When to go · San Dimas
San Dimas in August
Great month. Inside San Dimas's best window: Jun–Sep (waterpark season).
Key facts
- Verdict
- Great
- Temperature
- 33°C (91°F)91°F (33°C) / 18°C (64°F)64°F (18°C)
- average high / low
- Rain days
- 0
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Inside San Dimas's best window: Jun–Sep (waterpark season).
Is another month better than August?
No other month rates higher than August for San Dimas in this guide.
Weather in August
- San DimasHighs around 33 °C (91 °F), lows around 18 °C (64 °F), rain on about 0 daysHighs around 91 °F (33 °C), lows around 64 °F (18 °C), rain on about 0 days
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in San Dimas, side by side.
Verdict
Aug: Great
Jun: Great
Daytime high
Aug: 33 °C (91 °F)91 °F (33 °C)
Jun: 29 °C (84 °F)84 °F (29 °C)
Night low
Aug: 18 °C (64 °F)64 °F (18 °C)
Jun: 16 °C (61 °F)61 °F (16 °C)
Rain days
Aug: 0 (better)
Jun: 1
Crowds
Aug: High
Jun: High
Prices
Aug: High
Jun: High
Festivals listed
Aug: 0
Jun: 0
August: Inside San Dimas's best window: Jun–Sep (waterpark season).
June: Inside San Dimas's best window: Jun–Sep (waterpark season).
San Dimas: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen