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
The onset of August manifests an average high-temperature of a still tropical 86°F (30°C), demonstrating a minor variation from the preceding month. During the nights in August, Forest Grove experiences a consistent average temperature of 67.1°F (19.5°C).Heat index
In August, the heat index is estimated at a sweltering 98.6°F (37°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Realize that the values for the heat index are set for shaded places and light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In August, the average relative humidity is 76%.Rainfall
In Forest Grove, during August, the rain falls for 17.8 days and regularly aggregates up to 3.58" (91mm) of precipitation. Throughout the year, there are 174.6 rainfall days, and 37.68" (957mm) of precipitation is accumulated.Snowfall
In Forest Grove, snow does not fall in May through October.Daylight
The average length of the day in August is 13h and 30min.On the first day of the month, sunrise is at 5:54 am and sunset at 7:52 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:16 pm CDT.
Sunshine
In Forest Grove, the average sunshine in August is 10.2h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 6 in August leads to these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
What are the months with the highest UV index?
What is the UV index reading in August?
Average temperature in August
Forest Grove, TN
- Average high temperature in August: 86°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (43°F).
- Average low temperature in August: 67.1°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in August
Forest Grove, TN
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in August
Forest Grove, TN
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in August
Forest Grove, TN
- Average humidity in August: 76%
The months with the highest relative humidity are March, May and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Forest Grove, TN
- Average rainfall in August: 3.58"
The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in August
Forest Grove, TN
- Average rainfall days in August: 17.8 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in August
Forest Grove, TN
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Forest Grove, TN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Forest Grove, TN
- Average daylight in August: 13h and 3min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 10h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in August
Forest Grove, TN
- Average sunshine days in August: 11.4 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in August
Forest Grove, TN
- Average UV index in August: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in August
Forest Grove, TN
- Average cloud cover in August: 31
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in August
Forest Grove, TN
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Forest Grove, Tennessee, USA
Weather forecast for your location
2. Allow the app to use your location