July weather forecast
Greenfield, IL

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Weather in July

July, the same as June, is another warm summer month in Greenfield, Illinois, with an average temperature ranging between min 67.3°F (19.6°C) and max 84.4°F (29.1°C).

Temperature

Greenfield reaches its highest average temperatures in July, measuring 84.4°F (29.1°C) at the peak and 67.3°F (19.6°C) at the lowest.

Heat index

July's average heat index is appraised at a very hot 95°F (35°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. 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 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

July is the most humid month in Greenfield, with an average relative humidity of 81%.

Rainfall

In July, in Greenfield, the rain falls for 13.6 days. Throughout July, 1.5" (38mm) of precipitation is accumulated. In Greenfield, Illinois, during the entire year, the rain falls for 120.6 days and collects up to 14.17" (360mm) of precipitation.

Snowfall

In Greenfield, snow does not fall in April through October.

Daylight

In Greenfield, the average length of the day in July is 14h and 37min.
On the first day of July in Greenfield, sunrise is at 5:38 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:13 pm CDT.

Sunshine

The months with the most sunshine are June and July, with an average of 10.4h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Greenfield, Illinois. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Greenfield?

Greenfield's July weather, with an average high temperature of 84.4°F (29.1°C) and an average low temperature of 67.3°F (19.6°C), tends to be the warmest of the year.

Is it hot in Greenfield during July?

The average high-temperature, in July, in Greenfield, is 84.4°F (29.1°C), while the average low-temperature is 67.3°F (19.6°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is appraised at 95°F (35°C).

What is the most humid month in Greenfield?

With an average relative humidity of 81%, July is the most humid month in Greenfield, Illinois.

What is the average humidity in July in Greenfield?

In July, the average relative humidity in Greenfield is 81%.

How much does it rain in Greenfield in July?

In Greenfield, during July, the rain falls for 13.6 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Greenfield?

April through October are months without snowfall.

How many hours of daylight does Greenfield have in July?

In July, the average day length in Greenfield, Illinois, is 14h and 37min.

What time are sunrise and sunset in July in Greenfield?

In July, on the first day of the month, sunrise is at 5:38 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:13 pm CDT.

What is the month with the most sunshine in Greenfield?

June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Greenfield, Illinois.

How long on average sun shines in July in Greenfield?

In July, the average sunshine duration in Greenfield, Illinois, is 10.4h.

When is the highest UV index in Greenfield?

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

How high is the UV index in July in Greenfield?

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

Average temperature in July - Greenfield, IL
  • Average high temperature in July: 84.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in July: 67.3°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in July
Greenfield, IL

Average pressure in July - Greenfield, IL
  • Average pressure in July: 29.97"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
Greenfield, IL

Average wind speed in July - Greenfield, IL
  • Average wind speed in July: 5.8mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

Average humidity in July
Greenfield, IL

Average humidity in July - Greenfield, IL
  • Average humidity in July: 81%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Greenfield, IL

Average rainfall in July - Greenfield, IL
  • Average rainfall in July: 1.5"

The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is November (0.67").

Average rainfall days in July
Greenfield, IL

Average rainfall days in July - Greenfield, IL
  • Average rainfall days in July: 13.6 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in July
Greenfield, IL

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

The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Greenfield, IL

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

The month with the highest number of snowfall days is January (6 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
Greenfield, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in July
Greenfield, IL

Average sunshine days in July - Greenfield, IL
  • Average sunshine days in July: 12.5 days

The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is June (12.4 days).

Average UV index in July
Greenfield, IL

Average UV index in July - Greenfield, 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
Greenfield, IL

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

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 28).

Average visibility in July
Greenfield, IL

Average visibility in July - Greenfield, 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).

Greenfield, Illinois, USA

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