Ontario
California, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Ontario, CA

A clear street near the luxurious residential estate in Ontario, California, with a scenic background of a hilly landscape, the clear blue sky
A clear street near the luxurious residential estate in Ontario, California, with a scenic background of a hilly landscape, the clear blue sky
October, like September, in Ontario, California, is another warm autumn month, with average temperature varying between 55.2°F (12.9°C) and 80.6°F (27°C).

Temperature

In Ontario, the average high-temperature marginally drops, from a hot 89.1°F (31.7°C) in September, to a warm 80.6°F (27°C). In Ontario, the average low-temperature is 55.2°F (12.9°C).

Rainfall

During October, Ontario regularly aggregates up to 0.6" (16.3mm) of precipitation. During the entire year, Ontario aggregates up to 15" (382mm) of precipitation.

Daylight

In Ontario, the average length of the day in October is 11.3h.

What is the temperature in October in Ontario?

In Ontario, in October, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 55.2°F (12.9°C).

How much does it rain in Ontario in October?

During October, Ontario regularly aggregates up to 0.6" (16.3mm) of precipitation.

How many hours of daylight does Ontario have in October?

In Ontario, California, the average length of the day in October is 11.3h.
Average temperature in October - Ontario, CA
  • Average high temperature in October: 80.6°F

The warmest month (with the highest average high temperature) is August (93.6°F).
The month with the lowest average high temperature is January (65.2°F).

  • Average low temperature in October: 55.2°F

The month with the highest average low temperature is August (64.7°F).
The coldest month (with the lowest average low temperature) is December (42.7°F).

Average rainfall in October - Ontario, CA
  • Average rainfall in October: 0.6"

The wettest month (with the highest rainfall) is February (3.4").
Driest months (with the lowest rainfall) are June, July and August (0.1").

Average daylight in October - Ontario, CA
  • Average daylight in October: 11.3h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).