August weather forecastRiverdale, NJ
August
Weather in August
The last month of the summer, August, is another warm month in Riverdale, New Jersey, with an average temperature fluctuating between 67.6°F (19.8°C) and 82.6°F (28.1°C).Temperature
The commencement of August notes an average high-temperature of a still warm 82.6°F (28.1°C), exhibiting little difference from the previous month. In Riverdale, an average temperature of 67.6°F (19.8°C) is noted during August nights.Heat index
The heat index value during August is appraised at a tropical 87.8°F (31°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
The least humid month is August, with an average relative humidity of 69%.Rainfall
In Riverdale, in August, it is raining for 10.8 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 106.1 rainfall days, and 8.31" (211mm) of precipitation is accumulated.Snowfall
In Riverdale, snow does not fall in May through November.Daylight
The average length of the day in August is 13h and 46min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:23 am and sunset at 7:30 pm EDT.
Sunshine
In August, the average sunshine in Riverdale, New Jersey, is 10.4h.UV index
The months with the highest UV index in Riverdale are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 6 in August suggests the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Riverdale, NJ
- Average high temperature in August: 82.6°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in August: 67.6°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in August
Riverdale, NJ
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Riverdale, NJ
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in August
Riverdale, NJ
- Average humidity in August: 69%
The months with the highest relative humidity are February and December (76%).
The month with the lowest relative humidity is August (69%).
Average rainfall in August
Riverdale, NJ
- Average rainfall in August: 0.67"
The wettest month (with the highest rainfall) is July (0.98").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in August
Riverdale, NJ
- Average rainfall days in August: 10.8 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in August
Riverdale, NJ
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.35").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in August
Riverdale, NJ
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Riverdale, NJ
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 10h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Riverdale, NJ
- Average sunshine days in August: 18.6 days
The month with the most sunshine days is January (22.5 days).
The months with the least sunshine days are May and June (15.9 days).
Average UV index in August
Riverdale, NJ
- 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
Riverdale, NJ
- Average cloud cover in August: 30
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Riverdale, NJ
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
