July weather forecastMarne, IA

July

Weather in July

July, like June, in Marne, Iowa, is a moderately hot summer month, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 82.6°F (28.1°C).

Temperature

With average high temperatures of 82.6°F (28.1°C) and lows of 65.1°F (18.4°C), July is the warmest month.

Heat index

Throughout July, the heat index is evaluated at a hot 89.6°F (32°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', quantifies the warmth felt when relative humidity is considered. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In July, the average relative humidity in Marne, Iowa, is 80%.

Rainfall

In Marne, in July, it is raining for 14 days, with typically 2.05" (52mm) of accumulated precipitation. In Marne, Iowa, during the entire year, the rain falls for 118.7 days and collects up to 20.79" (528mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In July, the average length of the day in Marne, Iowa, is 14h and 49min.
On the first day of July, sunrise is at 5:50 am and sunset at 8:58 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:38 pm CDT.

Sunshine

The month with the most sunshine is July, with an average of 10.4h of sunshine.

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 health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Temperature records in Marne, Iowa, mark July as the warmest month, with highs averaging 82.6°F (28.1°C) and lows at 65.1°F (18.4°C).

The high-temperature, in July, in Marne, is 82.6°F (28.1°C), while the low-temperature averages to 65.1°F (18.4°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 89.6°F (32°C).

In July, the average relative humidity is 80%.

In Marne, Iowa, during July, the rain falls for 14 days and regularly aggregates up to 2.05" (52mm) of precipitation.

June through September are months without snowfall in Marne, Iowa.

In July, the average day length in Marne, Iowa, is 14h and 49min.

In July, on the first day of the month, sunrise is at 5:50 am and sunset at 8:58 pm. On the last day of the month, in Marne, Iowa, sunrise is at 6:15 am and sunset at 8:38 pm CDT.

With an average of 10.4h of sunshine, July has the most sunshine of the year in Marne, Iowa.

In Marne, the average sunshine duration in July is 10.4h.

June through August, with an average maximum UV index of 6, are months with the highest UV index.

In Marne, Iowa, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J July A S O N D

Jun

July

Aug

Average high temperature

79.9°F

82.6°F

81.1°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9mph

7.6mph

7.8mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

16.4

12.8

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

10.8

12.6

14.9

Average UV index

Average cloud cover

Average visibility

Average temperature in July
Marne, 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
Marne, 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
Marne, 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
Marne, 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
Marne, 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
Marne, 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
Marne, 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
Marne, 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
Marne, 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 12min).

Average sunshine in July: 10h and 24min

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
Marne, 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
Marne, 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
Marne, 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
Marne, 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).