August weather forecastIrwin, IA
August
Weather in August
The last month of the summer, August, is another warm month in Irwin, Iowa, with temperature in the range of an average low of 62.1°F (16.7°C) and an average high of 80.2°F (26.8°C).Temperature
With the onset of August, a modest change to a still warm 80.2°F (26.8°C) from July's 82.6°F (28.1°C) is noted in high-temperature. Irwin registers a consistent average low-temperature of 62.1°F (16.7°C) during August.Humidity
In Irwin, the average relative humidity in August is 79%.Rainfall
In August, the rain falls for 12.3 days. Throughout August, 1.93" (49mm) of precipitation is accumulated. Throughout the year, in Irwin, there are 113.5 rainfall days, and 15.71" (399mm) of precipitation is accumulated.Snowfall
In Irwin, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 49min.On the first day of August, sunrise is at 6:15 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 7:55 pm CDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 6 in August translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Irwin, IA
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in August: 62.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in August
Irwin, 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
Irwin, IA
- Average wind speed in August: 7.4mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in August
Irwin, IA
- Average humidity in August: 79%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (68%).
Average rainfall in August
Irwin, IA
- Average rainfall in August: 1.93"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in August
Irwin, IA
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in August
Irwin, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Irwin, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Irwin, 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: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in August
Irwin, IA
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in August
Irwin, 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, October, November and December (UV index 2).
Average cloud cover in August
Irwin, IA
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in August
Irwin, 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).





