Weather forecast for tomorrowUnion City, CA

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 64°F
  • 52°F
Cloudy
Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 13mphW 276°
  • Humidity: 63%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
On Monday, in Union City, expect persistent cloudiness.
Temperatures will oscillate between a comfortable 64.4°F at their highest and a crisp 51.8°F at their lowest.
The temperature will be lower and more consistent with November's average high of 63.5°F than with October's usual.
Sunrise will be at 7:20 am and sunset at 6:25 pm; tomorrow's daylight will last for 11h and 5min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 55°C.

Chance of precipitation

Highest chance: 12 am 21%.

Hourly weather forecast

  • 12 am
  • 57°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 7mphW 273°
  • Humidity: 81%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 57°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphW 267°
  • Humidity: 79%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 55°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 7mphWSW 256°
  • Humidity: 79%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 55°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 6mphW 269°
  • Humidity: 77%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:20 am
  • 8 am
  • 57°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 6mphW 262°
  • Humidity: 74%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 59°F
  • Feels like:
    57°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphW 265°
  • Humidity: 68%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 61°F
  • Feels like:
    61°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 9mphW 269°
  • Humidity: 59%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    63°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 11mphWNW 286°
  • Humidity: 52%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    61°F
Cloudy
Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 13mphWNW 290°
  • Humidity: 56%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    59°F
Cloudy
Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 12mphWNW 289°
  • Humidity: 62%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:25 pm
  • 8 pm
  • 57°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 7mphWNW 298°
  • Humidity: 71%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 57°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 4mphWNW 295°
  • Humidity: 74%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of gloomy and bright weather is predicted.
The temperature will vary between a minimum of 55.4°F and a maximum of 64.4°F. The warmest part of the day will be at 2 pm and 3 pm.
The expected temperature aligns more with November's average high than with October's 72.1°F. The night temperature will be consistent with the standard October low of 53.8°F.
Updated: Oct 18, 2026 @ 12:57:28 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, gray and overcast skies will be present.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 51.8°F.
The highest temperature will be a couple of degrees lower than the average maximum of 72.1°F in October. The lowest temperature will be in line with the average low of 53.8°F.

On Monday, in Union City, sunrise will be at 7:20 am and sunset at 6:25 pm (PDT).

In Union City, tomorrow, there will be 11h and 5min of daylight.