Weather forecast for tomorrowPlacentia, CA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 90°F
  • 63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSSE 154°
  • Humidity: 28%
  • UV index: 6
  • Sunrise: 6:59 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
Tomorrow, on Sunday, clear skies and sunshine are also anticipated.
Temperatures are set to span a considerable range, with a high of a blazing 89.6°F and a low of an enjoyable 62.6°F.
The expected high of 89.6°F appears seasonally off, better matching September's typical values.
Sunrise will be at 6:59 am and sunset at 6:14 pm; tomorrow's daylight will last for 11h and 15min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 88°C.
Coldest hour: 6 am 66°C.

Chance of precipitation

Highest chance: 9 pm 1%.

Hourly weather forecast

  • 12 am
  • 73°F
  • Feels like:
    73°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphE 90°
  • Humidity: 38%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 70°F
  • Feels like:
    70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphENE 76°
  • Humidity: 41%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 68°F
  • Feels like:
    68°F
Mostly Clear
Mostly Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphENE 68°
  • Humidity: 42%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 66°F
  • Feels like:
    66°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphENE 68°
  • Humidity: 44%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 6:59 am
  • 8 am
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphENE 66°
  • Humidity: 41%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphENE 77°
  • Humidity: 26%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 12 pm
  • 86°F
  • Feels like:
    86°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphESE 108°
  • Humidity: 20%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 88°F
  • Feels like:
    88°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 232°
  • Humidity: 20%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 4 pm
  • 86°F
  • Feels like:
    86°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphSW 230°
  • Humidity: 25%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 82°F
  • Feels like:
    82°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphWSW 251°
  • Humidity: 30%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:14 pm
  • 8 pm
  • 77°F
  • Feels like:
    77°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSW 232°
  • Humidity: 41%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 73°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSSE 161°
  • Humidity: 49%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of clear and cloud-filled weather is expected.
The temperature will vary between a minimum of 66.2°F and a maximum of 87.8°F. The hottest part of the day will be from 1 pm to 3 pm.
Tomorrow, the expected high matches September's average of 84°F more than October's. The night temperature will be consistent with the standard October low of 61°F.
Updated: Oct 18, 2026 @ 03:33:19 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, conditions remain stable and sunny, with little cloud presence.

Tomorrow, the highest temperature in Placentia will be 89.6°F, while the lowest temperature will be 62.6°F.
The maximum temperature tomorrow will be notably higher than the average highest temperature of 77.9°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Placentia, sunrise will be at 6:59 am and sunset at 6:14 pm (PDT).

In Placentia, the length of the day tomorrow will be 11h and 15min.