2025 Meteorological Summer Climate Summary

Upper Mississippi River Climate Summary for Meteorological Summer 2025: Temperatures - Near to Warmer than Normal

During the 2025 Meteorological Summer (June 1 through August 31), average temperatures ranged from 65.8°F at Medford Taylor County Airport, WI (AWOS) to 73.1°F Decorah, IA (COOP). Temperature anomalies ranged from near normal to 3°F warmer than normal. The hottest temperature was 98°F on August 16 at Guttenberg Lock & Dam 10, IA (COOP) and the coldest temperature was 34°F on June 1 at Mondovi, WI; Owen 1E, WI; and Sparta Fort McCoy, WI (ASOS).

Precipitation - Near to Wetter than Normal

Precipitation ranged from 12.15" at Winona Municipal Max Conrad Field Airport, MN to 24.44" near Platteville, WI (CoCoRaHS). Precipitation anomalies ranged from near normal to 12" wetter than normal. The wettest day was from August 17-18 when 8.64" of rain fell at Decorah, IA (COOP).

Below are the climate summaries for the 2025 meteorological summer in La Crosse, WI and Rochester, MN

La Crosse, WI

2025 Meteorological Summer was Slightly Drier than Normal with Near-Normal Temperatures in La Crosse WI
 

The 2025 meteorological summer (June 1 through August 31) was drier than normal with near normal temperatures. More details on these statistics can be found below.

The table below provides a breakdown of the temperature departures from normal for La Crosse WI this summer...

        Summer 2025 Temperatures
             in La Crosse WI

                             Departure from
                                 Normal
                             --------------
June   Avg Temp       71.6°F    +0.6°F 
       Avg Max Temp   81.2°F    -0.5°F
       Avg Min Temp   62.0°F    +1.6°F 

July   Avg Temp       75.7°F    +0.7°F 
       Avg Max Temp   85.0°F    -0.4°F 
       Avg Min Temp   66.5°F    +2.0°F 

August Avg Temp       71.0°F    -1.8°F 
       Avg Max Temp   80.7°F    -2.5°F 
       Avg Min Temp   61.4°F    -0.9°F 

Summer Avg Temp       72.8°F    -0.1°F 
       Avg Max Temp   82.3°F    -1.2°F 
       Avg Min Temp   63.3°F    +0.9°F 

Other temperature tidbits this summer...

• The hottest temperature was 97°F on June 21.
• The coldest high temperature was 67°F on June 9. 
• The warmest low temperature was 80°F on June 22.
• The coldest temperature was 46°F on June 1.
• The temperature climbed to or exceeded 90°F on 13 days. The long-term average (1873-2025) is 13.1 days. The greatest number was 41 days in 1988.
• Temperatures averaged above normal on 42 days, below normal on 42 days, and normal on 8 days.

Precipitation - Slightly Drier than Normal

• During the meteorological summer, La Crosse Regional Airport received 13.74" of rain.
• This was 0.53" wetter than the 1991-2020 normal of 13.21".

The table below contains the monthly rainfall totals and their departures from normal for this summer.

         Summer 2025 Rainfall
            in La Crosse WI

                           Departure
   Month    Rain Total    from Normal
   -----    ----------    -----------
   June     6.27 inches   +1.19 inches 
   July     4.64 inches   +0.41 inches 
   August   2.83 inches   -0.11 inches 
 
   Summer  13.74 inches   -0.53 inches 

Other rainfall tidbits this summer...

• The wettest day occurred on July 16 when 2.21" of rain fell. 

Measurable rain fell on 36 days (39.1%) and trace amounts fell on another 11 days (12%).  

• No Rain - 45 days (48.9%)
• Trace - 11 days (12%)
• 0.01-0.09 inches - 18 days (19.6%)
• 0.10-0.24 inches - 5 days (5.4%)
• 0.25-0.49 inches - 4 days (4.3%)
• 0.50-0.99 inches - 4 days (4.3%)
• 1.00-1.99 inches - 4 days (4.3%)
• 2.00-2.99 inches - 1 days (1.1%)

Sky...

• It was clear on 43 days.
• It was partly cloudy on 46 days.
• It was cloudy on 3 days.

Sea Level Pressure...

• Highest was 30.34 inches on July 31.
• Lowest was 29.54 inches on June 21. 

Winds...

• Highest sustained wind was 46 mph from the northwest on July 28.
• Highest wind gust was 65 mph from the north northwest on July 28.

Rochester, MN  
 

2025 Meteorological Summer was Warmer and Wetter than Normal in Rochester MN

The 2025 meteorological summer (June 1 through August 31) was warmer and wetter than normal for Rochester, MN.  More details on these statistics can be found below.

Other temperature tidbits this summer...

• The hottest temperature was 90°F on June 2, June 21, and June 22.
• The coldest high temperature was 66°F on June 9. 
• The warmest low temperature was 75°F on June 24-26. 
• The coldest temperature was 48°F on August 25.
• The temperature reached 90 degrees on 3 days.  The long-term average (1886-2024) is 9.3 days.
• Temperatures averaged above normal on 60 days, below normal on 23 days, and normal temperatures on 9 days.

Precipitation - 18th Wettest

During the meteorological summer, Rochester International Airport received 16.52" of rain.

This was 2.86" wetter than the 1991-2020 normal of 13.66".

This was the 18th wettest summer and wettest since 2019 (18 inches - 12th wettest). 8 out of the 18 wettest summers have occurred since 2000. Below are the 20 wettest meteorological summers in Rochester, MN.

Wettest Meteorological Summers
      in Rochester MN
         1886-2025

Rank     Rainfall       Year
----     --------       ----
 1     23.34 inches     2000
 2     22.86 inches     1990
 3     20.36 inches     1981
 4     19.87 inches     1978
 5     19.54 inches     2024
 6     19.32 inches     1993
 7     19.14 inches     2007
 8     18.90 inches     1942
 9     18.70 inches     1999
10     18.23 inches     1938
11     18.20 inches     1951
12     18.00 inches     2019
13     17.84 inches     2002
14     17.04 inches     1935
15     16.80 inches     1952
16     16.58 inches     2016
17     16.56 inches     2004
18     16.52 inches     2025
19     16.49 inches     2010
20     16.24 inches     1914

The table below contains the monthly rainfall totals and their departures from normal for this summer.

         Summer 2025 Rainfall
            in Rochester MN

                           Departure
   Month    Rain Total    from Normal
   -----    ----------    -----------
   June     6.38 inches   +1.03 inches 
   July     3.33 inches   -0.86 inches 
   August   6.81 inches   +2.69 inches - 7th wettest 
 
   Summer  16.52 inches   +2.86 inches - 18th wettest

Other rainfall tidbits this summer...

• The wettest day occurred on August 9 when 3.06" of rain fell. This was their 4th wettest August day and the wettest August day since August 27, 2021. The other 3 wetter days include: August 18, 2007 (5.16"), August 27, 2021 (3.51") and August 1, 1931 (3.27"). All time, only 31 days have been wetter. It was the wettest day since July 23, 2022 (3.09"). The wettest day was 7.47" on July 11, 1981.

Measurable rain fell on 40 days (43.5%) and trace amounts fell on another 11 days (12%).

• No Rain - 40 days (43.5%)
• Trace - 11 days (12%)
• 0.01-0.09 inches - 17 days (18.5%)
• 0.10-0.24 inches - 7 days (7.6%)
• 0.25-0.49 inches - 5 days (5.4%)
• 0.50-0.99 inches - 9 days (9.8%)
• 1.00-1.99 inches - 2 days (2.2%)
• 2.00-2.99 inches - 0 days (0%)
• 3.00-3.99 inches - 1 days (11.%)

Sky...

• It was clear on 46 days.
• It was partly cloudy on 42 days.
• It was cloudy on 4 days.

Sea Level Pressure...

• Highest was 30.37 inches on July 31.
• Lowest was 29.53 inches on June 21.  

Winds...

• Highest sustained wind was 52 mph from the northwest on July 28.
• Highest wind gust was 76 mph from the north northwest on July 28.