August weather forecastStorm Lake, IA
August
Weather in August
As the summer season advances, August carries forward the legacy of warmth in Storm Lake, Iowa. Though it starts to pull the reins on the soaring mercury levels slightly, the sun-filled days persist. Temperatures during August vary from 2.4" (61mm) to 3.11" (79mm), signaling a very subtle initiation of autumn’s approach. With September arriving next, expect a significant temperature drop along with the vibrant spectacle of fall colors. It's a great time to soak up the last bits of summer sun by the lake or in the local parks.Temperature
Storm Lake records an average high-temperature of a still moderately hot 79°F (26.1°C) as August arrives, nearly mirroring the previous month's climate. Throughout August, Storm Lake anticipates an average low-temperature of 61.2°F (16.2°C).Humidity
The average relative humidity in August in Storm Lake is 79%.Rainfall
In Storm Lake, Iowa, in August, during 14.3 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 135.1 rainfall days, and 26.73" (679mm) of precipitation is accumulated.Snowfall
In Storm Lake, Iowa, snow does not fall in June through September.Daylight
The average length of the day in August in Storm Lake is 13h and 52min.On the first day of August, sunrise is at 6:13 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 7:56 pm CDT.
Sunshine
In August, the average sunshine is 9.5h.UV index
In August, the average daily maximum UV index in Storm Lake is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 5 during August morphs into the following directions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Storm Lake, IA
- Average high temperature in August: 79°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 August: 61.2°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 August
Storm Lake, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
Storm Lake, IA
- Average wind speed in August: 7.7mph
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 August
Storm Lake, IA
- Average humidity in August: 79%
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 August
Storm Lake, IA
- Average rainfall in August: 2.72"
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 August
Storm Lake, IA
- Average rainfall days in August: 14.3 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 August
Storm Lake, IA
- Average snowfall in August: 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 August
Storm Lake, IA
- Average snowfall days in August: 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 August /
Average sunshine in August
Storm Lake, IA
- Average daylight in August: 13h 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 August: 9h 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 August
Storm Lake, IA
- Average sunshine days in August: 13.6 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 August
Storm Lake, IA
- Average UV index in August: 5
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 August
Storm Lake, IA
- Average cloud cover in August: 32
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 August
Storm Lake, IA
- Average visibility in August: 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).
