July weather forecast
Lewistown, IL

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Weather in July

July, the same as June, is a moderately hot summer month in Lewistown, Illinois, with an average temperature varying between 82.8°F (28.2°C) and 65.8°F (18.8°C).

Temperature

Lewistown's July weather reaches an average high of 82.8°F (28.2°C) and an average low of 65.8°F (18.8°C), making it the warmest month.

Heat index

July's heat index is calculated to be a hot 91.4°F (33°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. 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 quite important for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The most humid month is July, with an average relative humidity of 83%.

Rainfall

In Lewistown, in July, during 15.8 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In Lewistown, during the entire year, the rain falls for 131.7 days and collects up to 22.48" (571mm) of precipitation.

Snowfall

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

Daylight

In Lewistown, Illinois, the average length of the day in July is 14h and 43min.
On the first day of the month, sunrise is at 5:34 am and sunset at 8:34 pm. On the last day of July, sunrise is at 5:57 am and sunset at 8:16 pm CDT.

Sunshine

The months with the most sunshine are June and July, with an average of 10.1h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 6 in July translates into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What part of the year is the hottest in Lewistown?

Lewistown experiences its highest temperatures in July, with an average peak of 82.8°F (28.2°C) and a low of 65.8°F (18.8°C).

How hot does it get in Lewistown in July?

Lewistown in July has an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 65.8°F (18.8°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 91.4°F (33°C).

What is the most humid month in Lewistown?

With an average relative humidity of 83%, July is the most humid month in Lewistown.

What is the average humidity in July in Lewistown?

In Lewistown, Illinois, the average relative humidity in July is 83%.

How much does it rain in Lewistown in July?

In Lewistown, in July, it is raining for 15.8 days, with typically 2.17" (55mm) of accumulated precipitation.

When it does not snow in Lewistown?

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

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

In July, the average day length in Lewistown, Illinois, is 14h and 43min.

When is the sunrise / sunset in July in Lewistown?

In July, on the first day of the month, sunrise is at 5:34 am and sunset at 8:34 pm. On the last day of the month, in Lewistown, sunrise is at 5:57 am and sunset at 8:16 pm CDT.

What are the months with the most sunshine in Lewistown?

The months with the most sunshine in Lewistown are June and July, with an average of 10.1h of sunshine.

How many hours of sunshine does Lewistown have in July?

In Lewistown, Illinois, the average sunshine duration in July is 10.1h.

What are the months with the highest UV index in Lewistown?

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

What is the UV index reading in July in Lewistown?

In Lewistown, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents 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
Lewistown, IL

Average temperature in July - Lewistown, IL
  • Average high temperature in July: 82.8°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in July: 65.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

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Average pressure in July
Lewistown, IL

Average pressure in July - Lewistown, IL
  • 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 (29.91"Hg).

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Average wind speed in July
Lewistown, IL

Average wind speed in July - Lewistown, IL
  • Average wind speed in July: 6.5mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in July
Lewistown, IL

Average humidity in July - Lewistown, IL
  • Average humidity in July: 83%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in July
Lewistown, IL

Average rainfall in July - Lewistown, IL
  • Average rainfall in July: 2.17"

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.94").

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Average rainfall days in July
Lewistown, IL

Average rainfall days in July - Lewistown, IL
  • Average rainfall days in July: 15.8 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall in July
Lewistown, IL

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

The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Lewistown, IL

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

The month with the highest number of snowfall days is January (9.4 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
Lewistown, IL

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

  • Average sunshine in July: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in July
Lewistown, IL

Average sunshine days in July - Lewistown, IL
  • Average sunshine days in July: 11.7 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in July
Lewistown, IL

Average UV index in July - Lewistown, 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).

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Average cloud cover in July
Lewistown, IL

Average cloud cover in July - Lewistown, IL
  • Average cloud cover in July: 31

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in July
Lewistown, IL

Average visibility in July - Lewistown, 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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Lewistown, Illinois, USA

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