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
August's commencement is accompanied by an average high-temperature of a still warm 77.2°F (25.1°C), diverging marginally from July's 79°F (26.1°C). An average low-temperature of 55.9°F (13.3°C) is noted during the nights in August.Humidity
The average relative humidity in August is 78%.Rainfall
In Grafton, in August, it is raining for 10.6 days, with typically 0.98" (25mm) of accumulated precipitation. In Grafton, during the entire year, the rain falls for 103.3 days and collects up to 12.52" (318mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 55min.On the first day of the month, sunrise is at 5:38 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:11 am and sunset at 7:24 pm EDT.
Sunshine
The month with the most sunshine is August, with an average of 10.1h of sunshine.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during August, leads to the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Grafton have in August?
What time are sunrise and sunset in August?
What month has the most sunshine?
How long on average sun shines in August?
What are the months with the highest UV index?
How high is the UV index in August?
Average temperature in August
Grafton, NH
- Average high temperature in August: 77.2°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in August: 55.9°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in August
Grafton, NH
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Grafton, NH
- Average wind speed in August: 4.9mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in August
Grafton, NH
- Average humidity in August: 78%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in August
Grafton, NH
- Average rainfall in August: 0.98"
The wettest month (with the highest rainfall) is October (1.54").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in August
Grafton, NH
- Average rainfall days in August: 10.6 days
The month with the highest number of rainy days is July (11.6 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in August
Grafton, NH
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Grafton, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Grafton, NH
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in August
Grafton, NH
- Average sunshine days in August: 18.5 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is February (16.1 days).
Average UV index in August
Grafton, NH
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in August
Grafton, NH
- Average cloud cover in August: 36
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in August
Grafton, NH
- Average visibility in August: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).
Grafton, New Hampshire, USA
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