September weather forecastUnderwood, IN
September
Weather in September
September, the first month of the autumn in Underwood, is also a moderately hot month, with an average temperature fluctuating between 78.3°F (25.7°C) and 59°F (15°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from 84.7°F (29.3°C) to a still warm 78.3°F (25.7°C). The nighttime temperature in Underwood, during September, averages of 59°F (15°C).Humidity
The average relative humidity in September in Underwood, Indiana, is 75%.Rainfall
September is the month with the least rainfall in Underwood. Rain falls for 13.1 days and accumulates 1.69" (43mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:13 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:38 am and sunset at 7:26 pm EDT.
Sunshine
In September, the average sunshine in Underwood is 8.3h.UV index
In Underwood, Indiana, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. To guard against the harmful effects of the Sun, minimize exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Underwood, IN
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Underwood, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Underwood, IN
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January and February (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Underwood, IN
- Average humidity in September: 75%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Underwood, IN
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Underwood, IN
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in September
Underwood, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Underwood, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.4 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
Underwood, IN
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).
Average sunshine days in September
Underwood, IN
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is May (10 days).
Average UV index in September
Underwood, IN
- Average UV index in September: 5
The months with the highest UV index are 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
Underwood, IN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Underwood, IN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, May, July and December (5mi).
