When to go · Foster City
Foster City in April
Great month. Inside Foster City's best window: Apr–Jun, Sep–Oct.
Key facts
- Verdict
- Great
- Temperature
- 19°C (66°F)66°F (19°C) / 9°C (48°F)48°F (9°C)
- average high / low
- Rain days
- 6
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Inside Foster City's best window: Apr–Jun, Sep–Oct.
Is another month better than April?
No other month rates higher than April for Foster City in this guide.
Weather in April
- Foster CityHighs around 19 °C (66 °F), lows around 9 °C (48 °F), rain on about 6 daysHighs around 66 °F (19 °C), lows around 48 °F (9 °C), rain on about 6 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.
Spring break big impact
March–April · United States
Students fill Florida, Texas and Mexico beaches; parks busy.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.
Compare two months
Weather, crowds and prices for any two months in Foster City, side by side.
Verdict
Apr: Great
May: Great
Daytime high
Apr: 19 °C (66 °F)66 °F (19 °C)
May: 21 °C (70 °F)70 °F (21 °C)
Night low
Apr: 9 °C (48 °F)48 °F (9 °C)
May: 11 °C (52 °F)52 °F (11 °C)
Rain days
Apr: 6
May: 4 (better)
Crowds
Apr: Medium
May: Medium
Prices
Apr: Medium
May: Medium
Festivals listed
Apr: 1
May: 1
April: Inside Foster City's best window: Apr–Jun, Sep–Oct.
May: Inside Foster City's best window: Apr–Jun, Sep–Oct.
Foster City: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings