September weather forecastMud Bay, AK
September
Weather in September
The first month of the autumn, September, is also a frosty month in Mud Bay, Alaska, with an average temperature ranging between max 47.3°F (8.5°C) and min 38.7°F (3.7°C).Temperature
In Mud Bay, the average high-temperature in September gently drops from a fresh 55°F (12.8°C) in August to a frosty 47.3°F (8.5°C). Mud Bay encounters a negligible difference from daytime peaks throughout the September nights, with a low-temperature average of 38.7°F (3.7°C).Humidity
In September, the average relative humidity is 84%.Rainfall
In Mud Bay, during September, the rain falls for 19.5 days and regularly aggregates up to 4.65" (118mm) of precipitation. Throughout the year, there are 200.4 rainfall days, and 48.03" (1220mm) of precipitation is accumulated.Snowfall
In Mud Bay, Alaska, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 48min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:36 pm AKDT.
Sunshine
In September, the average sunshine is 6.4h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 2 in September translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mud Bay, AK
- Average high temperature in September: 47.3°F
The warmest month (with the highest average high temperature) is July (56.5°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in September: 38.7°F
The month with the highest average low temperature is August (44.1°F).
The coldest month (with the lowest average low temperature) is February (12.4°F).
Average pressure in September
Mud Bay, AK
- Average pressure in September: 29.87"Hg
The month with the highest atmospheric pressure is July (30.01"Hg).
The month with the lowest atmospheric pressure is November (29.81"Hg).
Average wind speed in September
Mud Bay, AK
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is May (4.7mph).
Average humidity in September
Mud Bay, AK
- Average humidity in September: 84%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Mud Bay, AK
- Average rainfall in September: 4.65"
The wettest month (with the highest rainfall) is November (5.87").
The driest month (with the least rainfall) is June (2.2").
Average rainfall days in September
Mud Bay, AK
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in September
Mud Bay, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (21.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mud Bay, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mud Bay, AK
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 6h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in September
Mud Bay, AK
- Average sunshine days in September: 8.2 days
The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is June (6.3 days).
Average UV index in September
Mud Bay, AK
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Mud Bay, AK
- Average cloud cover in September: 59
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in September
Mud Bay, AK
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
