Weather forecast for todayCosta Mesa, CA
Weather forecast for today
Current condition 12:06 am PDT
- 66°F
- Feels like:66°F
Cloudy
- Precipitation: 0"
- Wind: 1mphW 260°
- Humidity: 81%
- Dewpoint: 61°F
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
At the moment, the weather is gloomy with extensive cloud cover.
The temperature is a breezy 66.2°F. The current temperature is a few degrees off the maximum of 73.4°F for today.
The temperature is a breezy 66.2°F. The current temperature is a few degrees off the maximum of 73.4°F for today.
Wednesday Oct 21, 2026
- 73°F
- 64°F
PM Showers
- Precip. probability: 84%
- Precipitation: 0"
- Wind: 9mphS 186°
- Humidity: 72%
- UV index: 4
- Sunrise: 7:01 am PDT
- Sunset: 6:10 pm PDT
- details ▼
Today, in Costa Mesa, patchy afternoon showers could develop as the clouds thicken.
Minimal precipitation is predicted. Slight temperature shifts from a high of a warm 73.4°F to a low of a comfortable 64.4°F are anticipated.
The expected temperature peak will correspond with October's average maximum of 73°F.
Sunrise will be at 7:01 am and sunset at 6:10 pm; the daylight will last for 11h and 10min.
Minimal precipitation is predicted. Slight temperature shifts from a high of a warm 73.4°F to a low of a comfortable 64.4°F are anticipated.
The expected temperature peak will correspond with October's average maximum of 73°F.
Sunrise will be at 7:01 am and sunset at 6:10 pm; the daylight will last for 11h and 10min.
Hourly overview
Hourly temperatures
Warmest hour: 1 pm 73°C.
Coldest hour: 7 am 64°C.
Coldest hour: 7 am 64°C.
Chance of precipitation
Highest chance: 7 pm 77%.
Hourly weather forecast
- 2 am
- 66°F
- Feels like:66°F
Mostly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphN 7°
- Humidity: 87%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphNNE 17°
- Humidity: 87%
- Pressure: 29.85"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 6 am
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphENE 74°
- Humidity: 86%
- Pressure: 29.83"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
Sunrise: 7:01 am
- 8 am
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphE 98°
- Humidity: 84%
- Pressure: 29.83"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 10 am
- 72°F
- Feels like:72°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphS 183°
- Humidity: 72%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 12 pm
- 73°F
- Feels like:73°F
Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 9mphSW 215°
- Humidity: 69%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 2 pm
- 72°F
- Feels like:73°F
Few Showers
- Precip. probability: 31%
- Precipitation: 0.04"
- Wind: 9mphSSW 212°
- Humidity: 69%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 72°F
- Feels like:72°F
Showers
- Precip. probability: 40%
- Precipitation: 0.04"
- Wind: 7mphSW 224°
- Humidity: 64%
- Pressure: 29.8"Hg
- Visibility: 7mi
- UV index: 1
- details ▼
- 6 pm
- 70°F
- Feels like:70°F
Rain
- Precip. probability: 84%
- Precipitation: 0.08"
- Wind: 6mphSSE 156°
- Humidity: 69%
- Pressure: 29.8"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
Sunset: 6:10 pm
- 8 pm
- 70°F
- Feels like:70°F
Scattered Thunderstorms
- Precip. probability: 59%
- Precipitation: 0.04"
- Wind: 6mphSSE 155°
- Humidity: 79%
- Pressure: 29.83"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 pm
- 68°F
- Feels like:70°F
Thunderstorms
- Precip. probability: 63%
- Precipitation: 0.12"
- Wind: 6mphSSE 166°
- Humidity: 81%
- Pressure: 29.83"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
Today, in Costa Mesa, a combination of cloudy, wet and turbulent weather is anticipated.
Rainfall is anticipated from 2 pm to 11 pm. With light precipitation of 0.12", most rainfall is expected at 10 pm.
The temperature will vary between a minimum of 64.4°F and a maximum of 73.4°F. The warmest part of the day will be from 11 am to 1 pm and at 3 pm.
The forecasted high will be in line with the typical October maximum of 73°F. The temperature low is forecasted to be also resembling the usual October value of 62.1°F.
Rainfall is anticipated from 2 pm to 11 pm. With light precipitation of 0.12", most rainfall is expected at 10 pm.
The temperature will vary between a minimum of 64.4°F and a maximum of 73.4°F. The warmest part of the day will be from 11 am to 1 pm and at 3 pm.
The forecasted high will be in line with the typical October maximum of 73°F. The temperature low is forecasted to be also resembling the usual October value of 62.1°F.
Updated: Oct 21, 2026 @ 07:06:32 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Currently (12:06 am PDT) it is 66.2°F in Costa Mesa.
Today, isolated showers may pop up in the afternoon.
There is a high likelihood of rainfall, but precipitation will be minimal.
Today, the highest temperature will be 73.4°F, while the lowest temperature will be 64.4°F.
The maximum temperature will be in line with the average highest temperature of 73°F in October. The lowest temperature will be also in line with the average low of 62.1°F.
The maximum temperature will be in line with the average highest temperature of 73°F in October. The lowest temperature will be also in line with the average low of 62.1°F.
On Wednesday, in Costa Mesa, sunrise will be at 7:01 am and sunset at 6:10 pm (PDT).
Today, the daylight will last for 11h and 10min.
Costa Mesa, California, USA
- en: Costa Mesa, California, USA
- es: Costa Mesa, California, EE.UU.
- hr: Kosta Mesa, Kalifornija, SAD
- mk: Kosta Mesa, Kalifornija, SAD
- sr: Kosta Mesa, Kalifornija, SAD
- zh: 科斯塔梅萨, 加利福尼亚州, 美国
- Latitude: 33.641132°
- Longitude: -117.918669°
- Elevation: 98 ft
- Current time: 12:25am PDT
- Sunrise: 7:01 am PDT
- Sunset: 6:10 pm PDT
- Timezone: America/Los_Angeles
Nearby Costa Mesa, California, USA
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California, USA - most visited locations
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