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 - May Normals - May Records

May

Site (Click site name for report)	Avg Temp	Normal	Dept From Norm	Precip Total	Normal	Dept From Norm
Burlington	60.2°	63.0°	-2.8°	5.77"	4.93"	+0.84"
Cedar Rapids	58.2°	60.3°	-2.1°	2.70"	4.25"	-1.55"
Davenport	60.2°	61.7°	-1.5°	4.07"	4.82"	-0.75"
Dubuque	58.1°	58.8°	-0.7°	2.72"	4.30"	-1.58"
Iowa City	60.7°	62.6°	-1.9°	4.33"	4.48"	-0.15"
Moline	60.6°	62.5°	-1.9°	6.59"	4.67"	+1.92"

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

May 2021 was about 1 to 3 degrees below normal.

Precipitation totals for May 2021 were about 2 inches above normal to 1.6 inches below normal.

Please see May Records for monthly record information.

The climate maps below are courtesy of the Midwest Regional Climate Center.

These maps become available around 10am on the first of the month.

Average Temperature	Average Temperature Departure from Mean	Accumulated Precipitation	Accumulated Precipitation Percent of Mean

Climate/Almanac Data - Spring Normals - Spring Records

Spring
(Mar-May)

Site (Click site name for report courtesy of the Iowa Environmental Mesonet.)	Avg Temp	Normal	Dept From Norm	Precip Total	Normal	Dept From Norm	Snowfall Total	Normal	Dept From Norm
Burlington	52.7°	52.0°	+0.7°	13.26"	11.28"	+1.98"	NA	2.0"	NA
Cedar Rapids	49.6°	48.6°	+1.0°	5.88"	9.80"	-3.92"	NA	4.1"	NA
Davenport	51.6°	50.2°	+1.4°	9.40"	10.77"	-1.37"	1.8"	NA	NA
Dubuque	49.1°	47.2°	+1.9°	6.51"	10.61"	-4.1"	3.8"	8.3"	-4.5"
Iowa City	52.0°	51.1°	+0.9°	9.33"	10.45"	-1.12"	NA	NA	NA
Moline	52.4°	51.2°	+1.2°	12.94"	11.10"	+1.84"	1.8"	4.9"	-3.1"

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

Spring 2021 temperatures were about 0.5 degrees 2 degrees above normal.

Precipitation totals for Spring 2021 were about 2 inches above normal to about normal to 4 inches below normal.

Snowfall totals for Spring 2021 were around below normal for Moline and Dubuque.

Please see Spring Records for seasonal record information.

The climate maps below are courtesy of the Midwest Regional Climate Center.

These maps become available around 10am on the first of the month.

Average Temperature	Average Temperature Departure from Mean	Accumulated Precipitation	Accumulated Precipitation Percent of Mean	Accumulated Snowfall	Accumulated Snowfall Percent of Mean