When to go · San Ramon
San Ramon in December
Avoid month. Listed as a month to avoid: Jul–Aug (inland heat), Dec–Feb (rain and fog).
Key facts
- Verdict
- Avoid
- Temperature
- 15°C (59°F)59°F (15°C) / 4°C (39°F)39°F (4°C)
- average high / low
- Rain days
- 7
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Jul–Aug (inland heat), Dec–Feb (rain and fog).
Is another month better than December?
December is rated avoid. These months rate higher:
Weather in December
- San RamonHighs around 15 °C (59 °F), lows around 4 °C (39 °F), rain on about 7 daysHighs around 59 °F (15 °C), lows around 39 °F (4 °C), rain on about 7 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Christmas Day big impact
25 Dec · United States
Most businesses closed; flights full from about 20 Dec to 2 Jan.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in San Ramon, side by side.
Verdict
Dec: Avoid
Apr: Great (better)
Daytime high
Dec: 15 °C (59 °F)59 °F (15 °C)
Apr: 19 °C (66 °F)66 °F (19 °C)
Night low
Dec: 4 °C (39 °F)39 °F (4 °C)
Apr: 8 °C (46 °F)46 °F (8 °C)
Rain days
Dec: 7
Apr: 4 (better)
Crowds
Dec: High
Apr: Medium
Prices
Dec: High
Apr: Medium
Festivals listed
Dec: 1
Apr: 1
December: Listed as a month to avoid: Jul–Aug (inland heat), Dec–Feb (rain and fog).
April: Inside San Ramon's best window: Apr–Jun, Sep–Oct.
San Ramon: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings