Water and Atmospheric Resources Monitoring Program (WARM)
The Illinois State Water Survey (ISWS) WARM collects weather data from Illinois Climate Network (ICN) weather stations, and hydrological data (shallow groundwater wells, in-stream sediment, reservoir heights and U.S. Geological Survey (USGS) stream gages (http://www.isws.illinois.edu/warm/about.asp). The ICN network consists of 19 stations where hourly data have been collected since 1989: air temperature, relative humidity, wind direction and speed, solar radiation, precipitation, soil temperature (4 & 8, inches under bare soil and sod at 19 stations); soil moisture (2, 4, 8, 20, 39 & 59 inches); estimates of dew point temperature and potential evapotranspiration computed. http://www.isws.illinois.edu/warm/datatype.asp
Cook County precipitation Network (CCPN)
This network has collected hourly precipitation data year-round at 25 sites in Cook County since 1989, and 10-minute data since 2001. http://www.isws.illinois.edu/data/ccprecipnet/livedata.asp
Bondville Environmental and Atmospheric Research Site (BEARS)
The BEARS site, located in rural east-central Illinois, hosts atmospheric measurement equipment from 11 projects funded variously by NOAA-Environmental Research Lab, NOAA-Atmospheric Research Lab, USDA, NASA, U.S. EPA, Illinois EPA, ISWS, the University of Colorado and the University of California at Davis. These networks include: the National Atmospheric Deposition Program, Surface Radiation Budget Network (SURFRAD), UV-B Monitoring and Research Program, the Atmospheric Integrated Research Monitoring Network (AIRMoN-Dry), the Aerosol Robot Network, the Clean Air Status and Trends Network (CASTNET), the Interagency Monitoring of Protected Visual Environments (IMPROVE), and the Water and Atmospheric Resources Monitoring Program (WARM). http://www.isws.illinois.edu/atmos/bears/projects.asp
Purdue Automated Agricultural Weather Stations (PAAWS)
The Purdue network originally operated from 1974-1985 as MICRO, and was relaunched as PAAWS in 1999. 30-minute, hourly and daily data are available from seven PAAWS Network sites for air temperature, wind speed, direction, gusts, precipitation, solar radiation, soil temperature at 4 inches under sod and under bare soil, vapor pressure and saturation vapor pressure, and measured reference evapotranspiration. Data archived since 1999 are available online. https://climate.agry.purdue.edu/climate/index.asp
Iowa Environmental Mesonet (IEM)
Hourly data from many weather networks have been collected under the umbrella of the IEM (http://mesonet.agron.iastate.edu/sites/locate.php), including ASOS/AWOS Networks, the Roadway Weather Information System (RWIS), precipitation data from the Data Collection Platforms (DCPs) and the Community Collaborative Rain, Hail and Snow (CoCoRaHS) networks. Data from two other networks also are accessed through this site, the Iowa State University Ag Climate Data (ISU-Ag) and the Soil Climate Atlas Network (SCAN). The ISU-Ag collects air temperature, relative humidity, wind direction and speed, precipitation, solar radiation, soil temperature (4 inches), and estimated potential evapotranspiration at 11 stations, some starting in 1988. http://mesonet.agron.iastate.edu/agclimate/info.phtml
These data are included in the Automated Weather Data Network archived at the High Plains Regional Climate Center: http://www.hprcc.unl.edu/awdn/
SCAN, operated by the National Water and Climate Center, measures air temperature, relative humidity, wind direction and speed, precipitation, solar radiation, soil temperature (2, 4, 8, 20, 40 inches), soil moisture (2, 4, 8, 20, 40 inches) and estimates potential evapotranspiration at 5 stations beginning in 2000. In addition, barometric pressure and dew point temperature are available from the SCAN sites. http://mesonet.agron.iastate.edu/scan/
Since 2007, the Kentucky Mesonet has collected air temperature, relative humidity, wind direction and speed, solar radiation and precipitation at 64 sites and derived dew point temperature; soil moisture (2, 4, 8, 20, 40 inches) and soil temperature at 5 sites. http://www.kymesonet.org/
Enviro-Weather Automated Weather Station Network
The Michigan Enviro-Weather Automated Weather Station Network has operated since 1972 and serves the state's agriculture and natural resource industries. Following a recent collaborative agreement with the University of Wisconsin, the network has expanded into neighboring sections of Wisconsin. Temperature (5 ft), relative humidity (5 ft), wind direction and speed (10 ft), precipitation, solar radiation, soil temperature (2, 4 inches), soil moisture (4, 10 inches), leaf wetness (39 inches), and estimated potential evapotranspiration at 75 sites. Data are collected every 60 minutes during the growing season (April-October) and every 3 hours during the off season and made available at daily, hourly, and 5-minute reporting intervals. http://www.agweather.geo.msu.edu/mawn/
Regularly updated climate information are available from a variety of sources (http://climate.umn.edu/doc/agwx.htm). Ten North Dakota Automated Weather Network (NDAWN) stations are located in Minnesota (http://ndawn.ndsu.nodak.edu and http://www.hprcc.unl.edu/awdn.php). These include soil temperature, solar radiation, computed evapotranspiration, as well as standard meteorological variables. Minnesota's Department of Agriculture has wired soil temperature probes at the 6 inch level to ten stream gauging DCP/HADS stations (http://gis.mda.state.mn.us/maps/csgsoil.htm).
Southern Research and Outreach Center (SROC): measures hourly air temperature, relative humidity, wind direction and speed, solar radiation, precipitation, and evaporation, as well as soil temperature (2, 4, 8, 20 and 40 inches): http://climate.umn.edu/doc/waseca.htm
and soil moisture at Waseca MN (2000-2011): http://climate.umn.edu/img/soil_moisture/wassm2011.gif.
Southwest Research and Outreach Center (SWROC): measures air temperature, precipitation, soil temperature (2, 4, and 8 inches)
and soil moisture at Lamberton MN:
Northwest Research and Outreach Center (NWROC): measures hourly air temperature, relative humidity, wind speed and direction, soil temperature (2, 4, 8, 20 inches) and estimated dew point temperature at the North and West Farms.
Minnesota Volunteer Precipitation Observing Program (MNgage): this high spatial-density precipitation volunteer observing program began in the late 1960s in the Twin Cities and gradually expanded across Minnesota in the 1970s. The network is based at the Minnesota State Climatology Office, with the number of warm-season observers remaining steady at 1,400 for the past twenty years. Daily precipitation measurements are reported both online and by use of hard copy forms. http://climate.umn.edu/doc/journal/puddles.htm
The Missouri Mesonet was established in 1993 and has grown to 31 stations today. Real-time weather conditions are available from 21 of these stations every 5 minutes. Air temperature, relative humidity, wind direction and speed, solar radiation, rainfall, soil temperature (2 and 4 inches), are measured at 29 sites. Hourly and daily climatological data are available on the web from 2000 to present for these 31 stations. http://agebb.missouri.edu/weather/history/index.asp
North Dakota Agricultural Weather Network (NDAWN)
The NDAWN was established in 1989 with the deployment of 6 stations and has expanded to 72 stations today across North Dakota, the Red River Valley, and in the border regions of surrounding states. Each station provides hourly averages of air temperature, relative humidity, dew point temperature, soil temperature at 4 inches (under bare soil and turf), wind speed and direction, and solar radiation, hourly rainfall totals, daily PET, and hourly maximum wind speed. Twelve stations provide real-time data, every 10 minutes. http://ndawn.ndsu.nodak.edu/
These data are included in the Automated Weather Data Network archived at the High Plains Regional Climate Center: http://www.hprcc.unl.edu/awdn.php
Ohio Agricultural Research and Development Center (OARDC) Weather System
The OARDC Weather System has collected daily since 1989 and hourly since 2001. air temperature, relative humidity, wind direction and speed, solar radiation, precipitation, soil temperature (at 2, 4 inches), and leaf wetness at 17 sites.
The Oklahoma mesonet was established in 1992, and today consists of 110 automated environmental monitoring stations. At each site, 5-minute data are recorded for air temperature, dew point temperature, relative humidity, wind direction and speed, maximum wind speed, air pressure, maximum and minimum air temperature, wind chill, heat index and precipitation, daily solar radiation, soil temperature (2, 4, 12 inches) under bare soil and native vegetation, and soil moisture (2, 10, 25, 30 inches).
University of Wisconsin Agricultural Extension (UWAE)
The University of Wisconsin Agricultual Extension operates two currently active station in Wisconsin. At each site, these stations record temperature, humidity, dew point, wind insolation, reference evapotranspiration, percent cloud cover. In addition, the UWAE sites also gather daily soil temperature at 2, 4, 20 and 40 inches; and five-minute rainfall data.