Iowa Environmental Mesonet
Iowa State University Department of Agronomy
The GIS page has everything GIS on the IEM
IEM "Climodat" Reports
These "Climodat" reports provide some answers to the most common climatological questions we get routinely asked. These reports are based on the daily climate observations from the NWS COOP network. We also provide "kitchen sink" data files which contain the much of the raw information used to generate the reports.
Note on data sources:
The Iowa State Climatologist provides the IEM with a monthly update of
quality controlled observational data. This procedure takes a good deal of
time on his behalf. Quality controlled information exists from 1 Jan 1951 till 01 Oct 2009. Any months of data
afterwards are based on preliminary data from NCDC and other sources. Some sites have data back to 1893, so their reports
contain data dating back to then.
Climodat Reports
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# IEM Climodat http://mesonet.agron.iastate.edu/climodat/ # Report Generated: 09 Feb 2010 # Climate Record: 01 Jan 1893 -> 08 Feb 2010 (data after 01 Oct 2009 is preliminary) # Site Information: [IA2364] DUBUQUE-LOCK-AND-DAM # Contact Information: Daryl Herzmann akrherz@iastate.edu 515.294.5978 # Monthly Average Temperatures [F] (High + low)/2 YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN 1893 9 16 34 46 58 72 76 71 65 53 35 22 46 1894 21 20 42 52 62 74 77 74 66 51 33 30 50 1895 14 16 35 54 62 73 74 74 69 46 36 27 48 1896 24 27 32 55 68 72 74 72 60 49 33 30 50 1897 18 25 32 48 59 68 76 68 70 58 35 20 48 1898 24 24 38 48 60 71 74 72 66 49 34 19 48 1899 20 14 26 50 60 70 74 74 62 56 44 24 48 1900 26 16 28 52 63 70 73 78 66 60 35 28 49 1901 24 14 33 50 60 72 82 74 63 54 36 22 49 1902 23 18 39 49 64 65 74 68 60 54 44 22 48 1903 22 22 40 50 63 64 72 68 62 52 34 18 48 1904 14 14 34 44 60 68 72 69 64 52 41 24 46 1905 12 14 39 48 59 70 72 74 67 50 38 28 48 1906 25 22 27 52 60 68 72 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