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
Lewiston in October experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 77.9°F (25.5°C) in September to an enjoyable 66°F (18.9°C). Lewiston observes a distinct decrease from peak daytime temperatures, with an average low-temperature of 40.8°F (4.9°C) throughout the month of October.Humidity
In Lewiston, the average relative humidity in October is 64%.Rainfall
In Lewiston, in October, during 7.6 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Lewiston, during the entire year, the rain falls for 119.2 days and collects up to 33.35" (847mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In October, the average length of the day is 11h and 6min.On the first day of the month, sunrise is at 7:08 am and sunset at 6:52 pm. On the last day of October, sunrise is at 7:41 am and sunset at 6:08 pm PDT.
Sunshine
In October, the average sunshine is 6.7h.UV index
In Lewiston, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 3 during October translates into the following guidance:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
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 is the sunrise / sunset in October?
How long on average sun shines in October?
How high is the UV index in October?
Average temperature in October
Lewiston, CA
- Average high temperature in October: 66°F
The warmest months (with the highest average high temperature) are July and August (84.6°F).
The month with the lowest average high temperature is December (45°F).
- Average low temperature in October: 40.8°F
The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is December (30°F).
Average pressure in October
Lewiston, CA
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in October
Lewiston, CA
- Average wind speed in October: 4.1mph
The windiest months (with the highest average wind speed) are March and April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in October
Lewiston, CA
- Average humidity in October: 64%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is August (54%).
Average rainfall in October
Lewiston, CA
- Average rainfall in October: 1.85"
The wettest month (with the highest rainfall) is December (6.14").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in October
Lewiston, CA
- Average rainfall days in October: 7.6 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in October
Lewiston, CA
- Average snowfall in October: 0"
The month with the highest snowfall is February (8.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Lewiston, CA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Lewiston, CA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in October: 6h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in October
Lewiston, CA
- Average sunshine days in October: 22.1 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in October
Lewiston, CA
- 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
Lewiston, CA
- Average cloud cover in October: 26
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in October
Lewiston, CA
- Average visibility in October: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are March and December (4mi).
Lewiston, California, USA
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