Weather forecast for tomorrowPittsburg, CA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 82°F
  • 54°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 14mphWSW 255°
  • Humidity: 47%
  • UV index: 5
  • Sunrise: 7:19 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
Tomorrow, in Pittsburg, conditions remain stable and sunny, with little cloud presence.
The temperature will peak at a moderately hot 82.4°F during the day, dropping to a low of a cool 53.6°F at night.
The maximum heat index, which factors the actual air temperature with the relative humidity, is computed to be 82.4°F.
The expected high of 82.4°F appears seasonally off, better matching September's typical values.
Sunrise will be at 7:19 am and sunset at 6:25 pm; tomorrow's daylight will last for 11h and 7min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 81°C.
Coldest hour: 6 am 57°C.

Chance of precipitation

Highest chance: 9 pm 3%.

Hourly weather forecast

  • 12 am
  • 68°F
  • Feels like:
    68°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 230°
  • Humidity: 39%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 63°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphSW 232°
  • Humidity: 53%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 61°F
  • Feels like:
    61°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphSW 235°
  • Humidity: 59%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 57°F
  • Feels like:
    55°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphWSW 236°
  • Humidity: 70%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:19 am
  • 8 am
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphSW 234°
  • Humidity: 75%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphWSW 246°
  • Humidity: 55%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 75°F
  • Feels like:
    75°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphW 272°
  • Humidity: 42%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 81°F
  • Feels like:
    81°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphW 267°
  • Humidity: 33%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphW 259°
  • Humidity: 33%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphWSW 252°
  • Humidity: 41%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:25 pm
  • 8 pm
  • 64°F
  • Feels like:
    63°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 15mphWSW 242°
  • Humidity: 57%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 61°F
  • Feels like:
    57°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 16mphWSW 237°
  • Humidity: 67%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, sunny conditions are likely to prevail.
The temperature will vary between the lowest temperature of 57.2°F and the highest temperature of 80.6°F. The warmest part of the day will be at 2 pm and 3 pm.
The maximum temperature tomorrow will be more alike with September's average high of 84.7°F than October's typical of 75.9°F. The temperature low is forecasted to be consistent with the usual October value of 54.3°F.
Updated: Oct 18, 2026 @ 05:44:02 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, conditions remain stable and sunny, with little cloud presence.

Tomorrow, the highest temperature will be 82.4°F, while the lowest temperature will be 53.6°F. The maximum heat index, which modifies the air temperature to account for humidity, is calculated to be 82.4°F.
The highest temperature will be relatively higher than the average maximum of 75.9°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Pittsburg, sunrise will be at 7:19 am and sunset at 6:25 pm (PDT).

In Pittsburg, tomorrow, there will be 11h and 7min of daylight.