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
With the arrival of August, Derry's average high-temperature registers at a still warm 80.1°F (26.7°C), indicating a subtle variation from the previous month. During the month of August, Derry's nighttime temperature lowers to an average of 59.9°F (15.5°C).Humidity
The average relative humidity in August in Derry is 75%.Rainfall
In Derry, during August, the rain falls for 10.4 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Derry, New Hampshire, during the entire year, the rain falls for 104.4 days and collects up to 12.95" (329mm) of precipitation.Snowfall
In Derry, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 5:37 am and sunset at 8:05 pm. On the last day of August, sunrise is at 6:09 am and sunset at 7:21 pm EDT.
Sunshine
August has the most sunshine of the year, with an average of 10.4h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Derry in August?
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 Derry have in August?
When 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
Derry, NH
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in August: 59.9°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in August
Derry, 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 (29.92"Hg).
Average wind speed in August
Derry, NH
- Average wind speed in August: 5.1mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in August
Derry, NH
- Average humidity in August: 75%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in August
Derry, NH
- Average rainfall in August: 1.1"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in August
Derry, NH
- Average rainfall days in August: 10.4 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in August
Derry, NH
- Average snowfall in August: 0"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Derry, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Derry, NH
- Average daylight in August: 13h and 5min
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 2min
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
Derry, NH
- Average sunshine days in August: 18 days
The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).
Average UV index in August
Derry, NH
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in August
Derry, NH
- Average cloud cover in August: 33
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in August
Derry, NH
- Average visibility in August: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Derry, New Hampshire, USA
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