September weather forecastWest Arnheim, OH
September
Weather in September
The first month of the autumn, September, is still a warm month in West Arnheim, Ohio, with an average temperature ranging between max 77.2°F (25.1°C) and min 58.1°F (14.5°C).Temperature
West Arnheim's transition into September involves a gentle shift in temperature, receding from a moderately hot 82.9°F (28.3°C) in August to a still warm 77.2°F (25.1°C). During September, West Arnheim records a consistent average nighttime temperature of 58.1°F (14.5°C).Humidity
August through November, with an average relative humidity of 76%, are the least humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 1.42" (36mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day in West Arnheim is 12h and 26min.On the first day of September in West Arnheim, sunrise is at 7:05 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:19 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September 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: The daily high UV index of 4 during September translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
West Arnheim, OH
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in September
West Arnheim, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
West Arnheim, OH
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
West Arnheim, OH
- Average humidity in September: 76%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are August, September, October and November (76%).
Average rainfall in September
West Arnheim, OH
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
West Arnheim, OH
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.2 days).
The months with the least rainy days are January and November (9 days).
Average snowfall in September
West Arnheim, OH
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
West Arnheim, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
West Arnheim, 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 30min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
West Arnheim, OH
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
West Arnheim, OH
- Average UV index in September: 4
The months with the highest UV index are May, 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
West Arnheim, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
West Arnheim, OH
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
