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Title:Local Climatological Data Summary: Harrisburg, Illinois, 1901-1990
Author(s):Bryan, Audrey A.; Armstrong, Wayne
Subject(s):Harrisburg, Illinois
Saline County, Illinois
temperate continental climate
Abstract:Harrisburg (Saline County) has a temperate continental climate, dominated by maritime tropical air from the Gulf of Mexico from about March through November. Gulf air generally supports relative humidities of about 60% during the day and 85% at night. During these months, there are occasional, brief interruptions of drier, cooler air from the Pacific Ocean, but typically only last for a few days. From November through March, the Harrisburg area is dominated by Pacific Ocean air. Three or four times each winter, cold, dry air from the Canadian Arctic breaks south, bringing temperatures into the teens and even units. Average annual precipitation is about 45 inches, the highest for the state. The highest temperature on record is 113°F recorded on 13 July 1936, whereas the lowest is -23°F on 2 February 1951.
Issue Date:1991
Publisher:Illinois State Water Survey
Series/Report:ISWS Miscellaneous Publication MP-98-4
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Rights Information:Copyright ... University of Illinois Board of Trustees. All rights reserved. This document is a product of the Illinois State Water Survey, and has been selected and made available by the Illinois State Water Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended for research and educational use, and proper attribution is requested.
Date Available in IDEALS:2014-10-29

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