September weather forecastSomerset, OH
September
Weather in September
September, the first month of the autumn in Somerset, is still a warm month, with an average temperature varying between 76.3°F (24.6°C) and 56.1°F (13.4°C).Temperature
Somerset records a mild change in average high-temperature during September, easing from a warm 82°F (27.8°C) in August to a still moderately hot 76.3°F (24.6°C). An average nighttime temperature of 56.1°F (13.4°C) is observed in Somerset during September.Humidity
In September, the average relative humidity is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.1 days and typically collects 2.09" (53mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Somerset, sunrise is at 6:57 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:12 pm EDT.
Sunshine
In Somerset, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Somerset is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during September translates into the following guidance:
Exercise caution. Those with pale skin may experience burns in less than half an hour. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Somerset, OH
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Somerset, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Somerset, OH
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Somerset, OH
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are March, April and November (77%).
Average rainfall in September
Somerset, OH
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Somerset, OH
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (19.8 days).
The months with the least rainy days are January and February (9.8 days).
Average snowfall in September
Somerset, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Somerset, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Somerset, OH
- 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 24min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Somerset, OH
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in September
Somerset, OH
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Somerset, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Somerset, OH
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August, September and December (5mi).
