July weather forecast
Saint Charles, IA

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Weather in July

July, like June, in Saint Charles, Iowa, is another warm summer month, with temperature in the range of an average high of 83.3°F (28.5°C) and an average low of 65.1°F (18.4°C).

Temperature

With average high temperatures of 83.3°F (28.5°C) and lows of 65.1°F (18.4°C), July is the warmest month.

Heat index

Throughout July, the heat index is appraised at a tropical 93.2°F (34°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.

Humidity

In Saint Charles, the average relative humidity in July is 81%.

Rainfall

In Saint Charles, Iowa, in July, during 15.8 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, in Saint Charles, there are 133 rainfall days, and 26.14" (664mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Saint Charles, Iowa, the average length of the day in July is 14h and 49min.
On the first day of the month, sunrise is at 5:46 am and sunset at 8:52 pm. On the last day of July, in Saint Charles, sunrise is at 6:10 am and sunset at 8:32 pm CDT.

Sunshine

With an average of 10.3h of sunshine, July has the most sunshine of the year in Saint Charles.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In July, the maximum UV index of 6 suggests this advice:
Shield from overexposure. Defense against sun-related harm is required. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What are the warmest months in Saint Charles?

The warmest period in Saint Charles, Iowa, is July, when temperatures fluctuate between an average high of 83.3°F (28.5°C) and a low of 65.1°F (18.4°C).

Is it hot in Saint Charles during July?

In July, in Saint Charles, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 65.1°F (18.4°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 93.2°F (34°C).

What is the average humidity in July in Saint Charles?

In July, the average relative humidity in Saint Charles is 81%.

How much does it rain in Saint Charles in July?

In July, in Saint Charles, the rain falls for 15.8 days. Throughout July, 2.28" (58mm) of precipitation is accumulated.

When it does not snow in Saint Charles?

June through September are months without snowfall in Saint Charles, Iowa.

What is the average length of the day in July in Saint Charles?

The average day length in July in Saint Charles is 14h and 49min.

What time are sunrise and sunset in July in Saint Charles?

On the first day of July in Saint Charles, Iowa, sunrise is at 5:46 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:32 pm CDT.

What month has the most sunshine in Saint Charles?

With an average of 10.3h of sunshine, July has the most sunshine of the year.

How many hours of sunshine does Saint Charles have in July?

The average sunshine duration in July in Saint Charles, Iowa, is 10.3h.

What are the months with the highest UV index in Saint Charles?

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

What is the UV index intensity in July in Saint Charles?

The average daily maximum UV index in July in Saint Charles is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe 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
Saint Charles, IA

Average temperature in July - Saint Charles, IA
  • Average high temperature in July: 83.3°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (28.8°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 (15.3°F).

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Average pressure in July
Saint Charles, IA

Average pressure in July - Saint Charles, 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 (29.88"Hg).

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Average wind speed in July
Saint Charles, IA

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

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in July
Saint Charles, IA

Average humidity in July - Saint Charles, IA
  • Average humidity in July: 81%

The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in July
Saint Charles, IA

Average rainfall in July - Saint Charles, IA
  • Average rainfall in July: 2.28"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.91").

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Average rainfall days in July
Saint Charles, IA

Average rainfall days in July - Saint Charles, IA
  • Average rainfall days in July: 15.8 days

The month with the highest number of rainy days is June (17.9 days).
The months with the least rainy days are January and February (3.8 days).

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Average snowfall in July
Saint Charles, IA

Average snowfall in July - Saint Charles, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Saint Charles, IA

Average snowfall days in July - Saint Charles, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (9.1 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
Saint Charles, IA

Average daylight in July / Average sunshine in July - Saint Charles, 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 18min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in July
Saint Charles, IA

Average sunshine days in July - Saint Charles, IA
  • Average sunshine days in July: 11.9 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (9.8 days).

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Average UV index in July
Saint Charles, IA

Average UV index in July - Saint Charles, IA
  • Average UV index in July: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

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Average cloud cover in July
Saint Charles, IA

Average cloud cover in July - Saint Charles, IA
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).

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Average visibility in July
Saint Charles, IA

Average visibility in July - Saint Charles, IA
  • Average visibility in July: 6mi

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

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Saint Charles, Iowa, USA

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