September weather forecastRiverview Heights, WV
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Riverview Heights, West Virginia, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 55.4°F (13°C).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's 82.4°F (28°C) to a still moderately hot 76.6°F (24.8°C). In September, Riverview Heights reports a consistent average low-temperature of 55.4°F (13°C) during the nights.Humidity
In Riverview Heights, the average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall in Riverview Heights. Rain falls for 13.2 days and accumulates 1.93" (49mm) of precipitation.Snowfall
In Riverview Heights, snow does not fall in June through September.Daylight
In Riverview Heights, West Virginia, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:51 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:05 pm EDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In Riverview Heights, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Riverview Heights, WV
- Average high temperature in September: 76.6°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in September
Riverview Heights, WV
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Riverview Heights, WV
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are January and February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Riverview Heights, WV
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Riverview Heights, WV
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Riverview Heights, WV
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is November (11.4 days).
Average snowfall in September
Riverview Heights, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Riverview Heights, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Riverview Heights, WV
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Riverview Heights, WV
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is October (14.1 days).
The months with the least sunshine days are January and February (7.6 days).
Average UV index in September
Riverview Heights, WV
- Average UV index in September: 4
The months with the highest UV index are May, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Riverview Heights, WV
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Riverview Heights, WV
- Average visibility in September: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January and February (4mi).
