September weather forecastSusitna, AK
September
Weather in September
September, the first month of the autumn in Susitna, is still a cool month, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 44.1°F (6.7°C).Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a comfortable 61.2°F (16.2°C) in August to a fresh 53.8°F (12.1°C). In Susitna, the average low-temperature during the month of September is a chilly 44.1°F (6.7°C).Humidity
The average relative humidity in September in Susitna is 78%.Rainfall
The month with the most rainfall in Susitna is September, when the rain falls for 16.2 days and typically aggregates up to 1.22" (31mm) of precipitation.Snowfall
In Susitna, snow does not fall in May through September.Daylight
In Susitna, the average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 6:56 am and sunset at 9:08 pm. On the last day of September, sunrise is at 8:09 am and sunset at 7:35 pm AKDT.
Sunshine
In Susitna, the average sunshine in September is 7h.UV index
In Susitna, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in September converts into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Susitna, AK
- Average high temperature in September: 53.8°F
The warmest month (with the highest average high temperature) is July (63.3°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 44.1°F
The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Susitna, AK
- Average pressure in September: 29.74"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.67"Hg).
Average wind speed in September
Susitna, AK
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is November (8.3mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
Susitna, AK
- Average humidity in September: 78%
The months with the highest relative humidity are February and March (86%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Susitna, AK
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is September (1.22").
The driest month (with the least rainfall) is June (0.31").
Average rainfall days in September
Susitna, AK
- Average rainfall days in September: 16.2 days
The month with the highest number of rainy days is September (16.2 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
Susitna, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.48").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Susitna, AK
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (9.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Susitna, AK
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 18min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Susitna, AK
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is September (11.2 days).
Average UV index in September
Susitna, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Susitna, AK
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 51).
The months with the least cloud cover are May and June (Cloud cover 42).
Average visibility in September
Susitna, AK
- 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).
