August weather forecastBarnum, IA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Barnum, Iowa, with temperature in the range of an average low of 61.2°F (16.2°C) and an average high of 79.2°F (26.2°C).Temperature
Entering August, the average high-temperature is recorded at a still warm 79.2°F (26.2°C), exhibiting a minimal shift from July's 81°F (27.2°C). Barnum records a consistent low-temperature of 61.2°F (16.2°C) during August nights.Humidity
In August, the average relative humidity is 81%.Rainfall
In Barnum, in August, during 10.1 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, there are 84.6 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Snowfall
In Barnum, snow does not fall in May through September.Daylight
The average length of the day in August is 13h and 51min.On the first day of August, sunrise is at 6:10 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 7:52 pm CDT.
Sunshine
In August, the average sunshine is 9.5h.UV index
In Barnum, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 5 in August transforms into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Barnum, IA
- Average high temperature in August: 79.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in August: 61.2°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in August
Barnum, 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 (29.88"Hg).
Average wind speed in August
Barnum, IA
- Average wind speed in August: 7.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in August
Barnum, IA
- Average humidity in August: 81%
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
Barnum, IA
- Average rainfall in August: 0.79"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in August
Barnum, IA
- Average rainfall days in August: 10.1 days
The month with the highest number of rainy days is June (12 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in August
Barnum, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Barnum, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Barnum, IA
- Average daylight in August: 13h 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 6min).
- Average sunshine in August: 9h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in August
Barnum, IA
- Average sunshine days in August: 18.8 days
The month with the most sunshine days is December (24.3 days).
The month with the least sunshine days is June (15.5 days).
Average UV index in August
Barnum, 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
Barnum, IA
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in August
Barnum, IA
- Average visibility in August: 6mi
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).
