July weather forecastGreenfield, IL
July
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 14h and 36min
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 24min
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: 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: 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: 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: 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).
