July weather forecast
Colusa, IL

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Weather in July

July, the same as June, is another warm summer month in Colusa, Illinois, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 82.6°F (28.1°C).

Temperature

July stands out as Colusa's warmest month, with an average high-temperature of 82.6°F (28.1°C) and a low-temperature of 66.2°F (19°C).

Heat index

July's mean heat index is appraised at a tropical 91.4°F (33°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

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

Rainfall

In Colusa, during July, the rain falls for 15 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 127.6 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Colusa, the average length of the day in July is 14h and 44min.
On the first day of the month, sunrise is at 5:38 am and sunset at 8:39 pm. On the last day of July, sunrise is at 6:01 am and sunset at 8:20 pm CDT.

Sunshine

The months with the most sunshine are June and July, with an average of 10h 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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 6 during July translates into these guidelines:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

With its average high temperature of 82.6°F (28.1°C) and a low of 66.2°F (19°C), July is regarded as the warmest month.

How hot does it get in July?

The high-temperature during July is 82.6°F (28.1°C) and the low-temperature is 66.2°F (19°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 91.4°F (33°C).

What is the most humid month?

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

What is the average humidity in July?

In July, the average relative humidity is 83%.

How much does it rain in July?

In Colusa, Illinois, during July, the rain falls for 15 days and regularly aggregates up to 2.13" (54mm) of precipitation.

When it does not snow in Colusa?

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

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

The average day length in July is 14h and 44min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:38 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:20 pm CDT.

What are the months with the most sunshine?

The months with the most sunshine are June and July, with an average of 10h of sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 10h.

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.

How high is the UV index in July in Colusa?

In July, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from 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
Colusa, IL

Average temperature in July - Colusa, IL
  • Average high temperature in July: 82.6°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in July: 66.2°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in July
Colusa, IL

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

Average wind speed in July
Colusa, IL

Average wind speed in July - Colusa, IL
  • Average wind speed in July: 6.7mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in July
Colusa, IL

Average humidity in July - Colusa, 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%).

Average rainfall in July
Colusa, IL

Average rainfall in July - Colusa, IL
  • Average rainfall in July: 2.13"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.83").

Average rainfall days in July
Colusa, IL

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

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).

Average snowfall in July
Colusa, IL

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

The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Colusa, IL

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

The month with the highest number of snowfall days is January (8.5 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
Colusa, IL

Average daylight in July / Average sunshine in July - Colusa, 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 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in July
Colusa, IL

Average sunshine days in July - Colusa, IL
  • Average sunshine days in July: 14.4 days

The month with the most sunshine days is December (20 days).
The months with the least sunshine days are May and June (11.8 days).

Average UV index in July
Colusa, IL

Average UV index in July - Colusa, 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
Colusa, IL

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

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in July
Colusa, IL

Average visibility in July - Colusa, 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).

Colusa, Illinois, USA

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