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The summaries cover assessment topics directly related to NOAA’s mission, specifically historical climate variations and trends, future climate model projections of climate conditions during the 21st century, and past and future conditions of sea level and coastal flooding.
The Climate Atlas of Illinois focuses on climate conditions over the past 100+ years of high-quality, extensive climate data collection by the National Weather Service and by the Illinois State Water Survey through numerous extensive, unique field measurements since 1947.
Here are extensive climate statistics for individual sites in Illinois, including monthly normals and extremes. Stations were chosen based on length of record and completeness of data. Normal monthly temperature and precipitation data for all sites can be downloaded (Excel) .
Here are extensive climate statistics for individual sites in Illinois, including monthly normals and extremes. Stations are chosen based on length of record and completeness of data.
18 sie 2021 · NOAA NCEI, n.d.: Climate at a Glance: Statewide Time Series, Illinois. National Oceanic and Atmospheric Administration, National Centers for Environmental Information, Asheville, NC, accessed April 16, 2021.
north to south. In northeastern Illinois, Lake Michigan moderates the temperature, causing cooler summers and warmer winters. Topography and urbanization also have local impacts on climate. Temperatures in Illinois have risen about 1.5°F since the beginning of the 20th century (Figure 1). Temperatures
The Illinois State Climatologist provides maps of current climate conditions in Illinois including precipitation, mean temperature, maximum temperature, minimum temperature, and snowfall for selected time periods. These are typically updated around 11 am each day.
