Diamond Bar
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Current – 10-day forecastForecast

Diamond Bar Weather in October

October in Diamond Bar typically sees daytime highs of 28°C (82°F) and nighttime lows of 13°C (55°F). Minimal rainfall is typical for this month.

Rainfall in Diamond Bar in October

Historically, approximately 4 days this month are expected to have rain, averaging 15 mm (0.6 in). The occasional light shower is possible, but rain is rarely an issue this month.

Temperature in Diamond Bar in October

If you're visiting Diamond Bar in October, expect excellent temperatures with highs of 28°C (82°F) and overnight lows of 13°C (55°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Diamond Bar in October

There are approximately 252 hours of sunshine this month, resulting in mostly clear days.

If you favor pleasant temperatures and minimal rainfall, October is one of the best months to visit Diamond Bar.

Diamond Bar Temperature in October

Min Temperature
13°C (55°F)
Max Temperature
28°C (82°F)
Chance of Rain
13%
Precipitation
15 mm (0.6 in)
Rainy days
4 days
Sunshine
252 hours *
Percentage Sunshine
*
* Data from: Corona, the United States of America (28 KM, 17 Miles).

Diamond Bar Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Diamond Bar - and find the best time to visit.

Best Places in the United States of America in October

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Diamond Bar in October

Warm weather calls for comfortable, breathable clothing in October. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Diamond Bar in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    8/10
  • Walking
    8/10
  • Barbeque
    10/10
  • Camping
    10/10
  • Outdoor sports
    8/10

Diamond Bar 3-Day Forecast

More climate data for Diamond Bar

Popular in October

Where to go in October - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.