When to go · Diamond Bar
Diamond Bar in January
Avoid month. Listed as a month to avoid: Jul–Aug (hot), Dec–Feb (rainy).
Key facts
- Verdict
- Avoid
- Temperature
- 19°C (66°F)66°F (19°C) / 8°C (46°F)46°F (8°C)
- average high / low
- Rain days
- 6
- Crowds
- Low
- United States overall
- Prices
- Low
- United States overall
Verdict
Listed as a month to avoid: Jul–Aug (hot), Dec–Feb (rainy).
Is another month better than January?
January is rated avoid. These months rate higher:
Weather in January
- Diamond BarHighs around 19 °C (66 °F), lows around 8 °C (46 °F), rain on about 6 daysHighs around 66 °F (19 °C), lows around 46 °F (8 °C), rain on about 6 days
Crowds and prices
- Crowds · United States overall
- Low
- Prices · United States overall
- Low
United States overall: Cold and snowy north and in the mountains; Florida, Hawaii and the desert Southwest are the picks.
Compare two months
Weather, crowds and prices for any two months in Diamond Bar, side by side.
Verdict
Jan: Avoid
Mar: Great (better)
Daytime high
Jan: 19 °C (66 °F)66 °F (19 °C)
Mar: 21 °C (70 °F)70 °F (21 °C)
Night low
Jan: 8 °C (46 °F)46 °F (8 °C)
Mar: 9 °C (48 °F)48 °F (9 °C)
Rain days
Jan: 6
Mar: 5 (better)
Crowds
Jan: Low
Mar: Medium
Prices
Jan: Low
Mar: Medium
Festivals listed
Jan: 0
Mar: 2
January: Listed as a month to avoid: Jul–Aug (hot), Dec–Feb (rainy).
March: Inside Diamond Bar's best window: Mar–May, Oct–Nov.
Diamond Bar: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings