IEM "Climodat" Reports
These "Climodat" reports provide some answers to the most common climatological questions we get routinely asked. Here are some important notes about the products presented on this page.
- These reports are based on the daily climate observations from the NWS COOP network. Some quality control is done and estimating is done to create a complete time series without missing data. You can download the daily data.
- There is a station monitor app that allows you to see current summarized statistics for a station collection of your choice.
- The Automated Data Plotting application on this website contains charts and downloadable datasets that may interest you.
Data is available from the following states:
Download This Report Download This Report as Excel View This Report in Autoplot App
# IEM Climodat https://mesonet.agron.iastate.edu/climodat/ # Report Generated: 16 Oct 2026 # Climate Record: 1893-01-01 -> 2026-10-16, WYEAR column is Water Year Oct 1 - Sep 30 # Site Information: [IAC005] Iowa - Central Climate Division # Contact Information: Daryl Herzmann akrherz@iastate.edu 515.294.5978 # Monthly Liquid Precip Totals [inches] (snow is melted) YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN WYEAR 1893 0.42 1.25 1.70 4.17 3.34 4.30 2.80 1.98 1.57 0.89 0.89 1.40 24.71 21.53 1894 0.91 0.73 2.00 3.11 1.31 2.18 0.26 1.21 3.03 2.95 0.53 0.86 19.08 17.92 1895 0.77 0.54 0.66 2.93 3.64 4.38 3.12 4.55 3.29 0.51 1.36 1.61 27.36 28.22 1896 0.42 0.64 1.04 5.14 6.71 2.98 8.35 3.89 4.20 3.11 1.51 0.58 38.57 36.85 1897 1.71 0.87 2.14 5.94 2.20 3.66 3.17 1.82 2.22 1.04 0.49 1.78 27.04 28.93 1898 1.66 1.11 1.50 2.14 4.71 5.27 2.45 3.30 2.77 3.92 1.56 0.43 30.82 28.22 1899 0.23 0.66 1.28 2.38 6.57 4.75 3.12 3.55 0.92 1.43 1.33 1.72 27.94 29.37 1900 0.42 1.00 2.75 2.61 3.31 6.64 6.72 5.70 5.47 4.02 1.02 0.47 40.13 39.10 1901 0.74 1.07 2.54 1.95 2.36 3.63 2.41 1.24 4.29 2.24 0.77 0.92 24.16 25.74 1902 0.95 0.70 1.49 1.75 5.66 7.83 8.82 7.56 4.73 2.87 2.11 2.11 46.58 43.42 1903 0.23 1.23 1.04 2.49 9.66 2.87 5.37 4.89 2.87 1.68 0.40 0.22 32.95 37.74 1904 0.98 0.59 1.96 3.75 3.30 2.92 4.12 3.51 2.99 1.62 0.13 1.62 27.49 26.42 1905 0.94 1.50 2.35 3.43 6.11 4.99 4.28 4.18 3.00 3.60 2.85 0.46 37.69 34.15 1906 1.93 1.15 2.11 2.64 3.01 3.72 3.46 3.84 3.59 1.68 2.24 1.42 30.79 32.36 1907 1.23 0.82 1.57 1.11 3.93 5.29 7.09 4.86 2.50 1.98 1.00 0.80 32.18 33.74 1908 0.57 1.56 1.37 2.58 7.41 4.87 3.37 5.28 0.96 4.21 1.39 0.68 34.25 31.75 1909 1.99 1.36 1.64 4.95 4.29 6.34 4.07 1.12 3.74 1.94 5.77 2.27 39.48 35.78 1910 1.64 0.48 0.27 1.19 2.78 2.93 1.55 3.43 3.98 0.70 0.34 0.33 19.62 28.23 1911 0.92 3.07 0.77 3.34 4.82 2.44 1.59 2.86 6.05 4.11 1.29 2.39 33.65 27.23 1912 0.63 1.48 2.39 2.58 3.91 3.20 4.00 3.54 5.46 3.99 0.91 0.63 32.72 34.98 1913 1.13 0.66 3.24 3.48 6.41 3.22 1.53 3.30 3.09 3.32 1.08 0.82 31.28 31.59 1914 0.86 0.94 1.75 2.53 3.36 5.52 2.31 1.74 9.50 3.67 0.25 1.29 33.72 33.73 1915 1.63 3.18 0.94 1.74 7.80 3.94 8.71 2.54 6.51 1.29 1.78 0.63 40.69 42.20 1916 2.32 0.80 1.05 2.68 4.33 2.73 1.40 2.45 4.25 2.04 1.38 1.13 26.56 25.71 1917 0.71 0.36 1.67 5.05 3.64 7.17 2.19 2.10 2.47 1.46 0.31 0.79 27.92 29.91 1918 0.70 0.99 0.37 2.29 7.90 7.63 3.09 2.59 1.42 4.06 1.84 1.22 34.10 29.54 1919 0.20 2.62 2.00 5.47 2.70 5.34 2.22 3.02 6.30 3.86 3.44 0.59 37.76 36.99 1920 0.31 0.63 2.83 4.16 3.28 2.52 4.78 2.34 3.25 1.95 2.37 0.98 29.40 31.99 1921 0.46 1.03 1.18 3.55 3.61 3.68 1.55 6.46 7.96 1.53 0.69 0.95 32.65 34.78 1922 0.73 1.44 2.01 3.08 4.85 1.15 7.82 3.10 2.20 2.33 2.85 0.34 31.90 29.55 1923 0.96 0.36 2.60 2.03 2.79 5.21 1.24 5.78 4.99 1.09 0.59 0.49 28.13 31.48 1924 0.97 1.28 3.33 1.85 1.53 7.82 4.22 4.44 3.10 0.72 0.51 1.53 31.30 30.71 1925 0.23 0.38 0.85 1.22 1.11 4.99 3.80 4.79 5.64 3.11 0.48 1.23 27.83 25.77 1926 0.76 0.67 0.98 0.63 2.05 3.20 3.52 3.36 10.90 1.59 1.87 1.01 30.54 30.89 1927 0.21 0.99 1.51 3.83 5.23 1.25 1.82 2.34 4.89 2.73 0.65 0.85 26.30 26.54 1928 0.09 2.25 1.34 2.84 1.95 5.35 3.99 6.69 2.76 3.27 3.86 0.85 35.24 31.49 1929 2.22 1.55 1.29 3.92 2.48 2.07 4.90 3.25 4.12 2.36 1.09 0.41 29.66 33.78 1930 1.31 0.62 1.02 2.81 3.65 5.47 1.37 1.62 2.16 1.94 1.86 0.44 24.27 23.89 1931 0.55 0.15 1.64 2.38 2.53 3.81 3.76 3.14 7.28 2.42 7.18 2.87 37.71 29.48 1932 1.95 0.64 1.21 1.25 4.43 5.92 2.87 7.45 2.23 1.49 1.90 1.29 32.63 40.42 1933 0.89 0.20 2.78 1.14 5.39 0.90 3.18 2.34 3.85 2.06 0.26 0.91 23.90 25.35 1934 1.18 0.61 0.89 0.75 1.02 2.26 4.34 2.62 4.95 1.19 5.10 0.39 25.30 21.85 1935 1.46 1.55 1.45 1.41 4.63 8.61 3.32 1.72 4.14 3.58 2.80 1.15 35.82 34.97 1936 1.79 1.28 1.36 1.25 2.78 3.41 0.50 3.20 8.36 1.53 0.71 1.67 27.84 31.46 1937 1.98 1.26 1.73 3.31 4.05 3.78 1.93 4.59 1.42 1.67 0.75 0.76 27.23 27.96 1938 1.15 0.66 2.47 4.32 6.51 3.63 4.59 2.97 4.70 1.03 2.33 0.70 35.06 34.18 1939 0.89 2.02 1.42 1.61 1.54 5.39 2.98 3.99 1.15 1.48 0.59 0.64 23.70 25.05 1940 0.78 1.41 1.54 3.35 2.55 2.98 5.37 6.71 0.87 2.11 2.70 1.40 31.77 28.27 1941 1.74 0.40 0.78 1.54 2.30 6.69 2.38 2.46 8.03 5.68 1.87 2.17 36.04 32.53 1942 0.94 1.01 1.90 1.06 5.03 6.08 5.46 3.20 3.63 1.92 1.56 1.07 32.86 38.03 1943 0.61 0.70 1.48 3.26 4.66 5.66 5.46 5.51 2.94 1.39 0.83 0.79 33.29 34.83 1944 1.52 0.88 2.19 4.00 9.21 5.52 4.68 5.71 2.20 0.77 1.31 1.35 39.34 38.92 1945 0.61 1.51 3.45 4.70 6.57 3.88 2.40 3.77 4.34 0.32 1.29 2.23 35.07 34.66 1946 2.28 0.17 4.29 1.05 5.21 6.96 2.57 3.33 4.58 3.95 1.30 0.50 36.19 34.28 1947 1.41 0.33 1.41 5.13 4.60 12.42 1.17 1.44 1.26 5.67 1.90 1.42 38.16 34.92 1948 0.19 2.16 2.87 2.65 2.10 3.08 4.00 2.20 1.47 1.74 2.95 1.90 27.31 29.71 1949 2.83 0.96 2.47 1.17 1.94 4.63 1.99 1.70 2.79 1.98 0.66 0.75 23.87 27.07 1950 1.37 1.82 1.76 2.03 6.51 5.49 5.21 2.16 2.51 0.82 0.49 0.72 30.89 32.25 1951 0.57 2.39 5.83 6.39 5.81 5.84 5.16 6.05 2.86 2.50 1.57 1.00 45.97 42.93 1952 2.35 0.51 3.87 2.58 4.35 4.26 3.45 2.98 0.59 0.05 2.64 1.10 28.73 30.01 1953 0.88 1.65 2.35 3.86 2.35 5.18 2.58 0.58 0.47 0.14 1.95 1.10 23.09 23.69 1954 0.30 1.22 2.52 4.37 4.05 4.85 1.29 6.05 1.66 4.39 0.42 0.90 32.02 29.50 1955 0.75 1.85 1.34 4.56 3.18 1.82 2.66 0.82 3.98 1.81 0.42 0.41 23.60 26.67 1956 0.27 0.56 1.46 2.71 4.83 2.33 3.85 3.36 1.64 1.26 2.43 0.50 25.20 23.65 1957 0.55 0.38 1.94 2.53 5.18 3.28 2.95 3.60 2.45 2.13 2.94 0.99 28.92 27.05 1958 0.63 0.27 0.60 2.94 1.13 4.25 7.85 2.66 3.31 1.25 0.98 0.16 26.03 29.70 1959 0.86 1.46 4.08 3.34 6.96 2.77 2.97 5.61 4.68 3.79 2.36 1.64 40.52 35.12 1960 2.89 1.30 1.63 3.98 7.64 4.42 2.50 5.42 4.58 1.89 1.10 0.58 37.93 42.15 1961 0.29 2.07 6.03 2.24 3.13 2.21 6.49 2.16 6.27 3.47 3.15 2.16 39.67 34.46 1962 0.27 1.98 1.89 2.11 5.45 1.78 6.53 2.19 2.63 3.20 0.45 0.25 28.73 33.61 1963 0.59 0.67 2.51 3.99 3.52 1.36 4.24 3.54 4.15 1.55 0.89 0.45 27.46 28.47 1964 0.51 0.17 1.50 4.05 4.83 3.83 3.21 4.53 4.55 0.37 1.31 1.01 29.87 30.07 1965 0.80 1.78 3.71 4.27 4.79 3.46 3.25 4.14 8.73 1.48 1.75 1.73 39.89 37.62 1966 1.13 0.48 2.81 2.11 3.76 4.75 1.41 1.43 0.82 2.12 0.31 1.31 22.44 23.66 1967 1.41 0.65 1.12 3.11 3.59 10.67 1.11 2.28 1.86 2.61 0.56 1.00 29.97 29.54 1968 0.79 0.25 1.49 4.77 2.75 5.09 3.28 3.95 4.51 2.04 1.00 1.98 31.90 31.05 1969 1.84 1.01 1.35 4.28 3.87 9.78 4.99 2.54 2.69 3.46 0.46 1.76 38.03 37.37 1970 0.09 0.09 2.06 3.07 6.79 4.28 1.86 4.96 7.30 5.10 1.71 1.34 38.65 36.18 1971 1.54 2.69 1.62 1.25 3.67 2.91 2.55 0.33 2.63 3.21 2.88 1.53 26.81 27.34 1972 0.55 0.63 1.06 3.87 5.41 3.56 6.38 3.78 5.46 3.56 2.19 1.81 38.26 38.32 1973 2.08 1.37 4.11 5.75 7.79 2.27 4.86 1.90 7.30 1.52 2.25 1.97 43.17 44.99 1974 0.60 0.85 2.15 3.65 7.49 4.58 0.90 3.51 0.87 2.34 1.21 1.25 29.40 30.34 1975 1.43 0.73 1.96 3.82 3.04 4.48 0.71 2.97 1.56 0.22 4.24 0.62 25.78 25.50 1976 0.26 1.75 3.42 3.48 3.57 3.38 2.37 1.17 0.73 0.90 0.02 0.38 21.43 25.21 1977 0.40 1.00 3.93 3.13 2.91 2.67 2.89 7.80 4.47 3.68 1.05 0.89 34.82 30.50 1978 0.69 0.54 0.72 4.64 2.66 4.18 7.11 3.54 4.17 2.16 1.93 0.95 33.29 33.87 1979 1.46 0.46 4.24 3.29 2.94 5.02 2.33 6.91 1.18 3.01 2.45 0.30 33.59 32.87 1980 1.34 0.82 1.22 1.77 2.62 4.98 2.24 8.31 3.57 1.74 0.29 1.00 29.90 32.63 1981 0.03 1.55 0.45 3.15 1.57 5.05 3.82 4.64 2.57 2.13 1.93 1.16 28.05 25.86 1982 2.08 0.39 2.65 2.93 7.47 3.25 6.75 3.15 2.94 3.56 3.32 3.51 42.00 36.83 1983 0.81 1.33 3.37 3.07 5.65 5.12 4.55 3.15 4.30 4.34 5.20 0.89 41.78 41.74 1984 0.58 1.05 1.53 6.09 4.89 6.49 5.40 0.36 2.64 4.32 2.31 1.78 37.44 39.46 1985 0.58 1.25 2.62 1.27 2.05 3.13 2.12 4.20 5.14 2.97 1.52 1.32 28.17 30.77 1986 0.20 1.43 1.96 4.19 6.01 6.36 4.35 4.03 6.76 3.74 1.32 0.86 41.21 41.10 1987 0.25 0.04 3.21 2.26 3.40 2.26 5.62 9.30 1.93 0.73 2.88 1.90 33.78 34.19 1988 0.59 0.39 0.64 1.42 1.51 1.34 1.87 3.80 3.30 0.54 2.75 0.65 18.80 20.37 1989 1.19 0.53 0.69 1.96 3.06 3.19 3.12 3.34 4.29 2.86 0.15 0.25 24.63 25.31 1990 0.64 0.47 5.21 2.56 6.73 9.15 7.93 3.82 1.59 1.87 1.56 1.75 43.28 41.36 1991 0.83 0.15 4.76 7.59 5.77 4.63 1.27 3.69 3.01 3.24 4.27 1.63 40.84 36.88 1992 1.01 1.40 1.92 3.64 1.27 1.37 10.07 2.09 3.96 0.59 4.93 1.74 33.99 35.87 1993 1.07 1.20 3.53 3.28 5.70 8.32 11.19 11.84 3.78 1.53 0.97 0.64 53.05 57.17 1994 1.23 1.12 0.09 2.01 2.29 6.16 3.28 3.86 4.37 1.86 1.90 1.31 29.48 27.55 1995 0.85 0.27 2.72 5.09 4.77 3.73 3.48 3.07 2.71 1.49 1.94 0.36 30.48 31.76 1996 1.92 0.20 1.31 1.30 7.00 5.00 3.32 3.18 3.06 2.80 3.02 0.98 33.09 30.08 1997 0.94 1.29 1.50 2.10 4.21 4.99 2.52 1.85 2.99 4.06 1.00 0.98 28.43 29.19 1998 0.97 1.58 3.60 3.01 4.61 10.11 2.64 5.01 1.31 4.78 1.10 0.24 38.96 38.88 1999 1.10 0.77 1.00 5.95 5.23 5.84 4.38 3.79 1.45 0.41 1.11 0.47 31.50 35.63 2000 0.68 1.16 0.83 1.50 3.65 6.34 4.54 2.23 1.47 1.63 2.09 1.79 27.91 24.39 2001 1.28 1.90 1.19 3.08 6.58 3.50 2.55 3.12 4.40 2.43 1.18 0.66 31.87 33.11 2002 0.25 0.96 0.86 3.86 3.70 3.49 4.99 5.80 1.67 3.58 0.18 0.11 29.45 29.85 2003 0.36 0.81 0.98 3.89 5.32 4.73 4.92 0.74 2.85 1.13 4.71 1.17 31.61 28.47 2004 0.99 1.47 3.66 1.99 7.36 3.32 3.33 5.06 1.39 1.55 2.46 0.52 33.10 35.58 2005 1.08 1.53 1.25 3.30 3.92 5.52 3.47 3.04 3.02 0.42 1.45 1.29 29.29 30.66 2006 0.70 0.29 3.06 3.62 2.46 1.33 4.10 5.81 4.30 1.72 1.81 1.99 31.19 28.83 2007 1.11 2.04 2.62 5.33 5.11 3.43 3.03 8.58 2.87 5.31 0.17 2.50 42.10 39.64 2008 0.58 2.00 1.07 6.50 6.42 9.39 7.01 2.03 3.44 2.84 2.13 1.80 45.21 46.42 2009 0.95 0.51 3.61 4.42 3.60 5.32 2.94 5.93 2.23 6.24 0.86 2.87 39.48 36.28 2010 1.39 1.01 1.43 3.89 4.07 10.02 8.00 7.60 5.71 0.44 1.94 1.02 46.52 53.09 2011 0.82 1.23 1.51 3.80 4.45 5.67 2.96 2.02 1.85 0.92 2.18 2.21 29.62 27.71 2012 0.56 1.43 2.11 3.92 2.42 2.76 1.56 2.30 1.76 2.97 1.09 1.55 24.43 24.13 2013 0.91 1.33 2.38 6.65 10.36 4.33 1.51 0.66 1.80 2.57 1.89 0.66 35.05 35.54 2014 0.28 2.00 0.97 5.82 3.49 9.07 4.58 5.39 4.63 3.46 0.71 1.21 41.61 41.35 2015 0.65 1.33 0.46 3.61 4.65 7.11 5.82 7.27 3.85 1.76 3.29 5.93 45.73 40.13 2016 0.73 1.00 2.32 2.22 4.06 3.58 5.60 6.58 6.37 1.32 1.52 1.60 36.90 43.44 2017 2.00 1.27 2.67 3.49 5.15 3.22 2.02 3.67 2.16 5.43 0.36 0.37 31.81 30.09 2018 1.36 1.69 2.89 1.82 4.47 7.78 4.21 7.13 8.96 4.81 1.95 2.41 49.48 46.47 2019 1.24 2.40 1.58 2.64 8.24 4.18 3.00 3.52 5.34 6.27 1.47 1.30 41.18 41.31 2020 1.43 0.48 2.97 1.85 4.69 5.83 1.73 1.57 4.14 2.18 1.99 1.26 30.12 33.73 2021 1.24 0.80 2.51 0.77 3.83 2.81 3.29 4.64 1.33 5.70 1.35 0.86 29.13 26.65 2022 0.93 0.22 3.13 3.75 3.76 4.20 3.42 3.39 1.79 0.93 2.20 1.75 29.47 32.50 2023 2.15 2.26 1.45 2.54 3.05 3.53 2.93 2.96 1.92 3.00 0.24 1.41 27.44 27.67 2024 1.94 0.23 2.65 3.66 9.21 4.55 6.66 2.58 0.92 1.91 3.33 1.54 39.18 37.05 2025 0.21 0.48 3.20 3.92 3.04 6.35 10.89 3.10 2.14 2.08 1.76 1.20 38.37 40.11 2026 1.18 0.71 2.64 6.70 2.71 5.72 6.90 5.30 8.46 3.25 **** **** 43.57 45.36 MEAN 0.99 1.07 2.05 3.19 4.36 4.64 3.85 3.76 3.58 2.42 1.71 1.19 32.80 32.56
Publications Citing IEM Data (View All)
These are the most recent 10 publications that have cited the usage of data from this page. This list is not exhaustive, so please let us know if you have a publication that should be added.
- Durak, T. 2026, Advancing tallgrass prairie restorations through studies of invasion resistance and flower reflectance. Masters Thesis. Iowa State University https://www.proquest.com/docview/3380501736
- Islam, S. 2026, MULTI-SCALE RISK MODELING, DECISION SUPPORT, AND RISK COMMUNICATION FOR DROUGHT AND FLOOD HAZARDS. PhD Thesis. University of Iowa https://www.proquest.com/docview/3380545182
- McCarville, M., C. Marett, et al. 2026, Soybean Cyst Nematode Virulence to PI 88788 Soybean Resistance in Iowa: Selection Marches Steadily On. Plant Health Progress. https://doi.org/10.1094/PHP-04-26-0096-RS
- Marcos, F., C. dos Santos, et la. 2026, Seeding rate effects on soybean seed yield components and economic return. Crop Ecology and Physiology. https://doi.org/10.1002/agj2.70534
- Tsai, O., S. Hall, et al. 2026, Quantifying soybean biological nitrogen fixation using long-term isotope enrichment. Plant Soil. https://doi.org/10.1007/s11104-026-08810-2
- Roth, J. 2026, Water, sediment, and nutrient transport from a drained topographical depression within an agricultural field in North-Central Iowa. Masters Thesis. University of Minnesota https://hdl.handle.net/11299/102695
- Back, M. 2026, NUTRIENT CYCLING AT THE SEDIMENT-WATER INTERFACE OF RESTORED AND MANAGED FRESHWATER WETLANDS. PhD Thesis. Kent State. https://etd.ohiolink.edu/acprod/odb_etd/ws/send_file/send?accession=kent1783360102057182&disposition=inline
- McDaniel, M., C. Dutter, et al. 2026, A minimally destructive method for 2-dimensional soil and root mapping in row crops. Plant and Soil. https://doi.org/10.1007/s11104-026-08632-2
- Zhen, X. and W. Sadok. 2026, Increasing transpiration sensitivity to rising vapor pressure deficit raises U.S. spring wheat yields under current and future climates: a two-model simulation study. in silico Plants, diag013 https://doi.org/10.1093/insilicoplants/diag013
- St Cyr, M. 2026, Perennial ground covers: A mitigation strategy to nitrous oxide (N₂O) emissions for maize cropping systems. Masters Thesis. Iowa State University https://www.regenpgc.org/wp-content/uploads/2026/05/2026-05-19-StCyr-OFFICIAL-THESIS.pdf