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
September's arrival aligns with a minor decrease in average high-temperatures, from August's 84°F (28.9°C) to a still moderately hot 78.1°F (25.6°C). Houston records an average nighttime low of 58.6°F (14.8°C) in September.Humidity
In Houston, the average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 13 days and accumulates 1.57" (40mm) of precipitation.Snowfall
In Houston, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 7:14 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:40 am and sunset at 7:28 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Houston have in September?
When is the sunrise / sunset in September in Houston?
How many hours of sunshine does Houston have in September?
What is the UV index intensity in September?
Average temperature in September
Houston, IN
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 58.6°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 (23.7°F).
Average pressure in September
Houston, 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
Houston, IN
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February and April (8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Houston, IN
- Average humidity in September: 76%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Houston, IN
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Houston, IN
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Houston, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Houston, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 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
Houston, IN
- Average daylight in September: 12h and 2min
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 30min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Houston, IN
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (10.6 days).
Average UV index in September
Houston, 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
Houston, IN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Houston, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August, September and December (5mi).
Houston, Indiana, USA
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