Dubuque River Weather Records (USW00014934)
Record envelope, standing records and threshold days for Dubuque River (USW00014934), Iowa, United States, with 80 years of record.
Key Facts for Dubuque River
- Dubuque River (USW00014934) is a weather station in Iowa, United States at 42.40 latitude and -90.70 longitude, 177 m (581 ft) above sea level.
- The station reports from 1873 to 1952, 80 years of record.
- 1,464 records set at Dubuque River still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dubuque River set a daily record snowfall of 14.5 cm (5.7 in) on 25 December 1951.
About the Station
- Location: Iowa, United States, 42.40 latitude, -90.70 longitude.
- Elevation: 177 m (581 ft).
- Period of record: 1873 to 1952, 80 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 | 17.2 C (63.0 F) | -35.0 C (-31.0 F) | n/a | n/a |
| Feb | 20.0 C (68.0 F) | -35.0 C (-31.0 F) | n/a | n/a |
| Mar | 30.0 C (86.0 F) | -24.4 C (-11.9 F) | n/a | n/a |
| Apr | 33.3 C (91.9 F) | -10.0 C (14.0 F) | n/a | n/a |
| May | 40.0 C (104.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Jun | 40.0 C (104.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Jul | 43.3 C (109.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Aug | 41.7 C (107.1 F) | 4.4 C (39.9 F) | n/a | n/a |
| Sep | 37.2 C (99.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Oct | 31.7 C (89.1 F) | -12.2 C (10.0 F) | n/a | n/a |
| Nov | 25.6 C (78.1 F) | -24.4 C (-11.9 F) | n/a | n/a |
| Dec | 19.4 C (66.9 F) | -30.6 C (-23.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1874 | 17 |
| 1875 | 38 |
| 1876 | 15 |
| 1877 | 29 |
| 1878 | 18 |
| 1879 | 28 |
| 1880 | 29 |
| 1881 | 8 |
| 1882 | 30 |
| 1883 | 15 |
| 1884 | 18 |
| 1885 | 16 |
| 1886 | 25 |
| 1887 | 36 |
| 1888 | 22 |
| 1889 | 23 |
| 1890 | 17 |
| 1891 | 28 |
| 1892 | 11 |
| 1893 | 14 |
| 1894 | 33 |
| 1895 | 23 |
| 1896 | 28 |
| 1897 | 27 |
| 1898 | 8 |
| 1899 | 24 |
| 1900 | 12 |
| 1901 | 24 |
| 1902 | 19 |
| 1903 | 12 |
| 1904 | 11 |
| 1905 | 10 |
| 1906 | 9 |
| 1907 | 19 |
| 1908 | 11 |
| 1909 | 24 |
| 1910 | 15 |
| 1911 | 27 |
| 1912 | 15 |
| 1913 | 20 |
| 1914 | 18 |
| 1915 | 22 |
| 1916 | 22 |
| 1917 | 24 |
| 1918 | 18 |
| 1919 | 8 |
| 1920 | 15 |
| 1921 | 17 |
| 1922 | 9 |
| 1923 | 19 |
| 1924 | 9 |
| 1925 | 25 |
| 1926 | 6 |
| 1927 | 16 |
| 1928 | 21 |
| 1929 | 15 |
| 1930 | 34 |
| 1931 | 27 |
| 1932 | 14 |
| 1933 | 18 |
| 1934 | 28 |
| 1935 | 9 |
| 1936 | 39 |
| 1937 | 8 |
| 1938 | 11 |
| 1939 | 22 |
| 1940 | 13 |
| 1941 | 12 |
| 1942 | 14 |
| 1943 | 15 |
| 1944 | 13 |
| 1945 | 16 |
| 1946 | 19 |
| 1947 | 16 |
| 1948 | 17 |
| 1949 | 11 |
| 1950 | 17 |
| 1951 | 19 |
All-Time Record Progression
3 new records| Date | Kind | Detail |
|---|---|---|
| 1931-06-29 | Record high minimum temperature | Record high minimum temperature 27.8 C (82.0 F) |
| 1936-07-11 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
Wettest Day of Each Month
Sep: 125.7 mm (4.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 65.5 mm (2.6 in) | 1 January 1876 |
| Feb | 35.3 mm (1.4 in) | 27 February 1948 |
| Mar | 63.0 mm (2.5 in) | 30 March 1933 |
| Apr | 66.0 mm (2.6 in) | 28 April 1896 |
| May | 93.2 mm (3.7 in) | 8 May 1927 |
| Jun | 93.0 mm (3.7 in) | 14 June 1938 |
| Jul | 115.6 mm (4.6 in) | 5 July 1876 |
| Aug | 108.2 mm (4.3 in) | 16 August 1918 |
| Sep | 125.7 mm (4.9 in) | 9 September 1875 |
| Oct | 85.6 mm (3.4 in) | 4 October 1919 |
| Nov | 53.6 mm (2.1 in) | 3 November 1935 |
| Dec | 36.8 mm (1.4 in) | 30 December 1906 |
Period of Record Coverage
1874 to 1952| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1874 | 233 | 64% | No |
| 1875 | 364 | 100% | Yes |
| 1876 | 366 | 100% | Yes |
| 1877 | 365 | 100% | Yes |
| 1878 | 365 | 100% | Yes |
| 1879 | 365 | 100% | Yes |
| 1880 | 366 | 100% | Yes |
| 1881 | 365 | 100% | Yes |
| 1882 | 365 | 100% | Yes |
| 1883 | 365 | 100% | Yes |
| 1884 | 364 | 99% | Yes |
| 1885 | 365 | 100% | Yes |
| 1886 | 365 | 100% | Yes |
| 1887 | 365 | 100% | Yes |
| 1888 | 359 | 98% | Yes |
| 1889 | 349 | 96% | Yes |
| 1890 | 346 | 95% | Yes |
| 1891 | 344 | 94% | Yes |
| 1892 | 355 | 97% | Yes |
| 1893 | 343 | 94% | Yes |
| 1894 | 357 | 98% | Yes |
| 1895 | 360 | 99% | Yes |
| 1896 | 364 | 99% | Yes |
| 1897 | 364 | 100% | Yes |
| 1898 | 364 | 100% | Yes |
| 1899 | 365 | 100% | Yes |
| 1900 | 365 | 100% | Yes |
| 1901 | 365 | 100% | Yes |
| 1902 | 365 | 100% | Yes |
| 1903 | 364 | 100% | Yes |
| 1904 | 366 | 100% | Yes |
| 1905 | 365 | 100% | Yes |
| 1906 | 365 | 100% | Yes |
| 1907 | 365 | 100% | Yes |
| 1908 | 366 | 100% | Yes |
| 1909 | 365 | 100% | Yes |
| 1910 | 365 | 100% | Yes |
| 1911 | 365 | 100% | Yes |
| 1912 | 365 | 100% | Yes |
| 1913 | 365 | 100% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 364 | 100% | Yes |
| 1922 | 364 | 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 | 365 | 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 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 365 | 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 | 31 | 8% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 25 December 1951 | Dubuque River, US | daily snowfall | 14.5 cm (5.7 in) | 1.8 cm (0.7 in) | 64 years | 30 of 100 (Routine) |
| 17 December 1951 | Dubuque River, US | daily low max (Tie) | -14.4 C (6.1 F) | tie | 32 years | 4 of 100 (Routine) |
| 16 December 1951 | Dubuque River, US | daily low max | -17.2 C (1.0 F) | 0.5 C (0.9 F) | 74 years | 29 of 100 (Routine) |
| 16 December 1951 | Dubuque River, US | daily low min (Tie) | -23.9 C (-11.0 F) | tie | 18 years | 3 of 100 (Routine) |
| 4 December 1951 | Dubuque River, US | daily high max | 18.9 C (66.0 F) | 2.2 C (4.0 F) | 4 years | 11 of 100 (Routine) |
| 3 December 1951 | Dubuque River, US | daily high max | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 34 years | 17 of 100 (Routine) |
| 7 November 1951 | Dubuque River, US | daily low max | 0.0 C (32.0 F) | 1.1 C (2.0 F) | 17 years | 13 of 100 (Routine) |
| 7 November 1951 | Dubuque River, US | daily low min (Tie) | -6.7 C (19.9 F) | tie | 58 years | 6 of 100 (Routine) |
| 6 November 1951 | Dubuque River, US | daily low min | -12.2 C (10.0 F) | 0.5 C (0.9 F) | 73 years | 29 of 100 (Routine) |
| 6 November 1951 | Dubuque River, US | daily low max | -2.2 C (28.0 F) | 3.3 C (5.9 F) | 20 years | 18 of 100 (Routine) |
| 5 November 1951 | Dubuque River, US | daily low max | -3.9 C (25.0 F) | 3.9 C (7.0 F) | 73 years | 34 of 100 (Routine) |
| 5 November 1951 | Dubuque River, US | daily low min | -13.9 C (7.0 F) | 3.9 C (7.0 F) | 49 years | 27 of 100 (Routine) |
| 4 November 1951 | Dubuque River, US | daily low min | -13.9 C (7.0 F) | 2.8 C (5.0 F) | 49 years | 25 of 100 (Routine) |
| 4 November 1951 | Dubuque River, US | daily snowfall (Tie) | 1.3 cm (0.5 in) | tie | 40 years | 4 of 100 (Routine) |
| 3 November 1951 | Dubuque River, US | daily low max | -3.9 C (25.0 F) | 3.9 C (7.0 F) | 71 years | 33 of 100 (Routine) |
| 3 November 1951 | Dubuque River, US | daily low min | -12.2 C (10.0 F) | 3.3 C (5.9 F) | 71 years | 33 of 100 (Routine) |
| 2 November 1951 | Dubuque River, US | daily low min | -11.7 C (10.9 F) | 4.5 C (8.1 F) | 71 years | 35 of 100 (Notable) |
| 31 August 1951 | Dubuque River, US | daily high min (Tie) | 23.3 C (73.9 F) | tie | 8 years | 2 of 100 (Routine) |
| 30 August 1951 | Dubuque River, US | daily high min (Tie) | 24.4 C (75.9 F) | tie | 18 years | 3 of 100 (Routine) |
| 6 August 1951 | Dubuque River, US | daily low max | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 48 years | 23 of 100 (Routine) |
Climate Trend
77 complete years, 1875 to 1951| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1875 | 6.5 C | -2.58 C |
| 1876 | 8.7 C | -0.43 C |
| 1877 | 10.0 C | +0.85 C |
| 1878 | 10.7 C | +1.60 C |
| 1879 | 9.3 C | +0.24 C |
| 1880 | 9.7 C | +0.60 C |
| 1881 | 9.6 C | +0.45 C |
| 1882 | 9.1 C | -0.03 C |
| 1883 | 7.5 C | -1.57 C |
| 1884 | 8.6 C | -0.50 C |
| 1885 | 7.3 C | -1.76 C |
| 1886 | 8.5 C | -0.58 C |
| 1887 | 8.6 C | -0.49 C |
| 1888 | 7.5 C | -1.57 C |
| 1889 | 9.3 C | +0.23 C |
| 1890 | 9.3 C | +0.15 C |
| 1891 | 9.1 C | +0.02 C |
| 1892 | 8.1 C | -1.02 C |
| 1893 | 7.7 C | -1.40 C |
| 1894 | 10.3 C | +1.20 C |
| 1895 | 9.2 C | +0.09 C |
| 1896 | 9.8 C | +0.71 C |
| 1897 | 8.9 C | -0.20 C |
| 1898 | 9.0 C | -0.15 C |
| 1899 | 8.9 C | -0.17 C |
| 1900 | 9.7 C | +0.56 C |
| 1901 | 9.3 C | +0.15 C |
| 1902 | 9.0 C | -0.15 C |
| 1903 | 8.6 C | -0.54 C |
| 1904 | 7.9 C | -1.18 C |
| 1905 | 8.6 C | -0.47 C |
| 1906 | 9.3 C | +0.19 C |
| 1907 | 8.5 C | -0.65 C |
| 1908 | 9.5 C | +0.42 C |
| 1909 | 8.6 C | -0.50 C |
| 1910 | 9.3 C | +0.15 C |
| 1911 | 9.7 C | +0.61 C |
| 1912 | 7.9 C | -1.19 C |
| 1913 | 9.9 C | +0.82 C |
| 1914 | 9.5 C | +0.38 C |
| 1915 | 8.9 C | -0.17 C |
| 1916 | 8.8 C | -0.33 C |
| 1917 | 6.9 C | -2.16 C |
| 1918 | 9.2 C | +0.11 C |
| 1919 | 9.2 C | +0.08 C |
| 1920 | 8.8 C | -0.34 C |
| 1921 | 11.0 C | +1.94 C |
| 1922 | 9.9 C | +0.77 C |
| 1923 | 9.2 C | +0.12 C |
| 1924 | 7.7 C | -1.36 C |
| 1925 | 9.0 C | -0.13 C |
| 1926 | 8.4 C | -0.70 C |
| 1927 | 9.3 C | +0.15 C |
| 1928 | 9.4 C | +0.34 C |
| 1929 | 7.8 C | -1.32 C |
| 1930 | 9.7 C | +0.58 C |
| 1931 | 11.8 C | +2.72 C |
| 1932 | 9.2 C | +0.11 C |
| 1933 | 10.1 C | +1.00 C |
| 1934 | 10.5 C | +1.37 C |
| 1935 | 9.1 C | -0.03 C |
| 1936 | 8.9 C | -0.20 C |
| 1937 | 8.7 C | -0.42 C |
| 1938 | 10.6 C | +1.49 C |
| 1939 | 10.7 C | +1.57 C |
| 1940 | 9.0 C | -0.15 C |
| 1941 | 10.8 C | +1.67 C |
| 1942 | 9.5 C | +0.42 C |
| 1943 | 8.8 C | -0.33 C |
| 1944 | 9.7 C | +0.64 C |
| 1945 | 8.7 C | -0.36 C |
| 1946 | 10.6 C | +1.45 C |
| 1947 | 9.4 C | +0.33 C |
| 1948 | 9.6 C | +0.51 C |
| 1949 | 10.0 C | +0.92 C |
| 1950 | 8.1 C | -0.99 C |
| 1951 | 7.6 C | -1.47 C |
The annual mean temperature here has risen by 0.11 C (0.01 to 0.20) per decade over 1875 to 1951. In Fahrenheit: 0.19 F (0.02 to 0.36) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.11 C (0.01 to 0.20) per decade | 0.19 F (0.02 to 0.36) per decade | 1875 to 1951 | 77 | Rise |
| Mean daily maximum | 0.07 C (-0.03 to 0.17) per decade | 0.1 F (-0.1 to 0.3) per decade | 1875 to 1951 | 77 | Not clearly different from zero |
| Mean daily minimum | 0.14 C (0.04 to 0.24) per decade | 0.3 F (0.1 to 0.4) per decade | 1875 to 1951 | 77 | 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
1873 to 1952| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1936 | 36.1 C (97.0 F) | 79 |
| Coldest night (TNn) | -35.0 C (-31.0 F) | 1875 | -27.2 C (-17.0 F) | 79 |
| Wettest day (Rx1day) | 125.7 mm (4.9 in) | 1875 | 58.8 mm (2.3 in) | 80 |
| Wettest five days (Rx5day) | 183.5 mm (7.2 in) | 1881 | 87.6 mm (3.4 in) | 80 |
| Longest dry spell (CDD) | 43 days | 1894 | 22 days | 80 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1873 | n/a |
| 1874 | 38.3 C (100.9 F) |
| 1875 | 33.3 C (91.9 F) |
| 1876 | 35.0 C (95.0 F) |
| 1877 | 35.0 C (95.0 F) |
| 1878 | 36.1 C (97.0 F) |
| 1879 | 35.0 C (95.0 F) |
| 1880 | 36.1 C (97.0 F) |
| 1881 | 36.1 C (97.0 F) |
| 1882 | 32.8 C (91.0 F) |
| 1883 | 35.6 C (96.1 F) |
| 1884 | 33.9 C (93.0 F) |
| 1885 | 36.1 C (97.0 F) |
| 1886 | 37.8 C (100.0 F) |
| 1887 | 38.3 C (100.9 F) |
| 1888 | 35.6 C (96.1 F) |
| 1889 | 35.0 C (95.0 F) |
| 1890 | 37.2 C (99.0 F) |
| 1891 | 35.6 C (96.1 F) |
| 1892 | 35.0 C (95.0 F) |
| 1893 | 35.6 C (96.1 F) |
| 1894 | 38.9 C (102.0 F) |
| 1895 | 36.7 C (98.1 F) |
| 1896 | 37.2 C (99.0 F) |
| 1897 | 37.2 C (99.0 F) |
| 1898 | 35.0 C (95.0 F) |
| 1899 | 35.6 C (96.1 F) |
| 1900 | 35.0 C (95.0 F) |
| 1901 | 41.1 C (106.0 F) |
| 1902 | 32.2 C (90.0 F) |
| 1903 | 32.8 C (91.0 F) |
| 1904 | 34.4 C (93.9 F) |
| 1905 | 34.4 C (93.9 F) |
| 1906 | 33.3 C (91.9 F) |
| 1907 | 33.9 C (93.0 F) |
| 1908 | 35.6 C (96.1 F) |
| 1909 | 35.6 C (96.1 F) |
| 1910 | 36.7 C (98.1 F) |
| 1911 | 40.0 C (104.0 F) |
| 1912 | 34.4 C (93.9 F) |
| 1913 | 37.8 C (100.0 F) |
| 1914 | 36.1 C (97.0 F) |
| 1915 | 30.6 C (87.1 F) |
| 1916 | 37.8 C (100.0 F) |
| 1917 | 37.2 C (99.0 F) |
| 1918 | 36.7 C (98.1 F) |
| 1919 | 35.0 C (95.0 F) |
| 1920 | 35.0 C (95.0 F) |
| 1921 | 36.7 C (98.1 F) |
| 1922 | 37.2 C (99.0 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 33.3 C (91.9 F) |
| 1925 | 36.1 C (97.0 F) |
| 1926 | 36.1 C (97.0 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 33.3 C (91.9 F) |
| 1929 | 34.4 C (93.9 F) |
| 1930 | 39.4 C (102.9 F) |
| 1931 | 39.4 C (102.9 F) |
| 1932 | 36.1 C (97.0 F) |
| 1933 | 36.7 C (98.1 F) |
| 1934 | 40.0 C (104.0 F) |
| 1935 | 36.7 C (98.1 F) |
| 1936 | 43.3 C (109.9 F) |
| 1937 | 37.8 C (100.0 F) |
| 1938 | 33.9 C (93.0 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 38.9 C (102.0 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 34.4 C (93.9 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 36.1 C (97.0 F) |
| 1947 | 37.2 C (99.0 F) |
| 1948 | 36.1 C (97.0 F) |
| 1949 | 36.1 C (97.0 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 34.4 C (93.9 F) |
| 1952 | 10.0 C (50.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1873 | n/a |
| 1874 | -25.6 C (-14.1 F) |
| 1875 | -35.0 C (-31.0 F) |
| 1876 | -27.8 C (-18.0 F) |
| 1877 | -28.3 C (-18.9 F) |
| 1878 | -23.3 C (-9.9 F) |
| 1879 | -30.0 C (-22.0 F) |
| 1880 | -28.3 C (-18.9 F) |
| 1881 | -31.1 C (-24.0 F) |
| 1882 | -26.7 C (-16.1 F) |
| 1883 | -32.2 C (-26.0 F) |
| 1884 | -31.1 C (-24.0 F) |
| 1885 | -30.0 C (-22.0 F) |
| 1886 | -30.6 C (-23.1 F) |
| 1887 | -35.0 C (-31.0 F) |
| 1888 | -34.4 C (-29.9 F) |
| 1889 | -26.7 C (-16.1 F) |
| 1890 | -26.7 C (-16.1 F) |
| 1891 | -25.0 C (-13.0 F) |
| 1892 | -27.8 C (-18.0 F) |
| 1893 | -30.6 C (-23.1 F) |
| 1894 | -30.0 C (-22.0 F) |
| 1895 | -29.4 C (-20.9 F) |
| 1896 | -23.3 C (-9.9 F) |
| 1897 | -30.6 C (-23.1 F) |
| 1898 | -23.3 C (-9.9 F) |
| 1899 | -32.2 C (-26.0 F) |
| 1900 | -25.0 C (-13.0 F) |
| 1901 | -27.2 C (-17.0 F) |
| 1902 | -27.8 C (-18.0 F) |
| 1903 | -27.2 C (-17.0 F) |
| 1904 | -30.6 C (-23.1 F) |
| 1905 | -31.7 C (-25.1 F) |
| 1906 | -25.6 C (-14.1 F) |
| 1907 | -25.6 C (-14.1 F) |
| 1908 | -22.2 C (-8.0 F) |
| 1909 | -28.3 C (-18.9 F) |
| 1910 | -31.7 C (-25.1 F) |
| 1911 | -23.9 C (-11.0 F) |
| 1912 | -32.2 C (-26.0 F) |
| 1913 | -23.3 C (-9.9 F) |
| 1914 | -28.9 C (-20.0 F) |
| 1915 | -30.0 C (-22.0 F) |
| 1916 | -30.0 C (-22.0 F) |
| 1917 | -28.9 C (-20.0 F) |
| 1918 | -29.4 C (-20.9 F) |
| 1919 | -30.6 C (-23.1 F) |
| 1920 | -25.6 C (-14.1 F) |
| 1921 | -21.7 C (-7.1 F) |
| 1922 | -25.6 C (-14.1 F) |
| 1923 | -26.7 C (-16.1 F) |
| 1924 | -31.1 C (-24.0 F) |
| 1925 | -26.1 C (-15.0 F) |
| 1926 | -25.0 C (-13.0 F) |
| 1927 | -25.6 C (-14.1 F) |
| 1928 | -23.3 C (-9.9 F) |
| 1929 | -31.1 C (-24.0 F) |
| 1930 | -31.1 C (-24.0 F) |
| 1931 | -18.9 C (-2.0 F) |
| 1932 | -23.9 C (-11.0 F) |
| 1933 | -30.6 C (-23.1 F) |
| 1934 | -22.2 C (-8.0 F) |
| 1935 | -26.7 C (-16.1 F) |
| 1936 | -32.2 C (-26.0 F) |
| 1937 | -21.1 C (-6.0 F) |
| 1938 | -21.7 C (-7.1 F) |
| 1939 | -20.6 C (-5.1 F) |
| 1940 | -27.8 C (-18.0 F) |
| 1941 | -23.3 C (-9.9 F) |
| 1942 | -27.2 C (-17.0 F) |
| 1943 | -26.7 C (-16.1 F) |
| 1944 | -24.4 C (-11.9 F) |
| 1945 | -24.4 C (-11.9 F) |
| 1946 | -23.9 C (-11.0 F) |
| 1947 | -27.2 C (-17.0 F) |
| 1948 | -23.3 C (-9.9 F) |
| 1949 | -26.7 C (-16.1 F) |
| 1950 | -29.4 C (-20.9 F) |
| 1951 | -32.2 C (-26.0 F) |
| 1952 | -25.6 C (-14.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1873 | 99.6 mm (3.9 in) |
| 1874 | 84.1 mm (3.3 in) |
| 1875 | 125.7 mm (4.9 in) |
| 1876 | 115.6 mm (4.6 in) |
| 1877 | 71.1 mm (2.8 in) |
| 1878 | 58.4 mm (2.3 in) |
| 1879 | 72.4 mm (2.9 in) |
| 1880 | 85.9 mm (3.4 in) |
| 1881 | 101.9 mm (4.0 in) |
| 1882 | 56.4 mm (2.2 in) |
| 1883 | 58.7 mm (2.3 in) |
| 1884 | 54.6 mm (2.1 in) |
| 1885 | 70.6 mm (2.8 in) |
| 1886 | 52.1 mm (2.1 in) |
| 1887 | 43.7 mm (1.7 in) |
| 1888 | 52.6 mm (2.1 in) |
| 1889 | 54.6 mm (2.1 in) |
| 1890 | 66.0 mm (2.6 in) |
| 1891 | 51.3 mm (2.0 in) |
| 1892 | 88.4 mm (3.5 in) |
| 1893 | 72.1 mm (2.8 in) |
| 1894 | 35.6 mm (1.4 in) |
| 1895 | 46.7 mm (1.8 in) |
| 1896 | 78.7 mm (3.1 in) |
| 1897 | 51.3 mm (2.0 in) |
| 1898 | 52.6 mm (2.1 in) |
| 1899 | 58.2 mm (2.3 in) |
| 1900 | 44.2 mm (1.7 in) |
| 1901 | 47.2 mm (1.9 in) |
| 1902 | 52.3 mm (2.1 in) |
| 1903 | 53.3 mm (2.1 in) |
| 1904 | 30.5 mm (1.2 in) |
| 1905 | 56.9 mm (2.2 in) |
| 1906 | 36.8 mm (1.4 in) |
| 1907 | 64.8 mm (2.6 in) |
| 1908 | 32.8 mm (1.3 in) |
| 1909 | 76.7 mm (3.0 in) |
| 1910 | 46.0 mm (1.8 in) |
| 1911 | 85.3 mm (3.4 in) |
| 1912 | 90.2 mm (3.6 in) |
| 1913 | 52.1 mm (2.1 in) |
| 1914 | 85.3 mm (3.4 in) |
| 1915 | 90.7 mm (3.6 in) |
| 1916 | 51.3 mm (2.0 in) |
| 1917 | 42.7 mm (1.7 in) |
| 1918 | 108.2 mm (4.3 in) |
| 1919 | 98.3 mm (3.9 in) |
| 1920 | 46.2 mm (1.8 in) |
| 1921 | 41.4 mm (1.6 in) |
| 1922 | 37.3 mm (1.5 in) |
| 1923 | 40.6 mm (1.6 in) |
| 1924 | 61.7 mm (2.4 in) |
| 1925 | 87.9 mm (3.5 in) |
| 1926 | 50.3 mm (2.0 in) |
| 1927 | 94.5 mm (3.7 in) |
| 1928 | 71.1 mm (2.8 in) |
| 1929 | 40.6 mm (1.6 in) |
| 1930 | 52.8 mm (2.1 in) |
| 1931 | 42.2 mm (1.7 in) |
| 1932 | 48.5 mm (1.9 in) |
| 1933 | 63.0 mm (2.5 in) |
| 1934 | 78.5 mm (3.1 in) |
| 1935 | 76.2 mm (3.0 in) |
| 1936 | 36.1 mm (1.4 in) |
| 1937 | 58.9 mm (2.3 in) |
| 1938 | 93.0 mm (3.7 in) |
| 1939 | 72.9 mm (2.9 in) |
| 1940 | 60.5 mm (2.4 in) |
| 1941 | 71.6 mm (2.8 in) |
| 1942 | 60.5 mm (2.4 in) |
| 1943 | 70.9 mm (2.8 in) |
| 1944 | 80.5 mm (3.2 in) |
| 1945 | 56.6 mm (2.2 in) |
| 1946 | 67.8 mm (2.7 in) |
| 1947 | 59.4 mm (2.3 in) |
| 1948 | 54.4 mm (2.1 in) |
| 1949 | 69.6 mm (2.7 in) |
| 1950 | 50.8 mm (2.0 in) |
| 1951 | 95.8 mm (3.8 in) |
| 1952 | 7.6 mm (0.30 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1873 | 104.4 mm (4.1 in) |
| 1874 | 119.9 mm (4.7 in) |
| 1875 | 139.6 mm (5.5 in) |
| 1876 | 146.1 mm (5.8 in) |
| 1877 | 76.4 mm (3.0 in) |
| 1878 | 117.6 mm (4.6 in) |
| 1879 | 150.1 mm (5.9 in) |
| 1880 | 113.7 mm (4.5 in) |
| 1881 | 183.5 mm (7.2 in) |
| 1882 | 74.5 mm (2.9 in) |
| 1883 | 94.0 mm (3.7 in) |
| 1884 | 74.1 mm (2.9 in) |
| 1885 | 113.3 mm (4.5 in) |
| 1886 | 75.7 mm (3.0 in) |
| 1887 | 83.5 mm (3.3 in) |
| 1888 | 77.9 mm (3.1 in) |
| 1889 | 75.4 mm (3.0 in) |
| 1890 | 114.5 mm (4.5 in) |
| 1891 | 52.3 mm (2.1 in) |
| 1892 | 149.9 mm (5.9 in) |
| 1893 | 73.1 mm (2.9 in) |
| 1894 | 43.9 mm (1.7 in) |
| 1895 | 60.4 mm (2.4 in) |
| 1896 | 156.2 mm (6.1 in) |
| 1897 | 58.2 mm (2.3 in) |
| 1898 | 73.4 mm (2.9 in) |
| 1899 | 86.7 mm (3.4 in) |
| 1900 | 80.7 mm (3.2 in) |
| 1901 | 56.6 mm (2.2 in) |
| 1902 | 79.4 mm (3.1 in) |
| 1903 | 85.9 mm (3.4 in) |
| 1904 | 51.0 mm (2.0 in) |
| 1905 | 72.7 mm (2.9 in) |
| 1906 | 93.8 mm (3.7 in) |
| 1907 | 75.7 mm (3.0 in) |
| 1908 | 54.7 mm (2.2 in) |
| 1909 | 104.7 mm (4.1 in) |
| 1910 | 61.4 mm (2.4 in) |
| 1911 | 166.4 mm (6.6 in) |
| 1912 | 133.2 mm (5.2 in) |
| 1913 | 69.3 mm (2.7 in) |
| 1914 | 94.5 mm (3.7 in) |
| 1915 | 132.4 mm (5.2 in) |
| 1916 | 96.0 mm (3.8 in) |
| 1917 | 68.3 mm (2.7 in) |
| 1918 | 149.2 mm (5.9 in) |
| 1919 | 128.3 mm (5.1 in) |
| 1920 | 76.8 mm (3.0 in) |
| 1921 | 74.7 mm (2.9 in) |
| 1922 | 73.4 mm (2.9 in) |
| 1923 | 62.2 mm (2.4 in) |
| 1924 | 93.2 mm (3.7 in) |
| 1925 | 124.9 mm (4.9 in) |
| 1926 | 87.9 mm (3.5 in) |
| 1927 | 145.3 mm (5.7 in) |
| 1928 | 123.1 mm (4.8 in) |
| 1929 | 71.1 mm (2.8 in) |
| 1930 | 73.9 mm (2.9 in) |
| 1931 | 90.7 mm (3.6 in) |
| 1932 | 59.5 mm (2.3 in) |
| 1933 | 92.5 mm (3.6 in) |
| 1934 | 98.9 mm (3.9 in) |
| 1935 | 95.5 mm (3.8 in) |
| 1936 | 72.6 mm (2.9 in) |
| 1937 | 68.0 mm (2.7 in) |
| 1938 | 115.9 mm (4.6 in) |
| 1939 | 95.8 mm (3.8 in) |
| 1940 | 71.2 mm (2.8 in) |
| 1941 | 135.4 mm (5.3 in) |
| 1942 | 84.6 mm (3.3 in) |
| 1943 | 98.1 mm (3.9 in) |
| 1944 | 120.2 mm (4.7 in) |
| 1945 | 67.8 mm (2.7 in) |
| 1946 | 129.5 mm (5.1 in) |
| 1947 | 109.9 mm (4.3 in) |
| 1948 | 87.2 mm (3.4 in) |
| 1949 | 123.7 mm (4.9 in) |
| 1950 | 74.5 mm (2.9 in) |
| 1951 | 126.3 mm (5.0 in) |
| 1952 | 15.3 mm (0.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1873 | 18 days |
| 1874 | 12 days |
| 1875 | 16 days |
| 1876 | 17 days |
| 1877 | 21 days |
| 1878 | 14 days |
| 1879 | 26 days |
| 1880 | 18 days |
| 1881 | 13 days |
| 1882 | 22 days |
| 1883 | 28 days |
| 1884 | 21 days |
| 1885 | 23 days |
| 1886 | 23 days |
| 1887 | 16 days |
| 1888 | 34 days |
| 1889 | 25 days |
| 1890 | 15 days |
| 1891 | 26 days |
| 1892 | 20 days |
| 1893 | 32 days |
| 1894 | 43 days |
| 1895 | 22 days |
| 1896 | 22 days |
| 1897 | 24 days |
| 1898 | 19 days |
| 1899 | 24 days |
| 1900 | 18 days |
| 1901 | 24 days |
| 1902 | 22 days |
| 1903 | 26 days |
| 1904 | 31 days |
| 1905 | 21 days |
| 1906 | 18 days |
| 1907 | 25 days |
| 1908 | 30 days |
| 1909 | 17 days |
| 1910 | 31 days |
| 1911 | 27 days |
| 1912 | 17 days |
| 1913 | 25 days |
| 1914 | 21 days |
| 1915 | 32 days |
| 1916 | 17 days |
| 1917 | 27 days |
| 1918 | 18 days |
| 1919 | 32 days |
| 1920 | 21 days |
| 1921 | 16 days |
| 1922 | 17 days |
| 1923 | 17 days |
| 1924 | 21 days |
| 1925 | 29 days |
| 1926 | 24 days |
| 1927 | 19 days |
| 1928 | 17 days |
| 1929 | 24 days |
| 1930 | 21 days |
| 1931 | 28 days |
| 1932 | 23 days |
| 1933 | 26 days |
| 1934 | 26 days |
| 1935 | 16 days |
| 1936 | 26 days |
| 1937 | 13 days |
| 1938 | 25 days |
| 1939 | 29 days |
| 1940 | 18 days |
| 1941 | 18 days |
| 1942 | 38 days |
| 1943 | 27 days |
| 1944 | 26 days |
| 1945 | 30 days |
| 1946 | 25 days |
| 1947 | 27 days |
| 1948 | 21 days |
| 1949 | 21 days |
| 1950 | 31 days |
| 1951 | 17 days |
| 1952 | 6 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
77 years with a frostAcross 77 years with a frost, the median last spring frost at Dubuque River falls on 19 April and the median first autumn frost on 17 October, which leaves a median of 183 days between them.
In 1922 to 1951 the median growing season was 186 days. That is 7 days more than in 1875 to 1904.
Fitted over all years, the growing season changes by +1.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1875 to 1904) | Recent period (1922 to 1951) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 19 April | 21 April | 19 April | 2 days earlier | -0.6 days per decade |
| First autumn frost | 17 October | 15 October | 18 October | 3 days later | +1.4 days per decade |
| Growing days | 183 days | 179 days | 186 days | 7 days more | +1.9 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
78 years, 1874 to 1951A day with at least 60.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 128.9 mm (5.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 60.8 mm (2.4 in) | |
| 5 years | 79.4 mm (3.1 in) | |
| 10 years | 91.6 mm (3.6 in) | |
| 25 years | 106.8 mm (4.2 in) | |
| 50 years | 117.9 mm (4.6 in) | |
| 100 years | 128.9 mm (5.1 in) | Longer than the 78 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, 78 years of values from 1874 to 1951.
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: 125.7 mm (4.9 in) in 1875; 115.6 mm (4.6 in) in 1876; 108.2 mm (4.3 in) in 1918.
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 (2026-10-15).