Extended 10-day forecasts, Diamond Bar (CA)
Hourly detail for the next 48 hours, six-hourly segments for the rest of the week.
This is the 10-day extended forecast for Diamond Bar, the United States of America. The forecast is updated every three hours and displays the temperature, weather conditions, wind direction and speed, as well as the chance of precipitation.
Check out our September climate page to see if the current temperatures in Diamond Bar is typical for this time of year.
Today · Sunday 6 Sep
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 17:00 |
Rain
|
24°C (75°F) | 0.8 mm (0.03 in) | 86% | E 3 m/s (6 knots) |
| 18:00 |
Heavy rain
|
23°C (73°F) | 1.1 mm (0.04 in) | 91% | E 2 m/s (4 knots) |
| 19:00 |
Rain
|
23°C (73°F) | 0.8 mm (0.03 in) | 94% | NE 2 m/s (4 knots) |
| 20:00 |
Cloudy
|
23°C (73°F) | 0 mm (0 in) | 95% | NE 2 m/s (4 knots) |
| 21:00 |
Partly cloudy
|
22°C (72°F) | 0 mm (0 in) | 95% | E 2 m/s (4 knots) |
| 22:00 |
Cloudy
|
22°C (72°F) | 0 mm (0 in) | 94% | NE 2 m/s (4 knots) |
| 23:00 |
Cloudy
|
22°C (72°F) | 0 mm (0 in) | 95% | NE 2 m/s (4 knots) |
17:00
Rain
86% · E 3 m/s (6 knots)
24°C (75°F)
0.8 mm (0.03 in)
18:00
Heavy rain
91% · E 2 m/s (4 knots)
23°C (73°F)
1.1 mm (0.04 in)
19:00
Rain
94% · NE 2 m/s (4 knots)
23°C (73°F)
0.8 mm (0.03 in)
20:00
Cloudy
95% · NE 2 m/s (4 knots)
23°C (73°F)
0 mm (0 in)
21:00
Partly cloudy
95% · E 2 m/s (4 knots)
22°C (72°F)
0 mm (0 in)
22:00
Cloudy
94% · NE 2 m/s (4 knots)
22°C (72°F)
0 mm (0 in)
23:00
Cloudy
95% · NE 2 m/s (4 knots)
22°C (72°F)
0 mm (0 in)
Tomorrow · Monday 7 Sep
Hour by hour
| Time | Weather | Temp | Precip | Humidity | Wind |
|---|---|---|---|---|---|
| 00:00 |
Cloudy
|
22°C (72°F) | 0 mm (0 in) | 94% | N 2 m/s (4 knots) |
| 01:00 |
Partly cloudy
|
22°C (72°F) | 0 mm (0 in) | 95% | NW 2 m/s (4 knots) |
| 02:00 |
Cloudy
|
21°C (70°F) | 0 mm (0 in) | 96% | NW 1 m/s (2 knots) |
| 03:00 |
Partly cloudy
|
21°C (70°F) | 0 mm (0 in) | 97% | SE 1 m/s (2 knots) |
| 04:00 |
Partly cloudy
|
21°C (70°F) | 0 mm (0 in) | 99% | SE 1 m/s (2 knots) |
| 05:00 |
Fog
|
21°C (70°F) | 0 mm (0 in) | 98% | E 1 m/s (2 knots) |
| 06:00 |
Cloudy
|
21°C (70°F) | 0 mm (0 in) | 97% | E 2 m/s (4 knots) |
| 07:00 |
Partly cloudy
|
21°C (70°F) | 0 mm (0 in) | 94% | E 2 m/s (4 knots) |
| 08:00 |
Partly cloudy
|
23°C (73°F) | 0 mm (0 in) | 88% | SE 2 m/s (4 knots) |
| 09:00 |
Partly cloudy
|
25°C (77°F) | 0 mm (0 in) | 76% | E 2 m/s (4 knots) |
| 10:00 |
Partly cloudy
|
27°C (81°F) | 0 mm (0 in) | 65% | E 2 m/s (4 knots) |
| 11:00 |
Cloudy
|
27°C (81°F) | 0 mm (0 in) | 63% | SE 2 m/s (4 knots) |
| 12:00 |
Cloudy
|
28°C (82°F) | 0 mm (0 in) | 62% | E 2 m/s (4 knots) |
| 13:00 |
Light rain showers
|
29°C (84°F) | 0.2 mm (0.01 in) | 62% | E 2 m/s (4 knots) |
| 14:00 |
Mostly sunny
|
28°C (82°F) | 0 mm (0 in) | 67% | E 2 m/s (4 knots) |
| 15:00 |
Partly cloudy
|
29°C (84°F) | 0 mm (0 in) | 64% | E 2 m/s (4 knots) |
| 16:00 |
Partly cloudy
|
29°C (84°F) | 0 mm (0 in) | 62% | NE 1 m/s (2 knots) |
| 17:00 |
Partly cloudy
|
29°C (84°F) | 0 mm (0 in) | 62% | SW 2 m/s (4 knots) |
| 18:00 |
Clear skies
|
29°C (84°F) | 0 mm (0 in) | 64% | W 1 m/s (2 knots) |
| 19:00 |
Clear skies
|
27°C (81°F) | 0 mm (0 in) | 76% | W 1 m/s (2 knots) |
| 20:00 |
Clear skies
|
25°C (77°F) | 0 mm (0 in) | 84% | W 1 m/s (2 knots) |
| 21:00 |
Clear skies
|
24°C (75°F) | 0 mm (0 in) | 87% | SW 1 m/s (2 knots) |
| 22:00 |
Clear skies
|
23°C (73°F) | 0 mm (0 in) | 88% | SW 1 m/s (2 knots) |
| 23:00 |
Mostly clear
|
22°C (72°F) | 0 mm (0 in) | 92% | SW 1 m/s (2 knots) |
00:00
Cloudy
94% · N 2 m/s (4 knots)
22°C (72°F)
0 mm (0 in)
01:00
Partly cloudy
95% · NW 2 m/s (4 knots)
22°C (72°F)
0 mm (0 in)
02:00
Cloudy
96% · NW 1 m/s (2 knots)
21°C (70°F)
0 mm (0 in)
03:00
Partly cloudy
97% · SE 1 m/s (2 knots)
21°C (70°F)
0 mm (0 in)
04:00
Partly cloudy
99% · SE 1 m/s (2 knots)
21°C (70°F)
0 mm (0 in)
05:00
Fog
98% · E 1 m/s (2 knots)
21°C (70°F)
0 mm (0 in)
06:00
Cloudy
97% · E 2 m/s (4 knots)
21°C (70°F)
0 mm (0 in)
07:00
Partly cloudy
94% · E 2 m/s (4 knots)
21°C (70°F)
0 mm (0 in)
08:00
Partly cloudy
88% · SE 2 m/s (4 knots)
23°C (73°F)
0 mm (0 in)
09:00
Partly cloudy
76% · E 2 m/s (4 knots)
25°C (77°F)
0 mm (0 in)
10:00
Partly cloudy
65% · E 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
11:00
Cloudy
63% · SE 2 m/s (4 knots)
27°C (81°F)
0 mm (0 in)
12:00
Cloudy
62% · E 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
13:00
Light rain showers
62% · E 2 m/s (4 knots)
29°C (84°F)
0.2 mm (0.01 in)
14:00
Mostly sunny
67% · E 2 m/s (4 knots)
28°C (82°F)
0 mm (0 in)
15:00
Partly cloudy
64% · E 2 m/s (4 knots)
29°C (84°F)
0 mm (0 in)
16:00
Partly cloudy
62% · NE 1 m/s (2 knots)
29°C (84°F)
0 mm (0 in)
17:00
Partly cloudy
62% · SW 2 m/s (4 knots)
29°C (84°F)
0 mm (0 in)
18:00
Clear skies
64% · W 1 m/s (2 knots)
29°C (84°F)
0 mm (0 in)
19:00
Clear skies
76% · W 1 m/s (2 knots)
27°C (81°F)
0 mm (0 in)
20:00
Clear skies
84% · W 1 m/s (2 knots)
25°C (77°F)
0 mm (0 in)
21:00
Clear skies
87% · SW 1 m/s (2 knots)
24°C (75°F)
0 mm (0 in)
22:00
Clear skies
88% · SW 1 m/s (2 knots)
23°C (73°F)
0 mm (0 in)
23:00
Mostly clear
92% · SW 1 m/s (2 knots)
22°C (72°F)
0 mm (0 in)
Next 7 days
Six-hour segments
Day
Night
23:00
Morning
05:00
Afternoon
11:00
Evening
17:00
Tuesday
8 Sep
22°C (72°F)
0 mm (0 in)
Partly cloudy
92% · SW 1 m/s (2 knots)
22°C (72°F)
0 mm (0 in)
Partly cloudy
95% · E 2 m/s (4 knots)
30°C (86°F)
0 mm (0 in)
Partly cloudy
60% · N 1 m/s (2 knots)
31°C (88°F)
0 mm (0 in)
Mostly clear
53% · W 3 m/s (6 knots)
Tue
8 Sep
night
22°C (72°F)
0 mm (0 in)
Partly cloudy
92%
1 m/s (2 knots)
morning
22°C (72°F)
0 mm (0 in)
Partly cloudy
95%
2 m/s (4 knots)
afternoon
30°C (86°F)
0 mm (0 in)
Partly cloudy
60%
1 m/s (2 knots)
evening
31°C (88°F)
0 mm (0 in)
Mostly clear
53%
3 m/s (6 knots)
Wednesday
9 Sep
24°C (75°F)
0 mm (0 in)
Clear skies
84% · SE 1 m/s (2 knots)
23°C (73°F)
0 mm (0 in)
Clear skies
93% · E 2 m/s (4 knots)
33°C (91°F)
0 mm (0 in)
Clear skies
53% · W ()
34°C (93°F)
0 mm (0 in)
Clear skies
52% · W 3 m/s (6 knots)
Wed
9 Sep
night
24°C (75°F)
0 mm (0 in)
Clear skies
84%
1 m/s (2 knots)
morning
23°C (73°F)
0 mm (0 in)
Clear skies
93%
2 m/s (4 knots)
afternoon
33°C (91°F)
0 mm (0 in)
Clear skies
53%
()
evening
34°C (93°F)
0 mm (0 in)
Clear skies
52%
3 m/s (6 knots)
Thursday
10 Sep
25°C (77°F)
0 mm (0 in)
Clear skies
87% · SW 1 m/s (2 knots)
22°C (72°F)
0 mm (0 in)
Clear skies
97% · SE 1 m/s (2 knots)
32°C (90°F)
0 mm (0 in)
Clear skies
57% · SW 1 m/s (2 knots)
33°C (91°F)
0 mm (0 in)
Clear skies
43% · SW 3 m/s (6 knots)
Thu
10 Sep
night
25°C (77°F)
0 mm (0 in)
Clear skies
87%
1 m/s (2 knots)
morning
22°C (72°F)
0 mm (0 in)
Clear skies
97%
1 m/s (2 knots)
afternoon
32°C (90°F)
0 mm (0 in)
Clear skies
57%
1 m/s (2 knots)
evening
33°C (91°F)
0 mm (0 in)
Clear skies
43%
3 m/s (6 knots)
Friday
11 Sep
23°C (73°F)
0 mm (0 in)
Clear skies
76% · SW 1 m/s (2 knots)
20°C (68°F)
0 mm (0 in)
Partly cloudy
96% · W 1 m/s (2 knots)
30°C (86°F)
0 mm (0 in)
Partly cloudy
54% · W 2 m/s (4 knots)
31°C (88°F)
0 mm (0 in)
Partly cloudy
39% · SW 3 m/s (6 knots)
Fri
11 Sep
night
23°C (73°F)
0 mm (0 in)
Clear skies
76%
1 m/s (2 knots)
morning
20°C (68°F)
0 mm (0 in)
Partly cloudy
96%
1 m/s (2 knots)
afternoon
30°C (86°F)
0 mm (0 in)
Partly cloudy
54%
2 m/s (4 knots)
evening
31°C (88°F)
0 mm (0 in)
Partly cloudy
39%
3 m/s (6 knots)
Saturday
12 Sep
22°C (72°F)
0 mm (0 in)
Clear skies
73% · SW 1 m/s (2 knots)
19°C (66°F)
0 mm (0 in)
Partly cloudy
99% · W 1 m/s (2 knots)
28°C (82°F)
0 mm (0 in)
Clear skies
52% · SW 1 m/s (2 knots)
29°C (84°F)
0 mm (0 in)
Clear skies
48% · SW 3 m/s (6 knots)
Sat
12 Sep
night
22°C (72°F)
0 mm (0 in)
Clear skies
73%
1 m/s (2 knots)
morning
19°C (66°F)
0 mm (0 in)
Partly cloudy
99%
1 m/s (2 knots)
afternoon
28°C (82°F)
0 mm (0 in)
Clear skies
52%
1 m/s (2 knots)
evening
29°C (84°F)
0 mm (0 in)
Clear skies
48%
3 m/s (6 knots)
Sunday
13 Sep
20°C (68°F)
0 mm (0 in)
Mostly clear
91% · SW 1 m/s (2 knots)
19°C (66°F)
0 mm (0 in)
Cloudy
96% · SW 1 m/s (2 knots)
25°C (77°F)
0 mm (0 in)
Mostly sunny
58% · W 1 m/s (2 knots)
29°C (84°F)
0 mm (0 in)
Clear skies
43% · SW 3 m/s (6 knots)
Sun
13 Sep
night
20°C (68°F)
0 mm (0 in)
Mostly clear
91%
1 m/s (2 knots)
morning
19°C (66°F)
0 mm (0 in)
Cloudy
96%
1 m/s (2 knots)
afternoon
25°C (77°F)
0 mm (0 in)
Mostly sunny
58%
1 m/s (2 knots)
evening
29°C (84°F)
0 mm (0 in)
Clear skies
43%
3 m/s (6 knots)
Monday
14 Sep
22°C (72°F)
0 mm (0 in)
Partly cloudy
77% · SW 1 m/s (2 knots)
18°C (64°F)
0 mm (0 in)
Clear skies
98% · W 1 m/s (2 knots)
27°C (81°F)
0 mm (0 in)
Clear skies
54% · W 2 m/s (4 knots)
29°C (84°F)
0 mm (0 in)
Clear skies
41% · SW 4 m/s (8 knots)
Mon
14 Sep
night
22°C (72°F)
0 mm (0 in)
Partly cloudy
77%
1 m/s (2 knots)
morning
18°C (64°F)
0 mm (0 in)
Clear skies
98%
1 m/s (2 knots)
afternoon
27°C (81°F)
0 mm (0 in)
Clear skies
54%
2 m/s (4 knots)
evening
29°C (84°F)
0 mm (0 in)
Clear skies
41%
4 m/s (8 knots)
Data from MET Norway.
Prefer the quick-glance version? See the 10-day summary.
Diamond Bar weather by month
Browse monthly averages for Diamond Bar: climate by month with temperature, rainfall and sunshine.
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