July weather forecast
Altoona, IA

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Weather in July

July is the hottest month of the year in Altoona with temperatures reaching a peak average of 82.4°F (28°C). This period also showcases decreased rainfall and lower wind speeds, contributing to the significantly warm conditions. The city enjoys the longest daylight hours of the year during this month, despite a slight reduction from June. With clear skies and minimal cloud cover, July is undeniably the peak of summer. Outdoor enthusiasts can take advantage of the warm temperatures and ample sunlight, though staying hydrated is advised due to high heat levels.

Temperature

July stands out as Altoona's warmest month, with temperatures ranging between an average high of 82.4°F (28°C) and a low of 65.1°F (18.4°C).

Heat index

The average heat index in July is calculated to be a tropical 89.6°F (32°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

In Altoona, the average relative humidity in July is 82%.

Rainfall

In Altoona, in July, it is raining for 9.5 days, with typically 0.55" (14mm) of accumulated precipitation. In Altoona, during the entire year, the rain falls for 79 days and collects up to 5.94" (151mm) of precipitation.

Snowfall

In Altoona, snow does not fall in May through September.

Daylight

In July, the average length of the day is 14h and 50min.
On the first day of July in Altoona, Iowa, sunrise is at 5:43 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 8:32 pm CDT.

Sunshine

With an average of 10.4h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index in Altoona are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What are the warmest months in Altoona?

July, recording an average high temperature of 82.4°F (28°C) and a low temperature of 65.1°F (18.4°C), is Altoona's warmest month.

Is it hot in Altoona during July?

The average high-temperature, in July, in Altoona, is 82.4°F (28°C), while the average low-temperature is 65.1°F (18.4°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 89.6°F (32°C).

What is the average humidity in July in Altoona?

In July, the average relative humidity in Altoona is 82%.

How much does it rain in Altoona in July?

In Altoona, in July, it is raining for 9.5 days, with typically 0.55" (14mm) of accumulated precipitation.

When it does not snow in Altoona?

In Altoona, Iowa, snow does not fall in May through September.

How many hours of daylight does Altoona have in July?

In Altoona, Iowa, the average day length in July is 14h and 50min.

What time are sunrise and sunset in July in Altoona?

In July, on the first day of the month, sunrise is at 5:43 am and sunset at 8:52 pm. On the last day of the month, in Altoona, sunrise is at 6:08 am and sunset at 8:32 pm CDT.

What month has the most sunshine in Altoona?

The month with the most sunshine in Altoona, Iowa, is July, with an average of 10.4h of sunshine.

How long on average sun shines in July in Altoona?

In Altoona, Iowa, the average sunshine duration in July is 10.4h.

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

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index reading in July in Altoona?

In Altoona, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
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
Altoona, IA

Average temperature in July - Altoona, IA
  • Average high temperature in July: 82.4°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (27.5°F).

  • Average low temperature in July: 65.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in July
Altoona, IA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in July
Altoona, IA

Average wind speed in July - Altoona, IA
  • Average wind speed in July: 7mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in July
Altoona, IA

Average humidity in July - Altoona, IA
  • Average humidity in July: 82%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in July
Altoona, IA

Average rainfall in July - Altoona, IA
  • Average rainfall in July: 0.55"

The wettest month (with the highest rainfall) is May (0.98").
The driest months (with the least rainfall) are January, February and December (0.24").

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Average rainfall days in July
Altoona, IA

Average rainfall days in July - Altoona, IA
  • Average rainfall days in July: 9.5 days

The month with the highest number of rainy days is May (11.6 days).
The month with the least rainy days is January (1.8 days).

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Average snowfall in July
Altoona, IA

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

The month with the highest snowfall is January (0.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Altoona, IA

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

The month with the highest number of snowfall days is January (6.2 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
Altoona, IA

Average daylight in July / Average sunshine in July - Altoona, IA
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in July
Altoona, IA

Average sunshine days in July - Altoona, IA
  • Average sunshine days in July: 18.5 days

The month with the most sunshine days is December (25.5 days).
The month with the least sunshine days is June (15.5 days).

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Average UV index in July
Altoona, IA

Average UV index in July - Altoona, IA
  • Average UV index in July: 6

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

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Average cloud cover in July
Altoona, IA

Average cloud cover in July - Altoona, IA
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).

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Average visibility in July
Altoona, IA

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

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

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Altoona, Iowa, USA

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