Weather forecast for todayCosta Mesa, CA
Weather forecast for today
Current condition 4:23 am PDT
- 63°F
- Feels like:63°F
Fair
- Precipitation: 0"
- Wind: 1mphNNE 30°
- Humidity: 93%
- Dewpoint: 61°F
- Pressure: 29.86"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Currently, in Costa Mesa, the atmosphere is calm, with fair skies overhead.
The temperature is a breezy 62.6°F. The current temperature is almost at the minimum-predicted 64.4°F for today.
The temperature is a breezy 62.6°F. The current temperature is almost at the minimum-predicted 64.4°F for today.
Wednesday Oct 21, 2026
- 73°F
- 64°F
PM Showers
- Precip. probability: 59%
- Precipitation: 0.67"
- Wind: 9mphS 180°
- Humidity: 77%
- UV index: 4
- Sunrise: 7:01 am PDT
- Sunset: 6:10 pm PDT
- details ▼
Today, patchy afternoon showers could develop as the clouds thicken.
The likelihood of rainfall is high, and precipitation will be moderate. A slight fluctuation in temperature is expected, achieving a maximum of a temperate 73.4°F and dipping to a minimum of a comfortable 64.4°F.
The temperature will be in line 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.
The likelihood of rainfall is high, and precipitation will be moderate. A slight fluctuation in temperature is expected, achieving a maximum of a temperate 73.4°F and dipping to a minimum of a comfortable 64.4°F.
The temperature will be in line 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: 5 am 63°C.
Coldest hour: 5 am 63°C.
Chance of precipitation
Highest chance: 7 pm 85%.
Hourly weather forecast
- 6 am
- 63°F
- Feels like:63°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphENE 69°
- Humidity: 92%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:01 am
- 8 am
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphESE 112°
- Humidity: 84%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 70°F
- Feels like:70°F
Mostly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSSW 193°
- Humidity: 75%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 12 pm
- 73°F
- Feels like:73°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 9mphSW 226°
- Humidity: 71%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 72°F
- Feels like:72°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 7mphSW 220°
- Humidity: 68%
- Pressure: 29.83"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 4 pm
- 72°F
- Feels like:72°F
Showers
- Precip. probability: 38%
- Precipitation: 0.04"
- Wind: 6mphSSW 213°
- Humidity: 64%
- Pressure: 29.8"Hg
- Visibility: 7mi
- UV index: 1
- details ▼
- 6 pm
- 70°F
- Feels like:70°F
Rain
- Precip. probability: 60%
- Precipitation: 0.08"
- Wind: 5mphSSE 164°
- Humidity: 70%
- Pressure: 29.8"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
Sunset: 6:10 pm
- 8 pm
- 68°F
- Feels like:68°F
Rain
- Precip. probability: 79%
- Precipitation: 0.08"
- Wind: 5mphSE 137°
- Humidity: 79%
- Pressure: 29.83"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
- 10 pm
- 68°F
- Feels like:68°F
Rain
- Precip. probability: 73%
- Precipitation: 0.12"
- Wind: 5mphSSE 156°
- Humidity: 81%
- Pressure: 29.83"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
Today, in Costa Mesa, a combination of damp and cloud-filled weather is expected.
Rainfall is expected at 1 pm, and from 3 pm to 11 pm. The most intense rain will be falling at 7 pm, 10 pm and 11 pm.
The temperature will vary between a minimum of 62.6°F and a maximum of 73.4°F. The warmest part of the day will be around noon.
The high temperature is expected to be alike with October's usual value of 73°F. The expected low will be also resembling the average minimum in October, which is 62.1°F.
Rainfall is expected at 1 pm, and from 3 pm to 11 pm. The most intense rain will be falling at 7 pm, 10 pm and 11 pm.
The temperature will vary between a minimum of 62.6°F and a maximum of 73.4°F. The warmest part of the day will be around noon.
The high temperature is expected to be alike with October's usual value of 73°F. The expected low will be also resembling the average minimum in October, which is 62.1°F.
Updated: Oct 21, 2026 @ 11:23:04 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 (4:23 am PDT) it is 62.6°F in Costa Mesa.
Today, on-and-off showers may develop in the afternoon.
Moderate precipitation of 0.67" is expected. The chance of rainfall is 59%.
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).
In Costa Mesa, California, today, there will be 11h and 10min of daylight.
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: 4:23am PDT
- Sunrise: 7:01 am PDT
- Sunset: 6:10 pm PDT
- Timezone: America/Los_Angeles
Nearby Costa Mesa, California, USA
- Newport Beach (2 mi)
- Corona Del Mar (4 mi)
- Huntington Beach (5 mi)
- Fountain Valley (5 mi)
- Newport Coast (6 mi)
- Irvine (7 mi)
- Santa Ana (8 mi)
- Midway City (8 mi)
- Westminster (9 mi)
- Tustin (9 mi)
- Garden Grove (9 mi)
- East Irvine (9 mi)
- Laguna Beach (11 mi)
- Sunset Beach (11 mi)
- North Tustin (11 mi)
- Surfside (11 mi)
- Laguna Woods (11 mi)
- Stanton (12 mi)
- Aliso Viejo (12 mi)
- Seal Beach (13 mi)
- Lake Forest (13 mi)
- Laguna Hills (13 mi)
- Anaheim (14 mi)
- Villa Park (14 mi)
California, USA - most visited locations
- Los Angeles
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- Fremont
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