July weather forecastMarengo, IA
July
Weather in July
July, the same as June, is another warm summer month in Marengo, Iowa, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 81°F (27.2°C).Temperature
The warmest period tends to be July, when average temperatures fluctuate between a high of 81°F (27.2°C) and a low of 64.8°F (18.2°C).Heat index
The heat index value during July is evaluated at a tropical 87.8°F (31°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.Consider that heat index readings are for situations in the shade and light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
The months with the highest humidity in Marengo are January, February and July, with an average relative humidity of 84%.Rainfall
In Marengo, during July, the rain falls for 16.5 days and regularly aggregates up to 3.23" (82mm) of precipitation. Throughout the year, in Marengo, Iowa, there are 141.8 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
In Marengo, snow does not fall in June through September.Daylight
In July, the average length of the day in Marengo, Iowa, is 14h and 52min.On the first day of July in Marengo, sunrise is at 5:37 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:27 pm CDT.
Sunshine
The month with the most sunshine is July, with an average of 9.9h of sunshine.UV index
The months with the highest UV index in Marengo are June and July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 6 during July leads to these instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Marengo, IA
- Average high temperature in July: 81°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27°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 (14.4°F).
Average pressure in July
Marengo, IA
- Average pressure in July: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in July
Marengo, IA
- Average wind speed in July: 7mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in July
Marengo, IA
- Average humidity in July: 84%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in July
Marengo, IA
- Average rainfall in July: 3.23"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in July
Marengo, IA
- Average rainfall days in July: 16.5 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in July
Marengo, IA
- Average snowfall in July: 0"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Marengo, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Marengo, IA
- Average daylight in July: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 9h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in July
Marengo, IA
- Average sunshine days in July: 10.4 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in July
Marengo, IA
- Average UV index in July: 6
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in July
Marengo, IA
- Average cloud cover in July: 33
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in July
Marengo, IA
- Average visibility in July: 5mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
