July weather forecastRock Valley, IA
July
Weather in July
July, like June, in Rock Valley, Iowa, is another warm summer month, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 63.5°F (17.5°C).Temperature
July, with an average high of 81.9°F (27.7°C) and a low of 63.5°F (17.5°C), signifies the warmest month of the year.Heat index
During July, the heat index is evaluated at a hot 87.8°F (31°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
The average relative humidity in July is 77%.Rainfall
In July, the rain falls for 14.6 days. Throughout July, 2.17" (55mm) of precipitation is accumulated. In Rock Valley, during the entire year, the rain falls for 130 days and collects up to 24.09" (612mm) of precipitation.Snowfall
In Rock Valley, snow does not fall in June through September.Daylight
In July, the average length of the day in Rock Valley is 15h and 0min.On the first day of July in Rock Valley, sunrise is at 5:49 am and sunset at 9:08 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:47 pm CDT.
Sunshine
With an average of 10.6h of sunshine, July has the most sunshine of the year in Rock Valley, Iowa.UV index
The months with the highest UV index in Rock Valley are June and July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 6 during July morphs into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Rock Valley, IA
- Average high temperature in July: 81.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in July: 63.5°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in July
Rock Valley, IA
- Average pressure in July: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in July
Rock Valley, IA
- Average wind speed in July: 7.8mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in July
Rock Valley, IA
- Average humidity in July: 77%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (67%).
Average rainfall in July
Rock Valley, IA
- Average rainfall in July: 2.17"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in July
Rock Valley, IA
- Average rainfall days in July: 14.6 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in July
Rock Valley, IA
- Average snowfall in July: 0"
The month with the highest snowfall is February (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Rock Valley, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Rock Valley, IA
- Average daylight in July: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in July: 10h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in July
Rock Valley, IA
- Average sunshine days in July: 12.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in July
Rock Valley, IA
- 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, February, October, November and December (UV index 2).
Average cloud cover in July
Rock Valley, IA
- Average cloud cover in July: 27
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in July
Rock Valley, IA
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
