October weather forecastSaint Helens, OR
October
Weather in October
October, the same as September, in Saint Helens, Oregon, is a moderate autumn month, with an average temperature fluctuating between 58.1°F (14.5°C) and 41.7°F (5.4°C).Temperature
The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from an agreeable 69.3°F (20.7°C) in September to a mild 58.1°F (14.5°C). Saint Helens observes an average nighttime low-temperature of 41.7°F (5.4°C) during the month of October.Humidity
In October, the average relative humidity is 81%.Rainfall
In Saint Helens, in October, during 13.6 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Saint Helens, during the entire year, the rain falls for 149 days and collects up to 19.37" (492mm) of precipitation.Snowfall
In Saint Helens, snow does not fall in May through October.Daylight
The average length of the day in October is 10h and 55min.On the first day of October, sunrise is at 7:10 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:58 pm PDT.
Sunshine
In Saint Helens, the average sunshine in October is 5.1h.UV index
In Saint Helens, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 3 in October translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Saint Helens, OR
- Average high temperature in October: 58.1°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in October: 41.7°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (31.8°F).
Average pressure in October
Saint Helens, OR
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in October
Saint Helens, OR
- Average wind speed in October: 4.3mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in October
Saint Helens, OR
- Average humidity in October: 81%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (72%).
Average rainfall in October
Saint Helens, OR
- Average rainfall in October: 2.32"
The wettest month (with the highest rainfall) is January (2.64").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in October
Saint Helens, OR
- Average rainfall days in October: 13.6 days
The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.9 days).
Average snowfall in October
Saint Helens, OR
- Average snowfall in October: 0"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Saint Helens, OR
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Saint Helens, OR
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in October: 5h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 42min).
Average sunshine days in October
Saint Helens, OR
- Average sunshine days in October: 16.3 days
The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (12.1 days).
Average UV index in October
Saint Helens, OR
- Average UV index in October: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in October
Saint Helens, OR
- Average cloud cover in October: 50
The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in October
Saint Helens, OR
- Average visibility in October: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
