October weather forecast
Rancho Cucamonga, CA

Weather in October

October, like September, in Rancho Cucamonga, California, is a moderately hot autumn month, with an average temperature ranging between min 57.6°F (14.2°C) and max 79.2°F (26.2°C).

Temperature

In October, the average high-temperature drops from a hot 88.3°F (31.3°C) in September to a moderately hot 79.2°F (26.2°C). In October, the average low-temperature is 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, California, during the entire year, the rain falls for 42.3 days and collects up to 4.53" (115mm) of precipitation.

Snowfall

In Rancho Cucamonga, snow does not fall in January, March through December.

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 October, the average sunshine in Rancho Cucamonga, California, is 8.9h.

UV index

In Rancho Cucamonga, California, the average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In October, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in October in Rancho Cucamonga?

The average relative humidity in October in Rancho Cucamonga is 45%.

How much does it rain in Rancho Cucamonga in October?

In Rancho Cucamonga, in October, during 2.1 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

When it does not snow in Rancho Cucamonga?

In Rancho Cucamonga, California, snow does not fall in January, March through December.

What is the average length of the day in October in Rancho Cucamonga?

The average day length in October in Rancho Cucamonga, California, is 11h and 19min.

When is the sunrise / sunset in October in Rancho Cucamonga?

In October, on the first day of the month, sunrise is at 6:45 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:58 pm PDT.

How many hours of sunshine does Rancho Cucamonga have in October?

The average sunshine duration in October in Rancho Cucamonga, California, is 8.9h.

What is the UV index reading in October in Rancho Cucamonga?

In Rancho Cucamonga, the average daily maximum UV index in October is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Rancho Cucamonga, CA

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).

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Average pressure in October
Rancho Cucamonga, CA

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).

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Average wind speed in October
Rancho Cucamonga, CA

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).

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Average humidity in October
Rancho Cucamonga, CA

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%).

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Average rainfall in October
Rancho Cucamonga, CA

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").

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Average rainfall days in October
Rancho Cucamonga, CA

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).

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Average snowfall days in October
Rancho Cucamonga, CA

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).

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Average daylight in October /
Average sunshine in October
Rancho Cucamonga, CA

Average daylight in October / Average sunshine in October - Rancho Cucamonga, CA
  • Average daylight in October: 11h and 19min

The month with the longest days is June (Average daylight: 14h and 23min).
The month with the shortest days is December (Average daylight: 9h and 56min).

  • 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).

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Average sunshine days in October
Rancho Cucamonga, CA

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).

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Average UV index in October
Rancho Cucamonga, CA

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).

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Average cloud cover in October
Rancho Cucamonga, CA

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).

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Average visibility in October
Rancho Cucamonga, CA

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).

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