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
Grass Valley's weather changes with the onset of October, slightly falling from a pleasant 73.2°F (22.9°C) in September to a mild 58.8°F (14.9°C). Throughout the month of October, the average temperature in Grass Valley, Oregon, dips to a frosty 43.7°F (6.5°C) at night.Humidity
In Grass Valley, the average relative humidity in October is 65%.Rainfall
In Grass Valley, in October, it is raining for 10.5 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 112.2 rainfall days, and 10.91" (277mm) of precipitation is accumulated.Snowfall
In Grass Valley, Oregon, snow does not fall in April through October.Daylight
In Grass Valley, the average length of the day in October is 10h and 56min.On the first day of October, sunrise is at 7:02 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:51 pm PDT.
Sunshine
The average sunshine in October is 6.5h.UV index
In Grass Valley, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In October, the UV index of 3 transforms into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the average humidity in October?
How much does it rain in October?
When it does not snow?
Does it snow in October?
What is the average length of the day in October?
When is the sunrise / sunset in October?
How long on average sun shines in October?
What is the UV index reading in October?
Average temperature in October
Grass Valley, OR
- Average high temperature in October: 58.8°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (37.4°F).
- Average low temperature in October: 43.7°F
The month with the highest average low temperature is August (57.9°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in October
Grass Valley, OR
- Average pressure in October: 30.05"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in October
Grass Valley, OR
- Average wind speed in October: 5.4mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5mph).
Average humidity in October
Grass Valley, OR
- Average humidity in October: 65%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (46%).
Average rainfall in October
Grass Valley, OR
- Average rainfall in October: 0.94"
The wettest month (with the highest rainfall) is January (1.93").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in October
Grass Valley, OR
- Average rainfall days in October: 10.5 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (2.9 days).
Average snowfall in October
Grass Valley, OR
- Average snowfall in October: 0"
The month with the highest snowfall is February (2.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Grass Valley, OR
- Average snowfall days in October: 0 days
The months with the highest number of snowfall days are February and December (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Grass Valley, OR
- Average daylight in October: 10h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in October: 6h and 3min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in October
Grass Valley, OR
- Average sunshine days in October: 18.5 days
The month with the most sunshine days is July (27 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in October
Grass Valley, OR
- Average UV index in October: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Grass Valley, OR
- Average cloud cover in October: 30
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in October
Grass Valley, OR
- Average visibility in October: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Grass Valley, Oregon, USA
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