10-Day Weather Forecast for Diamond Bar (CA)

Six-hourly outlook through Tuesday 28 July. Updated every three hours via MET Norway.

Day
Night
23:00
Morning
05:00
Afternoon
11:00
Evening
17:00
Saturday
18 Jul
Clear skies
25°C (77°F)
0 mm (0 in)
Hourly ›
Sunday
19 Jul
Clear skies
22°C (72°F)
0 mm (0 in)
Clear skies
19°C (66°F)
0 mm (0 in)
Clear skies
30°C (86°F)
0 mm (0 in)
Mostly clear
32°C (90°F)
0 mm (0 in)
Hourly ›
Monday
20 Jul
Partly cloudy
22°C (72°F)
0 mm (0 in)
Mostly sunny
20°C (68°F)
0 mm (0 in)
Partly cloudy
31°C (88°F)
0 mm (0 in)
Clear skies
34°C (93°F)
0 mm (0 in)
Hourly ›
Tuesday
21 Jul
Mostly clear
24°C (75°F)
0 mm (0 in)
Partly cloudy
20°C (68°F)
0.1 mm (0 in)
Clear skies
30°C (86°F)
0 mm (0 in)
Clear skies
32°C (90°F)
0 mm (0 in)
Hourly ›
Wednesday
22 Jul
Clear skies
24°C (75°F)
0 mm (0 in)
Clear skies
20°C (68°F)
0 mm (0 in)
Clear skies
28°C (82°F)
0 mm (0 in)
Clear skies
31°C (88°F)
0 mm (0 in)
Hourly ›
Thursday
23 Jul
Clear skies
22°C (72°F)
0 mm (0 in)
Partly cloudy
19°C (66°F)
0 mm (0 in)
Mostly sunny
28°C (82°F)
0 mm (0 in)
Clear skies
32°C (90°F)
0 mm (0 in)
Hourly ›
Friday
24 Jul
Mostly clear
22°C (72°F)
0 mm (0 in)
Clear skies
19°C (66°F)
0 mm (0 in)
Mostly sunny
29°C (84°F)
0 mm (0 in)
Partly cloudy
31°C (88°F)
0 mm (0 in)
Hourly ›
Saturday
25 Jul
Mostly clear
21°C (70°F)
0 mm (0 in)
Mostly sunny
18°C (64°F)
0 mm (0 in)
Clear skies
32°C (90°F)
0 mm (0 in)
Clear skies
34°C (93°F)
0 mm (0 in)
Hourly ›
Sunday
26 Jul
Clear skies
25°C (77°F)
0 mm (0 in)
Clear skies
21°C (70°F)
0 mm (0 in)
Clear skies
35°C (95°F)
0 mm (0 in)
Clear skies
39°C (102°F)
0 mm (0 in)
Hourly ›
Monday
27 Jul
Clear skies
28°C (82°F)
0 mm (0 in)
Clear skies
23°C (73°F)
0 mm (0 in)
Clear skies
38°C (100°F)
0 mm (0 in)
Clear skies
40°C (104°F)
0 mm (0 in)
Hourly ›
Data from MET Norway · Updated every three hours.

What's the weather in Diamond Bar this week?

Today's weather - Saturday 18 Jul

This evening, the weather in Diamond Bar will be clear skies, with temperatures around 25°C (77°F), dropping to 22°C (72°F) overnight.

Tomorrow's weather - Sunday 19 Jul

Tomorrow's weather in Diamond Bar will be clear skies. High temperatures will reach a very warm 32°C (90°F), with lows dropping to around 19°C (66°F).

10-Day Weather Forecast

The 10-day forecast shows that temperatures will get warmer, maximum temperatures reach 34°C (93°F) on Saturday. During this period, expect daytime highs around 31°C (88°F) and nighttime lows around 20°C (68°F). Compared to July norms, this represents typical weather. The next 10 days will feature plenty of sunshine. Rain amounts are forecast to be much less than usual (relative to standard July patterns), with mostly dry conditions. The wind will be generally calm during this period.

Weather Forecast FAQ for Diamond Bar

When will be the warmest day next week?

The warmest day is expected to be Saturday with a high of 34°C (93°F).

When will be the coldest day?

The coldest day is forecasted for Saturday with a low of 18°C (64°F).

Will it rain next week in Diamond Bar?

No significant rainfall is currently expected during the next 10 days.

How much rainfall is expected next week?

A total of 0 mm (0 in) of rain is forecasted for the 10-day period.

What will be the temperature range next week?

Temperatures will range from 18°C (64°F) to 34°C (93°F).

More about Diamond Bar

Explore the full Diamond Bar climate overview with monthly averages, or check rainfall data and temperature by month.

Diamond Bar weather by month

Browse monthly averages for Diamond Bar: climate by month with temperature, rainfall and sunshine.

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