July weather forecast
Decorah, IA

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Weather in July

As midsummer arrives, July holds the spot as the warmest month in Decorah. Despite the high temperatures now reaching to 78.4°F, relative humidity remains pretty consistent at 84%. Increased day length yields plentiful sunlight, prompting locals and tourists to partake in numerous outdoor activities and events. Heatwaves are a common occurrence, necessitating ample sun protection and hydration. Yet, amidst the heat, the beauty of the summer season in Decorah is in full display.

Temperature

Decorah's warmest month, July, registers temperatures that range from a high of 78.4°F to a low of 61.9°F.

Humidity

In July, the average relative humidity in Decorah is 84%.

Rainfall

In Decorah, during July, the rain falls for 18 days and regularly aggregates up to 3.15" of precipitation. Throughout the year, in Decorah, there are 149 rainfall days, and 30.59" of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Decorah.

Daylight

In July, the average length of the day is 15h and 1min.
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.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: In July, the UV index of 5 transforms into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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FAQ

What month is the hottest in Decorah?

Temperature readings reach their annual highs in July, averaging 78.4°F and a minimum average of 61.9°F.

What is the usual temperature for Decorah in July?

In July, in Decorah, the average high-temperature is 78.4°F, and the average low-temperature is 61.9°F.

What is the average humidity in July in Decorah?

In Decorah, the average relative humidity in July is 84%.

How many days does it rain in July in Decorah?

In Decorah, in July, during 18 rainfall days, 3.15" of precipitation is typically accumulated.

When it does not snow in Decorah?

In Decorah, Iowa, snow does not fall in June through September.

How many hours of daylight does Decorah have in July?

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

What time are sunrise and sunset in July in Decorah?

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

How many hours of sunshine does Decorah have in July?

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

What is the month with the highest UV index in Decorah?

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

How high is the UV index in July in Decorah?

In Decorah, Iowa, the average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
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 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in July: 9h and 4min

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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Decorah, Iowa, USA

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