August weather forecastLondonderry, NH
August
Weather in August
August resonates with July's weather, portraying similar patterns with slight moderation. Clear skies abound, the sun maintains its dominant presence, and daylight maximizes the opportunities for outdoor activities. Rainfall remains at bay and temperatures are notably warm, with ranges from 59.9°F (15.5°C) to 80.1°F (26.7°C). The advent of September forecasts a steady decrease in temperature as Londonderry inches its way back to cooler fall conditions.Temperature
Londonderry transitions into August recording an average high-temperature of a still warm 80.1°F (26.7°C), closely aligning with the preceding month's temperature. An average nighttime temperature of 59.9°F (15.5°C) is recorded during August.Humidity
The average relative humidity in August is 75%.Rainfall
In August, in Londonderry, the rain falls for 10.4 days. Throughout August, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Londonderry, there are 104.4 rainfall days, and 12.95" (329mm) of precipitation is accumulated.Snowfall
In Londonderry, snow does not fall in June through September.Daylight
In August, the average length of the day in Londonderry is 13h and 53min.On the first day of August in Londonderry, sunrise is at 5:37 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:21 pm EDT.
Sunshine
With an average of 10.4h of sunshine, August has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Londonderry. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: During August, 6 as the daily maximum UV index converts into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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
Londonderry, 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).
