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

On this page, we’ll explore San Ramon’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

With significant temperature fluctuations, San Ramon enjoys distinct seasons year-round. Typically, maximum daytime temperatures range from a very warm 30°C in July to a mild 14°C in the coolest month, December. Nights are cooler, with temperatures generally dropping to 4°C, particularly during the colder months.

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

The lowest temperatures typically occur between 4 AM and 6 AM, while the peak temperatures are generally observed around 3 PM, when the sun's heating is most intense. July, the city’s warmest month, enjoys 313 hours of sunshine.

The chart below shows the average temperature throughout the year:

December, the city’s coldest month, receives about 111 mm of rainfall spread over roughly 13 days. For more information, please visit our San Ramon 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

San Ramon Temperatures Compared World Wide

San Ramon’s average annual maximum temperature is 22°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.

Meanwhile, Queenstown, New Zealand, the average annual temperature is significantly lower at 10°C, with mild summers and cold winters.

Meanwhile, New York City, USA, experiences a more pronounced seasonal variation with an average annual temperature of 17°C.

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

How does the temperature feel?

Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.

In San Ramon, during the coolest month, December, you will experience 78% humidity, which is considered high. This is accompanied by an average maximum temperature of 14°C. In the warmest month, July, the humidity is 75% combined with an average maximum temperature of 30°C, which creates a high-feel temperature. Explore our detailed page on humidity levels for further details.

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 San Ramon’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our San Ramon climate page.


Current temperature in San Ramon (CA)

Sat   Dec 28
17°C | 10°C
SW 4 m/s
0.8 mm
broken clouds and  chance of rain

broken clouds and chance of rain

Sun   Dec 29
15°C | 6°C
SW 7 m/s
11 mm
partly cloudy and rain

partly cloudy and rain

Mon   Dec 30
14°C | 5°C
NW 4 m/s
almost clear and no rain

almost clear and no rain

Interested in more climate information?

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

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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