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
September
Weather in September
Temperature
The onset of September marks a slight increase in the average high-temperature, moving from a refreshing 14.8°C (58.6°F) in August to a comfortable 17.8°C (64°F). Nighttime temperatures in September average to a chilly 8.4°C (47.1°F) in Allen.Humidity
In Allen, the average relative humidity in September is 41%.Rainfall
In Allen, in September, it is raining for 5.4 days, with typically 9mm (0.35") of accumulated precipitation. In Allen, during the entire year, the rain falls for 53.4 days and collects up to 113mm (4.45") of precipitation.Snowfall
January through May, August through December are months without snowfall.Daylight
The average length of the day in September is 11h and 52min.On the first day of the month, sunrise is at 07:52 and sunset at 19:09. On the last day of September, sunrise is at 07:06 and sunset at 19:35 -03.
Sunshine
The average sunshine in September in Allen is 8.6h.UV index
The average daily maximum UV index in September in Allen is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Allen?
What is the average humidity in September in Allen?
How much does it rain in Allen in September?
When it does not snow in Allen?
How many hours of daylight does Allen have in September?
When are sunrise and sunset in September in Allen?
How long on average sun shines in September in Allen?
How high is the UV index in September in Allen?
Average temperature in September
Allen, Argentina
- Average high temperature in September: 17.8°C
The warmest month (with the highest average high temperature) is January (31.8°C).
The month with the lowest average high temperature is July (11.9°C).
- Average low temperature in September: 8.4°C
The month with the highest average low temperature is January (19.3°C).
The coldest month (with the lowest average low temperature) is July (4.4°C).
Average pressure in September
Allen, Argentina
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is July (1018mbar).
The month with the lowest atmospheric pressure is December (1009.8mbar).
Average wind speed in September
Allen, Argentina
- Average wind speed in September: 18.7km/h
The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is May (14.5km/h).
Average humidity in September
Allen, Argentina
- Average humidity in September: 41%
The month with the highest relative humidity is July (55%).
The months with the lowest relative humidity are January and December (25%).
Average rainfall in September
Allen, Argentina
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is October (17mm).
The driest month (with the least rainfall) is December (4mm).
Average rainfall days in September
Allen, Argentina
- Average rainfall days in September: 5.4 days
The month with the highest number of rainy days is October (6.1 days).
The month with the least rainy days is December (2.3 days).
Average snowfall in September
Allen, Argentina
- Average snowfall in September: 0mm
The month with the highest snowfall is June (4mm).
The months with the least snowfall are January, February, March, April, May, August, September, October, November and December (0mm).
Average snowfall days in September
Allen, Argentina
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is June (0.3 days).
The months with the least snowfall days are January, February, March, April, May, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Allen, Argentina
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 54min).
The month with the shortest days is June (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is January (Average sunshine: 10h and 24min).
The months with the least sunshine are May, June and July (Average sunshine: 8h and 24min).
Average sunshine days in September
Allen, Argentina
- Average sunshine days in September: 24.3 days
The month with the most sunshine days is December (27.5 days).
The month with the least sunshine days is February (23.2 days).
Average UV index in September
Allen, Argentina
- Average UV index in September: 4
The months with the highest UV index are February and December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 3).
Average cloud cover in September
Allen, Argentina
- Average cloud cover in September: 25
The months with the most cloud cover are May, June and July (Cloud cover 28).
The month with the least cloud cover is January (Cloud cover 8).
Average visibility in September
Allen, Argentina
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
