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 changeover to October signals a significant decrease in the average high-temperature, dropping from a moderately hot 75.9°F (24.4°C) in September to a moderate 60.3°F (15.7°C). In October, the average low-temperature records at a chilly 45°F (7.2°C) during the nights.Humidity
In October, the average relative humidity is 59%.Rainfall
In Grandview, in October, it is raining for 7.6 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 80.1 rainfall days, and 4.84" (123mm) of precipitation is accumulated.Snowfall
In Grandview, snow does not fall in April through October.Daylight
The average length of the day in October is 10h and 53min.On the first day of the month, sunrise is at 6:59 am and sunset at 6:38 pm. On the last day of October, sunrise is at 7:40 am and sunset at 5:45 pm PDT.
Sunshine
In Grandview, the average sunshine in October is 6.6h.UV index
In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 during October leads to these advisories:
Exercise prevention - Warding off sunburn is urged. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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 many days 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 are sunrise and sunset in October?
How long on average sun shines in October?
What is the UV index intensity in October?
Average temperature in October
Grandview, WA
- Average high temperature in October: 60.3°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in October: 45°F
The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is December (26.2°F).
Average pressure in October
Grandview, WA
- Average pressure in October: 30.04"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in October
Grandview, WA
- Average wind speed in October: 6.3mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is December (5.2mph).
Average humidity in October
Grandview, WA
- Average humidity in October: 59%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is July (37%).
Average rainfall in October
Grandview, WA
- Average rainfall in October: 0.43"
The wettest month (with the highest rainfall) is May (0.71").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in October
Grandview, WA
- Average rainfall days in October: 7.6 days
The month with the highest number of rainy days is May (9.2 days).
The month with the least rainy days is July (4 days).
Average snowfall in October
Grandview, WA
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Grandview, WA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is December (3.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in October /
Average sunshine in October
Grandview, WA
- Average daylight in October: 10h and 5min
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: 6h and 4min
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: 4h and 54min).
Average sunshine days in October
Grandview, WA
- Average sunshine days in October: 22 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (18.7 days).
Average UV index in October
Grandview, WA
- Average UV index in October: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Grandview, WA
- Average cloud cover in October: 29
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 10).
Average visibility in October
Grandview, WA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Grandview, Washington, USA
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