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
Holy Cross's transition into September involves a shift in temperature, receding from a moderate 60.4°F (15.8°C) in August to a fresh 50.9°F (10.5°C). Holy Cross's average low-temperature is measured at a cold 38.3°F (3.5°C) during September.Humidity
The average relative humidity in September is 82%.Rainfall
In Holy Cross, in September, during 15.5 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 122.8 rainfall days, and 17.44" (443mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. 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 September, sunrise is at 7:30 am and sunset at 9:46 pm. On the last day of the month, sunrise is at 8:46 am and sunset at 8:11 pm AKDT.
Sunshine
In Holy Cross, the average sunshine in September is 5h.UV index
In September, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during September morphs into the following directions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When does it start snowing in Holy Cross?
How many hours of daylight does Holy Cross have in September?
When are sunrise and sunset in September in Holy Cross?
How long on average sun shines in September?
What is the UV index reading in September?
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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