September weather forecastHomer, AK
September
Weather in September
September witnesses a perceptible change in Homer's weather that signals the onset of the fall season. The temperature continues to dip gradually from August, paving the way for the cooler months. Intriguingly, this month sees the return of snowfall, albeit at a minimal 0.39" (10mm), which indicates the reappearance of winter-like climatic traits. The shorter daylight and sunshine hours, along with consequent lower visibility, denote the gradual shift towards darker days. Furthermore, the sea temperature descends to 52°F (11.1°C), enhancing the coolness of the approaching season.Temperature
Homer's weather subtly changes with the onset of September, barely falling from a refreshing 56.7°F (13.7°C) in August to a cool 51.3°F (10.7°C). Homer's nighttime temperature in September consistently rests at a frosty 43.9°F (6.6°C).Humidity
In Homer, the average relative humidity in September is 82%.Rainfall
In Homer, in September, during 19.9 rainfall days, 3.86" (98mm) of precipitation is typically accumulated. Throughout the year, there are 183.8 rainfall days, and 35.16" (893mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.39" (10mm) of snow. Throughout the year, there are 78.8 snowfall days, and 48.43" (1230mm) of snow is accumulated.Ocean temperature
In September, the average ocean temperature in Homer is 51.8°F (11°C).Note: Caution: 51.8°F (11°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.
Daylight
In Homer, the average length of the day in September is 12h and 49min.On the first day of September, sunrise is at 7:04 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 7:40 pm AKDT.
Sunshine
In Homer, the average sunshine in September is 5.9h.UV index
In Homer, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 2 transforms into the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Homer, AK
- Average high temperature in September: 51.3°F
The warmest month (with the highest average high temperature) is July (57.7°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 43.9°F
The months with the highest average low temperature are July and August (48.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Homer, AK
- Average pressure in September: 29.72"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The month with the lowest atmospheric pressure is December (29.6"Hg).
Average wind speed in September
Homer, AK
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is November (8.8mph).
The calmest month (with the lowest average wind speed) is June (5.1mph).
Average humidity in September
Homer, AK
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Homer, AK
- Average rainfall in September: 3.86"
The wettest month (with the highest rainfall) is December (4.65").
The driest month (with the least rainfall) is June (1.54").
Average rainfall days in September
Homer, AK
- Average rainfall days in September: 19.9 days
The month with the highest number of rainy days is September (19.9 days).
The month with the least rainy days is February (9 days).
Average snowfall in September
Homer, AK
- Average snowfall in September: 0.39"
The month with the highest snowfall is December (11.54").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Homer, AK
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (14.9 days).
The months with the least snowfall days are June and August (0 days).
Average sea temperature in September
Homer, AK
- Average sea temperature in September: 52°F
The best month for swimming (with the highest average sea temperature) is August (54°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight in September /
Average sunshine in September
Homer, AK
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 5h and 54min
The months with the most sunshine are June and July (Average sunshine: 8h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in September
Homer, AK
- Average sunshine days in September: 9.1 days
The months with the most sunshine days are March and July (12.3 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in September
Homer, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Homer, AK
- Average cloud cover in September: 54
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 52).
Average visibility in September
Homer, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, August and December (5mi).
