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 arrival registers an average high-temperature of a frosty 49.1°F (9.5°C), closely aligning with the temperature of the previous month. Throughout September nights, Saint George records a consistent low-temperature averaging a still chilly 46.9°F (8.3°C).Humidity
The average relative humidity in September is 86%.Rainfall
In September, the rain falls for 18.5 days. Throughout September, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 159.8 rainfall days, and 24.17" (614mm) of precipitation is accumulated.Snowfall
In Saint George, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 43min.On the first day of the month, sunrise is at 8:23 am and sunset at 10:12 pm. On the last day of September, in Saint George, sunrise is at 9:21 am and sunset at 8:54 pm AKDT.
Sunshine
The average sunshine in September in Saint George is 4.3h.UV index
In September, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in September translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint George in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Saint George have in September?
What time 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
Saint George, AK
- Average high temperature in September: 49.1°F
The warmest month (with the highest average high temperature) is August (50.9°F).
The month with the lowest average high temperature is March (31.3°F).
- Average low temperature in September: 46.9°F
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is March (26.2°F).
Average pressure in September
Saint George, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.93"Hg).
The month with the lowest atmospheric pressure is December (29.52"Hg).
Average wind speed in September
Saint George, AK
- Average wind speed in September: 17.5mph
The windiest month (with the highest average wind speed) is November (22.1mph).
The calmest month (with the lowest average wind speed) is July (12.7mph).
Average humidity in September
Saint George, AK
- Average humidity in September: 86%
The month with the highest relative humidity is July (93%).
The months with the lowest relative humidity are November and December (77%).
Average rainfall in September
Saint George, AK
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is November (2.95").
The driest month (with the least rainfall) is June (1.02").
Average rainfall days in September
Saint George, AK
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is October (22 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Saint George, AK
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint George, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint George, AK
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in September: 4h and 2min
The month with the most sunshine is June (Average sunshine: 5h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in September
Saint George, AK
- Average sunshine days in September: 7.1 days
The months with the most sunshine days are May and June (11.8 days).
The month with the least sunshine days is December (3.1 days).
Average UV index in September
Saint George, AK
- Average UV index in September: 2
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April, November and December (UV index 1).
Average cloud cover in September
Saint George, AK
- Average cloud cover in September: 70
The month with the most cloud cover is July (Cloud cover 79).
The month with the least cloud cover is June (Cloud cover 69).
Average visibility in September
Saint George, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, August, September and October (6mi).
The month with the lowest visibility is January (4mi).
Saint George, Alaska, USA
Weather forecast for your location
2. Allow the app to use your location