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 average high-temperature slightly decreases in September, shifting from a moderately hot 80.8°F (27.1°C) in August to a still warm 75.4°F (24.1°C). An average low-temperature of 57.2°F (14°C) is expected during September.Humidity
The average relative humidity in September is 77%.Rainfall
The month with the least rainfall in Somerville is September, when the rain falls for 14.4 days and typically collects 1.89" (48mm) of precipitation.Snowfall
In Somerville, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Somerville, sunrise is at 7:07 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:22 pm EDT.
Sunshine
In September, the average sunshine in Somerville is 8.3h.UV index
In September, the average daily maximum UV index in Somerville is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the usual temperature for Somerville in September?
What is the average humidity in September in Somerville?
What is the driest month in Somerville?
How much does it rain in Somerville in September?
When it does not snow in Somerville?
Does it snow in Somerville in September?
How many hours of daylight does Somerville have in September?
When is the sunrise / sunset in September in Somerville?
How long on average sun shines in September in Somerville?
What is the UV index reading in September in Somerville?
Average temperature in September
Somerville, OH
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Somerville, OH
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Somerville, OH
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Somerville, OH
- Average humidity in September: 77%
The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in September
Somerville, OH
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Somerville, OH
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in September
Somerville, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Somerville, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Somerville, OH
- 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 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Somerville, OH
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in September
Somerville, OH
- Average UV index in September: 4
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, November and December (UV index 2).
Average cloud cover in September
Somerville, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Somerville, OH
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Somerville, Ohio, USA
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