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
Greencastle starts August with an average high-temperature of a still warm 81.1°F (27.3°C), a minor shift from July's 81.7°F (27.6°C). Greencastle records an average nighttime low-temperature of 63.1°F (17.3°C) throughout August.Heat index
The heat index in August is calculated to be a hot 87.8°F (31°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Understand that the heat index values take into account shaded locations and mild winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In Greencastle, the average relative humidity in August is 82%.Rainfall
In Greencastle, in August, during 10.2 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Greencastle, during the entire year, the rain falls for 118.9 days and collects up to 12.13" (308mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In August, the average length of the day is 13h and 41min.On the first day of the month, sunrise is at 6:47 am and sunset at 9:00 pm. On the last day of August, in Greencastle, sunrise is at 7:15 am and sunset at 8:19 pm EDT.
Sunshine
In Greencastle, Indiana, the average sunshine in August is 9.4h.UV index
The months with the highest UV index in Greencastle are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in August transforms into the following instructions:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are the temperatures in Greencastle in August?
What is the average humidity in August in Greencastle?
How much does it rain in Greencastle in August?
When it does not snow in Greencastle?
How many hours of daylight does Greencastle have in August?
When is the sunrise / sunset in August in Greencastle?
How many hours of sunshine does Greencastle have in August?
What are the months with the highest UV index in Greencastle?
What is the UV index intensity in August in Greencastle?
Average temperature in August
Greencastle, IN
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in August: 63.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in August
Greencastle, IN
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Greencastle, IN
- Average wind speed in August: 5.9mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).
Average humidity in August
Greencastle, IN
- Average humidity in August: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Greencastle, IN
- Average rainfall in August: 0.94"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in August
Greencastle, IN
- Average rainfall days in August: 10.2 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in August
Greencastle, IN
- Average snowfall in August: 0"
The month with the highest snowfall is December (1.22").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Greencastle, IN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Greencastle, IN
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in August
Greencastle, IN
- Average sunshine days in August: 17.4 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in August
Greencastle, IN
- 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
Greencastle, IN
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in August
Greencastle, IN
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Greencastle, Indiana, USA
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