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

September weather forecast and climate
Fontana, CA

The first month of the autumn, September, is still a tropical month in Fontana, California, with average temperature fluctuating between 91.9°F (33.3°C) and 63°F (17.2°C).

Temperature

In Fontana, the average high-temperature is almost the same as in August - a hot 91.9°F (33.3°C). In September, the average low-temperature is 63°F (17.2°C).

Rainfall

During September, Fontana regularly aggregates up to 0.3" (6.6mm) of precipitation. During the entire year, Fontana aggregates up to 14.8" (375.2mm) of precipitation.

Daylight

The average length of the day in September is 12.4h.

What is the temperature in September in Fontana?

In September, in Fontana, California, the average high-temperature is 91.9°F (33.3°C), and the average low-temperature is 63°F (17.2°C).

How much does it rain in Fontana in September?

Throughout September, 0.3" (6.6mm) of precipitation is accumulated.

What is the average length of the day in September in Fontana?

The average length of the day in September is 12.4h.
Average temperature in September - Fontana, CA
  • Average high temperature in September: 92°F

The warmest month (with the highest average high temperature) is August (96°F).
The month with the lowest average high temperature is January (69°F).

  • Average low temperature in September: 63°F

The month with the highest average low temperature is August (64°F).
Coldest months (with the lowest average low temperature) are January and December (46°F).

Average rainfall in September - Fontana, CA
  • Average rainfall in September: 0.3"

Wettest months (with the highest rainfall) are January and March (3.5").
Driest months (with the lowest rainfall) are June and July (0").

Average daylight in September - Fontana, CA
  • Average daylight in September: 12.4h

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