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

September weather forecast and climate
Highland, CA

The first month of the autumn, September, is also a sweltering month in Highland, California, with temperature in the range of an average high of 99°F (37.2°C) and an average low of 64°F (17.8°C).


In Highland, California, the average high-temperature in September is almost the same as in August - a still sweltering 99°F (37.2°C). In Highland, the average low-temperature is 64°F (17.8°C).


In September, the average length of the day is 12.4h.

What is the temperature in September in Highland?

In September, the average high-temperature is 99°F (37.2°C), and the average low-temperature is 64°F (17.8°C).

How many hours of daylight does Highland have in September?

In Highland, the average length of the day in September is 12.4h.
Average temperature in September - Highland, CA
  • Average high temperature in September: 99°F

The warmest month (with the highest average high temperature) is August (101°F).
Months with the lowest average high temperature are January and December (70°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is August (66°F).
The coldest month (with the lowest average low temperature) is January (42°F).

Average daylight in September - Highland, 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).