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
Gretna's shift into August sets the average high-temperature at a still warm 82.9°F (28.3°C), a figure that deviates only slightly from July's 84.7°F (29.3°C). Gretna records an average low-temperature of 63.5°F (17.5°C) throughout the month of August.Heat index
August's mean heat index is computed to be a tropical 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In Gretna, Nebraska, the average relative humidity in August is 76%.Rainfall
In Gretna, in August, during 14.1 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Gretna, during the entire year, the rain falls for 120.7 days and collects up to 22.87" (581mm) of precipitation.Snowfall
In Gretna, Nebraska, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 46min.On the first day of August in Gretna, Nebraska, sunrise is at 6:21 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 7:58 pm CDT.
Sunshine
In August, the average sunshine is 10h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 6 in August suggests the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Gretna in August?
What is the average humidity in August in Gretna?
How much does it rain in Gretna in August?
When it does not snow in Gretna?
What is the average length of the day in August in Gretna?
When is the sunrise / sunset in August in Gretna?
How long on average sun shines in August in Gretna?
What is the month with the highest UV index in Gretna?
What is the UV index reading in August in Gretna?
Average temperature in August
Gretna, NE
- Average high temperature in August: 82.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in August: 63.5°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in August
Gretna, NE
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in August
Gretna, NE
- Average wind speed in August: 7.4mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in August
Gretna, NE
- Average humidity in August: 76%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (65%).
Average rainfall in August
Gretna, NE
- Average rainfall in August: 2.64"
The wettest month (with the highest rainfall) is June (3.7").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in August
Gretna, NE
- Average rainfall days in August: 14.1 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in August
Gretna, NE
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Gretna, NE
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Gretna, NE
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in August
Gretna, NE
- Average sunshine days in August: 14.1 days
The month with the most sunshine days is November (22.2 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in August
Gretna, NE
- 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, November and December (UV index 2).
Average cloud cover in August
Gretna, NE
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in August
Gretna, NE
- 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).
Gretna, Nebraska, USA
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