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Costa Mesa, CA Weather
Current conditions
Observed at John Wayne-Orange County Airport · 51 min ago
Forecast
10-day-
Tonight
Rain showers likely. Mostly cloudy, with a low around 59. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
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Friday
A slight chance of rain showers before 11am. Mostly sunny, with a high near 70. Southwest wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
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Friday Night
Mostly clear, with a low around 56. North wind 0 to 5 mph.
National Weather Service forecast updated 1 day ago.
Hourly
Hourly forecast- Now60°62%
- 4 AM60°62%
- 5 AM60°21%
- 6 AM60°21%
- 7 AM60°21%
- 8 AM62°21%
- 9 AM64°21%
- 10 AM67°21%
- 11 AM68°
- 12 PM69°
- 1 PM69°
- 2 PM70°
- 3 PM70°
- 4 PM69°
- 5 PM69°
- 6 PM67°
- 7 PM66°
- 8 PM64°
- 9 PM62°
- 10 PM61°
- 11 PM60°
- Sat12 AM59°
- 1 AM59°
- 2 AM58°
Daily forecast
Details- ThuOct 22Showers And Thunderstorms Likely64%59°68°
- TodayOct 23Slight Chance Rain Showers then Mostly Sunny21%56°70°
- SatOct 24Sunny58°74°
- SunOct 25Sunny59°77°
- MonOct 26Sunny60°80°
- TueOct 27Mostly Sunny59°78°
- WedOct 28Mostly Sunny59°77°
- ThuOct 29Cloudy62°73°
- FriOct 30Sunny61°72°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Costa Mesa
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Air quality
Forecast
- FriGood (37)
N Coastal Orange, CA reporting area. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyLong Beach Area, records since 1958. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Los Angeles 55 km
- Long Beach 29 km
- Anaheim 22 km
- Riverside 59 km
- Santa Ana 13 km
- Irvine 9 km
- Huntington Beach 8 km
- Garden Grove 15 km
- Rancho Cucamonga 60 km
- Ontario 53 km
- Corona 42 km
- Pomona 49 km
Forecasters' discussion
From the National Weather Service office in SGX, issued 2 hrs ago
Synopsis
Scattered mostly light showers will continue through this morning, decrease this afternoon, and end from the northwest tonight. Then dry and warmer for the weekend through Monday with high temperatures warming to around average. Then gradually cooler for next Tuesday through Thursday.
Aviation
230530Z...SCT -SHRA mountains westward will continue through Friday morning. Cloud bases generally above 3500 feet MSL, except briefly down to 2500 feet and vis 4-6SM in SHRA. Partial obscuration of mountains will continue through tonight. Onshore wind gusts 25-30 kts along desert slopes and locally into deserts will gradually taper off overnight. -SHRA will gradually taper off from north to south Friday afternoon, but at the same time increase in mountains. Clearing all areas after 02Z Friday evening.
Marine
A storm system will slowly move through the coastal waters through Friday. Isolated northwest wind gusts will occasionally reach 20 knots Friday. No hazardous marine conditions are expected Friday night through Tuesday.
Beaches
Astronomical high tides will create minor to moderate coastal flooding starting Saturday. Tides are 1.4-1.6 feet above predictions. Morning high tides could reach 7 feet Saturday morning and are likely to exceed 7.5 feet by Monday morning. Locally significant impacts expected from Monday to Wednesday.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.