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Riverside (CA) Temperatures: Monthly Averages and Year-Round Insights

On this page, we’ll explore Riverside’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.

Monthly Temperature Averages

Visitors to Riverside can expect significant temperature changes throughout the year. Typically, maximum daytime temperatures range from a very warm 35°C in August to a pleasant 19°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 6°C, particularly during the colder months.

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

The minimum temperature is commonly observed between 4 AM and 6 AM, with the maximum occurring around 3 PM, when the sun’s strength is at its peak. August, the city’s warmest month, sees 351 hours of sunshine.

The chart below shows the average temperature throughout the year:

January, the city’s coldest month, receives about 31 mm of rainfall spread over roughly 4 days. For more information, please visit our Riverside Precipitation page.

Annual Temperatures in the United States of America Compared

The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.

Annual
Map not visible? Whoops sorry! Please refresh the page.
Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

Riverside Temperatures Compared World Wide

Riverside’s average annual maximum temperature is 27°C. Let’s compare this with some popular tourist destinations:

Athens, Greece, experiences an average annual temperature of 23°C, with hot summers and mild winters typical of a Mediterranean climate.

In contrast, in Zermatt, Switzerland, the average annual temperature is significantly lower at 4°C, with mild summers and very cold winters.

Osaka, Japan, offers a similar climate to Tokyo, with an average annual temperature of 22°C.

Melbourne, Australia, has a slightly cooler climate, with an average annual temperature of 20°C.

How are these Temperatures Measured?

Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.

This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.

Effects of Temperature on Weather and Climate

Temperature variations influence precipitation patterns in Amsterdam:

Rainfall: Warm air holds more moisture, leading to heavier rain during warmer months. However, precipitation is generally moderate year-round.

Snow: Occasional snowfall occurs in winter, though it rarely lasts very long.

For more detailed information about Riverside’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Riverside climate page.


Current temperature in Riverside (CA)

Sat   Dec 28
21°C | 7°C
NW 2 m/s
broken clouds and no rain

broken clouds and no rain

Sun   Dec 29
21°C | 7°C
NW 3 m/s
clear and no rain

clear and no rain

Mon   Dec 30
21°C | 6°C
W 3 m/s
clear and no rain

clear and no rain

Interested in more climate information?

This site provides you with all the information you need about the climate in Riverside.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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