National Weather Service United States Department of Commerce
Climate/Almanac Data   -    August Normals     -     August Records
 
August
 

 Site
 
(Click site name for report)

Avg
Temp
Normal
1991-2020
Dept
From
Norm
Precip
Total
Normal
1991-2020
Dept
From
Norm
  Burlington 73.0° 73.8° -0.8° 1.83" 3.77" -1.94"
  Cedar Rapids 70.6° 70.8° -0.2° 4.92" 4.07" +0.85"
  Davenport 71.8° 71.7° 0.1° 3.55" 3.96" -0.41"
  Dubuque 70.3° 69.8° +0.5° 5.45" 3.95" +1.50"
  Iowa City 72.9° 73.5° -0.6° 1.64" 3.94" -2.30"
  Moline 72.2° 73.4° -1.2° 1.75" 3.97" -2.22"
The ranking is listed in parentheses (__) when within the "Top 10".
 
   August 2025 temperatures were near normal to 1 degree below normal.
   Precipitation totals were about 2 inches below normal to 1.5 inches above normal.
   Please see August Records for monthly record information.
 
Burlington Cedar Rapids Dubuque Moline
NA NA NA NA
 
 
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
 
 
 
 
Climate/Almanac Data   -   Summer Normals     -     Summer Records
 
Summer
(Jun-Aug)
 

 Site
 (Click site name for report courtesy of the
   Iowa Environmental Mesonet.)

Average
Temperature
Normal
1991-2020
Departure
From
Norm
al
Precipitation
Total
Normal
1991-2020
Departure
From
Norm
al
  Burlington 74.7° 73.9° +0.8° 15.05" 12.66" +2.39"
  Cedar Rapids 73.4° 71.1° +2.3° 13.41" 14.04" -0.63"
  Davenport 73.8° 72.2° +1.6° 16.57" 12.76" +3.81"
  Dubuque 72.2° 70.0° +2.2° 17.27" 13.94" +3.33"
  Iowa City 74.9° 73.9° +1.0° 11.63" 13.14" -1.51"
  Moline 74.3° 73.7° +0.6° 13.78" 13.21" +0.57"
The ranking is listed in parentheses (__) when within the "Top 10".
 
   Summer 2025 temperatures were about 1 to 2 degrees above normal.
   Precipitation totals widely varied and ranged from 1.5 inches below normal in Iowa City to 3.8 inches above normal in Davenport.
   Please see Summer Records for seasonal record information.
 
 
The climate maps below are courtesy of the Midwest Regional Climate Center.
The maps below will be updated by late morning 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
 
September
Temperature Outlook
September
Precipitation Outlook
September - November
Temperature Outlook
September - November
Precipitation Outlook
NA NA NA NA
 
 
 
 
 

 

                         
...THE MOLINE IL WEATHER HISTORY REPORT FOR... | ...THE DUBUQUE IA WEATHER HISTORY REPORT FOR...
...COLUMBUS DAY... | ...COLUMBUS DAY...
  |  
CLIMATE NORMAL PERIOD 1991 TO 2020 | CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2024 | CLIMATE RECORD PERIOD 1874 TO 2024
            |            
Temperature Value Date

% of Record

    | Temperature Value Date

% of Record

   
Normal High 69-66         | Normal High 64-61        
Normal Low 46-43         | Normal Low 43-41        
Warmest 90 10/13/1975       | Warmest 85 10/13/1975      
Coldest 26 10/09/2000       | Coldest 25 10/09/2000      
Coldest High 42 10/10/1932       | Coldest High 42 10/13/1986      
Warmest Low 68 10/13/1975       | Warmest Low 65 10/14/1968      
Average Max 67.2         | Average Max 64.3        
Average Min 45.2         | Average Min 43.6        
Mean 56.2         | Mean 53.9        
            |            
Days Max 90 - 99 1   0.7%     | Days Max 90 - 99 0   0.0%    
Days Max 80 - 89 18   11.9%     | Days Max 80 - 89 18   6.0%    
Days Max 70 - 79 44   29.1%     | Days Max 70 - 79 80   26.5%    
Days Max 60 - 69 54   35.8%     | Days Max 60 - 69 110   36.4%    
Days Max 50 - 59 26   17.2%     | Days Max 50 - 59 68   22.5%    
Days Max 40 - 49 8   5.3%     | Days Max 40 - 49 26   8.6%    
Days Max 30 - 39 0   0.0%     | Days Max 30 - 39 0   0.0%    
            |            
Days Min 70 - 79 0   0.0%     | Days Min 70 - 79 0   0.0%    
Days Min 60 - 69 11   7.3%     | Days Min 60 - 69 14   4.6%    
Days Min 50 - 59 35   23.2%     | Days Min 50 - 59 64   21.2%    
Days Min 40 - 49 65   43.0%     | Days Min 40 - 49 124   41.1%    
Days Min 30 - 39 36   23.8%     | Days Min 30 - 39 88   29.1%    
Days Min 20 - 29 4   2.6%     | Days Min 20 - 29 12   4.0%    
Days Min 10 - 19 0   0.0%     | Days Min 10 - 19 0   0.0%    
            |            
Precipitation           | Precipitation          
Highest 1.12 10/13/2014       | Highest 1.56 10/13/2014      
Average 0.06         | Average 0.08        
            |            
Days = 0.00 103   67.3%     | Days = 0.00 194   63.8%    
Days = T 12   7.8%     | Days = T 24   7.9%    
Days = 0.01 - 0.09 18   11.8%     | Days = 0.01 - 0.09 34   11.2%    
Days = 0.10 - 0.49 16   10.5%     | Days = 0.10 - 0.49 38   12.5%    
Days = 0.50 - 0.99 2   1.3%     | Days = 0.50 - 0.99 12   3.9%    
Days >= 1.00 2   1.3%     | Days >= 1.00 2   0.7%    
            |            
Snowfall           | Snowfall          
Highest 0 10/14/2024       | Highest 0.9 10/10/1932      
Average 0.0         | Average 0.0        
            |            
Days = 0.00 139   98.6%     | Days = 0.00 252   96.9%    
Days = T 2   1.4%     | Days = T 6   2.3%    
Days = 0.1 - 0.9 0   0.0%     | Days = 0.1 - 0.9 2   0.8%    
            |            
--------------------- --------- ----------- --------- --------- --------- | --------------------- --------- ----------- --------- --------- ---------
            |            
Date TX TN PP SF SD | Date TX TN PP SF SD
2024-10-14 56 40 0 0 0 | 2024-10-14 53 35 0 0 0
2023-10-09 61 37 0 0 0 | 2023-10-09 58 35 0 0 0
2022-10-10 76 39 0 0 0 | 2022-10-10 72 41 0 0 0
2021-10-11 73 60 0.69 0 0 | 2021-10-11 62 56 0.66 0 0
2020-10-12 69 39 0.01 0 0 | 2020-10-12 64 40 0.03 0 0
2019-10-14 61 33 0 0 0 | 2019-10-14 53 29 0 0 0
2018-10-08 84 61 0.23 0 0 | 2018-10-08 76 52 0.37 0 0
2017-10-09 82 49 0 0 0 | 2017-10-09 70 50 0 0 0
2016-10-10 74 42 T 0 0 | 2016-10-10 73 46 0 0 0
2015-10-12 76 57 0 0 0 | 2015-10-12 69 50 0 0 0
2014-10-13 68 53 1.12 0 0 | 2014-10-13 56 51 1.56 0 0
2013-10-14 66 31 0 0 0 | 2013-10-14 62 34 0 0 0
2012-10-08 61 36 0 0 0 | 2012-10-08 62 30 0 0 0
2011-10-10 78 44 0 0 0 | 2011-10-10 75 50 0 0 0
2010-10-11 81 53 0 0 0 | 2010-10-11 80 51 0 0 0
2009-10-12 47 39 0 0 0 | 2009-10-12 44 32 0 0 0
2008-10-13 75 56 0.06 0 0 | 2008-10-13 74 51 0.06 0 0
2007-10-08 82 55 T 0 0 | 2007-10-08 74 52 0.03 0 0
2006-10-09 72 50 0 0 0 | 2006-10-09 62 49 0 0 0
2005-10-10 70 43 0 0 0 | 2005-10-10 63 38 0 0 0
2004-10-11 67 42 0 0 0 | 2004-10-11 64 37 0 0 0
2003-10-13 73 41 0.36 0 0 | 2003-10-13 69 39 0.5 0 M
2002-10-14 60 36 0 0 0 | 2002-10-14 57 33 0 0 M
2001-10-08 68 41 0.01 0 0 | 2001-10-08 65 41 0 0 M
2000-10-09 57 26 0 0 0 | 2000-10-09 56 25 0 0 M
1999-10-11 71 41 0 0 0 | 1999-10-11 67 45 0 0 M
1998-10-12 64 45 0 0 0 | 1998-10-12 60 43 0 0 0
1997-10-13 68 41 0.25 0 0 | 1997-10-13 65 37 0.25 0 0
1996-10-14 76 51 0 0 0 | 1996-10-14 69 49 0 0 0
1995-10-09 68 41 0 0 0 | 1995-10-09 62 39 0 0 0
1994-10-10 64 32 0 0 0 | 1994-10-10 59 33 0 0 0
1993-10-11 58 31 0 0 0 | 1993-10-11 56 30 0 0 0
1992-10-12 63 47 0 0 0 | 1992-10-12 56 43 0 0 0
1991-10-14 53 41 0 0 0 | 1991-10-14 49 39 T 0 0
1990-10-08 50 43 0.31 0 0 | 1990-10-08 45 39 0.25 0 0
1989-10-09 64 36 0 0 0 | 1989-10-09 60 33 0.26 0 0
1988-10-10 69 47 0 0 0 | 1988-10-10 64 46 0 M 0
1987-10-12 63 26 0 0 0 | 1987-10-12 62 25 0 0 0
1986-10-13 43 38 0.19 0 0 | 1986-10-13 42 35 0.16 T 0
1985-10-14 61 48 T 0 0 | 1985-10-14 58 44 T 0 0
1984-10-08 75 51 0.04 0 0 | 1984-10-08 74 57 0 0 0
1983-10-10 66 39 0 0 0 | 1983-10-10 64 42 0.01 0 0
1982-10-11 54 44 T 0 0 | 1982-10-11 57 45 0 0 0
1981-10-12 67 47 0 0 0 | 1981-10-12 64 45 0 0 0
1980-10-13 63 27 0 0 0 | 1980-10-13 57 34 0.15 0 0
1979-10-08 75 41 0 0 0 | 1979-10-08 65 47 0.01 0 0
1978-10-09 71 48 0.13 0 0 | 1978-10-09 57 45 0.85 0 0
1977-10-10 67 40 0.45 0 0 | 1977-10-10 62 35 0.29 0 0
1976-10-11 75 46 0 0 0 | 1976-10-11 72 44 0 0 0
1975-10-13 90 68 0 0 0 | 1975-10-13 85 62 0 0 0
1974-10-14 57 43 0.01 0 0 | 1974-10-14 52 42 0 0 0
1973-10-08 73 59 0 0 0 | 1973-10-08 70 61 0.07 0 0
1972-10-09 61 36 0 0 0 | 1972-10-09 56 35 0 0 0
1971-10-11 65 37 0 0 0 | 1971-10-11 62 36 0 0 0
1970-10-12 70 51 T 0 0 | 1970-10-12 62 51 0 0 0
1969-10-13 55 37 0.12 0 0 | 1969-10-13 47 34 0.42 T 0
1968-10-14 83 64 0 0 0 | 1968-10-14 79 65 T 0 0
1967-10-09 52 40 0.17 0 0 | 1967-10-09 44 34 0.14 0 0
1966-10-10 69 42 0 0 0 | 1966-10-10 63 38 0 0 0
1965-10-11 62 41 0 0 0 | 1965-10-11 58 38 0 0 0
1964-10-12 64 41 0 0 0 | 1964-10-12 63 43 0 0 0
1963-10-14 81 40 0 0 0 | 1963-10-14 76 43 0 0 0
1962-10-08 64 49 0 0 0 | 1962-10-08 61 47 T 0 0
1961-10-09 82 59 0 0 0 | 1961-10-09 72 56 0 0 0
1960-10-10 79 40 0 0 0 | 1960-10-10 75 44 0 0 0
1959-10-12 57 32 0 0 0 | 1959-10-12 53 27 0 0 0
1958-10-13 80 52 0 0 0 | 1958-10-13 75 49 0 0 0
1957-10-14 72 46 0.08 0 0 | 1957-10-14 70 47 0.41 0 0
1956-10-08 76 46 0 0 0 | 1956-10-08 70 43 0 0 0
1955-10-10 77 52 0 0 0 | 1955-10-10 75 49 0 0 0
1954-10-11 68 61 T 0 0 | 1954-10-11 66 56 0 0 0
1953-10-12 70 48 0 0 0 | 1953-10-12 66 42 0 0 0
1952-10-13 68 37 0 0 0 | 1952-10-13 62 34 T 0 0
1951-10-08 58 34 0 0 0 | 1951-10-08 55 29 T 0 0
1950-10-09 68 44 0 0 0 | 1950-10-09 70 45 0 0 0
1949-10-10 81 58 0.19 0 0 | 1949-10-10 79 58 0.19 0 0
1948-10-11 56 40 0.01 0 0 | 1948-10-11 58 43 0.01 0 0
1947-10-13 72 49 0 0 0 | 1947-10-13 73 47 0 0 0
1946-10-14 68 42 T 0 0 | 1946-10-14 65 45 0.04 0 0
1945-10-08 49 35 0 0 0 | 1945-10-08 49 36 T 0 0
1944-10-09 49 39 0 0 0 | 1944-10-09 48 38 0 0 0
1943-10-11 80 55 0 0 0 | 1943-10-11 79 56 0 0 0
1942-10-12 73 38 0 0 0 | 1942-10-12 72 41 0 0 0
1941-10-13 73 57 1 0 0 | 1941-10-13 73 56 0.62 0 0
1940-10-14 66 43 0.47 0 0 | 1940-10-14 56 44 0.35 0 0
1939-10-09 79 60 0.12 0 0 | 1939-10-09 77 60 0.36 0 0
1938-10-10 88 55 0 0 0 | 1938-10-10 84 56 T 0 0
1937-10-11 74 44 0.05 0 0 | 1937-10-11 73 42 0 0 0
1936-10-12 72 44 0 0 0 | 1936-10-12 53 42 0 0 0
1935-10-14 76 56 0 0 0 | 1935-10-14 73 52 0 0 0
1934-10-08 82 52 0 0 0 | 1934-10-08 80 54 0 0 0
1933-10-09 58 38 0.06 0 0 | 1933-10-09 54 43 0.05 0 0
1932-10-10 42 30 0.3 T 0 | 1932-10-10 42 33 0.16 0.9 T
1931-10-12 54 45 0.02 0 0 | 1931-10-12 57 43 0.17 0 0
1930-10-13 77 57 0 0 0 | 1930-10-13 65 53 0.02 0 0
1929-10-14 74 45 0 0 0 | 1929-10-14 70 38 0 0 0
1928-10-08 84 58 T 0 0 | 1928-10-08 80 57 0.07 0 0
1927-10-10 65 39 T 0 0 | 1927-10-10 63 37 0 0 0
1926-10-11 66 55 0 0 0 | 1926-10-11 62 52 T 0 0
1925-10-12 57 49 T 0 0 | 1925-10-12 56 48 0 0 0
1924-10-13 79 55 0 0 0 | 1924-10-13 77 51 0 0 0
1923-10-08 67 41 0 0 0 | 1923-10-08 63 37 0 0 0
1922-10-09 60 45 0 0 0 | 1922-10-09 61 34 0 0 0
1921-10-10 59 40 0 0 0 | 1921-10-10 58 37 T 0 0
1920-10-11 83 64 0 0 0 | 1920-10-11 85 53 0 0 0
1919-10-13 64 44 T 0 0 | 1919-10-13 62 41 T 0 0
1918-10-14 66 41 0 0 0 | 1918-10-14 64 38 0 0 0
1917-10-08 48 28 0 0 0 | 1917-10-08 47 33 0 0 0
1916-10-09 55 40 0.15 0 0 | 1916-10-09 55 40 0 0 0
1915-10-11 72 54 0 0 0 | 1915-10-11 71 54 0 0 0
1914-10-12 59 47 0.36 0 0 | 1914-10-12 59 48 0.1 0 0
1913-10-13 77 51 0 0 0 | 1913-10-13 74 45 0 0 0
1912-10-14 68 42 0 0 0 | 1912-10-14 68 42 0 0 0
1911-10-09 60 43 0 0 0 | 1911-10-09 62 42 0 0 0
1910-10-10 71 42 0 0 0 | 1910-10-10 68 44 0 0 0
1909-10-11 50 33 0.03 T 0 | 1909-10-11 48 34 0.02 T 0
1908-10-12 60 38 0 0 0 | 1908-10-12 58 33 0 0 0
1907-10-14 64 38 0 0 0 | 1907-10-14 62 33 0.01 0 0
1906-10-08 74 44 0 0 0 | 1906-10-08 71 41 T 0 0
1905-10-09 82 52 0.02 0 0 | 1905-10-09 81 51 0.03 0 0
1904-10-10 78 56 0.01 0 0 | 1904-10-10 72 56 0.4 0 0
1903-10-12 64 43 0 0 0 | 1903-10-12 64 41 0 0 0
1902-10-13 57 37 0.02 0 0 | 1902-10-13 48 36 0.06 0 0
1901-10-14 55 39 0 0 0 | 1901-10-14 53 42 0 0 0
1900-10-08 59 37 0 0 0 | 1900-10-08 58 37 0 0 0
1899-10-09 76 50 0 0 0 | 1899-10-09 74 49 0 0 0
1898-10-10 70 60 0.04 0 0 | 1898-10-10 68 60 0.41 0 0
1897-10-11 62 55 0.23 0 0 | 1897-10-11 62 51 0.69 0 0
1896-10-12 62 44 0 0 0 | 1896-10-12 64 43 0 0 0
1895-10-14 61 43 0.04 0 0 | 1895-10-14 70 40 0.04 0 M
1894-10-08 52 38 0 0 0 | 1894-10-08 51 40 0 0 M
1893-10-09 79 55 0 0 0 | 1893-10-09 74 51 0 M M
1892-10-10 74 47 0 0 M | 1892-10-10 74 40 0 M M
1891-10-12 66 42 0 0 M | 1891-10-12 64 43 0 M M
1890-10-13 60 51 0.56 0 M | 1890-10-13 69 49 0.95 M M
1889-10-14 55 32 0 0 M | 1889-10-14 56 28 0 M M
1888-10-08 65 46 0 0 M | 1888-10-08 63 43 0 M M
1887-10-10 58 47 0.01 0 M | 1887-10-10 60 45 0 M M
1886-10-11 83 61 0 0 M | 1886-10-11 85 62 0 M M
1885-10-12 71 54 0 0 M | 1885-10-12 71 52 0 M M
1884-10-13 71 54 T 0 M | 1884-10-13 69 49 0.01 M M
1883-10-08 82 57 0 M M | 1883-10-08 85 57 0.38 M M
1882-10-09 65 48 0 M M | 1882-10-09 63 43 0 M M
1881-10-10 65 46 0 M M | 1881-10-10 65 43 0 M M
1880-10-11 69 53 0 M M | 1880-10-11 64 49 0 M M
1879-10-13 76 64 0.06 M M | 1879-10-13 74 62 0 M M
1878-10-14 80 61 0 M M | 1878-10-14 79 55 0 M M
1877-10-08 58 47 0 M M | 1877-10-08 55 45 0 M M
1876-10-09 65 38 0 M M | 1876-10-09 69 35 0 M M
1875-10-11 45 35 0 M M | 1875-10-11 44 34 0 M M
1874-10-12 48 31 0 M M | 1874-10-12 54 33 0 M M
1873-10-13 M M 0 M M | 1873-10-13 M M 0 M M
1872-10-14 M M 0 M M |            
1871-10-09 M M M M M |