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
July's transformation into August witnesses an average high-temperature of a still warm 79.7°F (26.5°C), noting a minor change from the preceding month. During the August nights, an average temperature of 62.8°F (17.1°C) is observed.Humidity
In August, the average relative humidity is 82%.Rainfall
In August, the rain falls for 16.8 days. Throughout August, 2.52" (64mm) of precipitation is accumulated. Throughout the year, in Jamestown, there are 164.1 rainfall days, and 31.61" (803mm) of precipitation is accumulated.Snowfall
In Jamestown, snow does not fall in May through September.Daylight
In Jamestown, the average length of the day in August is 13h and 42min.On the first day of August, sunrise is at 6:45 am and sunset at 8:59 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 8:19 pm EDT.
Sunshine
In Jamestown, the average sunshine in August is 9.2h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 during August translates into the following guidance:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Jamestown have in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Jamestown have in August?
When is the highest UV index?
What is the UV index reading in August in Jamestown?
Average temperature in August
Jamestown, IN
- Average high temperature in August: 79.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in August: 62.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in August
Jamestown, IN
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Jamestown, IN
- Average wind speed in August: 6.2mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in August
Jamestown, IN
- Average humidity in August: 82%
The months with the highest relative humidity are January, July and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Jamestown, IN
- Average rainfall in August: 2.52"
The wettest month (with the highest rainfall) is April (3.86").
The driest months (with the least rainfall) are February and November (1.85").
Average rainfall days in August
Jamestown, IN
- Average rainfall days in August: 16.8 days
The month with the highest number of rainy days is May (20.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in August
Jamestown, IN
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Jamestown, IN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Jamestown, IN
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 9h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in August
Jamestown, IN
- Average sunshine days in August: 11.3 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in August
Jamestown, IN
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Jamestown, IN
- Average cloud cover in August: 33
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in August
Jamestown, IN
- 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).
Jamestown, Indiana, USA
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