Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a warm 82°F (27.8°C) to a still moderately hot 76.1°F (24.5°C). Smithfield's nights in September experience an average temperature drop to a fresh 54.7°F (12.6°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Smithfield, West Virginia, in September, during 15.4 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In Smithfield, during the entire year, the rain falls for 188.6 days and collects up to 39.17" (995mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Smithfield, sunrise is at 6:51 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:05 pm EDT.
Sunshine
In September, the average sunshine in Smithfield is 8.5h.UV index
In Smithfield, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Smithfield in September?
What is the average humidity in September in Smithfield?
How much does it rain in Smithfield in September?
When it does not snow in Smithfield?
Does it snow in Smithfield in September?
How many hours of daylight does Smithfield have in September?
What time are sunrise and sunset in September in Smithfield?
How long on average sun shines in September in Smithfield?
What is the UV index reading in September in Smithfield?
Average temperature in September
Smithfield, WV
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Smithfield, WV
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Smithfield, WV
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Smithfield, WV
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Smithfield, WV
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in September
Smithfield, WV
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is January (10.8 days).
Average snowfall in September
Smithfield, WV
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Smithfield, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Smithfield, WV
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Smithfield, WV
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (7.8 days).
Average UV index in September
Smithfield, WV
- Average UV index in September: 4
The months with the highest UV index are May and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Smithfield, WV
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Smithfield, WV
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
Smithfield, West Virginia, USA
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