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 advent of August signifies a minor shift to an average high-temperature of a still moderately hot 77.2°F (25.1°C), aligning closely with July. An average low-temperature of 56.3°F (13.5°C) is anticipated throughout the nights during August.Humidity
The average relative humidity in August in Alton is 79%.Rainfall
In Alton, during August, the rain falls for 14.3 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Alton, New Hampshire, during the entire year, the rain falls for 152 days and collects up to 29.09" (739mm) of precipitation.Snowfall
In Alton, snow does not fall in June through September.Daylight
In Alton, the average length of the day in August is 13h and 55min.On the first day of the month, sunrise is at 5:35 am and sunset at 8:07 pm. On the last day of August, in Alton, sunrise is at 6:08 am and sunset at 7:21 pm EDT.
Sunshine
The month with the most sunshine is August, with an average of 10.2h of sunshine.UV index
The months with the highest UV index in Alton are June through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 5 during August leads to these instructions:
Undertake precautions - Guarding against sun damage is counselled. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the average August temperature in Alton?
What is the average humidity in August in Alton?
How many days does it rain in August in Alton?
When it does not snow in Alton?
What is the average length of the day in August in Alton?
When is the sunrise / sunset in August in Alton?
What month has the most sunshine in Alton?
How many hours of sunshine does Alton have in August?
What are the months with the highest UV index in Alton?
What is the UV index reading in August in Alton?
Average temperature in August
Alton, NH
- Average high temperature in August: 77.2°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in August: 56.3°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 (12.9°F).
Average pressure in August
Alton, NH
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Alton, NH
- Average wind speed in August: 4.7mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in August
Alton, NH
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in August
Alton, NH
- Average rainfall in August: 2.05"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in August
Alton, NH
- Average rainfall days in August: 14.3 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in August
Alton, NH
- Average snowfall in August: 0"
The month with the highest snowfall is February (9.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Alton, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Alton, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in August
Alton, NH
- Average sunshine days in August: 14.4 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.4 days).
Average UV index in August
Alton, NH
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in August
Alton, NH
- Average cloud cover in August: 35
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in August
Alton, 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).
Alton, New Hampshire, USA
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