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 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 onset of October entails a temperature shift, as the average high-temperature decreases from a tropical 90.9°F (32.7°C) in September to a moderately hot 77.9°F (25.5°C). Throughout October nights, a significant departure from daytime temperatures, with an average low of 54.5°F (12.5°C), is recognized.Humidity
In Riverdale Park, the average relative humidity in October is 48%.Rainfall
In Riverdale Park, in October, it is raining for 2.5 days, with typically 0.35" (9mm) of accumulated precipitation. In Riverdale Park, during the entire year, the rain falls for 54.3 days and collects up to 6.54" (166mm) of precipitation.Daylight
In October, the average length of the day is 11h and 13min.On the first day of October, sunrise is at 7:00 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 6:06 pm PDT.
Sunshine
The average sunshine in October is 7.4h.UV index
In Riverdale Park, the average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In October, the maximum UV index of 5 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A hat with a broad brim is indispensable, filtering out up to half 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 much does it rain 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?
How high is the UV index in October in Riverdale Park?
Average temperature in October
Riverdale Park, CA
- Average high temperature in October: 77.9°F
The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in October: 54.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest months (with the lowest average low temperature) are January and December (41.9°F).
Average pressure in October
Riverdale Park, CA
- Average pressure in October: 29.99"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Riverdale Park, CA
- Average wind speed in October: 5.7mph
The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).
Average humidity in October
Riverdale Park, CA
- Average humidity in October: 48%
The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).
Average rainfall in October
Riverdale Park, CA
- Average rainfall in October: 0.35"
The wettest month (with the highest rainfall) is March (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Riverdale Park, CA
- Average rainfall days in October: 2.5 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in October /
Average sunshine in October
Riverdale Park, CA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in October: 7h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in October
Riverdale Park, CA
- Average sunshine days in October: 27.7 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (19.6 days).
Average UV index in October
Riverdale Park, CA
- Average UV index in October: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in October
Riverdale Park, CA
- Average cloud cover in October: 13
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in October
Riverdale Park, CA
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Riverdale Park, California, USA
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