August weather forecastDelmar, IA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Delmar, Iowa, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 61.3°F (16.3°C).Temperature
Delmar indicates an average high-temperature of a still moderately hot 79.3°F (26.3°C) in August, showing minor variation from July's 80.2°F (26.8°C). Throughout August, Delmar records an average temperature of 61.3°F (16.3°C) at night.Humidity
In Delmar, the average relative humidity in August is 81%.Rainfall
In Delmar, in August, it is raining for 13.8 days, with typically 2.01" (51mm) of accumulated precipitation. In Delmar, Iowa, during the entire year, the rain falls for 143.3 days and collects up to 29.76" (756mm) of precipitation.Snowfall
In Delmar, Iowa, snow does not fall in May through September.Daylight
The average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:20 pm. On the last day of August, sunrise is at 6:27 am and sunset at 7:37 pm CDT.
Sunshine
The average sunshine in August is 9.8h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 5 during August translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Delmar, IA
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in August: 61.3°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 (13.3°F).
Average pressure in August
Delmar, IA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Delmar, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Delmar, 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 (74%).
Average rainfall in August
Delmar, IA
- Average rainfall in August: 2.01"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in August
Delmar, IA
- Average rainfall days in August: 13.8 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in August
Delmar, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Delmar, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11 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
Delmar, 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 48min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in August
Delmar, IA
- Average sunshine days in August: 15.2 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in August
Delmar, IA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Delmar, IA
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in August
Delmar, 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).





