) |
| 1947 | 34.4 C (93.9 F) |
| 1948 | 33.9 C (93.0 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 33.9 C (93.0 F) |
| 1952 | 33.9 C (93.0 F) |
| 1953 | 36.1 C (97.0 F) |
| 1954 | 36.1 C (97.0 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 33.9 C (93.0 F) |
| 1957 | 31.7 C (89.1 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 11.1 C (52.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -31.7 C (-25.1 F) |
| 1894 | -35.6 C (-32.1 F) |
| 1895 | -36.1 C (-33.0 F) |
| 1896 | -34.4 C (-29.9 F) |
| 1897 | -36.1 C (-33.0 F) |
| 1898 | -26.1 C (-15.0 F) |
| 1899 | -40.6 C (-41.1 F) |
| 1900 | -18.9 C (-2.0 F) |
| 1901 | -32.8 C (-27.0 F) |
| 1902 | -36.1 C (-33.0 F) |
| 1903 | -30.6 C (-23.1 F) |
| 1904 | -23.3 C (-9.9 F) |
| 1905 | -37.2 C (-35.0 F) |
| 1906 | -28.9 C (-20.0 F) |
| 1912 | n/a |
| 1913 | n/a |
| 1916 | -35.6 C (-32.1 F) |
| 1917 | -32.8 C (-27.0 F) |
| 1918 | -35.6 C (-32.1 F) |
| 1919 | -41.1 C (-42.0 F) |
| 1920 | -33.3 C (-27.9 F) |
| 1921 | -31.1 C (-24.0 F) |
| 1922 | -30.6 C (-23.1 F) |
| 1923 | -30.0 C (-22.0 F) |
| 1924 | -31.7 C (-25.1 F) |
| 1928 | -25.6 C (-14.1 F) |
| 1929 | -38.3 C (-36.9 F) |
| 1930 | -18.3 C (-0.9 F) |
| 1931 | -24.4 C (-11.9 F) |
| 1932 | -37.2 C (-35.0 F) |
| 1933 | -38.3 C (-36.9 F) |
| 1934 | -23.9 C (-11.0 F) |
| 1935 | -34.4 C (-29.9 F) |
| 1936 | -38.3 C (-36.9 F) |
| 1937 | -36.7 C (-34.1 F) |
| 1938 | -30.0 C (-22.0 F) |
| 1939 | -33.3 C (-27.9 F) |
| 1940 | -24.4 C (-11.9 F) |
| 1941 | -26.7 C (-16.1 F) |
| 1942 | -37.2 C (-35.0 F) |
| 1943 | -35.0 C (-31.0 F) |
| 1944 | -31.7 C (-25.1 F) |
| 1945 | -28.9 C (-20.0 F) |
| 1946 | -26.1 C (-15.0 F) |
| 1947 | -27.2 C (-17.0 F) |
| 1948 | -28.9 C (-20.0 F) |
| 1949 | -36.7 C (-34.1 F) |
| 1950 | -31.7 C (-25.1 F) |
| 1951 | -35.6 C (-32.1 F) |
| 1952 | -26.1 C (-15.0 F) |
| 1953 | -22.8 C (-9.0 F) |
| 1954 | -35.6 C (-32.1 F) |
| 1955 | -32.8 C (-27.0 F) |
| 1956 | -34.4 C (-29.9 F) |
| 1957 | -39.4 C (-38.9 F) |
| 1958 | -23.3 C (-9.9 F) |
| 1959 | -31.7 C (-25.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 38.1 mm (1.5 in) |
| 1894 | 15.2 mm (0.6 in) |
| 1895 | 8.9 mm (0.35 in) |
| 1896 | 19.1 mm (0.8 in) |
| 1897 | 11.4 mm (0.4 in) |
| 1898 | 17.8 mm (0.7 in) |
| 1899 | 25.4 mm (1.0 in) |
| 1900 | 0.5 mm (0.02 in) |
| 1901 | 38.1 mm (1.5 in) |
| 1902 | 1.3 mm (0.05 in) |
| 1903 | 25.4 mm (1.0 in) |
| 1904 | 0.3 mm (0.01 in) |
| 1905 | 5.6 mm (0.22 in) |
| 1906 | 11.4 mm (0.4 in) |
| 1912 | 14.0 mm (0.6 in) |
| 1913 | 29.0 mm (1.1 in) |
| 1916 | 19.8 mm (0.8 in) |
| 1917 | 22.9 mm (0.9 in) |
| 1918 | 29.2 mm (1.1 in) |
| 1919 | 11.4 mm (0.4 in) |
| 1920 | 19.3 mm (0.8 in) |
| 1921 | 49.5 mm (1.9 in) |
| 1922 | 33.0 mm (1.3 in) |
| 1923 | 27.9 mm (1.1 in) |
| 1924 | 9.9 mm (0.39 in) |
| 1928 | 5.1 mm (0.20 in) |
| 1929 | 11.9 mm (0.5 in) |
| 1930 | 17.8 mm (0.7 in) |
| 1931 | 25.4 mm (1.0 in) |
| 1932 | 17.3 mm (0.7 in) |
| 1933 | 44.7 mm (1.8 in) |
| 1934 | 22.9 mm (0.9 in) |
| 1935 | 15.2 mm (0.6 in) |
| 1936 | 13.7 mm (0.5 in) |
| 1937 | 25.7 mm (1.0 in) |
| 1938 | 50.8 mm (2.0 in) |
| 1939 | 19.8 mm (0.8 in) |
| 1940 | 15.7 mm (0.6 in) |
| 1941 | 22.4 mm (0.9 in) |
| 1942 | 25.4 mm (1.0 in) |
| 1943 | 17.3 mm (0.7 in) |
| 1944 | 34.8 mm (1.4 in) |
| 1945 | 19.8 mm (0.8 in) |
| 1946 | 26.2 mm (1.0 in) |
| 1947 | 41.4 mm (1.6 in) |
| 1948 | 14.0 mm (0.6 in) |
| 1949 | 29.5 mm (1.2 in) |
| 1950 | 23.6 mm (0.9 in) |
| 1951 | 24.4 mm (1.0 in) |
| 1952 | 21.8 mm (0.9 in) |
| 1953 | 31.8 mm (1.3 in) |
| 1954 | 12.2 mm (0.5 in) |
| 1955 | 22.1 mm (0.9 in) |
| 1956 | 19.1 mm (0.8 in) |
| 1957 | 21.8 mm (0.9 in) |
| 1958 | 15.7 mm (0.6 in) |
| 1959 | 14.5 mm (0.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 58.5 mm (2.3 in) |
| 1894 | 18.5 mm (0.7 in) |
| 1895 | 21.8 mm (0.9 in) |
| 1896 | 27.0 mm (1.1 in) |
| 1897 | 16.0 mm (0.6 in) |
| 1898 | 30.0 mm (1.2 in) |
| 1899 | 36.8 mm (1.4 in) |
| 1900 | 0.5 mm (0.02 in) |
| 1901 | 63.5 mm (2.5 in) |
| 1902 | 1.6 mm (0.06 in) |
| 1903 | 38.7 mm (1.5 in) |
| 1904 | 0.3 mm (0.01 in) |
| 1905 | 15.8 mm (0.6 in) |
| 1906 | 15.5 mm (0.6 in) |
| 1912 | 27.4 mm (1.1 in) |
| 1913 | 38.1 mm (1.5 in) |
| 1916 | 38.4 mm (1.5 in) |
| 1917 | 33.1 mm (1.3 in) |
| 1918 | 31.5 mm (1.2 in) |
| 1919 | 19.0 mm (0.7 in) |
| 1920 | 42.9 mm (1.7 in) |
| 1921 | 51.1 mm (2.0 in) |
| 1922 | 39.6 mm (1.6 in) |
| 1923 | 52.4 mm (2.1 in) |
| 1924 | 14.8 mm (0.6 in) |
| 1928 | 8.4 mm (0.33 in) |
| 1929 | 16.3 mm (0.6 in) |
| 1930 | 24.7 mm (1.0 in) |
| 1931 | 26.5 mm (1.0 in) |
| 1932 | 32.2 mm (1.3 in) |
| 1933 | 50.8 mm (2.0 in) |
| 1934 | 35.1 mm (1.4 in) |
| 1935 | 22.8 mm (0.9 in) |
| 1936 | 24.3 mm (1.0 in) |
| 1937 | 35.4 mm (1.4 in) |
| 1938 | 85.1 mm (3.4 in) |
| 1939 | 43.2 mm (1.7 in) |
| 1940 | 19.6 mm (0.8 in) |
| 1941 | 51.6 mm (2.0 in) |
| 1942 | 45.3 mm (1.8 in) |
| 1943 | 21.8 mm (0.9 in) |
| 1944 | 53.3 mm (2.1 in) |
| 1945 | 39.3 mm (1.5 in) |
| 1946 | 33.6 mm (1.3 in) |
| 1947 | 53.5 mm (2.1 in) |
| 1948 | 28.3 mm (1.1 in) |
| 1949 | 51.3 mm (2.0 in) |
| 1950 | 32.7 mm (1.3 in) |
| 1951 | 37.6 mm (1.5 in) |
| 1952 | 27.4 mm (1.1 in) |
| 1953 | 52.2 mm (2.1 in) |
| 1954 | 24.4 mm (1.0 in) |
| 1955 | 36.6 mm (1.4 in) |
| 1956 | 30.6 mm (1.2 in) |
| 1957 | 40.1 mm (1.6 in) |
| 1958 | 42.1 mm (1.7 in) |
| 1959 | 20.9 mm (0.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 29 days |
| 1894 | 31 days |
| 1895 | 61 days |
| 1896 | 21 days |
| 1897 | 24 days |
| 1898 | 18 days |
| 1899 | 15 days |
| 1900 | 31 days |
| 1901 | 41 days |
| 1902 | 23 days |
| 1903 | 40 days |
| 1904 | 35 days |
| 1905 | 53 days |
| 1906 | 51 days |
| 1912 | 27 days |
| 1913 | 26 days |
| 1916 | 55 days |
| 1917 | 32 days |
| 1918 | 50 days |
| 1919 | 52 days |
| 1920 | 31 days |
| 1921 | 50 days |
| 1922 | 54 days |
| 1923 | 43 days |
| 1924 | 26 days |
| 1928 | 51 days |
| 1929 | 37 days |
| 1930 | 41 days |
| 1931 | 42 days |
| 1932 | 29 days |
| 1933 | 28 days |
| 1934 | 34 days |
| 1935 | 77 days |
| 1936 | 38 days |
| 1937 | 46 days |
| 1938 | 41 days |
| 1939 | 42 days |
| 1940 | 33 days |
| 1941 | 44 days |
| 1942 | 31 days |
| 1943 | 29 days |
| 1944 | 38 days |
| 1945 | 30 days |
| 1946 | 29 days |
| 1947 | 30 days |
| 1948 | 37 days |
| 1949 | 39 days |
| 1950 | 32 days |
| 1951 | 18 days |
| 1952 | 47 days |
| 1953 | 36 days |
| 1954 | 93 days |
| 1955 | 49 days |
| 1956 | 33 days |
| 1957 | 45 days |
| 1958 | 19 days |
| 1959 | 14 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
34 years with a frostAcross 34 years with a frost, the median last spring frost at Deer Lodge falls on 6 June and the median first autumn frost on 5 September, which leaves a median of 87 days between them.
Fitted over all years, the growing season changes by +5.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1920 to 1958) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 6 June | n/a | 5 June | n/a | -1.9 days per decade |
| First autumn frost | 5 September | n/a | 6 September | n/a | +3.7 days per decade |
| Growing days | 87 days | n/a | 91 days | n/a | +5.6 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
33 years, 1917 to 1956A day with at least 23.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 61.4 mm (2.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 23.0 mm (0.9 in) | |
| 5 years | 31.9 mm (1.3 in) | |
| 10 years | 38.3 mm (1.5 in) | |
| 25 years | 47.1 mm (1.9 in) | |
| 50 years | 54.0 mm (2.1 in) | Longer than the 33 years of record |
| 100 years | 61.4 mm (2.4 in) | Longer than the 33 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, 33 years of values from 1917 to 1956.
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: 50.8 mm (2.0 in) in 1938; 49.5 mm (1.9 in) in 1921; 44.7 mm (1.8 in) in 1933.
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).