July weather forecast
Anna, IL

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Weather in July

July in Anna, Illinois, is a hot summer month, with an average temperature ranging between min 69.1°F (20.6°C) and max 88.3°F (31.3°C).

Temperature

In Anna, the peak average temperatures are observed in July, with a high of 88.3°F (31.3°C) and a low of 69.1°F (20.6°C).

Heat index

In July, the average heat index is calculated to be an extremely hot 104°F (40°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In July, the average relative humidity is 76%.

Rainfall

In Anna, Illinois, in July, during 15.9 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In Anna, during the entire year, the rain falls for 143 days and collects up to 27.44" (697mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Anna, the average length of the day in July is 14h and 27min.
On the first day of the month, sunrise is at 5:40 am and sunset at 8:21 pm. On the last day of July, in Anna, sunrise is at 6:01 am and sunset at 8:05 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in July converts into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What month is the hottest in Anna?

July is the warmest month of the year, registering average temperatures as high as 88.3°F (31.3°C) and as low as 69.1°F (20.6°C).

How hot does it get in Anna in July?

The average high-temperature and low-temperature in Anna during July are 88.3°F (31.3°C) and 69.1°F (20.6°C) respectively. In July, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 104°F (40°C).

What is the average humidity in July in Anna?

In Anna, Illinois, the average relative humidity in July is 76%.

How much does it rain in Anna in July?

In Anna, during July, the rain falls for 15.9 days and regularly aggregates up to 2.48" (63mm) of precipitation.

When it does not snow in Anna?

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

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

In July, the average day length in Anna, Illinois, is 14h and 27min.

When is the sunrise / sunset in July in Anna?

In July, on the first day of the month, sunrise is at 5:40 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:05 pm CDT.

What month has the most sunshine in Anna?

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

How long on average sun shines in July in Anna?

The average sunshine duration in July in Anna is 10.4h.

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

The months with the highest UV index in Anna, Illinois, are May through August, with an average maximum UV index of 6.

What is the UV index reading in July in Anna?

The average daily maximum UV index in July in Anna is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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
Anna, IL

Average temperature in July - Anna, IL
  • Average high temperature in July: 88.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in July: 69.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in July
Anna, IL

Average pressure in July - Anna, IL
  • Average pressure in July: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in July
Anna, IL

Average wind speed in July - Anna, IL
  • Average wind speed in July: 5.7mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in July
Anna, IL

Average humidity in July - Anna, IL
  • Average humidity in July: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in July
Anna, IL

Average rainfall in July - Anna, IL
  • Average rainfall in July: 2.48"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").

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Average rainfall days in July
Anna, IL

Average rainfall days in July - Anna, IL
  • Average rainfall days in July: 15.9 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in July
Anna, IL

Average snowfall in July - Anna, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Anna, IL

Average snowfall days in July - Anna, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Anna, IL

Average daylight in July / Average sunshine in July - Anna, IL
  • Average daylight in July: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in July
Anna, IL

Average sunshine days in July - Anna, IL
  • Average sunshine days in July: 12.8 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in July
Anna, IL

Average UV index in July - Anna, IL
  • Average UV index in July: 6

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

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Average cloud cover in July
Anna, IL

Average cloud cover in July - Anna, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).

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Average visibility in July
Anna, IL

Average visibility in July - Anna, IL
  • Average visibility in July: 6mi

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

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Anna, Illinois, USA

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