Weather forecast for tomorrowRancho Cucamonga, CA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 86°F
- 63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphSW 216°
- Humidity: 31%
- UV index: 6
- Sunrise: 6:59 am PDT
- Sunset: 6:11 pm PDT
- details ▼
Tomorrow, on Monday, October 19, sun-filled conditions are also expected to persist.
The maximum temperature will be a humid 86°F, while the minimum temperature will be a breezy 62.6°F.
It will feel hotter than usual, as the temperature reflects September's normal high of 88.3°F, not October's.
Sunrise will be at 6:59 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 13min.
The maximum temperature will be a humid 86°F, while the minimum temperature will be a breezy 62.6°F.
It will feel hotter than usual, as the temperature reflects September's normal high of 88.3°F, not October's.
Sunrise will be at 6:59 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 13min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 84°C.
Coldest hour: 6 am 64°C.
Coldest hour: 6 am 64°C.
Chance of precipitation
Highest chance: 12 am - 9 pm 0%.
Hourly weather forecast
- 12 am
- 70°F
- Feels like:70°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphNE 56°
- Humidity: 43%
- Pressure: 29.94"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 2 am
- 66°F
- Feels like:66°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphNE 36°
- Humidity: 45%
- Pressure: 29.91"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 4 am
- 66°F
- Feels like:66°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphNNE 12°
- Humidity: 45%
- Pressure: 29.91"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 6 am
- 64°F
- Feels like:64°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphNNE 30°
- Humidity: 47%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 6:59 am
- 8 am
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphNE 40°
- Humidity: 43%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 75°F
- Feels like:75°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSE 129°
- Humidity: 32%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 12 pm
- 81°F
- Feels like:81°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSW 208°
- Humidity: 25%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 6
- details ▼
- 2 pm
- 84°F
- Feels like:84°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSW 231°
- Humidity: 23%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 4 pm
- 82°F
- Feels like:82°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphWSW 245°
- Humidity: 26%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 6 pm
- 79°F
- Feels like:79°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphWSW 252°
- Humidity: 34%
- Pressure: 29.8"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:11 pm
- 8 pm
- 73°F
- Feels like:73°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphWSW 253°
- Humidity: 47%
- Pressure: 29.83"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 10 pm
- 70°F
- Feels like:70°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphW 275°
- Humidity: 55%
- Pressure: 29.85"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Tomorrow, primarily bright and sunny weather is anticipated.
The temperature will vary between the lowest temperature of 64.4°F and the highest temperature of 84.2°F. The hottest part of the day will be at 2 pm and 3 pm.
The day’s peak temperature will reflect September's norm of 88.3°F more than October's 79.2°F. The minimum temperature will be a few degrees higher than October's average low of 57.6°F.
The temperature will vary between the lowest temperature of 64.4°F and the highest temperature of 84.2°F. The hottest part of the day will be at 2 pm and 3 pm.
The day’s peak temperature will reflect September's norm of 88.3°F more than October's 79.2°F. The minimum temperature will be a few degrees higher than October's average low of 57.6°F.
Updated: Oct 18, 2026 @ 11:02:55 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Monday, in Rancho Cucamonga, clear and sunny conditions are expected.
Tomorrow, the maximum temperature will be 86°F, while the minimum temperature will be 62.6°F.
The highest temperature will be relatively higher than the average maximum of 79.2°F in October. The lowest temperature will be also a couple of degrees higher than the average low of 57.6°F.
The highest temperature will be relatively higher than the average maximum of 79.2°F in October. The lowest temperature will be also a couple of degrees higher than the average low of 57.6°F.
On Monday, in Rancho Cucamonga, sunrise will be at 6:59 am and sunset at 6:11 pm (PDT).
In Rancho Cucamonga, the length of the day tomorrow will be 11h and 13min.
