July weather forecast
Roseville, IL

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Weather in July

July, like June, in Roseville, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 82°F (27.8°C) and 64.9°F (18.3°C).

Temperature

In Roseville, temperatures reach their average annual highs in July, measuring 82°F (27.8°C) and a minimum average of 64.9°F (18.3°C).

Heat index

July's average heat index is estimated at a hot 89.6°F (32°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

With an average relative humidity of 84%, July is the most humid month in Roseville, Illinois.

Rainfall

In July, the rain falls for 17 days. Throughout July, 3.03" (77mm) of precipitation is accumulated. In Roseville, during the entire year, the rain falls for 149.4 days and collects up to 30.16" (766mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in July is 14h and 45min.
On the first day of July, sunrise is at 5:35 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:18 pm CDT.

Sunshine

In Roseville, the average sunshine in July is 10h.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Roseville. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What month is the hottest in Roseville?

The highest temperatures in Roseville are recorded in July, with averages reaching a high of 82°F (27.8°C) and a low of 64.9°F (18.3°C).

What is the average July temperature in Roseville?

In Roseville, in July, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is estimated at 89.6°F (32°C).

What is the most humid month in Roseville?

With an average relative humidity of 84%, July is the most humid month in Roseville, Illinois.

What is the average humidity in July in Roseville?

In July, the average relative humidity in Roseville is 84%.

How many days does it rain in July in Roseville?

In Roseville, in July, during 17 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in Roseville?

May through September are months without snowfall in Roseville.

How many hours of daylight does Roseville have in July?

In Roseville, Illinois, the average day length in July is 14h and 45min.

When is the sunrise / sunset in July in Roseville?

In July, on the first day of the month, sunrise is at 5:35 am and sunset at 8:37 pm. On the last day of the month, in Roseville, Illinois, sunrise is at 5:59 am and sunset at 8:18 pm CDT.

How many hours of sunshine does Roseville have in July?

In Roseville, Illinois, the average sunshine duration in July is 10h.

When is the highest UV index in Roseville?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in July in Roseville?

In Roseville, Illinois, 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
Roseville, IL

Average temperature in July - Roseville, IL
  • Average high temperature in July: 82°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in July: 64.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

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Average pressure in July
Roseville, IL

Average pressure in July - Roseville, 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 (29.9"Hg).

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Average wind speed in July
Roseville, IL

Average wind speed in July - Roseville, IL
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in July
Roseville, IL

Average humidity in July - Roseville, IL
  • Average humidity in July: 84%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in July
Roseville, IL

Average rainfall in July - Roseville, IL
  • Average rainfall in July: 3.03"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in July
Roseville, IL

Average rainfall days in July - Roseville, IL
  • Average rainfall days in July: 17 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in July
Roseville, IL

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

The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Roseville, IL

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

The month with the highest number of snowfall days is January (10.9 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
Roseville, IL

Average daylight in July / Average sunshine in July - Roseville, IL
  • Average daylight in July: 14h and 5min

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 0min

The month with the most sunshine is June (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
Roseville, IL

Average sunshine days in July - Roseville, IL
  • Average sunshine days in July: 9.9 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.2 days).

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Average UV index in July
Roseville, IL

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

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

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Average cloud cover in July
Roseville, IL

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

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in July
Roseville, IL

Average visibility in July - Roseville, IL
  • Average visibility in July: 5mi

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

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Roseville, Illinois, USA

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