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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a hot 91.8°F (33.2°C) in August to a warm 85.1°F (29.5°C). In the month of September, the nighttime temperature in Alamo Alto dips to a steady average of 68.7°F (20.4°C).Heat index
In September, the heat index is computed to be 84.2°F (29°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In September, the average relative humidity is 43%.Rainfall
In Alamo Alto, during September, the rain falls for 11 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Alamo Alto, during the entire year, the rain falls for 72.6 days and collects up to 7.72" (196mm) of precipitation.Snowfall
January, March through November are months without snowfall.Daylight
In September, the average length of the day in Alamo Alto is 12h and 20min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:49 pm MDT.
Sunshine
In September, the average sunshine in Alamo Alto, Texas, is 11.2h.UV index
In Alamo Alto, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
How hot does it get in Alamo Alto in September?
What is the average humidity in September in Alamo Alto?
How many days does it rain in September in Alamo Alto?
When it does not snow in Alamo Alto?
How many hours of daylight does Alamo Alto have in September?
When are sunrise and sunset in September in Alamo Alto?
How long on average sun shines in September in Alamo Alto?
What is the UV index reading in September in Alamo Alto?
Average temperature in September
Alamo Alto, TX
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is June (94.5°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 68.7°F
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Alamo Alto, TX
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Alamo Alto, TX
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is January (6.9mph).
Average humidity in September
Alamo Alto, TX
- Average humidity in September: 43%
The month with the highest relative humidity is December (47%).
The month with the lowest relative humidity is May (21%).
Average rainfall in September
Alamo Alto, TX
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is April (0.12").
Average rainfall days in September
Alamo Alto, TX
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Alamo Alto, TX
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Alamo Alto, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September and November (0 days).
Average daylight in September /
Average sunshine in September
Alamo Alto, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- 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 12min).
Average sunshine days in September
Alamo Alto, TX
- Average sunshine days in September: 15.1 days
The months with the most sunshine days are January and March (27.3 days).
The month with the least sunshine days is August (10.3 days).
Average UV index in September
Alamo Alto, TX
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Alamo Alto, TX
- Average cloud cover in September: 16
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is May (Cloud cover 8).
Average visibility in September
Alamo Alto, 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).
Alamo Alto, Texas, USA
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