August weather forecastBig Mound, IA
August
Weather in August
The last month of the summer, August, is another warm month in Big Mound, Iowa, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 82.6°F (28.1°C).Temperature
Big Mound sees the arrival of August with an average high-temperature of a still moderately hot 82.6°F (28.1°C), indicating a subtle variation from July. In Big Mound, the nighttime temperature averages to a refreshing 63.7°F (17.6°C) during August.Heat index
For most parts of August, the heat index is calculated to be a hot 89.6°F (32°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.The standards for the heat index are set for locations in shade and under light breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
The average relative humidity in August in Big Mound is 78%.Rainfall
In Big Mound, in August, it is raining for 13.5 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, there are 145.2 rainfall days, and 28.98" (736mm) of precipitation is accumulated.Snowfall
In Big Mound, snow does not fall in May through September.Daylight
In Big Mound, the average length of the day in August is 13h and 45min.On the first day of the month, sunrise is at 6:04 am and sunset at 8:22 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:40 pm CDT.
Sunshine
In Big Mound, the average sunshine in August is 10h.UV index
The months with the highest UV index in Big Mound are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 6 in August translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Big Mound, IA
- Average high temperature in August: 82.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in August
Big Mound, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Big Mound, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in August
Big Mound, IA
- Average humidity in August: 78%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Big Mound, IA
- Average rainfall in August: 2.17"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is December (1.38").
Average rainfall days in August
Big Mound, IA
- Average rainfall days in August: 13.5 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in August
Big Mound, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Big Mound, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Big Mound, IA
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Big Mound, IA
- Average sunshine days in August: 14.6 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in August
Big Mound, IA
- Average UV index in August: 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, November and December (UV index 2).
Average cloud cover in August
Big Mound, IA
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in August
Big Mound, IA
- Average visibility in August: 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).
