August weather forecastGarwin, IA
August
Weather in August
August, the last month of the summer in Garwin, is another warm month, with an average temperature varying between 61.5°F (16.4°C) and 79.5°F (26.4°C).Temperature
Garwin's August average high-temperature settles at a still warm 79.5°F (26.4°C), showing a near match with the preceding month. An average temperature of 61.5°F (16.4°C) is recorded during the nights in August.Humidity
In Garwin, the average relative humidity in August is 81%.Rainfall
In Garwin, during August, the rain falls for 12.8 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, in Garwin, there are 133.1 rainfall days, and 27.76" (705mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Garwin.Daylight
The average length of the day in August is 13h and 50min.On the first day of August in Garwin, sunrise is at 6:04 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 7:45 pm CDT.
Sunshine
The average sunshine in August is 9.6h.UV index
In Garwin, Iowa, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during August translates into these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Garwin, IA
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in August
Garwin, 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 (29.89"Hg).
Average wind speed in August
Garwin, IA
- Average wind speed in August: 7.1mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in August
Garwin, IA
- Average humidity in August: 81%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Garwin, IA
- Average rainfall in August: 2.2"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in August
Garwin, IA
- Average rainfall days in August: 12.8 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in August
Garwin, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Garwin, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Garwin, 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 36min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Garwin, IA
- Average sunshine days in August: 16 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in August
Garwin, 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, February, October, November and December (UV index 2).
Average cloud cover in August
Garwin, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in August
Garwin, IA
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).





