August weather forecastHiawatha, IA
August
Weather in August
The last month of the summer, August, is another warm month in Hiawatha, Iowa, with an average temperature fluctuating between 61.3°F (16.3°C) and 79.2°F (26.2°C).Temperature
The advent of August brings an average high-temperature of a still moderately hot 79.2°F (26.2°C), exhibiting minor difference from the previous month. During August, an average low-temperature of 61.3°F (16.3°C) is observed in Hiawatha.Humidity
The average relative humidity in August is 81%.Rainfall
In Hiawatha, in August, during 11.9 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, in Hiawatha, there are 138.6 rainfall days, and 27.8" (706mm) of precipitation is accumulated.Snowfall
In Hiawatha, snow does not fall in June through September.Daylight
The average length of the day in August in Hiawatha, Iowa, is 13h and 49min.On the first day of August in Hiawatha, sunrise is at 6:00 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:41 pm CDT.
Sunshine
In August, the average sunshine is 9.9h.UV index
In Hiawatha, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In August, the UV index of 5 transforms into the following advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Hiawatha, IA
- Average high temperature in August: 79.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in August: 61.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in August
Hiawatha, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Hiawatha, IA
- Average wind speed in August: 7mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in August
Hiawatha, IA
- Average humidity in August: 81%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Hiawatha, IA
- Average rainfall in August: 1.69"
The wettest month (with the highest rainfall) is May (4.37").
The driest months (with the least rainfall) are January and February (1.18").
Average rainfall days in August
Hiawatha, IA
- Average rainfall days in August: 11.9 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in August
Hiawatha, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Hiawatha, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Hiawatha, IA
- Average daylight in August: 13h and 48min
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 12min).
- Average sunshine in August: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Hiawatha, IA
- Average sunshine days in August: 16.6 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in August
Hiawatha, IA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Hiawatha, IA
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Hiawatha, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
