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 marks a gentle change in average high-temperature, declining from August's tropical 91.4°F (33°C) to a warm 82.9°F (28.3°C). In September, Happy experiences an average nighttime temperature of 61.9°F (16.6°C).Heat index
The heat index in September is appraised at a hot 86°F (30°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.For clarity, heat index numbers account for light winds and areas under shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
With an average relative humidity of 57%, September is the most humid month.Rainfall
In Happy, during September, the rain falls for 11.9 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, in Happy, there are 82.2 rainfall days, and 13.35" (339mm) of precipitation is accumulated.Snowfall
In Happy, snow does not fall in May through September.Daylight
In Happy, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 7:20 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:32 pm CDT.
Sunshine
In Happy, the average sunshine in September is 9.1h.UV index
In Happy, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 during September translates into the following guidance:
Take precautions - Protection against sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the most humid month?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September in Happy?
What time are sunrise and sunset in September?
How many hours of sunshine does Happy have in September?
What is the UV index reading in September?
Average temperature in September
Happy, TX
- Average high temperature in September: 82.9°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (50.9°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Happy, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Happy, TX
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (13.4mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in September
Happy, TX
- Average humidity in September: 57%
The month with the highest relative humidity is September (57%).
The month with the lowest relative humidity is April (41%).
Average rainfall in September
Happy, TX
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is December (0.2").
Average rainfall days in September
Happy, TX
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is January (1.3 days).
Average snowfall in September
Happy, TX
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Happy, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Happy, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Happy, TX
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (28.3 days).
The month with the least sunshine days is August (14.5 days).
Average UV index in September
Happy, TX
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Happy, TX
- Average cloud cover in September: 23
The months with the most cloud cover are February and September (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 15).
Average visibility in September
Happy, TX
- 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).
Happy, Texas, USA
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