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 suggests a modest reduction in the average high-temperature, shifting from a mild 60.4°F (15.8°C) in August to a cool 50.9°F (10.5°C). In the month of September, the temperature in Holy Cross, Alaska, generally rests at an average low of 38.3°F (3.5°C).Humidity
In Holy Cross, the average relative humidity in September is 82%.Rainfall
In September, in Holy Cross, the rain falls for 15.5 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. In Holy Cross, during the entire year, the rain falls for 122.8 days and collects up to 17.44" (443mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Holy Cross. Throughout September, in the average 1.3 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, there are 111.6 snowfall days, and 51.93" (1319mm) of snow is accumulated.Daylight
The average length of the day in September in Holy Cross is 12h and 53min.On the first day of the month, sunrise is at 7:30 am and sunset at 9:46 pm. On the last day of September, in Holy Cross, Alaska, sunrise is at 8:46 am and sunset at 8:11 pm AKDT.
Sunshine
In September, the average sunshine is 5h.UV index
The average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 2 during September leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the average September temperature in Holy Cross?
What is the average humidity in September in Holy Cross?
How many days does it rain in September in Holy Cross?
When does it start snowing in Holy Cross?
What is the average length of the day in September in Holy Cross?
When is the sunrise / sunset in September in Holy Cross?
How many hours of sunshine does Holy Cross have in September?
What is the UV index intensity in September in Holy Cross?
Average temperature in September
Holy Cross, AK
- Average high temperature in September: 50.9°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The month with the lowest average high temperature is January (6.4°F).
- Average low temperature in September: 38.3°F
The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is January (-3.1°F).
Average pressure in September
Holy Cross, AK
- Average pressure in September: 29.73"Hg
The month with the highest atmospheric pressure is July (29.91"Hg).
The month with the lowest atmospheric pressure is October (29.7"Hg).
Average wind speed in September
Holy Cross, AK
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
Holy Cross, AK
- Average humidity in September: 82%
The months with the highest relative humidity are January, February, March and December (95%).
The month with the lowest relative humidity is June (63%).
Average rainfall in September
Holy Cross, AK
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (2.28").
The driest month (with the least rainfall) is March (0.94").
Average rainfall days in September
Holy Cross, AK
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is August (20.8 days).
The months with the least rainy days are February and December (3 days).
Average snowfall in September
Holy Cross, AK
- Average snowfall in September: 0.35"
The month with the highest snowfall is February (10.24").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Holy Cross, AK
- Average snowfall days in September: 1.3 days
The month with the highest number of snowfall days is March (18.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Holy Cross, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 42min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in September: 5h and 0min
The month with the most sunshine is June (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Holy Cross, AK
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is January (16.5 days).
The month with the least sunshine days is August (8.1 days).
Average UV index in September
Holy Cross, AK
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Holy Cross, AK
- Average cloud cover in September: 61
The month with the most cloud cover is April (Cloud cover 71).
The month with the least cloud cover is June (Cloud cover 48).
Average visibility in September
Holy Cross, AK
- Average visibility in September: 5mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are February, March, April and December (3mi).
Holy Cross, Alaska, USA
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