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's average high-temperature stands at a still tropical 88.5°F (31.4°C), showing little deviation from August's 92.7°F (33.7°C). During September, the average low-temperature in Arivaca is an agreeable 69.8°F (21°C).Heat index
The heat index value during September is appraised at a hot 89.6°F (32°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In September, the average relative humidity is 42%.Rainfall
In Arivaca, during September, the rain falls for 8.6 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, in Arivaca, there are 61.6 rainfall days, and 5.87" (149mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:01 am and sunset at 6:48 pm. On the last day of September, sunrise is at 6:18 am and sunset at 6:11 pm MST.
Sunshine
The average sunshine in September is 9.7h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 7 during September translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Arivaca in September?
What is the average humidity in September in Arivaca?
How many days does it rain in September in Arivaca?
When it does not snow in Arivaca?
How many hours of daylight does Arivaca have in September?
What time are sunrise and sunset in September in Arivaca?
How many hours of sunshine does Arivaca have in September?
What is the month with the highest UV index in Arivaca?
How high is the UV index in September in Arivaca?
Average temperature in September
Arivaca, AZ
- Average high temperature in September: 88.5°F
The warmest month (with the highest average high temperature) is June (95.5°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is July (75.4°F).
The coldest month (with the lowest average low temperature) is December (43°F).
Average pressure in September
Arivaca, AZ
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Arivaca, AZ
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are April and May (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Arivaca, AZ
- Average humidity in September: 42%
The month with the highest relative humidity is December (44%).
The months with the lowest relative humidity are May and June (21%).
Average rainfall in September
Arivaca, AZ
- Average rainfall in September: 0.94"
The wettest months (with the highest rainfall) are July and August (1.3").
The driest months (with the least rainfall) are April and May (0.12").
Average rainfall days in September
Arivaca, AZ
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is May (1.4 days).
Average snowfall in September
Arivaca, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Arivaca, AZ
- Average snowfall days in September: 0.1 days
The months with the highest number of snowfall days are January, September and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
Arivaca, AZ
- 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: 9h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Arivaca, AZ
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Arivaca, AZ
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in September
Arivaca, AZ
- Average cloud cover in September: 14
The months with the most cloud cover are July and December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 7).
Average visibility in September
Arivaca, AZ
- 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).
Arivaca, Arizona, USA
Weather forecast for your location
2. Allow the app to use your location