Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Climate/Almanac Data - Sep Normals - Sep Records

SEPTEMBER

Site (Click site name for report)	Avg Temp	Norm 1991-2020	Dept From Norm	Precip Total	Norm 1991-2020	Dept From Norm
Burlington	69.1°	66.7°	+2.4°	1.13" (11th driest)	3.53"	-2.30"
Cedar Rapids	67.3°	63.3°	+4.0°	0.94" (8th driest)	3.40"	-2.36"
Davenport	68.4°	64.6°	+3.8°	0.34"	3.47"	-3.03"
Dubuque	66.3°	62.3°	+4.0°	0.76" (10th driest)	3.82"	-2.95"
Iowa City	69.4°	65.8°	+3.6°	1.16"	3.24"	-1.98"
Moline	67.6°	66.1°	+1.5°	0.71" (6th driest)	3.32"	-2.52"

The ranking is listed in parentheses (__) when within the "Top 10".

September 2025 was about 1.5 to 4 degrees above normal.

Precipitation totals were 2 to 3 inches below normal.

Please see Sep Records for monthly record information.


Burlington	Cedar Rapids	Dubuque	Moline

The climate maps below are courtesy of the Northeast Regional Climate Center

These maps should update to the most recent "last month" on the first of the month.


Average Temperature	Temperature Departure from Normal	Precipitation	Precipitation Percent of Normal

A LOOK AHEAD

Climate Prediction Center

October Temperature Outlook	October Precipitation Outlook	October - December Temperature Outlook	October - December Precipitation Outlook

DVN RSS Feed

Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

September 2025 Climate Review