Weather forecast for todayFullerton, CA

Weather forecast for today

Current condition 7:35 am PDT

  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 1mphW 260°
  • Humidity: 65%
  • Dewpoint: 50°F
  • Pressure: 29.93"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Fullerton, currently, a bright and warm day is unfolding.
The temperature is an enjoyable 62.6°F. The current temperature is at the minimum predicted for today.

Monday Oct 19, 2026

  • 86°F
  • 63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphSSW 198°
  • Humidity: 46%
  • UV index: 6
  • Sunrise: 7:00 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
On Monday, October 19, clear and sunny conditions are expected.
The maximum temperature will be a blazing 86°F, while the minimum anticipated temperature is an enjoyable 62.6°F.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is calculated to be a blazing 86°F. Note that heat index values are valued for light wind and location in the shade.
Expect a hotter feel as the forecasted high matches September's 82.2°F, rather than October's average of 77.5°F.
Sunrise was at 7:00 am and sunset will be at 6:13 pm; the daylight will last for 11h and 13min.

Hourly overview

Hourly temperatures

Warmest hour: 2 pm 84°C.
Coldest hour: 8 am 63°C.

Chance of precipitation

Highest chance: 12 am 7%.

Hourly weather forecast

  • 8 am
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphENE 78°
  • Humidity: 63%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 am
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphE 90°
  • Humidity: 54%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 10 am
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 1mphSE 134°
  • Humidity: 46%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 11 am
  • 79°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphS 189°
  • Humidity: 40%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 12 pm
  • 82°F
  • Feels like:
    82°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSSW 207°
  • Humidity: 37%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 1 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 219°
  • Humidity: 37%
  • Pressure: 29.88"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 2 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 218°
  • Humidity: 36%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 3 pm
  • 84°F
  • Feels like:
    84°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphSW 219°
  • Humidity: 37%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 82°F
  • Feels like:
    82°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 219°
  • Humidity: 38%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 5 pm
  • 81°F
  • Feels like:
    81°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSW 224°
  • Humidity: 41%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 77°F
  • Feels like:
    79°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSW 221°
  • Humidity: 48%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:13 pm
  • 7 pm
  • 75°F
  • Feels like:
    75°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphSSW 209°
  • Humidity: 56%
  • Pressure: 29.83"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 73°F
  • Feels like:
    73°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphS 190°
  • Humidity: 63%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 72°F
  • Feels like:
    72°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 3mphS 170°
  • Humidity: 69%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 70°F
  • Feels like:
    70°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphSSE 166°
  • Humidity: 74%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 68°F
  • Feels like:
    68°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 2mphSSE 151°
  • Humidity: 79%
  • Pressure: 29.85"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, bright skies and dry conditions are anticipated.
The temperature will be between the lowest temperature of 62.6°F and the highest temperature of 84.2°F. The hottest part of the day will be from 1 pm to 3 pm.
The temperature will feel more in line with September's average high than the expected maximum for October. The expected low will be alike with the average minimum in October, which is 61.5°F.
Updated: Oct 19, 2026 @ 14:35:13 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (7:35 am PDT) it is 62.6°F in Fullerton.

On Monday, sunshine and minimal clouds are in the outlook.

Today, the maximum temperature will be 86°F, while the minimum temperature will be 62.6°F. The maximum heat index, which combines air temperature and relative humidity, is assessed at 86°F.
The highest temperature will be a few degrees higher than the average maximum of 77.5°F in October. The lowest temperature will be in line with the average low of 61.5°F.

On Monday, in Fullerton, sunrise was at 7:00 am and sunset will be at 6:13 pm (PDT).

In Fullerton, the length of the day today will be 11h and 13min.