Roseville (CA) Temperature by Month
The average annual maximum temperature in Roseville, California, United States of America is 24°C (75°F), with daytime highs ranging from 13°C (55°F) in December to 35°C (95°F) in July. This page covers monthly averages, day-night differences, and how Roseville compares to cities worldwide.
Roseville Monthly Temperatures
Visitors to Roseville will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 16°C (61°F) in July to 3°C (37°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Roseville by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 440 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Roseville 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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Roseville vs World: Temperature Compared
Roseville's average annual maximum temperature is 24°C (75°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Roseville?
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 Roseville, December is the coolest month, with average highs of 13°C (55°F) and humidity around 83% — considered very high. In July, the warmest month, temperatures average 35°C (95°F) with 53% humidity — conditions that feel moderate. 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 Roseville's weather — including monthly rainfall, sunshine hours, and humidity — visit our Roseville climate page.
