United StatesThe climate of Decorah
The current climate in Decorah features temperatures ranging from a high of 27°C to a low of -4°C throughout the year. The average yearly temperature is around 13°C. At night, temperatures in the colder months average around -12°C and in the warmer months around 17°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Decorah, Iowa.
Temperature records
The highest temperature recorded in Decorah in recent years was 39°C in August 2023. The lowest daytime temperature recorded was -27°C in January 2019.
Precipitation and snowfall
On average, Decorah gets 1011 mm of precipitation each year. Of this, about 154 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Decorah?
The best time to visit Decorah for mild to warm weather is May up to October. You might get some rain, but the temperatures are just right to explore Decorah.
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Climate Table of Decorah
The climate table of Decorah shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | -4 | -2 | 5 | 12 | 20 | 26 | 27 | 26 | 23 | 15 | 6 | 1 |
| Temp. min (°C) | -12 | -10 | -3 | 2 | 11 | 16 | 17 | 16 | 14 | 6 | -2 | -6 |
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| Precipitation (mm) | 17 | 25 | 54 | 87 | 133 | 166 | 108 | 130 | 106 | 102 | 44 | 39 |
| Snow (cm) | 37 | 35 | 19 | 16 | 0 | 0 | 0 | 0 | 0 | 0,6 | 13 | 34 |
| UV Index | 1 | 2 | 2 | 4 | 4 | 6 | 4 | 4 | 4 | 2 | 2 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Decorah, Iowa. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Decorah
Yearly Temperature in Decorah
Precipitation charts
These charts show the average amount of precipitation in Decorah, Iowa. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Decorah
Total Yearly Precipitation in Decorah
Average Snowfall per Month in Decorah
Total Yearly Snowfall in Decorah
UV index chart
This chart shows the average UV index per month in Decorah, Iowa. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Decorah
Weather experiences in Decorah
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Average weather in Decorah by month
Click on a month below to see detailed weather info for Decorah. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.