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
With the commencement of September, San Antonio records a moderate temperature decline, with the average high easing from August's 85.6°F (29.8°C) to a still moderately hot 79.5°F (26.4°C). San Antonio records an average nighttime low of 61°F (16.1°C) in September.Humidity
The average relative humidity in September is 44%.Rainfall
In September, in San Antonio, the rain falls for 12.1 days. Throughout September, 1.34" (34mm) of precipitation is accumulated. In San Antonio, during the entire year, the rain falls for 90.7 days and collects up to 9.8" (249mm) of precipitation.Snowfall
In San Antonio, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:32 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:52 pm MDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Make use of precautions - It is urged to ward off sun damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in San Antonio?
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 San Antonio have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
San Antonio, NM
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is June (88.3°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in September
San Antonio, NM
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.88"Hg).
Average wind speed in September
San Antonio, NM
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
San Antonio, NM
- Average humidity in September: 44%
The month with the highest relative humidity is January (54%).
The months with the lowest relative humidity are April, May and June (25%).
Average rainfall in September
San Antonio, NM
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the least rainfall) is April (0.39").
Average rainfall days in September
San Antonio, NM
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is November (3.6 days).
Average snowfall in September
San Antonio, NM
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
San Antonio, NM
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
San Antonio, NM
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in September
San Antonio, NM
- Average sunshine days in September: 15 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is August (10.7 days).
Average UV index in September
San Antonio, NM
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in September
San Antonio, NM
- Average cloud cover in September: 14
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is October (Cloud cover 11).
Average visibility in September
San Antonio, NM
- 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).
San Antonio, New Mexico, USA
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