Weather forecast for tomorrowHercules, CA

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 66°F
  • 52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 14mphWSW 251°
  • Humidity: 62%
  • UV index: 5
  • Sunrise: 7:21 am PDT
  • Sunset: 6:26 pm PDT
  • ▼
On Monday, October 19, a thick layer of clouds will dominate the sky.
The temperature is forecasted to oscillate between a maximum of a comfortable 66.2°F and a minimum of a cool 51.8°F.
The expected maximum temperature will be relatively lower than October's typical high of 71.4°F.
Sunrise will be at 7:21 am and sunset at 6:26 pm; tomorrow's daylight will last for 11h and 4min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 66°C.
Coldest period: 3 am - 6 am 54°C.

Chance of precipitation

Highest chance: 9 pm 8%.

Hourly weather forecast

  • 12 am
  • 55°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphSW 236°
  • Humidity: 85%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 55°F
  • Feels like:
    52°F
Mostly Clear
Mostly Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphWSW 243°
  • Humidity: 85%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 54°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphWSW 251°
  • Humidity: 86%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 54°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphWSW 250°
  • Humidity: 84%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:21 am
  • 8 am
  • 54°F
  • Feels like:
    52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphWSW 251°
  • Humidity: 83%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 57°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 9mphWSW 249°
  • Humidity: 72%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphWSW 247°
  • Humidity: 55%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphWSW 245°
  • Humidity: 49%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Cloudy
Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 13mphWSW 251°
  • Humidity: 49%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    61°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 12mphW 261°
  • Humidity: 57%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:26 pm
  • 8 pm
  • 57°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 9mphW 261°
  • Humidity: 68%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 57°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphWSW 254°
  • Humidity: 75%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of cloudy and bright weather is expected.
The temperature will be between the lowest temperature of 53.6°F and the highest temperature of 66.2°F. The warmest part of the day is expected around 3 pm.
The high will be moderately lower than the normal maximum of 71.4°F for October. The night temperature will be also consistent with the standard October low of 54.7°F.
Updated: Oct 18, 2026 @ 07:32:18 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, a mainly cloudy pattern is expected.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 51.8°F.
The maximum temperature will be a few degrees lower than the average highest temperature of 71.4°F in October. The lowest temperature will be in line with the average low of 54.7°F.

On Monday, in Hercules, sunrise will be at 7:21 am and sunset at 6:26 pm (PDT).

Tomorrow, the daylight will last for 11h and 4min.