Glen Ellen (CA) Temperature by Month

The average annual maximum temperature in Glen Ellen, California, United States of America is 22°C (72°F), with daytime highs ranging from 14°C (57°F) in December to 31°C (88°F) in July. This page covers monthly averages, day-night differences, and how Glen Ellen compares to cities worldwide.

Depending on the time of the year, temperatures range from very warm to mild in Glen Ellen. At night, minimum temperatures range from 12°C (54°F) in July to 4°C (39°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Glen Ellen by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. July, the city's warmest month, gets 306 hours of sunshine.

The chart below shows the average temperature throughout the year:

Glen Ellen's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Glen Ellen's weather, including monthly rainfall, sunshine hours, and humidity, visit our Glen Ellen climate page.