August weather forecastSullivan, NH
August
Weather in August
August, the last month of the summer in Sullivan, is also a moderately hot month, with an average temperature varying between 78.1°F (25.6°C) and 56.8°F (13.8°C).Temperature
The advent of August sees the average high-temperature at a still warm 78.1°F (25.6°C), subtly shifted from July's 79.9°F (26.6°C). The average nighttime temperature lowers to a moderate 56.8°F (13.8°C) throughout August.Humidity
In August, the average relative humidity is 77%.Rainfall
In August, the rain falls for 12 days. Throughout August, 0.94" (24mm) of precipitation is accumulated. Throughout the year, there are 125.1 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
In Sullivan, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 53min.On the first day of the month, sunrise is at 5:40 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:13 am and sunset at 7:24 pm EDT.
Sunshine
August has the most sunshine of the year, with an average of 10.3h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 5 during August translates into the following directions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sullivan, NH
- Average high temperature in August: 78.1°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in August: 56.8°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in August
Sullivan, NH
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Sullivan, NH
- Average wind speed in August: 5.1mph
The windiest months (with the highest average wind speed) are January, February and March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in August
Sullivan, NH
- Average humidity in August: 77%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in August
Sullivan, NH
- Average rainfall in August: 0.94"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.75").
Average rainfall days in August
Sullivan, NH
- Average rainfall days in August: 12 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in August
Sullivan, NH
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Sullivan, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Sullivan, NH
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in August
Sullivan, NH
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in August
Sullivan, NH
- 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, March, October, November and December (UV index 2).
Average cloud cover in August
Sullivan, NH
- Average cloud cover in August: 35
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in August
Sullivan, NH
- Average visibility in August: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
