July weather forecast
Frederick, IL

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Weather in July

July, like June, in Frederick, Illinois, is another warm summer month, with an average temperature ranging between max 83.3°F (28.5°C) and min 66.6°F (19.2°C).

Temperature

Temperature readings reach their annual highs in July, averaging 83.3°F (28.5°C) and a minimum average of 66.6°F (19.2°C).

Heat index

July's mean heat index is computed to be a tropical 93.2°F (34°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

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

Rainfall

In Frederick, in July, during 15 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 142.2 rainfall days, and 27.95" (710mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Frederick.

Daylight

In July, the average length of the day in Frederick is 14h and 41min.
On the first day of July, sunrise is at 5:36 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:16 pm CDT.

Sunshine

June and July, with an average of 10.2h of sunshine, are months with the most sunshine in Frederick, Illinois.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Frederick. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during July, leads to the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Frederick?

July is the month when Frederick's temperatures reach their peak, with averages of 83.3°F (28.5°C) and lows of 66.6°F (19.2°C).

How hot is it in Frederick in July?

The high-temperature, in July, in Frederick, records 83.3°F (28.5°C), while the low-temperature is 66.6°F (19.2°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is computed to be 93.2°F (34°C).

What is the most humid month in Frederick?

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

What is the average humidity in July in Frederick?

The average relative humidity in July in Frederick, Illinois, is 82%.

How many days does it rain in July in Frederick?

In July, in Frederick, Illinois, the rain falls for 15 days. Throughout July, 2.09" (53mm) of precipitation is accumulated.

When it does not snow in Frederick?

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

How many hours of daylight does Frederick have in July?

In Frederick, Illinois, the average day length in July is 14h and 41min.

When are sunrise and sunset in July in Frederick?

In July, on the first day of the month, sunrise is at 5:36 am and sunset at 8:34 pm. On the last day of the month, in Frederick, sunrise is at 5:59 am and sunset at 8:16 pm CDT.

What are the months with the most sunshine in Frederick?

June and July, with an average of 10.2h of sunshine, are months with the most sunshine in Frederick, Illinois.

How long on average sun shines in July in Frederick?

In July, the average sunshine duration in Frederick is 10.2h.

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

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

What is the UV index reading in July in Frederick?

In July, the average daily maximum UV index in Frederick is 6. A UV Index value 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
Frederick, IL

Average temperature in July - Frederick, IL
  • 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 (32.7°F).

  • Average low temperature in July: 66.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in July
Frederick, IL

Average pressure in July - Frederick, 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
Frederick, IL

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

The windiest months (with the highest average wind speed) are January, February and April (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in July
Frederick, IL

Average humidity in July - Frederick, 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
Frederick, IL

Average rainfall in July - Frederick, IL
  • Average rainfall in July: 2.09"

The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is December (1.61").

Average rainfall days in July
Frederick, IL

Average rainfall days in July - Frederick, IL
  • Average rainfall days in July: 15 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.8 days).

Average snowfall in July
Frederick, IL

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

The month with the highest snowfall is January (4.21").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Frederick, IL

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

The month with the highest number of snowfall days is January (10.1 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
Frederick, IL

Average daylight in July / Average sunshine in July - Frederick, 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 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in July
Frederick, IL

Average sunshine days in July - Frederick, IL
  • Average sunshine days in July: 13.1 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in July
Frederick, IL

Average UV index in July - Frederick, 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
Frederick, IL

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

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 30).

Average visibility in July
Frederick, IL

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

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

Frederick, Illinois, USA

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