July weather forecast
Sumner, IA

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Weather in July

July, the same as June, is another warm summer month in Sumner, Iowa, with an average temperature varying between 79.2°F (26.2°C) and 62.6°F (17°C).

Temperature

The month of July, characterized by an average high of 79.2°F (26.2°C) and a low of 62.6°F (17°C), is recognized as the warmest.

Humidity

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

Rainfall

In Sumner, during July, the rain falls for 17.3 days and regularly aggregates up to 3.07" (78mm) of precipitation. Throughout the year, there are 146.8 rainfall days, and 30.79" (782mm) of precipitation is accumulated.

Snowfall

In Sumner, snow does not fall in June through September.

Daylight

In Sumner, Iowa, the average length of the day in July is 14h and 58min.
On the first day of the month, sunrise is at 5:34 am and sunset at 8:50 pm. On the last day of July, in Sumner, sunrise is at 5:59 am and sunset at 8:30 pm CDT.

Sunshine

The months with the most sunshine in Sumner are July and August, with an average of 9.8h of sunshine.

UV index

In Sumner, the average daily maximum UV index in July is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during July translates into these guidelines:
Take precautions - Protection against sunburn is recommended. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What are the warmest months in Sumner?

Sumner's warmest temperatures are experienced in July, with average high temperatures of 79.2°F (26.2°C) and lows of 62.6°F (17°C).

What is the average July temperature in Sumner?

The average high-temperature and low-temperature in Sumner, Iowa, during July are 79.2°F (26.2°C) and 62.6°F (17°C) respectively.

What is the average humidity in July in Sumner?

In July, the average relative humidity is 84%.

How much does it rain in Sumner in July?

In Sumner, Iowa, in July, it is raining for 17.3 days, with typically 3.07" (78mm) of accumulated precipitation.

When it does not snow in Sumner?

In Sumner, snow does not fall in June through September.

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

In Sumner, the average day length in July is 14h and 58min.

What time are sunrise and sunset in July in Sumner?

On the first day of July in Sumner, Iowa, sunrise is at 5:34 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:30 pm CDT.

What are the months with the most sunshine in Sumner?

The months with the most sunshine are July and August, with an average of 9.8h of sunshine.

How many hours of sunshine does Sumner have in July?

The average sunshine duration in July is 9.8h.

What is the UV index reading in July in Sumner?

In July, the average daily maximum UV index in Sumner is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
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
Sumner, IA

Average temperature in July - Sumner, IA
  • Average high temperature in July: 79.2°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (23.5°F).

  • Average low temperature in July: 62.6°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

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Average pressure in July
Sumner, IA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in July
Sumner, IA

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

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

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Average humidity in July
Sumner, IA

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

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in July
Sumner, IA

Average rainfall in July - Sumner, IA
  • Average rainfall in July: 3.07"

The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.14").

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Average rainfall days in July
Sumner, IA

Average rainfall days in July - Sumner, IA
  • Average rainfall days in July: 17.3 days

The month with the highest number of rainy days is May (20.3 days).
The months with the least rainy days are January and February (4.3 days).

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Average snowfall in July
Sumner, IA

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

The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Sumner, IA

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

The month with the highest number of snowfall days is January (13.6 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
Sumner, IA

Average daylight in July / Average sunshine in July - Sumner, 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 6min).

  • Average sunshine in July: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in July
Sumner, IA

Average sunshine days in July - Sumner, IA
  • Average sunshine days in July: 9.8 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is June (7.3 days).

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Average UV index in July
Sumner, IA

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

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in July
Sumner, IA

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

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 32).

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Average visibility in July
Sumner, IA

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

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

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Sumner, Iowa, USA

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