Northwestern Indiana

Included Counties: 
Lake, Porter, La Porte, Newton, Jasper, Starke, Pulaski, Benton, White
Watersheds: 
Chicago, Iroquois, Kankakee, Lake Michigan, Little Calumet-Galien, Middle Wabash-Deer, Middle Wabash-Little Vermilion, Tippecanoe, Vermilion

Geography

Indiana Climate Division 1 is bounded to the north by the southern tip of Lake Michigan. It includes the urbanized area stretching from Gary to Michigan City, and extends south to include the towns of Monticello and Fowler. Outside of larger municipalities, the terrain is almost entirely dedicated to agriculture.

Overview

The northern areas of Indiana’s Northwestern Climate Division feel a strong lake effect from Lake Michigan, while the southern areas are much more continental. Lake Michigan moderates temperatures year-round in the north, and can generate intense lake-effect snowfall. Farther inland and overall, large daily variations in temperature are more common than in climatic divisions nearer the Great Lakes. But as with the surrounding region, the division does not usually experience prolonged periods of extreme heat and humidity in the summer or prolonged, extreme cold during the winter. Summers are generally quite warm, and winters, while not as severe as in more northern locations, can be cold with moderate to heavy snowfall.
 

Changes In Precipitation

 in.cm.%
Annual2.87.27.68
Winter0.51.28.26
Spring-0.0-0.0-0.09
Summer0.71.95.99
Fall1.43.616.89

Linear best-fit changes are calculated over the period 1950-2012. Percentage changes are calculated relative to the 1951-1980 historical reference period.

↑ Back to precipitation index

Changes In Temperature

 °F°C
Annual1.91.1
Winter1.91.0
Spring3.21.8
Summer0.90.5
Fall1.20.6

Linear best-fit changes are calculated over the period 1950-2012. Percentage changes are calculated relative to the 1951-1980 historical reference period.

Seasonal Precipitation

Seasonal Temperature