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
October is characterized by a reduction in the average high-temperature, from an agreeable 73.2°F (22.9°C) in September to a mild 58.8°F (14.9°C). Throughout October, the average low-temperature records at a frosty 43.7°F (6.5°C).Humidity
In Grass Valley, the average relative humidity in October is 65%.Rainfall
In Grass Valley, in October, during 10.5 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Grass Valley, during the entire year, the rain falls for 112.2 days and collects up to 10.91" (277mm) of precipitation.Snowfall
April through October are months without snowfall in Grass Valley.Daylight
The average length of the day in October is 10h and 56min.On the first day of October in Grass Valley, 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
The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 during October translates into the following directions:
Exercise prevention - Warding off sunburn is urged. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. 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.
Frequently asked questions
What is the temperature in October in Grass Valley?
What is the average humidity in October in Grass Valley?
How much does it rain in Grass Valley in October?
When it does not snow in Grass Valley?
Does it snow in Grass Valley in October?
How many hours of daylight does Grass Valley have in October?
When are sunrise and sunset in October in Grass Valley?
How many hours of sunshine does Grass Valley have in October?
What is the UV index intensity in October in Grass Valley?
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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