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: 30 Jun 2025 # Climate Record: 1897-08-01 -> 2025-06-30, WYEAR column is Water Year Oct 1 - Sep 30 # Site Information: [IA4585] Lamoni # 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 1897 **** **** **** **** **** **** **** 2.72 0.65 0.69 0.51 1.29 5.86 3.37 1898 2.88 0.92 2.37 1.95 6.15 4.62 2.53 0.63 5.62 4.21 1.54 1.38 34.80 30.16 1899 0.57 0.71 2.89 2.60 7.43 2.93 5.03 3.87 0.73 1.66 0.63 2.07 31.12 33.89 1900 0.23 2.42 1.79 2.99 4.02 1.79 4.76 3.24 3.85 5.66 1.65 0.48 32.88 29.45 1901 0.57 1.40 2.91 2.47 2.32 4.15 2.93 1.11 3.92 1.79 1.19 1.82 26.58 29.57 1902 1.27 0.71 1.02 2.03 6.88 9.17 7.50 8.45 7.14 3.20 2.79 2.20 52.36 48.97 1903 0.24 1.25 1.58 2.38 9.08 3.13 3.17 6.47 5.90 1.36 0.90 0.70 36.16 41.39 1904 2.83 0.28 3.48 4.31 5.71 2.57 4.32 6.97 2.89 0.73 0.24 1.86 36.19 36.32 1905 0.88 1.99 3.23 4.70 5.10 4.73 3.73 4.84 6.45 2.95 2.84 0.34 41.78 38.48 1906 1.50 1.86 2.05 3.40 1.98 4.09 2.54 2.91 3.09 0.79 2.22 1.23 27.66 29.55 1907 2.83 1.14 2.08 1.91 3.39 6.41 6.68 2.86 2.43 2.22 1.32 1.04 34.31 33.97 1908 0.10 2.20 1.07 1.55 9.71 5.74 4.08 4.72 0.84 8.83 2.30 0.23 41.37 34.59 1909 1.96 1.01 1.59 4.36 4.72 8.11 11.78 0.37 5.75 3.63 3.66 2.60 49.54 51.01 1910 1.20 0.29 0.03 2.15 6.91 2.63 3.49 1.45 4.77 0.27 0.31 0.18 23.68 32.81 1911 0.91 3.68 1.19 4.36 1.60 0.77 2.04 3.02 4.33 5.57 0.98 3.04 31.49 22.66 1912 0.10 2.32 1.54 2.54 3.59 2.44 2.13 5.94 3.25 3.35 0.43 0.42 28.05 33.44 1913 0.54 1.19 0.83 3.21 3.20 3.63 1.32 2.19 2.92 4.52 2.33 3.39 29.27 23.23 1914 0.70 0.67 2.04 2.84 1.18 4.53 2.12 2.02 11.47 2.64 0.00 1.04 31.25 37.81 1915 2.25 2.11 1.22 1.80 9.99 6.71 10.43 1.99 4.39 0.37 1.30 0.18 42.74 44.57 1916 2.86 0.14 1.09 3.00 8.65 6.07 2.69 4.61 2.11 1.84 2.59 0.68 36.33 33.07 1917 0.48 0.00 1.73 6.11 4.56 9.08 0.88 3.08 1.78 0.90 0.02 0.29 28.91 32.81 1918 1.15 1.50 0.17 3.90 5.74 4.79 2.11 2.91 1.99 3.59 2.18 1.26 31.29 25.47 1919 0.07 2.69 4.14 4.87 4.68 9.11 4.98 1.93 5.21 3.06 3.56 0.28 44.58 44.71 1920 0.21 0.16 5.27 4.45 1.69 4.02 3.67 3.97 5.72 1.10 0.73 0.58 31.57 36.06 1921 1.08 0.41 1.33 3.54 3.13 5.12 3.19 4.57 5.85 2.70 0.18 0.22 31.32 30.63 1922 1.29 1.29 3.57 1.70 6.29 2.93 10.78 4.90 2.72 3.56 4.91 0.21 44.15 38.57 1923 0.47 0.28 2.70 1.88 1.19 3.78 2.28 5.85 4.56 1.64 0.67 0.46 25.76 31.67 1924 0.52 2.75 2.15 1.41 1.64 8.44 3.48 2.62 3.86 1.03 0.56 1.92 30.38 29.64 1925 0.32 1.16 1.73 4.04 1.24 5.69 1.41 5.23 6.85 3.34 0.57 0.92 32.50 31.18 1926 0.85 1.17 1.25 0.63 3.99 7.46 2.36 5.29 14.64 3.91 1.03 0.47 43.05 42.47 1927 0.23 1.87 2.90 7.16 1.23 4.91 2.43 1.72 2.47 4.54 0.79 1.28 31.53 30.33 1928 0.02 2.05 1.31 1.66 1.77 8.59 7.93 2.24 5.61 4.43 5.92 0.60 42.13 37.79 1929 2.30 1.38 1.34 4.40 1.34 5.60 7.33 1.23 2.97 4.88 0.96 0.08 33.81 38.84 1930 1.07 1.78 1.49 1.94 3.66 3.91 0.47 3.72 1.39 2.16 1.70 0.68 23.97 25.35 1931 0.29 0.53 1.31 2.29 2.03 2.96 3.83 3.18 8.38 3.67 6.32 3.28 38.07 29.34 1932 1.14 0.73 0.76 5.13 3.55 3.41 2.07 15.92 2.01 1.72 1.46 1.32 39.22 47.99 1933 0.48 0.07 1.36 0.83 2.05 1.35 3.40 5.23 6.17 0.85 0.52 0.53 22.84 25.44 1934 0.47 0.44 0.24 1.39 3.42 5.25 0.60 1.89 4.05 2.45 7.96 0.21 28.37 19.65 1935 0.64 0.93 0.67 2.33 8.61 7.68 1.81 0.94 4.97 2.24 2.90 0.55 34.27 39.20 1936 2.34 0.59 0.36 1.11 3.95 2.38 0.72 1.56 8.02 1.84 0.15 1.78 24.80 26.72 1937 3.08 0.81 0.73 3.81 3.51 2.71 6.10 2.04 0.71 1.37 1.24 0.58 26.69 27.27 1938 0.93 0.51 1.98 2.75 3.85 2.29 3.78 9.48 1.76 0.29 2.21 0.64 30.47 30.52 1939 0.60 2.53 3.56 3.62 1.20 11.10 3.64 5.82 0.40 0.56 1.26 0.99 35.28 35.61 1940 1.27 0.80 1.60 3.62 3.54 4.75 3.93 7.44 0.41 1.61 1.47 1.29 31.73 30.17 1941 2.80 0.57 0.63 1.77 2.13 4.38 2.31 0.74 10.30 7.30 1.03 2.58 36.54 30.00 1942 0.45 1.94 1.53 2.45 3.27 14.03 1.84 4.28 3.44 2.84 3.12 2.01 41.20 44.14 1943 0.34 0.82 1.39 1.85 6.64 6.82 1.84 5.89 4.35 0.84 0.62 1.14 32.54 37.91 1944 0.93 0.73 2.91 5.40 5.68 4.21 3.99 7.50 2.98 1.52 2.42 2.58 40.85 36.93 1945 0.62 1.08 2.70 5.18 7.60 5.91 2.38 1.33 7.05 0.51 1.37 2.48 38.21 40.37 1946 2.84 0.22 4.25 1.38 4.63 5.83 2.75 4.17 3.11 1.80 1.55 0.52 33.05 33.54 1947 1.37 0.29 3.11 6.48 3.43 12.33 0.16 1.84 2.08 6.51 2.20 2.27 42.07 34.96 1948 1.48 1.25 2.09 3.61 2.41 4.24 1.65 3.42 1.79 1.65 1.18 1.14 25.91 32.92 1949 3.80 1.40 3.26 1.26 2.18 6.15 2.79 4.38 7.82 3.42 1.13 1.95 39.54 37.01 1950 1.50 1.87 0.59 1.31 5.25 4.86 4.55 4.95 2.00 0.61 0.54 0.33 28.36 33.38 1951 0.60 2.17 3.38 6.25 4.72 5.47 3.46 5.75 2.83 3.56 1.98 0.92 41.09 36.11 1952 0.68 0.83 3.26 2.08 3.53 5.20 2.09 5.10 1.29 0.00 2.84 0.66 27.56 30.52 1953 0.32 2.59 4.65 1.92 1.45 4.47 2.08 1.70 0.98 1.43 0.88 1.39 23.86 23.66 1954 0.06 1.16 1.37 6.83 6.99 2.18 0.99 6.23 1.36 6.50 0.11 0.74 34.52 30.87 1955 1.49 2.15 0.86 3.35 3.56 3.89 2.88 1.05 2.98 1.69 0.12 0.20 24.22 29.56 1956 0.16 0.60 0.31 0.73 2.40 2.04 11.35 5.44 0.26 0.64 1.97 0.35 26.25 25.30 1957 0.88 0.21 3.00 4.19 2.51 6.23 5.55 3.71 3.66 3.65 1.04 1.08 35.71 32.90 1958 0.47 0.87 0.53 1.56 4.19 1.79 12.16 2.17 4.67 2.03 2.68 0.10 33.22 34.18 1959 0.85 0.76 3.82 4.50 8.48 4.05 1.90 6.10 9.13 3.04 0.20 2.92 45.75 44.40 1960 2.47 1.31 2.06 2.41 4.28 11.00 1.22 6.70 4.33 2.92 0.85 0.74 40.29 41.94 1961 0.26 1.78 3.91 2.60 2.52 3.86 5.74 2.17 10.11 3.07 4.21 1.02 41.25 37.46 1962 1.09 1.93 1.22 1.75 5.52 2.63 4.44 3.39 2.05 4.71 1.50 0.85 31.08 32.32 1963 1.21 0.42 4.47 1.84 3.82 1.38 3.70 4.63 2.27 1.49 1.37 0.73 27.33 30.80 1964 0.32 0.64 2.12 3.98 1.92 6.67 3.80 5.84 7.75 0.17 2.06 1.06 36.33 36.63 1965 0.00 1.21 4.06 4.25 4.50 3.46 3.41 2.97 8.05 0.68 0.75 2.30 35.64 35.20 1966 0.87 0.43 0.66 1.89 2.94 6.79 4.67 2.67 1.62 1.13 0.20 0.94 24.81 26.27 1967 1.23 0.73 2.22 4.29 6.05 7.44 2.48 0.70 1.35 6.02 0.52 0.86 33.89 28.76 1968 0.47 0.18 0.47 6.05 1.81 2.31 6.76 2.83 1.22 2.22 1.79 1.77 27.88 29.50 1969 1.51 0.39 1.42 5.04 0.00 6.52 5.34 3.52 0.00 4.26 0.05 0.74 28.79 29.52 1970 0.16 0.24 1.16 5.04 4.52 4.06 2.36 8.72 8.97 3.39 1.12 1.24 40.98 40.28 1971 1.26 1.82 0.74 1.82 2.52 2.36 1.42 0.95 4.47 4.40 4.00 1.74 27.50 23.11 1972 0.62 0.46 1.20 4.33 5.96 2.27 6.93 4.61 5.47 1.04 3.79 1.62 38.30 41.99 1973 2.61 1.74 7.13 5.17 5.95 3.56 10.12 3.74 7.15 4.26 0.00 2.37 53.80 53.62 1974 1.34 0.69 1.40 4.73 5.67 3.86 1.28 3.25 1.54 4.10 1.40 1.17 30.43 30.39 1975 0.00 1.41 1.93 1.48 2.32 3.27 0.95 4.47 4.85 0.03 5.99 1.16 27.86 27.35 1976 0.51 2.41 4.27 7.92 3.63 1.58 5.13 4.48 2.48 1.70 0.11 0.30 34.52 39.59 1977 1.07 0.19 3.18 3.43 3.55 1.69 0.68 9.94 5.36 6.47 0.00 1.03 36.59 31.20 1978 0.43 0.00 0.75 5.62 6.25 3.56 5.37 3.11 9.51 0.82 3.57 0.00 38.99 42.10 1979 1.73 0.42 3.84 3.57 1.98 5.82 4.28 1.34 1.62 3.68 1.90 0.46 30.64 28.99 1980 1.58 1.42 2.35 1.88 2.03 6.25 2.44 12.79 2.52 3.22 0.65 2.77 39.90 39.30 1981 0.37 0.85 1.82 4.14 4.04 4.05 7.16 3.68 2.62 3.03 4.65 0.00 36.41 35.37 1982 1.79 0.89 5.03 2.38 0.00 3.92 4.29 7.00 4.07 3.37 2.78 4.10 39.62 37.05 1983 1.17 0.90 3.16 3.27 4.68 3.28 0.34 0.89 3.17 4.92 5.30 1.12 32.20 31.11 1984 0.29 1.41 2.75 7.92 6.11 5.55 2.94 2.20 2.04 5.11 0.94 2.31 39.57 42.55 1985 0.47 1.21 2.68 1.54 1.96 4.71 0.00 4.73 6.75 4.84 3.85 0.64 33.38 32.41 1986 0.00 1.51 2.08 4.74 6.61 3.87 7.37 7.79 10.23 3.90 1.01 1.90 51.01 53.53 1987 0.34 1.85 3.28 2.35 9.49 2.61 8.60 8.69 2.70 2.68 3.84 2.34 48.77 46.72 1988 0.29 0.85 0.54 1.44 1.12 0.60 1.44 3.36 2.91 0.24 2.77 0.72 16.28 21.41 1989 0.99 0.97 0.68 1.01 4.01 2.10 5.45 9.33 5.43 2.82 0.01 0.66 33.46 33.70 1990 1.67 1.36 4.79 4.08 7.44 6.88 7.50 3.77 2.85 4.05 3.03 1.58 49.00 43.83 1991 1.00 0.30 4.52 8.41 5.41 1.55 5.36 2.39 2.16 5.80 2.86 1.91 41.67 39.76 1992 1.60 2.71 3.52 4.08 2.01 3.03 11.36 0.00 9.33 0.62 4.93 0.00 43.19 48.21 1993 1.69 0.97 2.60 3.56 5.39 10.71 19.25 2.71 6.96 2.06 1.58 1.10 58.58 59.39 1994 0.84 1.89 0.21 3.13 3.10 6.05 2.38 4.66 3.17 2.61 3.31 1.94 33.29 30.17 1995 0.72 1.18 1.85 5.02 10.14 5.69 4.66 3.06 3.74 2.02 1.56 0.87 40.51 43.92 1996 2.50 0.49 1.15 1.69 12.94 0.00 2.53 5.00 3.27 4.37 2.68 0.11 36.73 34.02 1997 0.69 4.03 1.30 6.25 4.48 2.55 2.61 3.90 3.69 5.16 1.41 1.98 38.05 36.66 1998 0.89 2.10 5.80 4.91 4.02 6.15 2.64 3.18 2.01 7.68 3.89 0.96 44.23 40.25 1999 0.51 2.32 1.97 6.26 5.85 5.54 3.30 3.97 3.49 0.56 1.41 0.47 35.65 45.74 2000 0.38 2.08 0.96 0.93 2.24 7.78 3.78 3.85 2.96 1.66 2.61 2.30 31.53 27.40 2001 2.30 3.10 2.60 4.31 7.70 6.83 6.63 1.40 4.66 5.12 0.85 0.76 46.26 46.10 2002 1.09 0.33 1.80 3.54 6.49 1.55 3.44 4.02 0.34 2.75 0.15 0.04 25.54 29.33 2003 0.43 1.10 1.23 4.24 5.10 3.77 2.93 0.55 4.39 1.26 4.56 1.54 31.10 26.68 2004 1.05 1.10 3.78 1.50 6.96 5.27 3.10 9.91 1.27 1.15 1.60 0.55 37.24 41.30 2005 1.74 2.08 1.02 3.23 2.91 5.56 3.86 5.13 1.85 1.45 0.97 1.48 31.28 30.68 2006 0.87 0.15 2.94 4.47 2.97 4.87 1.87 9.42 2.87 3.21 2.52 1.95 38.11 34.33 2007 0.91 1.68 3.18 3.90 8.98 2.67 2.65 8.61 1.81 4.12 0.21 4.73 43.45 42.07 2008 0.90 2.99 1.26 6.36 5.93 8.87 12.40 1.44 7.13 4.09 2.60 2.24 56.21 56.34 2009 0.25 0.69 6.33 4.96 6.11 7.20 3.17 7.58 0.31 6.07 3.69 2.86 49.22 45.53 2010 0.75 1.36 2.97 5.16 6.74 15.96 5.98 1.74 11.95 1.56 1.85 0.43 56.45 65.23 2011 1.16 1.18 1.66 4.02 8.85 3.94 3.20 6.68 0.87 0.08 3.96 3.27 38.87 35.40 2012 0.28 2.09 3.49 4.42 3.06 2.81 0.94 8.97 0.68 2.65 1.79 1.61 32.79 34.05 2013 1.35 1.89 2.62 7.47 6.29 4.34 3.12 0.36 2.95 4.07 2.36 0.87 37.69 36.44 2014 0.22 1.76 0.95 5.06 3.85 10.92 3.51 10.88 7.26 3.38 0.78 0.87 49.44 51.71 2015 0.10 1.73 0.63 2.86 6.78 5.94 9.95 4.73 2.75 1.44 5.07 4.71 46.69 40.50 2016 0.90 1.26 2.84 3.37 3.98 1.46 5.93 5.78 2.70 1.29 0.80 1.32 31.63 39.44 2017 1.26 0.16 2.48 6.11 4.39 5.06 1.61 2.99 2.48 7.91 0.41 0.33 35.19 29.95 2018 1.48 1.40 2.15 0.80 5.34 5.00 1.78 6.92 8.85 6.86 2.28 2.35 45.21 42.37 2019 2.56 3.17 5.03 2.82 9.78 4.87 4.24 4.06 9.03 2.76 0.89 1.53 50.74 57.05 2020 2.67 0.18 2.62 4.34 4.54 1.96 6.30 0.69 3.86 1.97 3.43 1.42 33.98 32.34 2021 1.91 0.65 3.91 1.60 3.49 4.81 6.53 4.12 1.69 7.71 2.69 0.87 39.98 35.53 2022 1.19 0.46 3.24 4.18 5.29 2.71 2.70 2.38 1.45 1.62 3.99 2.01 31.22 34.87 2023 1.29 2.88 1.15 1.28 3.80 1.88 5.33 6.49 1.84 2.01 0.47 2.61 31.03 33.56 2024 2.32 0.18 2.07 4.31 6.54 4.61 2.53 4.89 4.44 2.32 2.70 1.44 38.35 36.98 2025 1.06 0.54 2.51 2.72 3.16 7.52 **** **** **** **** **** **** 17.51 23.97 MEAN 1.07 1.23 2.24 3.47 4.52 4.87 4.11 4.26 4.07 2.87 1.93 1.29 35.63 35.63
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.
- Tinoco, A., 2025, Microbial-derived residues and their role in carbon stabilization and aggregate formation in southern Wisconsin cropping systems. UW Madison PhD Thesis. https://proquest.com/docview/3202717023
- Patrikar, J. Rethinking the Safety Case for Risk-Aware Social Embodied Intelligence. Carnegie Mellon University PhD Thesis https://www.proquest.com/docview/3207089540
- Potter, L., 2025, Increasing annual r easing annual rainfall as r ainfall as recorded at fiv ded at five weather stations in e weather stations in the Cedar River watershed and adjacent, Eastern Iowa. The Compass: Earth Science Journal of Sigma Gamma Epsilon: Vol. 94: Iss. 2, Article 2 https://doi.org/10.62879/c13461383
- Cheng, Y., T. Stewart, et al. 2025, Exploring the role of accentuated cut edges (ACE) and macerating enzymes in modifying polysaccharide composition and pomace microstructure in Marquette red wine. Food Chemistry https://doi.org/10.1016/j.foodchem.2025.144083
- Wang, X., Y. Xu, et al. 2025, Knowledge-guided machine learning model with soil moisture for corn yield prediction under drought conditions. arXiv:2503.16328v1 [cs.LG] https://arxiv.org/pdf/2503.16328
- Patrikar, J., J. Dantas, et al. 2025, Image, speech, and ADS-B trajectory datasets for terminal airspace operations. Scientific Data. 12, 468. https://doi.org/10.1038/s41597-025-04775-6
- Moore, E., M. De, et al. 2025, Connections between roots and soil health across agriculture management practices. Plant Soil (2025). https://doi.org/10.1007/s11104-025-07367-w
- Islam, S., J. Mount, et al. 2025, Assessment of Drought Impacts on Crop Yields (Corn and Soybeans) Across Iowa During 2000 – 2022. https://doi.org/10.22541/au.173890810.01900586/v1
- Rogovska, N., J. Kovar, et al. 2024, Impact of tillage, cover crop, and in situ bioreactors on nutrient loss from an artificially drained Midwestern Mollisol. Journal of Environmental Quality. https://doi.org/10.1002/jeq2.20668
- Ayanlade, T., S. Jones, et al. 2024, Multi-modal AI for Ultra-Precision Agriculture. https://doi.org/10.1007/978-981-97-7762-4_13