October weather forecastChehalis, WA
October
Weather in October
October, the same as September, in Chehalis, Washington, is another refreshing autumn month, with an average temperature varying between 42.1°F (5.6°C) and 58.8°F (14.9°C).Temperature
October's arrival coincides with a drop in the average high-temperature, decreasing from September's agreeable 70.3°F (21.3°C) to a mild 58.8°F (14.9°C). An average low-temperature of 42.1°F (5.6°C) is observed during October nights in Chehalis.Humidity
In October, the average relative humidity is 85%.Rainfall
In October, in Chehalis, the rain falls for 16.7 days. Throughout October, 4.09" (104mm) of precipitation is accumulated. In Chehalis, during the entire year, the rain falls for 185.5 days and collects up to 36.1" (917mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In October, the average length of the day in Chehalis is 10h and 52min.On the first day of October, sunrise is at 7:11 am and sunset at 6:50 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:57 pm PDT.
Sunshine
In Chehalis, the average sunshine in October is 4.9h.UV index
In October, the average daily maximum UV index in Chehalis is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 3 during October translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Chehalis, WA
- Average high temperature in October: 58.8°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in October: 42.1°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure in October
Chehalis, WA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed in October
Chehalis, WA
- Average wind speed in October: 3.9mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in October
Chehalis, WA
- Average humidity in October: 85%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall in October
Chehalis, WA
- Average rainfall in October: 4.09"
The wettest month (with the highest rainfall) is January (5.51").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in October
Chehalis, WA
- Average rainfall days in October: 16.7 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall in October
Chehalis, WA
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Chehalis, WA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (3.5 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
Chehalis, WA
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in October: 4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in October
Chehalis, WA
- Average sunshine days in October: 12.9 days
The months with the most sunshine days are July and August (20.8 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in October
Chehalis, WA
- Average UV index in October: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Chehalis, WA
- Average cloud cover in October: 52
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in October
Chehalis, WA
- Average visibility in October: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
