Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July, on average, is the warmest month, registering a high temperature of 83.1°F (28.4°C) and a low of 55.4°F (13°C).Heat index
The average heat index in July is computed to be 82.4°F (28°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
The months with the lowest humidity in Rock Island are July and August, with an average relative humidity of 44%.Rainfall
The months with the least rainfall are July and August Rain falls for 4.2 days and accumulates 0.24" (6mm) of rain.Snowfall
In Rock Island, snow does not fall in May through August and October.Daylight
In July, the average length of the day is 15h and 29min.On the first day of July in Rock Island, sunrise is at 5:08 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:35 pm PDT.
Sunshine
The average sunshine in July in Rock Island is 12h.UV index
July is the month with the highest UV index, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 6 during July translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What is the warmest month in Rock Island?
How hot is it in Rock Island in July?
What are the least humid months in Rock Island?
What is the average humidity in July in Rock Island?
What is the driest month in Rock Island?
How many days does it rain in July in Rock Island?
When it does not snow in Rock Island?
What is the average length of the day in July in Rock Island?
What time are sunrise and sunset in July in Rock Island?
How long on average sun shines in July in Rock Island?
When is the highest UV index in Rock Island?
What is the UV index reading in July in Rock Island?
Average temperature in July
Rock Island, WA
- Average high temperature in July: 83.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in July: 55.4°F
The month with the highest average low temperature is August (56.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in July
Rock Island, WA
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in July
Rock Island, WA
- Average wind speed in July: 6.3mph
The windiest month (with the highest average wind speed) is June (6.5mph).
The calmest month (with the lowest average wind speed) is December (3.7mph).
Average humidity in July
Rock Island, WA
- Average humidity in July: 44%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are July and August (44%).
Average rainfall in July
Rock Island, WA
- Average rainfall in July: 0.24"
The wettest months (with the highest rainfall) are January and December (1.57").
The driest months (with the least rainfall) are July and August (0.24").
Average rainfall days in July
Rock Island, WA
- Average rainfall days in July: 4.2 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is August (3.8 days).
Average snowfall in July
Rock Island, WA
- Average snowfall in July: 0"
The month with the highest snowfall is December (5.98").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in July
Rock Island, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is December (9.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in July /
Average sunshine in July
Rock Island, WA
- Average daylight in July: 15h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in July: 12h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in July
Rock Island, WA
- Average sunshine days in July: 25.5 days
The month with the most sunshine days is July (25.5 days).
The month with the least sunshine days is February (12.6 days).
Average UV index in July
Rock Island, WA
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Rock Island, WA
- Average cloud cover in July: 11
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in July
Rock Island, WA
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
Rock Island, Washington, USA
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