September weather forecastActon, IN
September
Weather in September
September, the first month of the autumn in Acton, is still a warm month, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 58.1°F (14.5°C).Temperature
September witnesses a gentle descent in average high-temperature, descending from August's warm 81.5°F (27.5°C) to a still moderately hot 75.9°F (24.4°C). In Acton, the September nights cool down to an average low of 58.1°F (14.5°C).Humidity
In Acton, the average relative humidity in September is 77%.Rainfall
In September, in Acton, Indiana, the rain falls for 13.7 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. Throughout the year, there are 161.8 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
In Acton, snow does not fall in May through September.Daylight
In Acton, the average length of the day in September is 12h and 26min.On the first day of September in Acton, Indiana, sunrise is at 7:12 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:27 pm EDT.
Sunshine
The average sunshine in September in Acton is 8.4h.UV index
In Acton, Indiana, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Acton, IN
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in September
Acton, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Acton, IN
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Acton, IN
- Average humidity in September: 77%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Acton, IN
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in September
Acton, IN
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Acton, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Acton, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Acton, IN
- 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 24min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Acton, IN
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in September
Acton, IN
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Acton, IN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Acton, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
