September weather forecastKnollton Heights, IN
September
Weather in September
September, the first month of the autumn in Knollton Heights, is also a moderately hot month, with an average temperature varying between 75.6°F (24.2°C) and 57.9°F (14.4°C).Temperature
As August turns into September, the average high-temperatures rest at a still warm 75.6°F (24.2°C), showing a minor variation from the prior month. In September, the recorded average low-temperature is a refreshing 57.9°F (14.4°C).Humidity
The average relative humidity in September in Knollton Heights is 77%.Rainfall
In September, in Knollton Heights, the rain falls for 14 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. In Knollton Heights, during the entire year, the rain falls for 158.4 days and collects up to 28.23" (717mm) of precipitation.Snowfall
In Knollton Heights, snow does not fall in May through September.Daylight
In Knollton Heights, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:13 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:28 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September in Knollton Heights is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knollton Heights, IN
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 57.9°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 (20.8°F).
Average pressure in September
Knollton Heights, 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
Knollton Heights, IN
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Knollton Heights, IN
- Average humidity in September: 77%
The month with the highest relative humidity is December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Knollton Heights, IN
- Average rainfall in September: 1.93"
The wettest months (with the highest rainfall) are April and May (3.43").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in September
Knollton Heights, IN
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in September
Knollton Heights, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Knollton Heights, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knollton Heights, IN
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 24min
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: 4h and 0min).
Average sunshine days in September
Knollton Heights, IN
- Average sunshine days in September: 14 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in September
Knollton Heights, IN
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Knollton Heights, 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
Knollton Heights, 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).
