July weather forecast
Decorah, IA

Weather in July

July, the same as June, is another warm summer month in Decorah, Iowa, with an average temperature fluctuating between 78.4°F (25.8°C) and 61.9°F (16.6°C).

Temperature

The warmest month is July, with an average high-temperature of 78.4°F (25.8°C) and an average low-temperature of 61.9°F (16.6°C).

Humidity

The average relative humidity in July is 84%.

Rainfall

In July, in Decorah, the rain falls for 18 days. Throughout July, 3.15" (80mm) of precipitation is accumulated. In Decorah, Iowa, during the entire year, the rain falls for 149 days and collects up to 30.59" (777mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In July, the average length of the day in Decorah is 15h and 1min.
On the first day of the month, sunrise is at 5:30 am and sunset at 8:51 pm. On the last day of July, in Decorah, Iowa, sunrise is at 5:56 am and sunset at 8:30 pm CDT.

Sunshine

In July, the average sunshine in Decorah is 9.7h.

UV index

The months with the highest UV index in Decorah are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Decorah?

July is the warmest month, with an average high-temperature of 78.4°F (25.8°C) and an average low-temperature of 61.9°F (16.6°C).

What is the average humidity in July in Decorah?

In July, the average relative humidity is 84%.

How many days does it rain in July in Decorah?

In July, the rain falls for 18 days. Throughout July, 3.15" (80mm) of precipitation is accumulated.

When it does not snow in Decorah?

June through September are months without snowfall.

What is the average length of the day in July in Decorah?

In Decorah, Iowa, the average day length in July is 15h and 1min.

When is the sunrise / sunset in July in Decorah?

On the first day of July in Decorah, sunrise is at 5:30 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:30 pm CDT.

How many hours of sunshine does Decorah have in July?

The average sunshine duration in July in Decorah, Iowa, is 9.7h.

What are the months with the highest UV index in Decorah?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Decorah, Iowa.

What is the UV index reading in July in Decorah?

In Decorah, the average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Decorah, IA

Average temperature in July - Decorah, IA
  • Average high temperature in July: 78.4°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in July: 61.9°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in July
Decorah, IA

Average pressure in July - Decorah, IA
  • Average pressure in July: 29.96"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in July
Decorah, IA

Average wind speed in July - Decorah, IA
  • Average wind speed in July: 7.1mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in July
Decorah, IA

Average humidity in July - Decorah, IA
  • Average humidity in July: 84%

The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in July
Decorah, IA

Average rainfall in July - Decorah, IA
  • Average rainfall in July: 3.15"

The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in July
Decorah, IA

Average rainfall days in July - Decorah, IA
  • Average rainfall days in July: 18 days

The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in July
Decorah, IA

Average snowfall in July - Decorah, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Decorah, IA

Average snowfall days in July - Decorah, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Decorah, IA

Average daylight in July / Average sunshine in July - Decorah, IA
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 20min).
The month with the shortest days is December (Average daylight: 9h and 2min).

  • Average sunshine in July: 9h and 42min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in July
Decorah, IA

Average sunshine days in July - Decorah, IA
  • Average sunshine days in July: 8.6 days

The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).

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Average UV index in July
Decorah, IA

Average UV index in July - Decorah, IA
  • Average UV index in July: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in July
Decorah, IA

Average cloud cover in July - Decorah, IA
  • Average cloud cover in July: 35

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in July
Decorah, IA

Average visibility in July - Decorah, IA
  • Average visibility in July: 5mi

The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).

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