July weather forecastStorm Lake, IA

July

Weather in July

As the midpoint of the year, July typifies summer days in Storm Lake, Iowa. The sun, at its zenith, ensures warm, longer days and short nights. July witnesses the peak of summer with temperatures hitting between 2.52" (64mm) to 3.19" (81mm). With August around the corner, it’s worthy to note that the pinnacle of the sunny season gradually starts to wane, yet continues to maintain the warmth. Familiar sights include locals cooling off by the lake and ice cream vendors finding the busiest time of their year.

Temperature

July stands out as Storm Lake's warmest month, with temperatures ranging between an average high of 81.3°F (27.4°C) and a low of 64°F (17.8°C).

Heat index

In July, the average heat index is estimated at a hot 87.8°F (31°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In July, the average relative humidity is 80%.

Rainfall

In Storm Lake, in July, it is raining for 14.8 days, with typically 2.24" (57mm) of accumulated precipitation. In Storm Lake, during the entire year, the rain falls for 135.1 days and collects up to 26.73" (679mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in July in Storm Lake is 14h and 56min.
On the first day of July, sunrise is at 5:47 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:41 pm CDT.

Sunshine

The month with the most sunshine is July, with an average of 10.5h of sunshine.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Storm Lake. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In July, a regular UV index of 6 translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

July is the warmest month in Storm Lake, Iowa, with an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64°F (17.8°C).

Storm Lake in July has an average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64°F (17.8°C). In July, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 87.8°F (31°C).

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

In Storm Lake, during July, the rain falls for 14.8 days and regularly aggregates up to 2.24" (57mm) of precipitation.

In Storm Lake, Iowa, snow does not fall in June through September.

In July, the average day length in Storm Lake is 14h and 56min.

In July, on the first day of the month, sunrise is at 5:47 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:41 pm CDT.

July has the most sunshine of the year in Storm Lake, with an average of 10.5h of sunshine.

The average sunshine duration in July in Storm Lake is 10.5h.

The months with the highest UV index in Storm Lake, Iowa, are June and July, with an average maximum UV index of 6.

In July, the average daily maximum UV index in Storm Lake, Iowa, is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Storm Lake, IA

  • Average high temperature in July: 81.3°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (24.6°F).

  • Average low temperature in July: 64°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

Average pressure in July
Storm Lake, 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
Storm Lake, IA

  • Average wind speed in July: 7.5mph

The windiest months (with the highest average wind speed) are January and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in July
Storm Lake, IA

  • Average humidity in July: 80%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).

Average rainfall in July
Storm Lake, IA

  • Average rainfall in July: 2.24"

The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is January (0.91").

Average rainfall days in July
Storm Lake, IA

  • Average rainfall days in July: 14.8 days

The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in July
Storm Lake, IA

  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Storm Lake, IA

  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Storm Lake, IA

  • Average daylight in July: 14h and 54min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in July: 10h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in July
Storm Lake, IA

  • Average sunshine days in July: 12.9 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (8.1 days).

Average UV index in July
Storm Lake, IA

  • Average UV index in July: 6

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in July
Storm Lake, IA

  • Average cloud cover in July: 28

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in July
Storm Lake, IA

  • Average visibility in July: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).