Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
During August, Postville observes a subtle ascent to a still warm 77.5°F (25.3°C) from July's 79°F (26.1°C) in the average high-temperature. Postville's temperature tends to fall to an average low of 59.5°F (15.3°C) during the nights of August.Humidity
The average relative humidity in August is 82%.Rainfall
In Postville, in August, during 12.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 131 rainfall days, and 27.91" (709mm) of precipitation is accumulated.Snowfall
In Postville, snow does not fall in June through September.Daylight
In Postville, the average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:27 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:42 pm CDT.
Sunshine
The month with the most sunshine is August, with an average of 9.8h of sunshine.UV index
In August, the average daily maximum UV index in Postville is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 5 during August translates into these guidelines:
Take precautions - Protection against sun damage is advised. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature in Postville?
What is the average humidity in August in Postville?
How many days does it rain in August in Postville?
When it does not snow in Postville?
What is the average length of the day in August in Postville?
When are sunrise and sunset in August in Postville?
What month has the most sunshine in Postville?
How long on average sun shines in August in Postville?
What is the UV index intensity in August in Postville?
Average temperature in August
Postville, IA
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in August
Postville, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Postville, IA
- Average wind speed in August: 7mph
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 (7mph).
Average humidity in August
Postville, IA
- Average humidity in August: 82%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Postville, IA
- Average rainfall in August: 2.01"
The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in August
Postville, IA
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in August
Postville, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Postville, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Postville, IA
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Postville, IA
- Average sunshine days in August: 16.4 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in August
Postville, 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, November and December (UV index 1).
Average cloud cover in August
Postville, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Postville, IA
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Postville, Iowa, USA
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