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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a fresh 50.5°F (10.3°C) in August to a chilly 43.9°F (6.6°C). Wortmanns's nighttime temperatures in September reveal a minimal variation from the daytime highs, averaging at a cold 36.3°F (2.4°C).Humidity
In Wortmanns, the average relative humidity in September is 85%.Rainfall
In Wortmanns, in September, it is raining for 18.5 days, with typically 6.89" (175mm) of accumulated precipitation. In Wortmanns, during the entire year, the rain falls for 167.5 days and collects up to 56.73" (1441mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Wortmanns, Alaska. September is the first month it typically snows in Wortmanns. Throughout September, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, there are 88.9 snowfall days, and 114.06" (2897mm) of snow is accumulated.Daylight
In Wortmanns, the average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 6:37 am and sunset at 8:48 pm. On the last day of September, sunrise is at 7:49 am and sunset at 7:16 pm AKDT.
Sunshine
In Wortmanns, the average sunshine in September is 6.2h.UV index
In September, the average daily maximum UV index in Wortmanns, Alaska, is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 2 in September translates into this advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
How cold does it get in Wortmanns in September?
What is the average humidity in September in Wortmanns?
How much does it rain in Wortmanns in September?
When does it start to snow in Wortmanns?
How many hours of daylight does Wortmanns have in September?
When are sunrise and sunset in September in Wortmanns?
How long on average sun shines in September in Wortmanns?
What is the UV index reading in September in Wortmanns?
Average temperature in September
Wortmanns, AK
- Average high temperature in September: 43.9°F
The warmest month (with the highest average high temperature) is July (53.2°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in September: 36.3°F
The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure in September
Wortmanns, AK
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is November (29.69"Hg).
Average wind speed in September
Wortmanns, AK
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is November (8.1mph).
The calmest month (with the lowest average wind speed) is July (3.7mph).
Average humidity in September
Wortmanns, AK
- Average humidity in September: 85%
The months with the highest relative humidity are January and April (88%).
The months with the lowest relative humidity are May, June, July and November (83%).
Average rainfall in September
Wortmanns, AK
- Average rainfall in September: 6.89"
The wettest month (with the highest rainfall) is December (7.44").
The driest month (with the least rainfall) is June (1.93").
Average rainfall days in September
Wortmanns, AK
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Wortmanns, AK
- Average snowfall in September: 0.16"
The month with the highest snowfall is December (26.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Wortmanns, AK
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (17.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Wortmanns, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Average sunshine days in September
Wortmanns, AK
- Average sunshine days in September: 9.8 days
The months with the most sunshine days are January and May (12.3 days).
The month with the least sunshine days is December (9.7 days).
Average UV index in September
Wortmanns, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 3).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Wortmanns, AK
- Average cloud cover in September: 56
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 50).
Average visibility in September
Wortmanns, AK
- Average visibility in September: 5mi
The month with the highest visibility is June (6mi).
The months with the lowest visibility are January, February and April (4mi).
Wortmanns, Alaska, USA
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