Muscatine Weather Records (USC00135837)
Record envelope, standing records and threshold days for Muscatine (USC00135837), Iowa, United States, with 92 years of record.
Key Facts for Muscatine
- Muscatine (USC00135837) is a weather station in Iowa, United States at 41.41 latitude and -91.07 longitude, 167 m (549 ft) above sea level.
- The station reports from 1935 to 2026, 92 years of record.
- 1,464 records set at Muscatine still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Muscatine set a daily record precipitation of 47.0 mm (1.9 in) on 1 October 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, 41.41 latitude, -91.07 longitude.
- Elevation: 167 m (549 ft).
- Period of record: 1935 to 2026, 92 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.6 C (69.1 F) | -35.0 C (-31.0 F) | 15.0 C (59.0 F) | -24.4 C (-11.9 F) |
| Feb | 25.0 C (77.0 F) | -36.7 C (-34.1 F) | 22.2 C (72.0 F) | -16.1 C (3.0 F) |
| Mar | 31.7 C (89.1 F) | -27.8 C (-18.0 F) | 31.1 C (88.0 F) | -15.0 C (5.0 F) |
| Apr | 33.9 C (93.0 F) | -12.2 C (10.0 F) | 29.4 C (84.9 F) | -1.7 C (28.9 F) |
| May | 35.6 C (96.1 F) | -3.3 C (26.1 F) | 32.2 C (90.0 F) | 0.0 C (32.0 F) |
| Jun | 40.0 C (104.0 F) | 0.6 C (33.1 F) | 34.4 C (93.9 F) | 10.6 C (51.1 F) |
| Jul | 43.9 C (111.0 F) | 6.7 C (44.1 F) | 35.0 C (95.0 F) | 12.2 C (54.0 F) |
| Aug | 41.7 C (107.1 F) | 3.9 C (39.0 F) | 32.8 C (91.0 F) | 16.1 C (61.0 F) |
| Sep | 38.3 C (100.9 F) | -5.0 C (23.0 F) | n/a | n/a |
| Oct | 35.6 C (96.1 F) | -8.3 C (17.1 F) | n/a | n/a |
| Nov | 27.2 C (81.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Dec | 23.9 C (75.0 F) | -30.6 C (-23.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1935 | 5 |
| 1936 | 58 |
| 1937 | 18 |
| 1938 | 15 |
| 1939 | 27 |
| 1940 | 27 |
| 1941 | 15 |
| 1942 | 32 |
| 1943 | 20 |
| 1944 | 14 |
| 1945 | 25 |
| 1946 | 13 |
| 1947 | 21 |
| 1948 | 11 |
| 1949 | 11 |
| 1950 | 24 |
| 1951 | 17 |
| 1952 | 18 |
| 1953 | 16 |
| 1954 | 11 |
| 1955 | 15 |
| 1956 | 11 |
| 1957 | 7 |
| 1958 | 14 |
| 1959 | 13 |
| 1960 | 19 |
| 1961 | 8 |
| 1962 | 14 |
| 1963 | 30 |
| 1964 | 17 |
| 1965 | 15 |
| 1966 | 18 |
| 1967 | 10 |
| 1968 | 13 |
| 1969 | 12 |
| 1970 | 14 |
| 1971 | 6 |
| 1972 | 19 |
| 1973 | 10 |
| 1974 | 14 |
| 1975 | 13 |
| 1976 | 11 |
| 1977 | 10 |
| 1978 | 7 |
| 1979 | 12 |
| 1980 | 11 |
| 1981 | 9 |
| 1982 | 15 |
| 1983 | 36 |
| 1984 | 16 |
| 1985 | 18 |
| 1986 | 16 |
| 1987 | 18 |
| 1988 | 36 |
| 1989 | 18 |
| 1990 | 26 |
| 1991 | 36 |
| 1992 | 17 |
| 1993 | 8 |
| 1994 | 8 |
| 1995 | 5 |
| 1996 | 10 |
| 1997 | 14 |
| 1998 | 22 |
| 1999 | 12 |
| 2000 | 21 |
| 2001 | 11 |
| 2002 | 11 |
| 2003 | 10 |
| 2004 | 15 |
| 2005 | 15 |
| 2006 | 15 |
| 2007 | 11 |
| 2008 | 6 |
| 2009 | 17 |
| 2010 | 2 |
| 2011 | 9 |
| 2012 | 28 |
| 2013 | 14 |
| 2014 | 28 |
| 2015 | 13 |
| 2016 | 9 |
| 2017 | 24 |
| 2018 | 21 |
| 2019 | 17 |
| 2020 | 15 |
| 2021 | 16 |
| 2022 | 14 |
| 2023 | 12 |
| 2024 | 11 |
| 2025 | 10 |
| 2026 | 8 |
All-Time Record Progression
14 new records| Date | Kind | Detail |
|---|---|---|
| 1966-01-29 | Record low maximum temperature | Record low maximum temperature -22.2 C (-8.0 F) |
| 1967-06-07 | Record daily precipitation | Record daily precipitation 241.6 mm (9.5 in) |
| 1971-01-03 | Record daily snowfall | Record daily snowfall 33.0 cm (13.0 in) |
| 1979-01-13 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 1979-01-14 | Record snow depth | Record snow depth 58.4 cm (23.0 in) |
| 1979-01-19 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1980-08-20 | Record high minimum temperature | Record high minimum temperature 27.2 C (81.0 F) |
| 1982-01-10 | Record low minimum temperature | Record low minimum temperature -33.3 C (-27.9 F) |
| 1983-06-25 | Record high minimum temperature | Record high minimum temperature 29.4 C (84.9 F) |
| 1983-08-18 | Record high minimum temperature | Record high minimum temperature 30.0 C (86.0 F) |
| 1983-08-20 | Record high minimum temperature | Record high minimum temperature 31.7 C (89.1 F) |
| 1994-01-18 | Record low maximum temperature | Record low maximum temperature -22.8 C (-9.0 F) |
| 1996-02-03 | Record low minimum temperature | Record low minimum temperature -36.7 C (-34.1 F) |
| 2019-01-31 | Record low maximum temperature | Record low maximum temperature -23.3 C (-9.9 F) |
Wettest Day of Each Month
Jun: 241.6 mm (9.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 59.9 mm (2.4 in) | 12 January 1960 |
| Feb | 49.0 mm (1.9 in) | 9 February 2001 |
| Mar | 84.3 mm (3.3 in) | 4 March 1976 |
| Apr | 117.6 mm (4.6 in) | 24 April 1965 |
| May | 87.6 mm (3.4 in) | 10 May 1996 |
| Jun | 241.6 mm (9.5 in) | 7 June 1967 |
| Jul | 146.1 mm (5.8 in) | 10 July 1971 |
| Aug | 103.1 mm (4.1 in) | 27 August 2009 |
| Sep | 136.1 mm (5.4 in) | 13 September 1961 |
| Oct | 128.3 mm (5.1 in) | 10 October 1954 |
| Nov | 59.9 mm (2.4 in) | 13 November 1951 |
| Dec | 67.1 mm (2.6 in) | 26 December 1942 |
Period of Record Coverage
1935 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1935 | 115 | 32% | No |
| 1936 | 365 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 363 | 99% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 360 | 99% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 359 | 98% | Yes |
| 1947 | 275 | 75% | No |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 357 | 98% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 334 | 92% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 361 | 99% | Yes |
| 1981 | 324 | 89% | No |
| 1982 | 273 | 75% | No |
| 1983 | 358 | 98% | Yes |
| 1984 | 353 | 96% | Yes |
| 1985 | 360 | 99% | Yes |
| 1986 | 345 | 95% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 362 | 99% | Yes |
| 1989 | 363 | 99% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 364 | 99% | Yes |
| 1997 | 361 | 99% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 360 | 98% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 362 | 99% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 362 | 99% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 360 | 99% | Yes |
| 2011 | 360 | 99% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 363 | 99% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 351 | 96% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 363 | 99% | Yes |
| 2022 | 331 | 91% | Yes |
| 2023 | 360 | 99% | Yes |
| 2024 | 362 | 99% | Yes |
| 2025 | 359 | 98% | Yes |
| 2026 | 222 | 61% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 1 October 2026 | Muscatine, US | daily rain (Provisional) | 47.0 mm (1.9 in) | 20.3 mm (0.8 in) | 48 years | 39 of 100 (Notable) |
| 2 August 2026 | Muscatine, US | daily low max | 23.9 C (75.0 F) | 0.5 C (0.9 F) | 52 years | 25 of 100 (Routine) |
| 30 June 2026 | Muscatine, US | daily high min | 25.0 C (77.0 F) | 1.7 C (3.1 F) | 72 years | 34 of 100 (Routine) |
| 22 June 2026 | Muscatine, US | daily low max (Tie) | 18.3 C (64.9 F) | tie | 75 years | 7 of 100 (Routine) |
| 18 June 2026 | Muscatine, US | daily rain | 82.6 mm (3.3 in) | 10.2 mm (0.4 in) | 76 years | 37 of 100 (Notable) |
| 11 June 2026 | Muscatine, US | daily rain | 48.3 mm (1.9 in) | 18.3 mm (0.7 in) | 57 years | 37 of 100 (Notable) |
| 7 June 2026 | Muscatine, US | daily high max (Tie) | 34.4 C (93.9 F) | tie | 87 years | 8 of 100 (Routine) |
| 7 May 2026 | Muscatine, US | daily low min (Tie) | 0.0 C (32.0 F) | tie | 36 years | 5 of 100 (Routine) |
| 13 April 2026 | Muscatine, US | daily high min | 15.6 C (60.1 F) | 1.7 C (3.1 F) | 84 years | 37 of 100 (Notable) |
| 10 April 2026 | Muscatine, US | daily rain | 24.1 mm (0.9 in) | 0.5 mm (0.02 in) | 48 years | 20 of 100 (Routine) |
| 31 March 2026 | Muscatine, US | daily high max | 30.0 C (86.0 F) | 1.7 C (3.1 F) | 40 years | 23 of 100 (Routine) |
| 22 March 2026 | Muscatine, US | daily high max | 31.1 C (88.0 F) | 5.0 C (9.0 F) | 32 years | 24 of 100 (Routine) |
| 18 March 2026 | Muscatine, US | daily low min (Tie) | -15.0 C (5.0 F) | tie | 84 years | 8 of 100 (Routine) |
| 18 March 2026 | Muscatine, US | daily low max (Tie) | -2.8 C (27.0 F) | tie | 60 years | 6 of 100 (Routine) |
| 17 March 2026 | Muscatine, US | daily snowfall (Tie) | 2.5 cm (1.0 in) | tie | 41 years | 5 of 100 (Routine) |
| 16 March 2026 | Muscatine, US | daily rain | 26.9 mm (1.1 in) | 4.8 mm (0.19 in) | 9 years | 16 of 100 (Routine) |
| 10 March 2026 | Muscatine, US | daily high max | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 71 years | 31 of 100 (Routine) |
| 6 March 2026 | Muscatine, US | daily rain | 39.4 mm (1.6 in) | 18.6 mm (0.7 in) | 8 years | 30 of 100 (Routine) |
| 17 February 2026 | Muscatine, US | daily high max | 21.7 C (71.1 F) | 3.4 C (6.1 F) | 44 years | 27 of 100 (Routine) |
| 16 February 2026 | Muscatine, US | daily high max | 17.8 C (64.0 F) | 1.1 C (2.0 F) | 44 years | 23 of 100 (Routine) |
Climate Trend
83 complete years, 1936 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1936 | 9.8 C | -0.81 C |
| 1937 | 9.4 C | -1.15 C |
| 1938 | 11.4 C | +0.81 C |
| 1939 | 11.0 C | +0.39 C |
| 1940 | 9.4 C | -1.18 C |
| 1941 | 11.2 C | +0.60 C |
| 1942 | 10.1 C | -0.45 C |
| 1943 | 9.4 C | -1.15 C |
| 1944 | 10.5 C | -0.10 C |
| 1945 | 9.6 C | -1.00 C |
| 1946 | 11.0 C | +0.46 C |
| 1948 | 10.6 C | 0.00 C |
| 1949 | 11.1 C | +0.56 C |
| 1950 | 9.3 C | -1.27 C |
| 1951 | 9.3 C | -1.28 C |
| 1952 | 11.0 C | +0.41 C |
| 1953 | 11.6 C | +1.07 C |
| 1954 | 11.5 C | +0.93 C |
| 1955 | 10.9 C | +0.36 C |
| 1956 | 11.1 C | +0.55 C |
| 1957 | 10.8 C | +0.25 C |
| 1958 | 9.8 C | -0.74 C |
| 1959 | 10.2 C | -0.35 C |
| 1960 | 9.8 C | -0.81 C |
| 1961 | 10.3 C | -0.25 C |
| 1962 | 9.9 C | -0.69 C |
| 1963 | 10.4 C | -0.20 C |
| 1964 | 11.1 C | +0.58 C |
| 1965 | 10.3 C | -0.23 C |
| 1966 | 10.1 C | -0.45 C |
| 1967 | 9.9 C | -0.71 C |
| 1968 | 10.6 C | +0.08 C |
| 1969 | 9.9 C | -0.63 C |
| 1970 | 10.2 C | -0.32 C |
| 1971 | 10.8 C | +0.25 C |
| 1972 | 9.4 C | -1.17 C |
| 1973 | 11.3 C | +0.73 C |
| 1974 | 10.4 C | -0.13 C |
| 1975 | 10.7 C | +0.09 C |
| 1976 | 9.9 C | -0.70 C |
| 1977 | 10.6 C | +0.02 C |
| 1979 | 9.2 C | -1.32 C |
| 1980 | 10.3 C | -0.22 C |
| 1983 | 10.5 C | -0.02 C |
| 1984 | 10.3 C | -0.29 C |
| 1985 | 9.4 C | -1.15 C |
| 1987 | 12.3 C | +1.74 C |
| 1988 | 10.7 C | +0.18 C |
| 1989 | 9.6 C | -0.92 C |
| 1990 | 11.7 C | +1.11 C |
| 1991 | 11.5 C | +0.98 C |
| 1992 | 10.7 C | +0.10 C |
| 1993 | 9.9 C | -0.62 C |
| 1994 | 10.7 C | +0.16 C |
| 1995 | 10.4 C | -0.18 C |
| 1996 | 9.5 C | -1.04 C |
| 1997 | 10.3 C | -0.29 C |
| 1998 | 12.4 C | +1.87 C |
| 1999 | 11.6 C | +1.05 C |
| 2000 | 11.0 C | +0.42 C |
| 2001 | 11.4 C | +0.82 C |
| 2002 | 11.4 C | +0.87 C |
| 2003 | 10.7 C | +0.09 C |
| 2004 | 11.1 C | +0.53 C |
| 2005 | 11.7 C | +1.10 C |
| 2006 | 12.0 C | +1.43 C |
| 2007 | 11.2 C | +0.68 C |
| 2008 | 9.8 C | -0.81 C |
| 2009 | 10.1 C | -0.51 C |
| 2010 | 11.0 C | +0.43 C |
| 2011 | 11.2 C | +0.62 C |
| 2012 | 12.7 C | +2.17 C |
| 2013 | 9.6 C | -0.96 C |
| 2014 | 8.2 C | -2.34 C |
| 2015 | 10.4 C | -0.21 C |
| 2016 | 11.5 C | +0.98 C |
| 2017 | 11.0 C | +0.45 C |
| 2018 | 9.9 C | -0.70 C |
| 2019 | 10.0 C | -0.60 C |
| 2020 | 10.8 C | +0.26 C |
| 2023 | 11.5 C | +0.98 C |
| 2024 | 11.9 C | +1.33 C |
| 2025 | 10.4 C | -0.20 C |
The annual mean temperature here has risen by 0.08 C (0.01 to 0.15) per decade over 1936 to 2025. In Fahrenheit: 0.14 F (0.01 to 0.26) per decade. The slope is a straight line fitted to 83 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.08 C (0.01 to 0.15) per decade | 0.14 F (0.01 to 0.26) per decade | 1936 to 2025 | 83 | Rise |
| Mean daily maximum | 0.04 C (-0.04 to 0.12) per decade | 0.1 F (-0.1 to 0.2) per decade | 1936 to 2025 | 83 | Not clearly different from zero |
| Mean daily minimum | 0.11 C (0.03 to 0.19) per decade | 0.2 F (0.1 to 0.3) per decade | 1936 to 2025 | 83 | 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
1935 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 1936 | 36.4 C (97.5 F) | 92 |
| Coldest night (TNn) | -36.7 C (-34.1 F) | 1996 | -25.0 C (-13.0 F) | 92 |
| Wettest day (Rx1day) | 241.6 mm (9.5 in) | 1967 | 65.3 mm (2.6 in) | 92 |
| Wettest five days (Rx5day) | 273.1 mm (10.8 in) | 1967 | 96.8 mm (3.8 in) | 92 |
| Longest dry spell (CDD) | 54 days | 1952 | 22 days | 92 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1935 | 32.2 C (90.0 F) |
| 1936 | 43.9 C (111.0 F) |
| 1937 | 38.3 C (100.9 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 37.8 C (100.0 F) |
| 1940 | 42.2 C (108.0 F) |
| 1941 | 38.9 C (102.0 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 35.6 C (96.1 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 36.1 C (97.0 F) |
| 1947 | 39.4 C (102.9 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 33.9 C (93.0 F) |
| 1951 | 35.6 C (96.1 F) |
| 1952 | 36.1 C (97.0 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 38.3 C (100.9 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 40.0 C (104.0 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 36.7 C (98.1 F) |
| 1961 | 33.9 C (93.0 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 37.2 C (99.0 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 34.4 C (93.9 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 37.2 C (99.0 F) |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 36.1 C (97.0 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 37.2 C (99.0 F) |
| 1978 | 34.4 C (93.9 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 40.6 C (105.1 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 36.7 C (98.1 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 40.0 C (104.0 F) |
| 1988 | 40.6 C (105.1 F) |
| 1989 | 38.3 C (100.9 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 38.9 C (102.0 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 33.9 C (93.0 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 36.7 C (98.1 F) |
| 1999 | 37.8 C (100.0 F) |
| 2000 | 37.2 C (99.0 F) |
| 2001 | 36.1 C (97.0 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 36.7 C (98.1 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 38.3 C (100.9 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 38.3 C (100.9 F) |
| 2014 | 33.9 C (93.0 F) |
| 2015 | 35.6 C (96.1 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 35.6 C (96.1 F) |
| 2018 | 36.1 C (97.0 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 35.0 C (95.0 F) |
| 2021 | 36.1 C (97.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 36.1 C (97.0 F) |
| 2025 | 36.1 C (97.0 F) |
| 2026 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1935 | -25.0 C (-13.0 F) |
| 1936 | -31.1 C (-24.0 F) |
| 1937 | -21.1 C (-6.0 F) |
| 1938 | -21.1 C (-6.0 F) |
| 1939 | -20.0 C (-4.0 F) |
| 1940 | -28.3 C (-18.9 F) |
| 1941 | -21.1 C (-6.0 F) |
| 1942 | -30.6 C (-23.1 F) |
| 1943 | -26.7 C (-16.1 F) |
| 1944 | -23.9 C (-11.0 F) |
| 1945 | -23.9 C (-11.0 F) |
| 1946 | -22.2 C (-8.0 F) |
| 1947 | -28.9 C (-20.0 F) |
| 1948 | -21.1 C (-6.0 F) |
| 1949 | -23.3 C (-9.9 F) |
| 1950 | -23.3 C (-9.9 F) |
| 1951 | -25.6 C (-14.1 F) |
| 1952 | -20.6 C (-5.1 F) |
| 1953 | -21.1 C (-6.0 F) |
| 1954 | -22.8 C (-9.0 F) |
| 1955 | -25.0 C (-13.0 F) |
| 1956 | -23.3 C (-9.9 F) |
| 1957 | -26.1 C (-15.0 F) |
| 1958 | -25.6 C (-14.1 F) |
| 1959 | -25.0 C (-13.0 F) |
| 1960 | -25.0 C (-13.0 F) |
| 1961 | -23.9 C (-11.0 F) |
| 1962 | -27.2 C (-17.0 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -19.4 C (-2.9 F) |
| 1965 | -25.0 C (-13.0 F) |
| 1966 | -28.9 C (-20.0 F) |
| 1967 | -24.4 C (-11.9 F) |
| 1968 | -26.1 C (-15.0 F) |
| 1969 | -23.9 C (-11.0 F) |
| 1970 | -29.4 C (-20.9 F) |
| 1971 | -25.0 C (-13.0 F) |
| 1972 | -26.7 C (-16.1 F) |
| 1973 | -22.2 C (-8.0 F) |
| 1974 | -29.4 C (-20.9 F) |
| 1975 | -22.8 C (-9.0 F) |
| 1976 | -25.0 C (-13.0 F) |
| 1977 | -28.9 C (-20.0 F) |
| 1978 | -22.8 C (-9.0 F) |
| 1979 | -28.3 C (-18.9 F) |
| 1980 | -22.8 C (-9.0 F) |
| 1981 | -24.4 C (-11.9 F) |
| 1982 | -33.3 C (-27.9 F) |
| 1983 | -28.9 C (-20.0 F) |
| 1984 | -27.8 C (-18.0 F) |
| 1985 | -30.6 C (-23.1 F) |
| 1986 | -23.9 C (-11.0 F) |
| 1987 | -21.1 C (-6.0 F) |
| 1988 | -25.0 C (-13.0 F) |
| 1989 | -30.6 C (-23.1 F) |
| 1990 | -21.1 C (-6.0 F) |
| 1991 | -22.2 C (-8.0 F) |
| 1992 | -22.2 C (-8.0 F) |
| 1993 | -22.8 C (-9.0 F) |
| 1994 | -31.1 C (-24.0 F) |
| 1995 | -23.3 C (-9.9 F) |
| 1996 | -36.7 C (-34.1 F) |
| 1997 | -26.7 C (-16.1 F) |
| 1998 | -22.2 C (-8.0 F) |
| 1999 | -31.7 C (-25.1 F) |
| 2000 | -27.8 C (-18.0 F) |
| 2001 | -23.9 C (-11.0 F) |
| 2002 | -22.8 C (-9.0 F) |
| 2003 | -22.2 C (-8.0 F) |
| 2004 | -23.9 C (-11.0 F) |
| 2005 | -23.9 C (-11.0 F) |
| 2006 | -22.2 C (-8.0 F) |
| 2007 | -23.3 C (-9.9 F) |
| 2008 | -24.4 C (-11.9 F) |
| 2009 | -33.3 C (-27.9 F) |
| 2010 | -26.7 C (-16.1 F) |
| 2011 | -27.2 C (-17.0 F) |
| 2012 | -19.4 C (-2.9 F) |
| 2013 | -25.0 C (-13.0 F) |
| 2014 | -28.9 C (-20.0 F) |
| 2015 | -27.8 C (-18.0 F) |
| 2016 | -26.1 C (-15.0 F) |
| 2017 | -23.3 C (-9.9 F) |
| 2018 | -30.6 C (-23.1 F) |
| 2019 | -35.0 C (-31.0 F) |
| 2020 | -23.3 C (-9.9 F) |
| 2021 | -26.1 C (-15.0 F) |
| 2022 | -23.9 C (-11.0 F) |
| 2023 | -18.9 C (-2.0 F) |
| 2024 | -29.4 C (-20.9 F) |
| 2025 | -25.6 C (-14.1 F) |
| 2026 | -24.4 C (-11.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1935 | 40.6 mm (1.6 in) |
| 1936 | 42.7 mm (1.7 in) |
| 1937 | 41.9 mm (1.6 in) |
| 1938 | 53.3 mm (2.1 in) |
| 1939 | 68.1 mm (2.7 in) |
| 1940 | 33.3 mm (1.3 in) |
| 1941 | 45.2 mm (1.8 in) |
| 1942 | 67.1 mm (2.6 in) |
| 1943 | 56.1 mm (2.2 in) |
| 1944 | 37.6 mm (1.5 in) |
| 1945 | 61.7 mm (2.4 in) |
| 1946 | 71.1 mm (2.8 in) |
| 1947 | 105.4 mm (4.1 in) |
| 1948 | 104.4 mm (4.1 in) |
| 1949 | 113.8 mm (4.5 in) |
| 1950 | 72.4 mm (2.9 in) |
| 1951 | 59.9 mm (2.4 in) |
| 1952 | 83.8 mm (3.3 in) |
| 1953 | 58.9 mm (2.3 in) |
| 1954 | 128.3 mm (5.1 in) |
| 1955 | 52.3 mm (2.1 in) |
| 1956 | 42.4 mm (1.7 in) |
| 1957 | 37.6 mm (1.5 in) |
| 1958 | 50.3 mm (2.0 in) |
| 1959 | 50.0 mm (2.0 in) |
| 1960 | 71.6 mm (2.8 in) |
| 1961 | 136.1 mm (5.4 in) |
| 1962 | 62.5 mm (2.5 in) |
| 1963 | 72.4 mm (2.9 in) |
| 1964 | 51.8 mm (2.0 in) |
| 1965 | 117.6 mm (4.6 in) |
| 1966 | 42.2 mm (1.7 in) |
| 1967 | 241.6 mm (9.5 in) |
| 1968 | 50.3 mm (2.0 in) |
| 1969 | 38.4 mm (1.5 in) |
| 1970 | 94.0 mm (3.7 in) |
| 1971 | 146.1 mm (5.8 in) |
| 1972 | 72.9 mm (2.9 in) |
| 1973 | 72.9 mm (2.9 in) |
| 1974 | 39.6 mm (1.6 in) |
| 1975 | 36.6 mm (1.4 in) |
| 1976 | 84.3 mm (3.3 in) |
| 1977 | 90.9 mm (3.6 in) |
| 1978 | 53.3 mm (2.1 in) |
| 1979 | 46.2 mm (1.8 in) |
| 1980 | 63.8 mm (2.5 in) |
| 1981 | 70.6 mm (2.8 in) |
| 1982 | 80.0 mm (3.1 in) |
| 1983 | 64.5 mm (2.5 in) |
| 1984 | 79.5 mm (3.1 in) |
| 1985 | 56.6 mm (2.2 in) |
| 1986 | 75.4 mm (3.0 in) |
| 1987 | 87.9 mm (3.5 in) |
| 1988 | 54.1 mm (2.1 in) |
| 1989 | 55.9 mm (2.2 in) |
| 1990 | 104.6 mm (4.1 in) |
| 1991 | 42.7 mm (1.7 in) |
| 1992 | 73.9 mm (2.9 in) |
| 1993 | 85.1 mm (3.4 in) |
| 1994 | 34.8 mm (1.4 in) |
| 1995 | 58.4 mm (2.3 in) |
| 1996 | 87.6 mm (3.4 in) |
| 1997 | 67.1 mm (2.6 in) |
| 1998 | 78.7 mm (3.1 in) |
| 1999 | 69.1 mm (2.7 in) |
| 2000 | 91.7 mm (3.6 in) |
| 2001 | 74.7 mm (2.9 in) |
| 2002 | 58.4 mm (2.3 in) |
| 2003 | 66.0 mm (2.6 in) |
| 2004 | 49.5 mm (1.9 in) |
| 2005 | 33.8 mm (1.3 in) |
| 2006 | 53.8 mm (2.1 in) |
| 2007 | 81.3 mm (3.2 in) |
| 2008 | 84.8 mm (3.3 in) |
| 2009 | 103.1 mm (4.1 in) |
| 2010 | 48.8 mm (1.9 in) |
| 2011 | 40.1 mm (1.6 in) |
| 2012 | 64.3 mm (2.5 in) |
| 2013 | 82.3 mm (3.2 in) |
| 2014 | 127.0 mm (5.0 in) |
| 2015 | 125.0 mm (4.9 in) |
| 2016 | 82.3 mm (3.2 in) |
| 2017 | 59.7 mm (2.4 in) |
| 2018 | 94.0 mm (3.7 in) |
| 2019 | 53.1 mm (2.1 in) |
| 2020 | 53.3 mm (2.1 in) |
| 2021 | 57.2 mm (2.3 in) |
| 2022 | 55.9 mm (2.2 in) |
| 2023 | 48.3 mm (1.9 in) |
| 2024 | 99.1 mm (3.9 in) |
| 2025 | 81.3 mm (3.2 in) |
| 2026 | 82.6 mm (3.3 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1935 | 84.8 mm (3.3 in) |
| 1936 | 99.8 mm (3.9 in) |
| 1937 | 54.3 mm (2.1 in) |
| 1938 | 95.8 mm (3.8 in) |
| 1939 | 96.1 mm (3.8 in) |
| 1940 | 51.3 mm (2.0 in) |
| 1941 | 97.5 mm (3.8 in) |
| 1942 | 80.3 mm (3.2 in) |
| 1943 | 94.5 mm (3.7 in) |
| 1944 | 76.4 mm (3.0 in) |
| 1945 | 78.4 mm (3.1 in) |
| 1946 | 91.4 mm (3.6 in) |
| 1947 | 105.4 mm (4.1 in) |
| 1948 | 134.4 mm (5.3 in) |
| 1949 | 115.6 mm (4.6 in) |
| 1950 | 96.8 mm (3.8 in) |
| 1951 | 83.0 mm (3.3 in) |
| 1952 | 109.8 mm (4.3 in) |
| 1953 | 87.1 mm (3.4 in) |
| 1954 | 145.0 mm (5.7 in) |
| 1955 | 70.6 mm (2.8 in) |
| 1956 | 79.3 mm (3.1 in) |
| 1957 | 78.0 mm (3.1 in) |
| 1958 | 82.6 mm (3.3 in) |
| 1959 | 111.3 mm (4.4 in) |
| 1960 | 87.6 mm (3.4 in) |
| 1961 | 162.8 mm (6.4 in) |
| 1962 | 75.2 mm (3.0 in) |
| 1963 | 96.0 mm (3.8 in) |
| 1964 | 92.7 mm (3.6 in) |
| 1965 | 146.8 mm (5.8 in) |
| 1966 | 107.8 mm (4.2 in) |
| 1967 | 273.1 mm (10.8 in) |
| 1968 | 68.9 mm (2.7 in) |
| 1969 | 78.7 mm (3.1 in) |
| 1970 | 169.9 mm (6.7 in) |
| 1971 | 161.4 mm (6.4 in) |
| 1972 | 88.9 mm (3.5 in) |
| 1973 | 117.6 mm (4.6 in) |
| 1974 | 96.7 mm (3.8 in) |
| 1975 | 63.0 mm (2.5 in) |
| 1976 | 97.7 mm (3.8 in) |
| 1977 | 130.8 mm (5.1 in) |
| 1978 | 70.5 mm (2.8 in) |
| 1979 | 61.4 mm (2.4 in) |
| 1980 | 79.3 mm (3.1 in) |
| 1981 | 110.4 mm (4.3 in) |
| 1982 | 141.2 mm (5.6 in) |
| 1983 | 88.4 mm (3.5 in) |
| 1984 | 135.9 mm (5.4 in) |
| 1985 | 81.3 mm (3.2 in) |
| 1986 | 95.7 mm (3.8 in) |
| 1987 | 127.3 mm (5.0 in) |
| 1988 | 77.0 mm (3.0 in) |
| 1989 | 121.4 mm (4.8 in) |
| 1990 | 179.4 mm (7.1 in) |
| 1991 | 57.9 mm (2.3 in) |
| 1992 | 116.6 mm (4.6 in) |
| 1993 | 143.1 mm (5.6 in) |
| 1994 | 58.2 mm (2.3 in) |
| 1995 | 93.5 mm (3.7 in) |
| 1996 | 136.7 mm (5.4 in) |
| 1997 | 89.5 mm (3.5 in) |
| 1998 | 97.8 mm (3.9 in) |
| 1999 | 88.2 mm (3.5 in) |
| 2000 | 112.3 mm (4.4 in) |
| 2001 | 121.9 mm (4.8 in) |
| 2002 | 85.8 mm (3.4 in) |
| 2003 | 74.4 mm (2.9 in) |
| 2004 | 69.8 mm (2.7 in) |
| 2005 | 49.0 mm (1.9 in) |
| 2006 | 54.8 mm (2.2 in) |
| 2007 | 130.9 mm (5.2 in) |
| 2008 | 120.2 mm (4.7 in) |
| 2009 | 131.8 mm (5.2 in) |
| 2010 | 102.2 mm (4.0 in) |
| 2011 | 63.5 mm (2.5 in) |
| 2012 | 113.5 mm (4.5 in) |
| 2013 | 104.4 mm (4.1 in) |
| 2014 | 155.5 mm (6.1 in) |
| 2015 | 125.0 mm (4.9 in) |
| 2016 | 88.2 mm (3.5 in) |
| 2017 | 114.3 mm (4.5 in) |
| 2018 | 159.0 mm (6.3 in) |
| 2019 | 116.1 mm (4.6 in) |
| 2020 | 130.6 mm (5.1 in) |
| 2021 | 110.2 mm (4.3 in) |
| 2022 | 65.8 mm (2.6 in) |
| 2023 | 96.8 mm (3.8 in) |
| 2024 | 130.9 mm (5.2 in) |
| 2025 | 144.8 mm (5.7 in) |
| 2026 | 149.7 mm (5.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1935 | 13 days |
| 1936 | 26 days |
| 1937 | 22 days |
| 1938 | 23 days |
| 1939 | 29 days |
| 1940 | 20 days |
| 1941 | 18 days |
| 1942 | 25 days |
| 1943 | 27 days |
| 1944 | 27 days |
| 1945 | 20 days |
| 1946 | 16 days |
| 1947 | 21 days |
| 1948 | 32 days |
| 1949 | 22 days |
| 1950 | 30 days |
| 1951 | 16 days |
| 1952 | 54 days |
| 1953 | 23 days |
| 1954 | 19 days |
| 1955 | 28 days |
| 1956 | 27 days |
| 1957 | 29 days |
| 1958 | 26 days |
| 1959 | 17 days |
| 1960 | 18 days |
| 1961 | 21 days |
| 1962 | 17 days |
| 1963 | 22 days |
| 1964 | 19 days |
| 1965 | 19 days |
| 1966 | 34 days |
| 1967 | 21 days |
| 1968 | 18 days |
| 1969 | 23 days |
| 1970 | 16 days |
| 1971 | 25 days |
| 1972 | 16 days |
| 1973 | 18 days |
| 1974 | 15 days |
| 1975 | 14 days |
| 1976 | 25 days |
| 1977 | 25 days |
| 1978 | 22 days |
| 1979 | 24 days |
| 1980 | 23 days |
| 1981 | 31 days |
| 1982 | 18 days |
| 1983 | 25 days |
| 1984 | 27 days |
| 1985 | 17 days |
| 1986 | 21 days |
| 1987 | 29 days |
| 1988 | 37 days |
| 1989 | 33 days |
| 1990 | 16 days |
| 1991 | 32 days |
| 1992 | 16 days |
| 1993 | 24 days |
| 1994 | 22 days |
| 1995 | 29 days |
| 1996 | 18 days |
| 1997 | 17 days |
| 1998 | 19 days |
| 1999 | 37 days |
| 2000 | 18 days |
| 2001 | 14 days |
| 2002 | 22 days |
| 2003 | 21 days |
| 2004 | 20 days |
| 2005 | 17 days |
| 2006 | 20 days |
| 2007 | 26 days |
| 2008 | 14 days |
| 2009 | 24 days |
| 2010 | 15 days |
| 2011 | 24 days |
| 2012 | 24 days |
| 2013 | 42 days |
| 2014 | 19 days |
| 2015 | 20 days |
| 2016 | 23 days |
| 2017 | 20 days |
| 2018 | 16 days |
| 2019 | 13 days |
| 2020 | 19 days |
| 2021 | 26 days |
| 2022 | 26 days |
| 2023 | 27 days |
| 2024 | 22 days |
| 2025 | 19 days |
| 2026 | 39 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
83 years with a frostAcross 83 years with a frost, the median last spring frost at Muscatine falls on 22 April and the median first autumn frost on 14 October, which leaves a median of 174 days between them.
In 1994 to 2025 the median growing season was 178 days. That is 10 days more than in 1936 to 1966.
Fitted over all years, the growing season changes by +1.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1936 to 1966) | Recent period (1994 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 22 April | 23 April | 19 April | 4 days earlier | -0.9 days per decade |
| First autumn frost | 14 October | 12 October | 17 October | 5 days later | +1.0 days per decade |
| Growing days | 174 days | 168 days | 178 days | 10 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
87 years, 1936 to 2025A day with at least 64.3 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 181.0 mm (7.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 64.3 mm (2.5 in) | |
| 5 years | 89.4 mm (3.5 in) | |
| 10 years | 108.2 mm (4.3 in) | |
| 25 years | 134.9 mm (5.3 in) | |
| 50 years | 156.9 mm (6.2 in) | |
| 100 years | 181.0 mm (7.1 in) | Longer than the 87 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, 87 years of values from 1936 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: 241.6 mm (9.5 in) in 1967; 146.1 mm (5.8 in) in 1971; 136.1 mm (5.4 in) in 1961.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Muscatine, at 1983 and 2013. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1983 ran 0.2 C (0.4 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2013 ran 0.4 C (0.6 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1983 | -0.2 | -0.4 | likely | 5 |
| 2013 | -0.4 | -0.6 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2009 to 2025 against 1961 to 1990Over 2009 to 2025, Muscatine had a mean temperature of 10.7 C (51.2 F) and 1,077.3 mm (42.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Champaign 3S (United States, 280 km away), Lacon (United States, 145 km away) and Rushville (United States, 149 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Champaign 3S | United States | 280 km (174 mi) | 10.9 C (51.5 F) | 1,008.5 mm (39.7 in) | 0.66 |
| Lacon | United States | 145 km (90 mi) | 10.6 C (51.2 F) | 958.5 mm (37.7 in) | 0.71 |
| Rushville | United States | 149 km (93 mi) | 11.1 C (52.0 F) | 989.7 mm (39.0 in) | 0.75 |
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).