National Weather Service United States Department of Commerce

Heavy Rain in the Ohio and Tennessee Valleys; Watching for Tropical Cyclone Development in the Atlantic

Heavy to excessive rainfall may bring areas of flash and urban flooding over portions of the Ohio and Tennessee Valleys. Two tropical waves in the Atlantic are being monitored for tropical cyclone formation within the next few days. One tropical wave will bring periods of heavy rain, thunderstorms, flood risk, and landslides to Puerto Rico and the US Virgin Islands through Friday morning. Read More >

Climate/Almanac Data     -      Sep Normals     -     Sep Records
 
SEPTEMBER
 

 Site (Click site name for report)

Avg
Temp
Norm Dept
From
Norm
Precip
Total
Norm Dept
From
Norm
  Burlington 66.9° 67.4° -0.5° 4.14" 3.52" +0.62"
  Cedar Rapids 61.3° 62.8° -1.5° 5.58" 3.16" +2.42"
  Davenport 63.3° 63.3°  0.0° 8.72" 3.06" +5.66"
  Dubuque 60.3° 62.0° -1.7° 8.24" 3.46" +4.78"
  Iowa City 62.8° 64.2° -1.4° 6.30" 3.39" +2.91"
  Moline 64.6° 65.4° -0.8° 6.52" 3.09" +3.43"
The ranking is listed in parentheses (__) when within the "Top 10".
 
September 2020 was about normal to 2 degrees below normal.
Precipitation totals were mainly about 2.5 to 5.5 inches above normal, except at Burlington where it was 0.62" above normal.
Please see Sep 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
NA NA NA NA
 
 
 
A LOOK AHEAD
 
Climate Prediction Center
 
October
Temperature Outlook
October
Precipitation Outlook
October - December
Temperature Outlook
October - December
Precipitation Outlook
NA NA NA NA