When to go · Rancho Cucamonga
Rancho Cucamonga in May
Great month. Inside Rancho Cucamonga's best window: Mar–Oct (dry, warm).
Key facts
- Verdict
- Great
- Temperature
- 26°C (79°F)79°F (26°C) / 13°C (55°F)55°F (13°C)
- average high / low
- Rain days
- 3
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Inside Rancho Cucamonga's best window: Mar–Oct (dry, warm).
Is another month better than May?
No other month rates higher than May for Rancho Cucamonga in this guide.
Weather in May
- Rancho CucamongaHighs around 26 °C (79 °F), lows around 13 °C (55 °F), rain on about 3 daysHighs around 79 °F (26 °C), lows around 55 °F (13 °C), rain on about 3 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.
Memorial Day big impact
Last Monday of May · United States
Start of summer; roads and beaches full.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Compare two months
Weather, crowds and prices for any two months in Rancho Cucamonga, side by side.
Verdict
May: Great
Mar: Great
Daytime high
May: 26 °C (79 °F)79 °F (26 °C)
Mar: 19 °C (66 °F)66 °F (19 °C)
Night low
May: 13 °C (55 °F)55 °F (13 °C)
Mar: 7 °C (45 °F)45 °F (7 °C)
Rain days
May: 3 (better)
Mar: 5
Crowds
May: Medium
Mar: Medium
Prices
May: Medium
Mar: Medium
Festivals listed
May: 1
Mar: 2
May: Inside Rancho Cucamonga's best window: Mar–Oct (dry, warm).
March: Inside Rancho Cucamonga's best window: Mar–Oct (dry, warm).
Rancho Cucamonga: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.