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
Temperature readings reach their annual highs in July, averaging 82.6°F (28.1°C) and a minimum average of 65.1°F (18.4°C).Heat index
July's mean heat index is calculated to be a tropical 89.6°F (32°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In July, the average relative humidity in Lewis is 80%.Rainfall
In Lewis, during July, the rain falls for 14 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, in Lewis, there are 118.7 rainfall days, and 20.79" (528mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Lewis.Daylight
In Lewis, the average length of the day in July is 14h and 49min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:57 pm. On the last day of July, in Lewis, Iowa, sunrise is at 6:15 am and sunset at 8:38 pm CDT.
Sunshine
July has the most sunshine of the year in Lewis, with an average of 10.4h of sunshine.UV index
The months with the highest UV index in Lewis are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 6 in July transforms into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What is the warmest month in Lewis?
How hot is July in Lewis?
What is the average humidity in July in Lewis?
How many days does it rain in July in Lewis?
When it does not snow in Lewis?
How many hours of daylight does Lewis have in July?
When are sunrise and sunset in July in Lewis?
What month has the most sunshine in Lewis?
How long on average sun shines in July in Lewis?
When is the highest UV index in Lewis?
What is the UV index reading in July in Lewis?
Average temperature in July
Lewis, IA
- Average high temperature in July: 82.6°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in July: 65.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in July
Lewis, IA
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in July
Lewis, IA
- Average wind speed in July: 7.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in July
Lewis, IA
- Average humidity in July: 80%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (69%).
Average rainfall in July
Lewis, IA
- Average rainfall in July: 2.05"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in July
Lewis, IA
- Average rainfall days in July: 14 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in July
Lewis, IA
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Lewis, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Lewis, IA
- Average daylight in July: 14h and 5min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in July
Lewis, IA
- Average sunshine days in July: 12.6 days
The month with the most sunshine days is December (21.2 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in July
Lewis, IA
- 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, October, November and December (UV index 2).
Average cloud cover in July
Lewis, IA
- Average cloud cover in July: 28
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in July
Lewis, IA
- 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).
Lewis, Iowa, USA
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