Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The onset of October results in a small decrease in the average high-temperature, moderately receding from a cool 54.3°F (12.4°C) in September to a frosty 46°F (7.8°C). Saint John Harbor consistently logs a low temperature averaging a wintry 39.7°F (4.3°C) during October, a modest drop from daytime temperatures.Humidity
In Saint John Harbor, the average relative humidity in October is 82%.Rainfall
The month with the most rainfall is October, when the rain falls for 20.1 days and typically aggregates up to 6.3" (160mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.2 snowfall days, it receives 0.31" (8mm) of snow. Throughout the year, there are 47.5 snowfall days, and 58.23" (1479mm) of snow is accumulated.Daylight
In Saint John Harbor, the average length of the day in October is 10h and 21min.On the first day of October, sunrise is at 6:56 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:10 pm AKDT.
Sunshine
In October, the average sunshine is 4.2h.UV index
In October, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in October, converts into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average October temperature?
What is the average humidity in October?
What is the rainiest month?
How many days does it rain in October?
When does it start snowing?
How many hours of daylight does Saint John Harbor have in October?
When are sunrise and sunset in October?
How long on average sun shines in October?
How high is the UV index in October?
Average temperature in October
Saint John Harbor, AK
- Average high temperature in October: 46°F
The warmest month (with the highest average high temperature) is July (59.7°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in October: 39.7°F
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).
Average pressure in October
Saint John Harbor, AK
- Average pressure in October: 29.87"Hg
The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).
Average wind speed in October
Saint John Harbor, AK
- Average wind speed in October: 6.7mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (3.9mph).
Average humidity in October
Saint John Harbor, AK
- Average humidity in October: 82%
The months with the highest relative humidity are January and August (86%).
The month with the lowest relative humidity is May (81%).
Average rainfall in October
Saint John Harbor, AK
- Average rainfall in October: 6.3"
The wettest month (with the highest rainfall) is October (6.3").
The driest month (with the least rainfall) is May (2.01").
Average rainfall days in October
Saint John Harbor, AK
- Average rainfall days in October: 20.1 days
The month with the highest number of rainy days is October (20.1 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in October
Saint John Harbor, AK
- Average snowfall in October: 0.31"
The month with the highest snowfall is March (13.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Saint John Harbor, AK
- Average snowfall days in October: 0.2 days
The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Saint John Harbor, AK
- Average daylight in October: 10h and 2min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in October: 4h and 1min
The month with the most sunshine is May (Average sunshine: 7h and 24min).
The months with the least sunshine are January and November (Average sunshine: 3h and 24min).
Average sunshine days in October
Saint John Harbor, AK
- Average sunshine days in October: 10.1 days
The month with the most sunshine days is December (12.5 days).
The month with the least sunshine days is November (8 days).
Average UV index in October
Saint John Harbor, AK
- Average UV index in October: 2
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in October
Saint John Harbor, AK
- Average cloud cover in October: 58
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are February and May (Cloud cover 54).
Average visibility in October
Saint John Harbor, AK
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Saint John Harbor, Alaska, USA
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