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
Johnstown's shift into August is marked by a subtle change to a still moderately hot 80.1°F (26.7°C) from July's 81.3°F (27.4°C) in temperature. August witnesses an average nighttime temperature of 61.5°F (16.4°C).Humidity
In August, the average relative humidity in Johnstown is 79%.Rainfall
In Johnstown, Ohio, in August, during 16.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Johnstown, there are 176.7 rainfall days, and 33.7" (856mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Johnstown.Daylight
In Johnstown, the average length of the day in August is 13h and 43min.On the first day of the month, sunrise is at 6:29 am and sunset at 8:44 pm. On the last day of August, sunrise is at 6:58 am and sunset at 8:03 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.3h of sunshine.UV index
In Johnstown, Ohio, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In August, the average maximum UV index of 5 translates into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Johnstown in August?
What is the average humidity in August in Johnstown?
How much does it rain in Johnstown in August?
When it does not snow in Johnstown?
What is the average length of the day in August in Johnstown?
When are sunrise and sunset in August in Johnstown?
What is the month with the most sunshine in Johnstown?
How long on average sun shines in August in Johnstown?
What is the UV index reading in August in Johnstown?
Average temperature in August
Johnstown, OH
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in August
Johnstown, OH
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in August
Johnstown, OH
- Average wind speed in August: 5.6mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in August
Johnstown, OH
- Average humidity in August: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall in August
Johnstown, OH
- Average rainfall in August: 2.56"
The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in August
Johnstown, OH
- Average rainfall days in August: 16.1 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in August
Johnstown, OH
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Johnstown, OH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Johnstown, OH
- 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: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Johnstown, OH
- Average sunshine days in August: 11.3 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (8.2 days).
Average UV index in August
Johnstown, OH
- 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, February, November and December (UV index 2).
Average cloud cover in August
Johnstown, OH
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Johnstown, OH
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February and September (5mi).
Johnstown, Ohio, USA
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