July weather forecastCastleton, IL
July
Weather in July
July, like June, in Castleton, Illinois, is another warm summer month, with an average temperature ranging between max 81.1°F (27.3°C) and min 64.8°F (18.2°C).Temperature
In Castleton, the peak average temperatures are observed in July, with a high of 81.1°F (27.3°C) and a low of 64.8°F (18.2°C).Heat index
The average heat index in July is calculated to be a hot 87.8°F (31°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
The most humid month is July, with an average relative humidity of 84%.Rainfall
In Castleton, in July, it is raining for 14.2 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 116.8 rainfall days, and 13.98" (355mm) of precipitation is accumulated.Snowfall
In Castleton, snow does not fall in May through September.Daylight
In Castleton, the average length of the day in July is 14h and 47min.On the first day of the month, sunrise is at 5:30 am and sunset at 8:35 pm. On the last day of July, in Castleton, sunrise is at 5:54 am and sunset at 8:16 pm CDT.
Sunshine
The months with the most sunshine in Castleton are June and July, with an average of 10h of sunshine.UV index
June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 6 during July translates into these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Castleton, IL
- Average high temperature in July: 81.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in July: 64.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in July
Castleton, IL
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Castleton, IL
- Average wind speed in July: 6.7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in July
Castleton, 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 (72%).
Average rainfall in July
Castleton, IL
- Average rainfall in July: 1.34"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in July
Castleton, IL
- Average rainfall days in July: 14.2 days
The month with the highest number of rainy days is May (15.2 days).
The months with the least rainy days are January and February (4.2 days).
Average snowfall in July
Castleton, IL
- Average snowfall in July: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Castleton, IL
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (8.6 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
Castleton, IL
- Average daylight in July: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
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: 3h and 54min).
Average sunshine days in July
Castleton, IL
- Average sunshine days in July: 13.5 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in July
Castleton, IL
- Average UV index in July: 6
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in July
Castleton, IL
- Average cloud cover in July: 32
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in July
Castleton, IL
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
