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
The transition into September subtly indicates a reduction in the average high-temperature, down to a fresh 54.9°F (12.7°C) from August's refreshing 63.7°F (17.6°C). Houston's temperature tends to fall to an average low of 41.2°F (5.1°C) during the nights of September.Humidity
The average relative humidity in September is 77%.Rainfall
The month with the most rainfall is September, when the rain falls for 16 days and typically aggregates up to 2.13" (54mm) of precipitation.Snowfall
Months with snowfall in Houston are January through May, September through December. September is the first month it typically snows in Houston. Throughout September, in the average 0.3 snowfall days, it receives 0.2" (5mm) of snow. In Houston, during the entire year, snow falls for 56.9 days and aggregates up to 26.54" (674mm) of snow.Daylight
In September, the average length of the day in Houston is 12h and 52min.On the first day of September, sunrise is at 6:52 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 7:31 pm AKDT.
Sunshine
The average sunshine in September is 7.4h.UV index
In September, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 2 suggests this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
What is the average September temperature in Houston?
What is the average humidity in September in Houston?
What is the wettest month in Houston?
How many days does it rain in September in Houston?
When does it start snowing in Houston?
How many hours of daylight does Houston have in September?
When is the sunrise / sunset in September in Houston?
How long on average sun shines in September in Houston?
What is the UV index intensity in September in Houston?
Average temperature in September
Houston, AK
- Average high temperature in September: 54.9°F
The warmest month (with the highest average high temperature) is July (67.6°F).
The month with the lowest average high temperature is January (17.8°F).
- Average low temperature in September: 41.2°F
The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in September
Houston, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.7"Hg).
Average wind speed in September
Houston, AK
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is November (5.1mph).
The calmest month (with the lowest average wind speed) is April (4.3mph).
Average humidity in September
Houston, AK
- Average humidity in September: 77%
The month with the highest relative humidity is March (89%).
The month with the lowest relative humidity is May (61%).
Average rainfall in September
Houston, AK
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is September (2.13").
The driest month (with the least rainfall) is April (0.63").
Average rainfall days in September
Houston, AK
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Houston, AK
- Average snowfall in September: 0.2"
The month with the highest snowfall is December (5.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Houston, AK
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (11.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Houston, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 24min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is May (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Houston, AK
- Average sunshine days in September: 11.8 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is August (9.7 days).
Average UV index in September
Houston, AK
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Houston, AK
- Average cloud cover in September: 46
The months with the most cloud cover are April and August (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 40).
Average visibility in September
Houston, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is March (4mi).
Houston, Alaska, USA
Weather forecast for your location
2. Allow the app to use your location
