Rancho Cucamonga, CA Hourly Weather Forecast
Next 48 Hours
Sat, Sep 19th 2026
Sunny skies in the morning, with Clear conditions expected by night. Warming trend from 65°F to 85°. Light winds from the WSW at 6.3 mph, with humidity ranging 22% to 62%, and an avg barometric pressure of 29.9 inHg.
| Sat, Sep 19th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
6 AM Clear UV: 0 |
66°F Feels 64°F |
62% | 3.1 WSW | 29.94 | 52.1°F | 4% |
7 AM Sunny UV: 0 |
65°F Feels 64°F |
62% | 3.1 WSW | 29.95 | 52.2°F | 4% |
8 AM SunnyUV: 0.5 |
67°F Feels 66°F |
59% | 3.1 WSW | 29.96 | 51.9°F | 3% |
9 AM SunnyUV: 1.9 |
69°F Feels 68°F |
52% | 3.4 WSW | 29.95 | 50.9°F | 2% |
10 AM SunnyUV: 3.9 |
72°F Feels 70°F |
45% | 3.6 WSW | 29.95 | 50°F | 1% |
11 AM SunnyUV: 6.2 |
76°F Feels 73°F |
39% | 3.6 WSW | 29.93 | 48.6°F | 1% |
12 PM SunnyUV: 8 |
79°F Feels 76°F |
33% | 4.3 WSW | 29.91 | 47.2°F | 1% |
1 PM SunnyUV: 8.5 |
82°F Feels 78°F |
28% | 5.4 W | 29.89 | 45.5°F | 0% |
2 PM SunnyUV: 7.6 |
84°F Feels 79°F |
24% | 6.7 W | 29.86 | 43.6°F | 0% |
3 PM SunnyUV: 5.6 |
85°F Feels 79°F |
22% | 8.5 W | 29.84 | 42.7°F | 0% |
4 PM SunnyUV: 3.2 |
85°F Feels 78°F |
23% | 9.6 W | 29.83 | 43.1°F | 0% |
5 PM SunnyUV: 1.3 |
84°F Feels 76°F |
26% | 11.2 W | 29.83 | 45.2°F | 0% |
6 PM SunnyUV: 0.3 |
81°F Feels 74°F |
32% | 11 WSW | 29.84 | 47.8°F | 1% |
7 PM ClearUV: 0 |
77°F Feels 72°F |
38% | 9.6 WSW | 29.86 | 49.4°F | 1% |
8 PM ClearUV: 0 |
75°F Feels 71°F |
42% | 8.3 W | 29.88 | 50.3°F | 1% |
9 PM ClearUV: 0 |
74°F Feels 70°F |
44% | 6.9 WSW | 29.9 | 50.8°F | 1% |
10 PM ClearUV: 0 |
73°F Feels 70°F |
47% | 5.8 WSW | 29.9 | 51.5°F | 2% |
11 PM ClearUV: 0 |
72°F Feels 69°F |
50% | 5.8 WSW | 29.9 | 52.3°F | 3% |
Sun, Sep 20th 2026
Overcast conditions giving way to Clear conditions by evening. Warming trend from 67°F to 82°. Light winds from the WSW at 6.3 mph, with humidity levels between 32% to 66%, and an avg barometric pressure of 29.89 inHg.
| Sun, Sep 20th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM Overcast UV: 0 |
71°F Feels 69°F |
53% | 5.1 W | 29.9 | 52.8°F | 12% |
1 AM ClearUV: 0 |
70°F Feels 68°F |
56% | 4.7 WSW | 29.9 | 53.4°F | 4% |
2 AM OvercastUV: 0 |
69°F Feels 68°F |
58% | 4.5 WSW | 29.9 | 54.1°F | 14% |
3 AM OvercastUV: 0 |
69°F Feels 68°F |
60% | 3.6 WSW | 29.89 | 54.4°F | 15% |
4 AM OvercastUV: 0 |
68°F Feels 68°F |
62% | 3.8 WSW | 29.89 | 54.9°F | 15% |
5 AM OvercastUV: 0 |
68°F Feels 67°F |
64% | 3.8 WSW | 29.89 | 55°F | 16% |
6 AM Smoky Haze UV: 0 |
67°F Feels 67°F |
66% | 3.4 WSW | 29.9 | 55.3°F | 16% |
7 AM Smoky Haze UV: 0 |
67°F Feels 67°F |
66% | 3.6 WSW | 29.91 | 55.5°F | 17% |
8 AM Smoky HazeUV: 0.5 |
68°F Feels 68°F |
64% | 3.1 WSW | 29.92 | 55.2°F | 15% |
9 AM Overcast UV: 1.7 |
70°F Feels 69°F |
59% | 3.8 WSW | 29.92 | 54.8°F | 14% |
10 AM OvercastUV: 3.9 |
72°F Feels 71°F |
53% | 4 WSW | 29.92 | 54.1°F | 12% |
11 AM OvercastUV: 6.2 |
75°F Feels 74°F |
46% | 4.5 WSW | 29.91 | 52.9°F | 11% |
12 PM OvercastUV: 7.9 |
78°F Feels 76°F |
40% | 5.1 WSW | 29.9 | 51.7°F | 10% |
1 PM OvercastUV: 8.6 |
80°F Feels 76°F |
36% | 7.4 W | 29.88 | 50.8°F | 10% |
2 PM OvercastUV: 7.6 |
82°F Feels 77°F |
33% | 7.8 W | 29.86 | 50°F | 9% |
3 PM OvercastUV: 5.6 |
82°F Feels 77°F |
32% | 9.2 W | 29.84 | 49.8°F | 8% |
4 PM OvercastUV: 3.2 |
82°F Feels 76°F |
33% | 11.6 W | 29.84 | 50.3°F | 9% |
5 PM Cloudy UV: 1.2 |
81°F Feels 76°F |
35% | 9.2 W | 29.84 | 50.8°F | 7% |
6 PM Partly Cloudy UV: 0.3 |
79°F Feels 74°F |
38% | 9.4 WSW | 29.85 | 51.2°F | 5% |
7 PM ClearUV: 0 |
75°F Feels 70°F |
43% | 11.2 W | 29.87 | 51.6°F | 1% |
8 PM ClearUV: 0 |
72°F Feels 67°F |
49% | 10.3 W | 29.89 | 52.1°F | 2% |
9 PM ClearUV: 0 |
71°F Feels 67°F |
53% | 8.1 W | 29.91 | 52.8°F | 3% |
10 PM ClearUV: 0 |
69°F Feels 66°F |
57% | 7.6 W | 29.91 | 53.1°F | 3% |
11 PM ClearUV: 0 |
68°F Feels 66°F |
59% | 6.5 WSW | 29.91 | 53.3°F | 3% |
Mon, Sep 21st 2026
Clear conditions expected later. Temps range from 64° to 67°. Light winds from the WSW at 4.7 mph, with humidity levels between 60% to 70%, and an avg barometric pressure of 29.89 inHg.
| Mon, Sep 21st | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM ClearUV: 0 |
67°F Feels 66°F |
60% | 5.1 WSW | 29.9 | 53.2°F | 4% |
1 AM ClearUV: 0 |
67°F Feels 66°F |
61% | 4.3 WSW | 29.9 | 53.3°F | 4% |
2 AM ClearUV: 0 |
67°F Feels 65°F |
63% | 4.9 WSW | 29.89 | 53.4°F | 4% |
3 AM ClearUV: 0 |
66°F Feels 64°F |
66% | 5.6 W | 29.88 | 53.9°F | 5% |
4 AM ClearUV: 0 |
65°F Feels 64°F |
69% | 4.9 WSW | 29.88 | 54.3°F | 7% |
5 AM Partly Cloudy UV: 0 |
64°F Feels 64°F |
70% | 3.6 WSW | 29.89 | 54.6°F | 10% |
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