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 registers an average high-temperature of a still moderately hot 74.1°F (23.4°C), slightly varied from August's 79.3°F (26.3°C). During September, Houston sees a mean low-temperature of 56.3°F (13.5°C).Humidity
In Houston, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.7 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. In Houston, during the entire year, the rain falls for 147.8 days and collects up to 21.3" (541mm) of precipitation.Snowfall
In Houston, snow does not fall in May through September.Daylight
In Houston, Ohio, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:05 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:20 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Houston, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What are September temperatures in Houston?
What is the average humidity in September in Houston?
How many days does it rain in September in Houston?
When it does not snow in Houston?
Does it snow in Houston in September?
What is the average length of the day in September in Houston?
When are sunrise and sunset in September in Houston?
How many hours of sunshine does Houston have in September?
How high is the UV index in September in Houston?
Average temperature in September
Houston, OH
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Houston, OH
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Houston, OH
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Houston, OH
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Houston, OH
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.18").
Average rainfall days in September
Houston, OH
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Houston, OH
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Houston, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Houston, OH
- Average daylight in September: 12h and 2min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Houston, OH
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Houston, OH
- 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
Houston, OH
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Houston, OH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Houston, Ohio, USA
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