July weather forecastWilliamson, IA
July
Weather in July
July, like June, in Williamson, Iowa, is a moderately hot summer month, with an average temperature fluctuating between 83.1°F (28.4°C) and 65.7°F (18.7°C).Temperature
July, with its high-temperature average of 83.1°F (28.4°C) and a low-temperature average of 65.7°F (18.7°C), is the warmest month.Heat index
The average heat index in July is computed to be a tropical 91.4°F (33°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In Williamson, the average relative humidity in July is 81%.Rainfall
In July, the rain falls for 13.8 days. Throughout July, 2.17" (55mm) of precipitation is accumulated. In Williamson, during the entire year, the rain falls for 131.1 days and collects up to 25.71" (653mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Williamson, the average length of the day in July is 14h and 47min.On the first day of the month, sunrise is at 5:44 am and sunset at 8:49 pm. On the last day of July, sunrise is at 6:08 am and sunset at 8:30 pm CDT.
Sunshine
With an average of 10.2h of sunshine, July has the most sunshine of the year in Williamson.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in July interprets into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Williamson, IA
- 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 January (29.3°F).
- Average low temperature in July: 65.7°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in July
Williamson, IA
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in July
Williamson, IA
- Average wind speed in July: 7.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in July
Williamson, IA
- Average humidity in July: 81%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Williamson, IA
- Average rainfall in July: 2.17"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in July
Williamson, IA
- Average rainfall days in July: 13.8 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in July
Williamson, IA
- Average snowfall in July: 0"
The month with the highest snowfall is February (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Williamson, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Williamson, IA
- 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 12min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in July
Williamson, IA
- Average sunshine days in July: 14.1 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in July
Williamson, IA
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in July
Williamson, IA
- Average cloud cover in July: 30
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in July
Williamson, IA
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
