October weather forecastRancho Cucamonga, CA
October
Weather in October
October, like September, in Rancho Cucamonga, California, is a moderately hot autumn month, with an average temperature varying between 57.6°F (14.2°C) and 79.2°F (26.2°C).Temperature
The shift from September to October involves a decrease in the average high-temperature, from a tropical 88.3°F (31.3°C) to a moderately hot 79.2°F (26.2°C). Rancho Cucamonga experiences a dramatic descent in temperature during October, with the average nighttime reading settling at a mild 57.6°F (14.2°C).Humidity
In October, the average relative humidity is 45%.Rainfall
In Rancho Cucamonga, during October, the rain falls for 2.1 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Rancho Cucamonga, during the entire year, the rain falls for 42.3 days and collects up to 4.53" (115mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In Rancho Cucamonga, the average length of the day in October is 11h and 19min.On the first day of the month, sunrise is at 6:45 am and sunset at 6:34 pm. On the last day of October, sunrise is at 7:09 am and sunset at 5:58 pm PDT.
Sunshine
In Rancho Cucamonga, the average sunshine in October is 8.9h.UV index
In October, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 5 during October leads to these instructions:
Ensure safety - Recommendations to avert sunburn are presented. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Rancho Cucamonga, CA
- Average high temperature in October: 79.2°F
The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in October: 57.6°F
The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).
Average pressure in October
Rancho Cucamonga, CA
- Average pressure in October: 29.94"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in October
Rancho Cucamonga, CA
- Average wind speed in October: 4.8mph
The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in October
Rancho Cucamonga, CA
- Average humidity in October: 45%
The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).
Average rainfall in October
Rancho Cucamonga, CA
- Average rainfall in October: 0.16"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in October
Rancho Cucamonga, CA
- Average rainfall days in October: 2.1 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days in October
Rancho Cucamonga, CA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in October /
Average sunshine in October
Rancho Cucamonga, CA
- Average daylight in October: 11h and 18min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in October: 8h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in October
Rancho Cucamonga, CA
- Average sunshine days in October: 27.4 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (22.8 days).
Average UV index in October
Rancho Cucamonga, CA
- Average UV index in October: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in October
Rancho Cucamonga, CA
- Average cloud cover in October: 9
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in October
Rancho Cucamonga, 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).
