Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. 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	71.2° (1)	63.7°	+7.5°	3.16"	4.85"	-1.69"
Cedar Rapids	68.5° (2)	60.1°	+8.4°	4.55"	4.15"	+0.40"
Davenport	68.7°	60.8°	+7.9°	4.71"	4.25"	+0.46"
Dubuque	66.2° (T6)	58.8°	+7.4°	5.45"	4.19"	+1.26"
Iowa City	69.5°	61.4°	+8.1°	3.77"	4.21"	-0.44"
Moline	69.8° (1)	61.8°	+8.0°	3.51"	4.32"	-0.81"

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

May 2018 was about 7.5 to 8.5 degrees above normal.

Precipitation totals for May 2018 range from around 1.7 inches below normal to around 1.3 inches above 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	51.3°	53.0°	-1.7°	6.65"	11.40"	-4.75"	NA	2.0"	NA
Cedar Rapids	48.5°	48.6°	-0.1°	6.88"	9.30"	-2.42"	NA	4.1"	NA
Davenport	48.9°	49.8°	-1.1°	7.90"	10.28"	-2.38"	11.9"	NA	NA
Dubuque	46.3°	47.4°	-1.1°	8.88"	10.26"	-1.38"	16.2"	8.3"	+7.9"
Iowa City	49.7°	50.3°	-0.6°	7.59"	9.93"	-2.34"	NA	NA	NA
Moline	50.1°	50.8°	-0.7°	7.74"	10.77"	-3.03"	13.6"	4.9"	+8.7"

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

Spring 2018 was about normal to 2 degrees below normal.

Precipitation totals for Spring 2018 were about 1.4 to 4.8 inches below normal.

Snowfall totals for Spring 2018 were around 8 to 9 inches above normal.

Please see Spring Records for seasonal record information.

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

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