August weather forecastWinchester, NH
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Winchester, New Hampshire, with an average temperature varying between 78.4°F (25.8°C) and 57.6°F (14.2°C).Temperature
The transition from July to August brings an average high-temperature of a still warm 78.4°F (25.8°C), barely different from July's 80.2°F (26.8°C). Winchester's August nights cool down to an average low-temperature of 57.6°F (14.2°C).Humidity
In Winchester, the average relative humidity in August is 77%.Rainfall
In August, the rain falls for 13.5 days. Throughout August, 1.89" (48mm) of precipitation is accumulated. In Winchester, during the entire year, the rain falls for 146.7 days and collects up to 27.2" (691mm) of precipitation.Snowfall
June through September are months without snowfall in Winchester.Daylight
In August, the average length of the day is 13h and 52min.On the first day of the month, sunrise is at 5:41 am and sunset at 8:09 pm. On the last day of August, in Winchester, New Hampshire, sunrise is at 6:13 am and sunset at 7:25 pm EDT.
Sunshine
August has the most sunshine of the year, with an average of 10.4h of sunshine.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In August, an average UV index of 5 transforms into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Winchester, NH
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in August: 57.6°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in August
Winchester, 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
Winchester, NH
- Average wind speed in August: 5mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in August
Winchester, NH
- Average humidity in August: 77%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).
Average rainfall in August
Winchester, NH
- Average rainfall in August: 1.89"
The wettest month (with the highest rainfall) is October (2.76").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in August
Winchester, NH
- Average rainfall days in August: 13.5 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in August
Winchester, NH
- Average snowfall in August: 0"
The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Winchester, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Winchester, 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 24min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in August
Winchester, NH
- Average sunshine days in August: 15.6 days
The months with the most sunshine days are January and November (16.7 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in August
Winchester, 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 January, February, March, October, November and December (UV index 2).
Average cloud cover in August
Winchester, NH
- Average cloud cover in August: 33
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in August
Winchester, NH
- Average visibility in August: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
