October weather forecast and climate
Riverdale, CA

Weather in October

October, like September, in Riverdale, California, is another warm autumn month, with average temperature varying between 56.5°F (13.6°C) and 80.4°F (26.9°C).

Temperature

In Riverdale, the average high-temperature in October decreases, from a hot 94.1°F (34.5°C) in September, to a moderately hot 80.4°F (26.9°C). In October, the average low-temperature is 56.5°F (13.6°C).

Humidity

In Riverdale, the average relative humidity is 43%.

Rainfall

In Riverdale, California, it is raining for 3.4 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, in Riverdale, there are 58.2 rainfall days, and 9.29" (236mm) of precipitation is accumulated.

Daylight

The average length of the day in Riverdale is 11.2h.

Sunshine

In October, the average sunshine in Riverdale is 7.9h.

UV index

The average daily maximum UV index in Riverdale is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in October in Riverdale?

The average high-temperature, in October, in Riverdale, is 80.4°F (26.9°C), while the average low-temperature is 56.5°F (13.6°C).

What is the average humidity in October in Riverdale?

In Riverdale, the average relative humidity in October is 43%.

How many days does it rain in October in Riverdale?

In Riverdale, in October, it is raining for 3.4 days, with typically 0.47" (12mm) of accumulated precipitation.

How many hours of daylight does Riverdale have in October?

In Riverdale, the average length of the day in October is 11.2h.

How many hours of sunshine does Riverdale have in October?

The average sunshine in October is 7.9h.

What is the UV index intensity in October in Riverdale?

The average daily maximum UV index in October in Riverdale, California, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in October
Riverdale, CA

Average temperature in October - Riverdale, CA
  • Average high temperature in October: 80.4°F

The warmest month (with the highest average high temperature) is July (102.2°F).
The month with the lowest average high temperature is December (57.2°F).

  • Average low temperature in October: 56.5°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is December (43°F).

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Average pressure in October
Riverdale, CA

Average pressure in October - Riverdale, CA
  • Average pressure in October: 29.98"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.89").

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Average wind speed in October
Riverdale, CA

Average wind speed in October - Riverdale, CA
  • Average wind speed in October: 5.4mph

The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest months (with the lowest average wind speed) are January and November (4.8mph).

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Average humidity in October
Riverdale, CA

Average humidity in October - Riverdale, CA
  • Average humidity in October: 43%

Months with the highest relative humidity are January and December (66%).
The month with the lowest relative humidity is July (30%).

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Average rainfall in October
Riverdale, CA

Average rainfall in October - Riverdale, CA
  • Average rainfall in October: 0.47"

The wettest months (with the highest rainfall) are January, February and March (1.54").
The driest month (with the least rainfall) is August (0.08").

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Average rainfall days in October
Riverdale, CA

Average rainfall days in October - Riverdale, CA
  • Average rainfall days in October: 3.4 days

The month with the highest number of rainy days is March (9.6 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in October /
Average sunshine in October
Riverdale, CA

Average daylight in October / Average sunshine in October - Riverdale, CA
  • Average daylight in October: 11.2h

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in October: 7.9h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in October
Riverdale, CA

Average sunshine days in October - Riverdale, CA
  • Average sunshine days in October: 27 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is February (19.4 days).

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Average UV index in October
Riverdale, CA

Average UV index in October - Riverdale, CA
  • Average UV index in October: 5

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 3).

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Average cloud cover in October
Riverdale, CA

Average cloud cover in October - Riverdale, CA
  • Average cloud cover in October: 11

Months with the most cloud cover are March and December (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in October
Riverdale, CA

Average visibility in October - Riverdale, CA
  • Average visibility in October: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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