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
In September, the average high-temperature marginally decreases from a warm 78.3°F (25.7°C) in August to an agreeable 72.7°F (22.6°C). In September, Hamilton experiences a temperature dip to an average of 55°F (12.8°C) at night.Humidity
The average relative humidity in September in Hamilton, Indiana, is 80%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. In Hamilton, during the entire year, the rain falls for 155.4 days and collects up to 23.94" (608mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Hamilton, Indiana, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:22 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hamilton in September?
What is the average humidity in September in Hamilton?
How many days does it rain in September in Hamilton?
When it does not snow in Hamilton?
Does it snow in Hamilton in September?
What is the average length of the day in September in Hamilton?
When is the sunrise / sunset in September in Hamilton?
How many hours of sunshine does Hamilton have in September?
How high is the UV index in September in Hamilton?
Average temperature in September
Hamilton, IN
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in September
Hamilton, IN
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Hamilton, IN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Hamilton, IN
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Hamilton, IN
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days in September
Hamilton, IN
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Hamilton, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hamilton, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hamilton, IN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Hamilton, IN
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in September
Hamilton, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Hamilton, IN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Hamilton, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
Hamilton, Indiana, USA
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