Dubuque L&D 11 Weather Records (USC00132364)
Record envelope, standing records and threshold days for Dubuque L&D 11 (USC00132364), Iowa, United States, with 89 years of record.
Key Facts for Dubuque L&D 11
- Dubuque L&D 11 (USC00132364) is a weather station in Iowa, United States at 42.54 latitude and -90.65 longitude, 189 m (620 ft) above sea level.
- The station reports from 1938 to 2026, 89 years of record.
- 1,464 records set at Dubuque L&D 11 still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Dubuque L&D 11 set a daily record precipitation of 63.5 mm (2.5 in) on 19 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Iowa, United States, 42.54 latitude, -90.65 longitude.
- Elevation: 189 m (620 ft).
- Period of record: 1938 to 2026, 89 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
11 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) | -38.3 C (-36.9 F) | 13.3 C (55.9 F) | -27.8 C (-18.0 F) |
| Feb | 22.8 C (73.0 F) | -35.6 C (-32.1 F) | 17.2 C (63.0 F) | -17.2 C (1.0 F) |
| Mar | 30.6 C (87.1 F) | -35.6 C (-32.1 F) | 28.3 C (82.9 F) | -14.4 C (6.1 F) |
| Apr | 33.9 C (93.0 F) | -11.7 C (10.9 F) | 29.4 C (84.9 F) | -3.9 C (25.0 F) |
| May | 35.0 C (95.0 F) | -1.7 C (28.9 F) | 31.7 C (89.1 F) | 2.2 C (36.0 F) |
| Jun | 38.3 C (100.9 F) | 4.4 C (39.9 F) | 34.4 C (93.9 F) | 10.6 C (51.1 F) |
| Jul | 42.2 C (108.0 F) | 7.8 C (46.0 F) | 34.4 C (93.9 F) | 14.4 C (57.9 F) |
| Aug | 40.0 C (104.0 F) | 6.1 C (43.0 F) | 31.7 C (89.1 F) | 13.9 C (57.0 F) |
| Sep | 36.1 C (97.0 F) | -1.7 C (28.9 F) | 36.1 C (97.0 F) | 9.4 C (48.9 F) |
| Oct | 33.3 C (91.9 F) | -7.2 C (19.0 F) | 29.4 C (84.9 F) | 7.8 C (46.0 F) |
| Nov | 23.9 C (75.0 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Dec | 20.0 C (68.0 F) | -34.4 C (-29.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1941 | 25 |
| 1942 | 22 |
| 1943 | 15 |
| 1944 | 20 |
| 1945 | 18 |
| 1946 | 17 |
| 1947 | 29 |
| 1948 | 4 |
| 1949 | 13 |
| 1950 | 40 |
| 1951 | 32 |
| 1952 | 19 |
| 1953 | 16 |
| 1954 | 12 |
| 1955 | 15 |
| 1956 | 14 |
| 1957 | 11 |
| 1958 | 18 |
| 1959 | 18 |
| 1960 | 16 |
| 1961 | 8 |
| 1962 | 14 |
| 1963 | 24 |
| 1964 | 24 |
| 1965 | 18 |
| 1966 | 11 |
| 1967 | 24 |
| 1968 | 14 |
| 1969 | 8 |
| 1970 | 17 |
| 1971 | 14 |
| 1972 | 21 |
| 1973 | 9 |
| 1974 | 13 |
| 1975 | 11 |
| 1976 | 15 |
| 1977 | 13 |
| 1978 | 7 |
| 1979 | 17 |
| 1980 | 10 |
| 1981 | 17 |
| 1982 | 16 |
| 1983 | 27 |
| 1984 | 12 |
| 1985 | 18 |
| 1986 | 17 |
| 1987 | 16 |
| 1988 | 40 |
| 1989 | 23 |
| 1990 | 24 |
| 1991 | 31 |
| 1992 | 10 |
| 1993 | 6 |
| 1994 | 23 |
| 1995 | 16 |
| 1996 | 14 |
| 1997 | 12 |
| 1998 | 26 |
| 1999 | 17 |
| 2000 | 23 |
| 2001 | 15 |
| 2002 | 15 |
| 2003 | 9 |
| 2004 | 11 |
| 2005 | 18 |
| 2006 | 19 |
| 2007 | 23 |
| 2008 | 11 |
| 2009 | 20 |
| 2010 | 7 |
| 2011 | 20 |
| 2012 | 38 |
| 2013 | 11 |
| 2014 | 24 |
| 2015 | 15 |
| 2016 | 6 |
| 2017 | 21 |
| 2018 | 16 |
| 2019 | 20 |
| 2020 | 16 |
| 2021 | 20 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 14 |
| 2025 | 7 |
| 2026 | 12 |
All-Time Record Progression
15 new records| Date | Kind | Detail |
|---|---|---|
| 1972-08-02 | Record daily precipitation | Record daily precipitation 133.9 mm (5.3 in) |
| 1979-01-14 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 1979-01-16 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1979-01-19 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1979-01-20 | Record snow depth | Record snow depth 68.6 cm (27.0 in) |
| 1979-01-24 | Record snow depth | Record snow depth 81.3 cm (32.0 in) |
| 1987-07-12 | Record high minimum temperature | Record high minimum temperature 27.2 C (81.0 F) |
| 1988-08-16 | Record high maximum temperature | Record high maximum temperature 39.4 C (102.9 F) |
| 1988-08-17 | Record high maximum temperature | Record high maximum temperature 40.0 C (104.0 F) |
| 1995-07-14 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1996-02-04 | Record low maximum temperature | Record low maximum temperature -26.7 C (-16.1 F) |
| 2009-01-16 | Record low minimum temperature | Record low minimum temperature -37.8 C (-36.0 F) |
| 2009-01-17 | Record low minimum temperature | Record low minimum temperature -38.3 C (-36.9 F) |
| 2010-07-23 | Record daily precipitation | Record daily precipitation 182.4 mm (7.2 in) |
| 2011-07-28 | Record daily precipitation | Record daily precipitation 223.5 mm (8.8 in) |
Wettest Day of Each Month
Jul: 223.5 mm (8.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 41.4 mm (1.6 in) | 13 January 1960 |
| Feb | 45.2 mm (1.8 in) | 9 February 2001 |
| Mar | 56.4 mm (2.2 in) | 31 March 1998 |
| Apr | 71.9 mm (2.8 in) | 18 April 2013 |
| May | 114.3 mm (4.5 in) | 13 May 1978 |
| Jun | 123.4 mm (4.9 in) | 4 June 2002 |
| Jul | 223.5 mm (8.8 in) | 28 July 2011 |
| Aug | 133.9 mm (5.3 in) | 2 August 1972 |
| Sep | 113.8 mm (4.5 in) | 13 September 1972 |
| Oct | 76.2 mm (3.0 in) | 2 October 2019 |
| Nov | 90.7 mm (3.6 in) | 4 November 2003 |
| Dec | 53.6 mm (2.1 in) | 8 December 1966 |
Period of Record Coverage
1938 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1938 | 31 | 8% | No |
| 1941 | 362 | 99% | Yes |
| 1942 | 364 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 363 | 99% | Yes |
| 1947 | 364 | 100% | Yes |
| 1948 | 350 | 96% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 363 | 99% | Yes |
| 1953 | 360 | 99% | Yes |
| 1954 | 364 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 356 | 98% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 361 | 99% | Yes |
| 1975 | 362 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 334 | 92% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 350 | 96% | Yes |
| 1980 | 361 | 99% | Yes |
| 1981 | 362 | 99% | Yes |
| 1982 | 359 | 98% | Yes |
| 1983 | 329 | 90% | Yes |
| 1984 | 361 | 99% | Yes |
| 1985 | 363 | 99% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 357 | 98% | Yes |
| 1988 | 361 | 99% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 363 | 99% | Yes |
| 1991 | 359 | 98% | Yes |
| 1992 | 350 | 96% | Yes |
| 1993 | 342 | 94% | Yes |
| 1994 | 359 | 98% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 364 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 362 | 99% | Yes |
| 2000 | 364 | 99% | Yes |
| 2001 | 359 | 98% | Yes |
| 2002 | 362 | 99% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 363 | 99% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 363 | 99% | Yes |
| 2008 | 333 | 91% | Yes |
| 2009 | 332 | 91% | Yes |
| 2010 | 359 | 98% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 356 | 97% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 362 | 99% | Yes |
| 2015 | 357 | 98% | Yes |
| 2016 | 361 | 99% | Yes |
| 2017 | 358 | 98% | Yes |
| 2018 | 357 | 98% | Yes |
| 2019 | 355 | 97% | Yes |
| 2020 | 356 | 97% | Yes |
| 2021 | 357 | 98% | Yes |
| 2022 | 354 | 97% | Yes |
| 2023 | 356 | 98% | Yes |
| 2024 | 351 | 96% | Yes |
| 2025 | 356 | 98% | Yes |
| 2026 | 269 | 74% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 19 September 2026 | Dubuque L&D 11, US | daily rain (Provisional) | 63.5 mm (2.5 in) | 26.9 mm (1.1 in) | 24 years | 34 of 100 (Routine) |
| 5 September 2026 | Dubuque L&D 11, US | daily high min (Provisional) | 23.3 C (73.9 F) | 0.5 C (0.9 F) | 36 years | 19 of 100 (Routine) |
| 5 September 2026 | Dubuque L&D 11, US | daily high max (Tie, Provisional) | 34.4 C (93.9 F) | tie | 3 years | 2 of 100 (Routine) |
| 3 September 2026 | Dubuque L&D 11, US | daily high min (Provisional) | 24.4 C (75.9 F) | 2.2 C (4.0 F) | 65 years | 31 of 100 (Routine) |
| 3 September 2026 | Dubuque L&D 11, US | daily high max (Provisional) | 35.6 C (96.1 F) | 0.6 C (1.1 F) | 25 years | 16 of 100 (Routine) |
| 2 September 2026 | Dubuque L&D 11, US | daily high min (Provisional) | 23.3 C (73.9 F) | 1.1 C (2.0 F) | 72 years | 31 of 100 (Routine) |
| 2 September 2026 | Dubuque L&D 11, US | monthly high max (Tie, Provisional) | 36.1 C (97.0 F) | tie | 70 years | 9 of 100 (Routine) |
| 6 August 2026 | Dubuque L&D 11, US | daily low max | 20.6 C (69.1 F) | 1.6 C (2.9 F) | 75 years | 34 of 100 (Routine) |
| 1 August 2026 | Dubuque L&D 11, US | daily rain | 83.8 mm (3.3 in) | 35.5 mm (1.4 in) | 68 years | 52 of 100 (Notable) |
| 2 July 2026 | Dubuque L&D 11, US | daily high min | 25.6 C (78.1 F) | 0.6 C (1.1 F) | 15 years | 14 of 100 (Routine) |
| 12 June 2026 | Dubuque L&D 11, US | daily rain | 69.9 mm (2.8 in) | 5.4 mm (0.21 in) | 56 years | 28 of 100 (Routine) |
| 11 June 2026 | Dubuque L&D 11, US | daily rain | 31.0 mm (1.2 in) | 4.8 mm (0.19 in) | 21 years | 17 of 100 (Routine) |
| 6 June 2026 | Dubuque L&D 11, US | daily rain | 50.8 mm (2.0 in) | 27.7 mm (1.1 in) | 4 years | 28 of 100 (Routine) |
| 27 May 2026 | Dubuque L&D 11, US | daily high max (Tie) | 31.7 C (89.1 F) | tie | 8 years | 2 of 100 (Routine) |
| 7 May 2026 | Dubuque L&D 11, US | daily low max (Tie) | 10.0 C (50.0 F) | tie | 65 years | 6 of 100 (Routine) |
| 15 April 2026 | Dubuque L&D 11, US | daily rain | 38.1 mm (1.5 in) | 25.7 mm (1.0 in) | 72 years | 56 of 100 (Notable) |
| 15 April 2026 | Dubuque L&D 11, US | daily high min | 15.0 C (59.0 F) | 1.7 C (3.1 F) | 49 years | 25 of 100 (Routine) |
| 14 April 2026 | Dubuque L&D 11, US | daily high min | 15.6 C (60.1 F) | 1.2 C (2.2 F) | 84 years | 35 of 100 (Notable) |
| 13 April 2026 | Dubuque L&D 11, US | daily high min (Tie) | 14.4 C (57.9 F) | tie | 84 years | 8 of 100 (Routine) |
| 31 March 2026 | Dubuque L&D 11, US | daily high max | 28.3 C (82.9 F) | 0.5 C (0.9 F) | 48 years | 22 of 100 (Routine) |
Climate Trend
81 complete years, 1941 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1941 | 10.9 C | +1.40 C |
| 1942 | 9.7 C | +0.17 C |
| 1943 | 8.9 C | -0.62 C |
| 1944 | 10.1 C | +0.59 C |
| 1945 | 8.9 C | -0.58 C |
| 1946 | 10.6 C | +1.14 C |
| 1947 | 9.2 C | -0.32 C |
| 1948 | 9.0 C | -0.51 C |
| 1949 | 9.1 C | -0.37 C |
| 1950 | 7.1 C | -2.43 C |
| 1951 | 6.9 C | -2.64 C |
| 1952 | 9.7 C | +0.17 C |
| 1953 | 10.2 C | +0.73 C |
| 1954 | 10.1 C | +0.56 C |
| 1955 | 9.8 C | +0.35 C |
| 1956 | 9.5 C | +0.00 C |
| 1957 | 9.4 C | -0.06 C |
| 1958 | 8.9 C | -0.58 C |
| 1959 | 9.0 C | -0.52 C |
| 1960 | 8.9 C | -0.63 C |
| 1961 | 9.1 C | -0.35 C |
| 1962 | 8.5 C | -1.03 C |
| 1963 | 9.3 C | -0.23 C |
| 1964 | 10.3 C | +0.82 C |
| 1965 | 9.2 C | -0.34 C |
| 1966 | 8.7 C | -0.75 C |
| 1967 | 8.7 C | -0.81 C |
| 1968 | 9.9 C | +0.45 C |
| 1969 | 9.3 C | -0.22 C |
| 1970 | 9.6 C | +0.10 C |
| 1971 | 9.8 C | +0.29 C |
| 1972 | 8.6 C | -0.91 C |
| 1973 | 10.7 C | +1.19 C |
| 1974 | 9.6 C | +0.07 C |
| 1975 | 9.8 C | +0.31 C |
| 1976 | 9.2 C | -0.26 C |
| 1978 | 8.2 C | -1.27 C |
| 1979 | 7.8 C | -1.72 C |
| 1980 | 9.3 C | -0.20 C |
| 1981 | 9.9 C | +0.41 C |
| 1982 | 9.0 C | -0.51 C |
| 1984 | 10.1 C | +0.57 C |
| 1985 | 9.1 C | -0.40 C |
| 1986 | 10.1 C | +0.60 C |
| 1987 | 11.7 C | +2.18 C |
| 1988 | 10.6 C | +1.09 C |
| 1989 | 9.4 C | -0.14 C |
| 1990 | 11.0 C | +1.46 C |
| 1991 | 10.5 C | +1.05 C |
| 1992 | 9.9 C | +0.39 C |
| 1993 | 9.3 C | -0.24 C |
| 1994 | 9.0 C | -0.53 C |
| 1995 | 9.0 C | -0.48 C |
| 1996 | 7.9 C | -1.56 C |
| 1997 | 8.8 C | -0.70 C |
| 1998 | 11.2 C | +1.70 C |
| 1999 | 10.2 C | +0.75 C |
| 2000 | 9.3 C | -0.16 C |
| 2001 | 10.2 C | +0.71 C |
| 2002 | 10.1 C | +0.57 C |
| 2003 | 9.0 C | -0.45 C |
| 2004 | 9.6 C | +0.08 C |
| 2005 | 10.2 C | +0.69 C |
| 2006 | 10.6 C | +1.08 C |
| 2007 | 9.9 C | +0.41 C |
| 2010 | 9.8 C | +0.29 C |
| 2011 | 9.7 C | +0.25 C |
| 2012 | 11.5 C | +2.00 C |
| 2013 | 8.3 C | -1.23 C |
| 2014 | 7.1 C | -2.39 C |
| 2015 | 9.5 C | -0.04 C |
| 2016 | 10.2 C | +0.70 C |
| 2017 | 9.7 C | +0.21 C |
| 2018 | 8.7 C | -0.77 C |
| 2019 | 8.2 C | -1.32 C |
| 2020 | 9.6 C | +0.11 C |
| 2021 | 9.8 C | +0.35 C |
| 2022 | 8.4 C | -1.05 C |
| 2023 | 10.4 C | +0.90 C |
| 2024 | 11.3 C | +1.76 C |
| 2025 | 10.1 C | +0.59 C |
The fitted trend in annual mean temperature here over 1941 to 2025 is 0.06 C (-0.03 to 0.14) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.10 F (-0.05 to 0.25) per decade. The slope is a straight line fitted to 81 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.06 C (-0.03 to 0.14) per decade | 0.10 F (-0.05 to 0.25) per decade | 1941 to 2025 | 81 | Not clearly different from zero |
| Mean daily maximum | 0.10 C (0.01 to 0.19) per decade | 0.18 F (0.02 to 0.33) per decade | 1941 to 2025 | 81 | Rise |
| Mean daily minimum | 0.02 C (-0.07 to 0.10) per decade | 0.03 F (-0.13 to 0.18) per decade | 1941 to 2025 | 81 | 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
1938 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1995 | 35.0 C (95.0 F) | 87 |
| Coldest night (TNn) | -38.3 C (-36.9 F) | 2009 | -27.2 C (-17.0 F) | 87 |
| Wettest day (Rx1day) | 223.5 mm (8.8 in) | 2011 | 62.2 mm (2.4 in) | 87 |
| Wettest five days (Rx5day) | 271.5 mm (10.7 in) | 2011 | 96.5 mm (3.8 in) | 87 |
| Longest dry spell (CDD) | 55 days | 1952 | 22 days | 87 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1938 | 26.1 C (79.0 F) |
| 1941 | 38.3 C (100.9 F) |
| 1942 | 34.4 C (93.9 F) |
| 1943 | 33.9 C (93.0 F) |
| 1944 | 33.9 C (93.0 F) |
| 1945 | 35.6 C (96.1 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 36.7 C (98.1 F) |
| 1948 | 35.6 C (96.1 F) |
| 1949 | 34.4 C (93.9 F) |
| 1950 | 31.7 C (89.1 F) |
| 1951 | 31.1 C (88.0 F) |
| 1952 | 34.4 C (93.9 F) |
| 1953 | 35.6 C (96.1 F) |
| 1954 | 35.6 C (96.1 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 33.9 C (93.0 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 33.9 C (93.0 F) |
| 1960 | 34.4 C (93.9 F) |
| 1961 | 32.8 C (91.0 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 34.4 C (93.9 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 34.4 C (93.9 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 33.9 C (93.0 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 35.0 C (95.0 F) |
| 1971 | 34.4 C (93.9 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 34.4 C (93.9 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 33.3 C (91.9 F) |
| 1976 | 35.6 C (96.1 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 33.9 C (93.0 F) |
| 1981 | 36.7 C (98.1 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 36.1 C (97.0 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 37.8 C (100.0 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 34.4 C (93.9 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 42.2 C (108.0 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 36.1 C (97.0 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 36.1 C (97.0 F) |
| 2001 | 37.8 C (100.0 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 34.4 C (93.9 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 36.7 C (98.1 F) |
| 2007 | 36.7 C (98.1 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 32.2 C (90.0 F) |
| 2010 | 35.0 C (95.0 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 39.4 C (102.9 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 35.0 C (95.0 F) |
| 2017 | 34.4 C (93.9 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 38.9 C (102.0 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1938 | -11.7 C (10.9 F) |
| 1941 | -23.3 C (-9.9 F) |
| 1942 | -28.3 C (-18.9 F) |
| 1943 | -28.3 C (-18.9 F) |
| 1944 | -27.2 C (-17.0 F) |
| 1945 | -27.2 C (-17.0 F) |
| 1946 | -23.9 C (-11.0 F) |
| 1947 | -30.6 C (-23.1 F) |
| 1948 | -25.0 C (-13.0 F) |
| 1949 | -28.9 C (-20.0 F) |
| 1950 | -34.4 C (-29.9 F) |
| 1951 | -35.0 C (-31.0 F) |
| 1952 | -26.1 C (-15.0 F) |
| 1953 | -22.8 C (-9.0 F) |
| 1954 | -25.6 C (-14.1 F) |
| 1955 | -25.6 C (-14.1 F) |
| 1956 | -28.3 C (-18.9 F) |
| 1957 | -27.2 C (-17.0 F) |
| 1958 | -29.4 C (-20.9 F) |
| 1959 | -30.6 C (-23.1 F) |
| 1960 | -27.8 C (-18.0 F) |
| 1961 | -25.0 C (-13.0 F) |
| 1962 | -35.6 C (-32.1 F) |
| 1963 | -30.0 C (-22.0 F) |
| 1964 | -21.7 C (-7.1 F) |
| 1965 | -28.9 C (-20.0 F) |
| 1966 | -30.0 C (-22.0 F) |
| 1967 | -28.9 C (-20.0 F) |
| 1968 | -26.1 C (-15.0 F) |
| 1969 | -25.0 C (-13.0 F) |
| 1970 | -30.0 C (-22.0 F) |
| 1971 | -27.8 C (-18.0 F) |
| 1972 | -29.4 C (-20.9 F) |
| 1973 | -25.6 C (-14.1 F) |
| 1974 | -29.4 C (-20.9 F) |
| 1975 | -22.2 C (-8.0 F) |
| 1976 | -26.7 C (-16.1 F) |
| 1977 | -29.4 C (-20.9 F) |
| 1978 | -26.7 C (-16.1 F) |
| 1979 | -30.6 C (-23.1 F) |
| 1980 | -23.3 C (-9.9 F) |
| 1981 | -24.4 C (-11.9 F) |
| 1982 | -31.7 C (-25.1 F) |
| 1983 | -30.0 C (-22.0 F) |
| 1984 | -30.0 C (-22.0 F) |
| 1985 | -31.7 C (-25.1 F) |
| 1986 | -30.6 C (-23.1 F) |
| 1987 | -21.1 C (-6.0 F) |
| 1988 | -28.3 C (-18.9 F) |
| 1989 | -28.3 C (-18.9 F) |
| 1990 | -23.9 C (-11.0 F) |
| 1991 | -26.7 C (-16.1 F) |
| 1992 | -21.7 C (-7.1 F) |
| 1993 | -25.6 C (-14.1 F) |
| 1994 | -32.8 C (-27.0 F) |
| 1995 | -20.6 C (-5.1 F) |
| 1996 | -35.6 C (-32.1 F) |
| 1997 | -24.4 C (-11.9 F) |
| 1998 | -20.0 C (-4.0 F) |
| 1999 | -31.7 C (-25.1 F) |
| 2000 | -31.7 C (-25.1 F) |
| 2001 | -25.6 C (-14.1 F) |
| 2002 | -21.1 C (-6.0 F) |
| 2003 | -21.1 C (-6.0 F) |
| 2004 | -24.4 C (-11.9 F) |
| 2005 | -22.8 C (-9.0 F) |
| 2006 | -25.6 C (-14.1 F) |
| 2007 | -26.7 C (-16.1 F) |
| 2008 | -27.8 C (-18.0 F) |
| 2009 | -38.3 C (-36.9 F) |
| 2010 | -23.9 C (-11.0 F) |
| 2011 | -29.4 C (-20.9 F) |
| 2012 | -23.3 C (-9.9 F) |
| 2013 | -28.3 C (-18.9 F) |
| 2014 | -31.1 C (-24.0 F) |
| 2015 | -30.6 C (-23.1 F) |
| 2016 | -23.9 C (-11.0 F) |
| 2017 | -21.7 C (-7.1 F) |
| 2018 | -25.6 C (-14.1 F) |
| 2019 | -34.4 C (-29.9 F) |
| 2020 | -23.3 C (-9.9 F) |
| 2021 | -27.8 C (-18.0 F) |
| 2022 | -30.6 C (-23.1 F) |
| 2023 | -23.3 C (-9.9 F) |
| 2024 | -25.0 C (-13.0 F) |
| 2025 | -25.0 C (-13.0 F) |
| 2026 | -27.8 C (-18.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1938 | 16.5 mm (0.6 in) |
| 1941 | 62.2 mm (2.4 in) |
| 1942 | 49.3 mm (1.9 in) |
| 1943 | 71.1 mm (2.8 in) |
| 1944 | 68.3 mm (2.7 in) |
| 1945 | 34.0 mm (1.3 in) |
| 1946 | 83.8 mm (3.3 in) |
| 1947 | 98.6 mm (3.9 in) |
| 1948 | 36.8 mm (1.4 in) |
| 1949 | 49.0 mm (1.9 in) |
| 1950 | 50.5 mm (2.0 in) |
| 1951 | 84.3 mm (3.3 in) |
| 1952 | 63.0 mm (2.5 in) |
| 1953 | 69.6 mm (2.7 in) |
| 1954 | 43.2 mm (1.7 in) |
| 1955 | 38.1 mm (1.5 in) |
| 1956 | 76.7 mm (3.0 in) |
| 1957 | 54.6 mm (2.1 in) |
| 1958 | 44.7 mm (1.8 in) |
| 1959 | 46.2 mm (1.8 in) |
| 1960 | 43.2 mm (1.7 in) |
| 1961 | 72.4 mm (2.9 in) |
| 1962 | 92.5 mm (3.6 in) |
| 1963 | 62.0 mm (2.4 in) |
| 1964 | 52.1 mm (2.1 in) |
| 1965 | 85.1 mm (3.4 in) |
| 1966 | 53.6 mm (2.1 in) |
| 1967 | 102.6 mm (4.0 in) |
| 1968 | 59.2 mm (2.3 in) |
| 1969 | 84.6 mm (3.3 in) |
| 1970 | 86.4 mm (3.4 in) |
| 1971 | 58.4 mm (2.3 in) |
| 1972 | 133.9 mm (5.3 in) |
| 1973 | 50.8 mm (2.0 in) |
| 1974 | 64.8 mm (2.6 in) |
| 1975 | 45.0 mm (1.8 in) |
| 1976 | 49.3 mm (1.9 in) |
| 1977 | 55.9 mm (2.2 in) |
| 1978 | 114.3 mm (4.5 in) |
| 1979 | 57.2 mm (2.3 in) |
| 1980 | 60.7 mm (2.4 in) |
| 1981 | 54.4 mm (2.1 in) |
| 1982 | 55.1 mm (2.2 in) |
| 1983 | 37.6 mm (1.5 in) |
| 1984 | 54.4 mm (2.1 in) |
| 1985 | 33.8 mm (1.3 in) |
| 1986 | 82.6 mm (3.3 in) |
| 1987 | 98.0 mm (3.9 in) |
| 1988 | 41.9 mm (1.6 in) |
| 1989 | 55.4 mm (2.2 in) |
| 1990 | 53.3 mm (2.1 in) |
| 1991 | 63.5 mm (2.5 in) |
| 1992 | 58.7 mm (2.3 in) |
| 1993 | 81.3 mm (3.2 in) |
| 1994 | 60.2 mm (2.4 in) |
| 1995 | 73.4 mm (2.9 in) |
| 1996 | 67.3 mm (2.6 in) |
| 1997 | 63.5 mm (2.5 in) |
| 1998 | 59.2 mm (2.3 in) |
| 1999 | 69.1 mm (2.7 in) |
| 2000 | 57.7 mm (2.3 in) |
| 2001 | 56.6 mm (2.2 in) |
| 2002 | 123.4 mm (4.9 in) |
| 2003 | 90.7 mm (3.6 in) |
| 2004 | 78.7 mm (3.1 in) |
| 2005 | 63.0 mm (2.5 in) |
| 2006 | 43.7 mm (1.7 in) |
| 2007 | 95.3 mm (3.8 in) |
| 2008 | 58.9 mm (2.3 in) |
| 2009 | 48.3 mm (1.9 in) |
| 2010 | 182.4 mm (7.2 in) |
| 2011 | 223.5 mm (8.8 in) |
| 2012 | 34.3 mm (1.4 in) |
| 2013 | 71.9 mm (2.8 in) |
| 2014 | 86.4 mm (3.4 in) |
| 2015 | 62.5 mm (2.5 in) |
| 2016 | 99.6 mm (3.9 in) |
| 2017 | 107.4 mm (4.2 in) |
| 2018 | 77.5 mm (3.1 in) |
| 2019 | 76.2 mm (3.0 in) |
| 2020 | 58.4 mm (2.3 in) |
| 2021 | 46.2 mm (1.8 in) |
| 2022 | 91.4 mm (3.6 in) |
| 2023 | 62.2 mm (2.4 in) |
| 2024 | 76.2 mm (3.0 in) |
| 2025 | 80.0 mm (3.1 in) |
| 2026 | 83.8 mm (3.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1938 | 32.2 mm (1.3 in) |
| 1941 | 118.1 mm (4.6 in) |
| 1942 | 64.5 mm (2.5 in) |
| 1943 | 94.5 mm (3.7 in) |
| 1944 | 110.8 mm (4.4 in) |
| 1945 | 64.3 mm (2.5 in) |
| 1946 | 103.4 mm (4.1 in) |
| 1947 | 112.3 mm (4.4 in) |
| 1948 | 65.5 mm (2.6 in) |
| 1949 | 65.8 mm (2.6 in) |
| 1950 | 68.3 mm (2.7 in) |
| 1951 | 109.2 mm (4.3 in) |
| 1952 | 82.3 mm (3.2 in) |
| 1953 | 99.1 mm (3.9 in) |
| 1954 | 70.1 mm (2.8 in) |
| 1955 | 61.2 mm (2.4 in) |
| 1956 | 93.8 mm (3.7 in) |
| 1957 | 67.9 mm (2.7 in) |
| 1958 | 86.2 mm (3.4 in) |
| 1959 | 86.0 mm (3.4 in) |
| 1960 | 96.5 mm (3.8 in) |
| 1961 | 126.4 mm (5.0 in) |
| 1962 | 94.8 mm (3.7 in) |
| 1963 | 74.0 mm (2.9 in) |
| 1964 | 73.9 mm (2.9 in) |
| 1965 | 126.7 mm (5.0 in) |
| 1966 | 90.5 mm (3.6 in) |
| 1967 | 173.2 mm (6.8 in) |
| 1968 | 92.8 mm (3.7 in) |
| 1969 | 176.1 mm (6.9 in) |
| 1970 | 110.0 mm (4.3 in) |
| 1971 | 72.1 mm (2.8 in) |
| 1972 | 150.7 mm (5.9 in) |
| 1973 | 69.1 mm (2.7 in) |
| 1974 | 99.9 mm (3.9 in) |
| 1975 | 57.2 mm (2.3 in) |
| 1976 | 56.9 mm (2.2 in) |
| 1977 | 104.2 mm (4.1 in) |
| 1978 | 141.7 mm (5.6 in) |
| 1979 | 57.7 mm (2.3 in) |
| 1980 | 103.1 mm (4.1 in) |
| 1981 | 101.9 mm (4.0 in) |
| 1982 | 77.5 mm (3.1 in) |
| 1983 | 94.9 mm (3.7 in) |
| 1984 | 96.8 mm (3.8 in) |
| 1985 | 71.1 mm (2.8 in) |
| 1986 | 131.1 mm (5.2 in) |
| 1987 | 108.9 mm (4.3 in) |
| 1988 | 62.3 mm (2.5 in) |
| 1989 | 66.5 mm (2.6 in) |
| 1990 | 127.5 mm (5.0 in) |
| 1991 | 88.9 mm (3.5 in) |
| 1992 | 93.8 mm (3.7 in) |
| 1993 | 161.1 mm (6.3 in) |
| 1994 | 122.2 mm (4.8 in) |
| 1995 | 75.9 mm (3.0 in) |
| 1996 | 95.0 mm (3.7 in) |
| 1997 | 101.6 mm (4.0 in) |
| 1998 | 93.0 mm (3.7 in) |
| 1999 | 103.7 mm (4.1 in) |
| 2000 | 78.0 mm (3.1 in) |
| 2001 | 78.3 mm (3.1 in) |
| 2002 | 149.8 mm (5.9 in) |
| 2003 | 143.1 mm (5.6 in) |
| 2004 | 120.2 mm (4.7 in) |
| 2005 | 96.5 mm (3.8 in) |
| 2006 | 102.4 mm (4.0 in) |
| 2007 | 126.6 mm (5.0 in) |
| 2008 | 110.5 mm (4.4 in) |
| 2009 | 89.7 mm (3.5 in) |
| 2010 | 239.5 mm (9.4 in) |
| 2011 | 271.5 mm (10.7 in) |
| 2012 | 49.3 mm (1.9 in) |
| 2013 | 85.9 mm (3.4 in) |
| 2014 | 164.4 mm (6.5 in) |
| 2015 | 82.8 mm (3.3 in) |
| 2016 | 127.0 mm (5.0 in) |
| 2017 | 131.6 mm (5.2 in) |
| 2018 | 108.6 mm (4.3 in) |
| 2019 | 124.2 mm (4.9 in) |
| 2020 | 99.6 mm (3.9 in) |
| 2021 | 59.7 mm (2.4 in) |
| 2022 | 97.5 mm (3.8 in) |
| 2023 | 81.3 mm (3.2 in) |
| 2024 | 139.7 mm (5.5 in) |
| 2025 | 114.8 mm (4.5 in) |
| 2026 | 140.8 mm (5.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1938 | 10 days |
| 1941 | 21 days |
| 1942 | 38 days |
| 1943 | 27 days |
| 1944 | 24 days |
| 1945 | 16 days |
| 1946 | 40 days |
| 1947 | 27 days |
| 1948 | 21 days |
| 1949 | 21 days |
| 1950 | 31 days |
| 1951 | 14 days |
| 1952 | 55 days |
| 1953 | 24 days |
| 1954 | 29 days |
| 1955 | 16 days |
| 1956 | 21 days |
| 1957 | 31 days |
| 1958 | 26 days |
| 1959 | 15 days |
| 1960 | 17 days |
| 1961 | 21 days |
| 1962 | 17 days |
| 1963 | 22 days |
| 1964 | 40 days |
| 1965 | 22 days |
| 1966 | 37 days |
| 1967 | 29 days |
| 1968 | 36 days |
| 1969 | 38 days |
| 1970 | 24 days |
| 1971 | 24 days |
| 1972 | 22 days |
| 1973 | 17 days |
| 1974 | 14 days |
| 1975 | 23 days |
| 1976 | 35 days |
| 1977 | 30 days |
| 1978 | 22 days |
| 1979 | 16 days |
| 1980 | 23 days |
| 1981 | 28 days |
| 1982 | 23 days |
| 1983 | 18 days |
| 1984 | 21 days |
| 1985 | 20 days |
| 1986 | 22 days |
| 1987 | 29 days |
| 1988 | 38 days |
| 1989 | 22 days |
| 1990 | 15 days |
| 1991 | 28 days |
| 1992 | 23 days |
| 1993 | 22 days |
| 1994 | 21 days |
| 1995 | 30 days |
| 1996 | 22 days |
| 1997 | 15 days |
| 1998 | 18 days |
| 1999 | 34 days |
| 2000 | 18 days |
| 2001 | 18 days |
| 2002 | 20 days |
| 2003 | 30 days |
| 2004 | 18 days |
| 2005 | 15 days |
| 2006 | 17 days |
| 2007 | 23 days |
| 2008 | 14 days |
| 2009 | 26 days |
| 2010 | 20 days |
| 2011 | 14 days |
| 2012 | 25 days |
| 2013 | 15 days |
| 2014 | 13 days |
| 2015 | 21 days |
| 2016 | 19 days |
| 2017 | 25 days |
| 2018 | 17 days |
| 2019 | 18 days |
| 2020 | 17 days |
| 2021 | 23 days |
| 2022 | 21 days |
| 2023 | 21 days |
| 2024 | 34 days |
| 2025 | 17 days |
| 2026 | 16 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
81 years with a frostAcross 81 years with a frost, the median last spring frost at Dubuque L&D 11 falls on 17 April and the median first autumn frost on 22 October, which leaves a median of 187 days between them.
In 1994 to 2025 the median growing season was 190 days. That is 5 days more than in 1941 to 1970.
Fitted over all years, the growing season changes by +1.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1941 to 1970) | Recent period (1994 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 17 April | 20 April | 16 April | 4 days earlier | -0.5 days per decade |
| First autumn frost | 22 October | 22 October | 22 October | no change | +0.6 days per decade |
| Growing days | 187 days | 185 days | 190 days | 5 days more | +1.1 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
84 years, 1941 to 2025A day with at least 63.1 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 178.0 mm (7.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 63.1 mm (2.5 in) | |
| 5 years | 85.5 mm (3.4 in) | |
| 10 years | 103.3 mm (4.1 in) | |
| 25 years | 129.5 mm (5.1 in) | |
| 50 years | 152.3 mm (6.0 in) | |
| 100 years | 178.0 mm (7.0 in) | Longer than the 84 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, 84 years of values from 1941 to 2025.
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: 223.5 mm (8.8 in) in 2011; 182.4 mm (7.2 in) in 2010; 133.9 mm (5.3 in) in 1972.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Dubuque L&D 11 had a mean temperature of 9.5 C (49.1 F) and 936.1 mm (36.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are De Kalb (United States, 168 km away), Kewanee 1E (United States, 157 km away) and Dixon Wwtp (United States, 122 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| De Kalb | United States | 168 km (104 mi) | 9.3 C (48.8 F) | 934.5 mm (36.8 in) | 0.83 |
| Kewanee 1E | United States | 157 km (98 mi) | 9.7 C (49.5 F) | 915.3 mm (36.0 in) | 0.84 |
| Dixon Wwtp | United States | 122 km (76 mi) | 9.2 C (48.6 F) | 888.0 mm (35.0 in) | 0.88 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).