October weather forecastRosemont, CA
October
Weather in October
October, the same as September, is a moderately hot autumn month in Rosemont, California, with an average temperature varying between 53.6°F (12°C) and 76.1°F (24.5°C).Temperature
As Rosemont, California, enters October, the average high-temperature decreases from the a hot 88.3°F (31.3°C) of September to a warm 76.1°F (24.5°C). In Rosemont, the October nights descend to a significantly cooler average of 53.6°F (12°C) compared to daytime highs.Humidity
The average relative humidity in October in Rosemont is 49%.Rainfall
In Rosemont, California, during October, the rain falls for 3.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Rosemont, during the entire year, the rain falls for 70.5 days and collects up to 15.04" (382mm) of precipitation.Daylight
In October, the average length of the day in Rosemont is 11h and 11min.On the first day of the month, sunrise is at 7:02 am and sunset at 6:47 pm. On the last day of October, in Rosemont, sunrise is at 7:31 am and sunset at 6:06 pm PDT.
Sunshine
In October, the average sunshine is 7.2h.UV index
In October, the average daily maximum UV index in Rosemont, California, is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in October converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Rosemont, CA
- Average high temperature in October: 76.1°F
The warmest month (with the highest average high temperature) is July (94.5°F).
The month with the lowest average high temperature is December (54.3°F).
- Average low temperature in October: 53.6°F
The month with the highest average low temperature is August (59.9°F).
The coldest months (with the lowest average low temperature) are January and December (40.8°F).
Average pressure in October
Rosemont, 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 (29.9"Hg).
Average wind speed in October
Rosemont, CA
- Average wind speed in October: 4.4mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity in October
Rosemont, CA
- Average humidity in October: 49%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are July and September (44%).
Average rainfall in October
Rosemont, CA
- Average rainfall in October: 0.79"
The wettest month (with the highest rainfall) is March (2.72").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in October
Rosemont, CA
- Average rainfall days in October: 3.5 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is July (1 days).
Average daylight in October /
Average sunshine in October
Rosemont, CA
- Average daylight in October: 11h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in October: 7h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in October
Rosemont, CA
- Average sunshine days in October: 26.7 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (17.6 days).
Average UV index in October
Rosemont, CA
- Average UV index in October: 4
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in October
Rosemont, CA
- Average cloud cover in October: 15
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in October
Rosemont, 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).





