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 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
Santa Rosa in September witnesses an average high-temperature of a hot 90.5°F (32.5°C), indicating a slight variation from August's 95°F (35°C). An average minimum temperature of 78.1°F (25.6°C) marks the month of September.Heat index
September's average heat index is evaluated at an extremely hot 107.6°F (42°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.Understand that the heat index values take into account shaded locations and mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In September, the average relative humidity is 69%.Rainfall
In Santa Rosa, during September, the rain falls for 11.5 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Santa Rosa, during the entire year, the rain falls for 79.8 days and collects up to 5.24" (133mm) of precipitation.Snowfall
In Santa Rosa, snow does not fall in January, March through December.Daylight
In September, the average length of the day is 12h and 18min.On the first day of September, sunrise is at 7:11 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:18 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 7 in September leads to these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Santa Rosa have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Santa Rosa, TX
- Average high temperature in September: 90.5°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (68.7°F).
- Average low temperature in September: 78.1°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (55.4°F).
Average pressure in September
Santa Rosa, TX
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Santa Rosa, TX
- Average wind speed in September: 8.9mph
The windiest months (with the highest average wind speed) are March and April (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in September
Santa Rosa, TX
- Average humidity in September: 69%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Santa Rosa, TX
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is February (0.16").
Average rainfall days in September
Santa Rosa, TX
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is September (11.5 days).
The month with the least rainy days is February (4.7 days).
Average snowfall days in September
Santa Rosa, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Santa Rosa, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Santa Rosa, TX
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is September (15.6 days).
Average UV index in September
Santa Rosa, TX
- Average UV index in September: 7
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Santa Rosa, TX
- Average cloud cover in September: 29
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Santa Rosa, 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).
Santa Rosa, Texas, USA
Weather forecast for your location
2. Allow the app to use your location