Moreno Valley (CA) Temperature by Month
Moreno Valley, California, United States of America has an average annual maximum temperature of 26°C (79°F), ranging from 18°C (64°F) in December to 35°C (95°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Moreno Valley Monthly Temperatures
The climate in Moreno Valley is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 17°C (63°F) in August to 5°C (41°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Moreno Valley by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. August, the city's warmest month, averages 351 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Moreno Valley 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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Moreno Valley vs World: Temperature Compared
Moreno Valley'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:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
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.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Moreno Valley's weather — including monthly rainfall, sunshine hours, and humidity — visit our Moreno Valley climate page.
