Ramona (CA) Temperature by Month
The average annual maximum temperature in Ramona, California, United States of America is 25°C (77°F), with daytime highs ranging from 18°C (64°F) in December to 33°C (91°F) in August. This page covers monthly averages, day-night differences, and how Ramona compares to cities worldwide.
Ramona Monthly Temperatures
In Ramona, temperatures can shift dramatically between very warm in summer and pleasant in winter. Nights follow the same pattern, with lows ranging from 15°C (59°F) in August to 3°C (37°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Ramona by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 295 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Ramona 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.
very warm
warm
pleasant
moderate
cold
very cold
Ramona vs World: Temperature Compared
Ramona's average annual maximum temperature is 25°C (77°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
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 Ramona?
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 Ramona, December is the coolest month, with average highs of 18°C (64°F) and humidity around 64% — considered high. In August, the warmest month, temperatures average 33°C (91°F) with 74% 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.
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 Ramona's weather — including monthly rainfall, sunshine hours, and humidity — visit our Ramona climate page.
