July weather forecast
Littleton, IL

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Weather in July

July, like June, in Littleton, Illinois, is a moderately hot summer month, with an average temperature ranging between max 83.1°F (28.4°C) and min 66.4°F (19.1°C).

Temperature

July, with its high-temperature average of 83.1°F (28.4°C) and a low-temperature average of 66.4°F (19.1°C), is the warmest month.

Heat index

July's mean heat index is estimated at a tropical 91.4°F (33°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

The most humid month is July, with an average relative humidity of 82%.

Rainfall

In Littleton, Illinois, in July, during 16.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Littleton, during the entire year, the rain falls for 146.5 days and collects up to 29.41" (747mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in July in Littleton is 14h and 42min.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:36 pm. On the last day of July, sunrise is at 6:00 am and sunset at 8:17 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: During July, 6 as the daily maximum UV index converts into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

The average temperatures reach their apex in July, averaging 83.1°F (28.4°C) at the high end and 66.4°F (19.1°C) at the low end.

How hot is July?

The high-temperature, in July, in Littleton, is 83.1°F (28.4°C), while the low-temperature averages to 66.4°F (19.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in July is estimated at 91.4°F (33°C).

What is the most humid month?

With an average relative humidity of 82%, July is the most humid month.

What is the average humidity in July?

The average relative humidity in July is 82%.

How much does it rain in Littleton in July?

In Littleton, during July, the rain falls for 16.3 days and regularly aggregates up to 2.36" (60mm) of precipitation.

When it does not snow in Littleton?

May through September are months without snowfall.

What is the average length of the day in July?

In July, the average day length is 14h and 42min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:37 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:17 pm CDT.

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.3h of sunshine.

How long on average sun shines in July?

In July, the average sunshine duration is 10.3h.

What are the months with the highest UV index?

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

What is the UV index intensity in July?

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

Average temperature in July - Littleton, IL
  • Average high temperature in July: 83.1°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in July: 66.4°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in July
Littleton, IL

Average pressure in July - Littleton, IL
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Littleton, IL

Average wind speed in July - Littleton, IL
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).

Average humidity in July
Littleton, IL

Average humidity in July - Littleton, IL
  • Average humidity in July: 82%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Littleton, IL

Average rainfall in July - Littleton, IL
  • Average rainfall in July: 2.36"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is December (1.46").

Average rainfall days in July
Littleton, IL

Average rainfall days in July - Littleton, IL
  • Average rainfall days in July: 16.3 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (6 days).

Average snowfall in July
Littleton, IL

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

The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Littleton, IL

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

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Littleton, IL
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • 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 18min).

Average sunshine days in July
Littleton, IL

Average sunshine days in July - Littleton, IL
  • Average sunshine days in July: 11.8 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.6 days).

Average UV index in July
Littleton, IL

Average UV index in July - Littleton, IL
  • 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, November and December (UV index 2).

Average cloud cover in July
Littleton, IL

Average cloud cover in July - Littleton, IL
  • Average cloud cover in July: 29

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).

Average visibility in July
Littleton, IL

Average visibility in July - Littleton, 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).

Littleton, Illinois, USA

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