September weather forecastEast Chicago, IN
September
Weather in September
In East Chicago, September serves as a transitional phase between the sweltering summer and the impending autumn. This month exhibits temperatures scaling from 59.4°F (15.2°C) to 72.9°F (22.7°C). As rainfall dips to 2.17" (55mm), a significant drying trend begins to emerge. The transition from summer to autumn is swift, noticeable in the shrinking daylight hours and the first touch of coolness in the morning and evening. This cooler backdrop is accentuated by the falling leaves characteristic of the season.Temperature
The onset of September in East Chicago results in a small decrease in the average high-temperature, moderately receding from a warm 78.4°F (25.8°C) in August to a pleasant 72.9°F (22.7°C). During September, East Chicago experiences a consistent low-temperature average of 59.4°F (15.2°C).Humidity
In East Chicago, the average relative humidity in September is 76%.Rainfall
In East Chicago, in September, during 13.8 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In East Chicago, Indiana, during the entire year, the rain falls for 153.8 days and collects up to 25.51" (648mm) of precipitation.Snowfall
In East Chicago, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:16 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:32 pm CDT.
Sunshine
In East Chicago, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index in East Chicago is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
East Chicago, IN
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
East Chicago, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
East Chicago, IN
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
East Chicago, IN
- Average humidity in September: 76%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
East Chicago, IN
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in September
East Chicago, IN
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
East Chicago, IN
- 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
East Chicago, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.4 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
East Chicago, IN
- Average daylight in September: 12h and 30min
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: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
East Chicago, IN
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
East Chicago, IN
- Average UV index in September: 4
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
East Chicago, IN
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
East Chicago, 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).
