Stevenson Ranch (CA) Temperature by Month
The average annual maximum temperature in Stevenson Ranch, California, United States of America is 26°C (79°F), with daytime highs ranging from 17°C (63°F) in December to 35°C (95°F) in August. This page covers monthly averages, day-night differences, and how Stevenson Ranch compares to cities worldwide.
Stevenson Ranch Monthly Temperatures
In Stevenson Ranch, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 17°C (63°F) in August to 7°C (45°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Stevenson Ranch by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 347 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Stevenson Ranch vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Stevenson Ranch vs World: Temperature Compared
Stevenson Ranch's average annual maximum temperature is 26°C (79°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.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Stevenson Ranch?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Stevenson Ranch, December is the coolest month, with average highs of 17°C (63°F) and humidity around 52% — considered moderate. In August, the warmest month, temperatures average 35°C (95°F) with 71% humidity — conditions that feel high. For a full picture, see our humidity page.
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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Stevenson Ranch's weather — including monthly rainfall, sunshine hours, and humidity — visit our Stevenson Ranch climate page.
