Costa Mesa, CA Weather Forecast and Current Conditions

WEATHER ALERTS - Air Quality Alert - Dense Fog Advisory

Current Conditions From Nearby Local Station

Partly Cloudy with Mist and Fog 58°F
Feels Like 58°F  
Humidity 94% Dew Point 56°F Wind SW 1 MPH Gusts 2 Barometer 29.98 in.
Report from a personal weather station 2.4 mi. SSE of central Costa Mesa
at

Point Forecast at a Glance

TueDec 16
Tue Dec 16: Partly Cloudy, Low 51F
 
51
WedDec 17
Wed Dec 17: Mostly Cloudy, High 69F, Low 52F
69
52
ThuDec 18
Thu Dec 18: Mostly Cloudy, High 73F, Low 54F
73
54
FriDec 19
Fri Dec 19: Mostly Cloudy, High 71F, Low 53F
71
53
SatDec 20
Sat Dec 20: Partly Sunny, High 68F, Low 53F
68
53
SunDec 21
Sun Dec 21: Mostly Cloudy, High 69F, Low 53F
69
53
MonDec 22
Mon Dec 22: Mostly Cloudy, High 69F, Low 52F
69
52

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 68°F to 73°F. Dry weather expected throughout the week.

Climate Context

This week's forecast shows temperatures running 2°F above the historical average for December. Normal highs for this period are around 67°F with lows around 46°F.

This Date in Weather History

1835 - New England experienced one of their coldest days of record. At noon on that bitterly cold Wednesday the mercury stood at four degrees below at Boston, 15 degrees below at Norfolk CT, and 17 degrees below at Hanover NH. The temperature at Boston was 12 degrees below zero by sunset. Gale force winds accompanied the severe cold, and that night a great New York City fire destroyed much of the financial district.

More on this and other weather history

Costa Mesa, CA 7 Day Weather Forecast Details

Tuesday Dec 16

Partly Cloudy

Night: Patchy fog. Otherwise, mostly cloudy, with a low around 51. South wind around 5 mph becoming calm.

Wednesday Dec 17

Mostly Cloudy

Day: Areas of fog before 1pm. Otherwise, partly sunny, with a high near 69. Calm wind becoming west around 5 mph in the afternoon.

Partly Cloudy

Night: Patchy fog. Otherwise, mostly cloudy, with a low around 52. South wind around 5 mph becoming calm after midnight.

Thursday Dec 18

Mostly Cloudy

Day: Patchy fog before 4pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 73. Calm wind becoming west around 5 mph in the afternoon.

Partly Cloudy

Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 54. Calm wind.

Friday Dec 19

Mostly Cloudy

Day: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 71.

Partly Cloudy

Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 53.

Saturday Dec 20

Partly Sunny

Day: Partly sunny, with a high near 68.

Partly Cloudy

Night: Patchy fog. Otherwise, mostly cloudy, with a low around 53.

Sunday Dec 21

Mostly Cloudy

Day: Patchy fog before 10am. Otherwise, partly sunny, with a high near 69.

Partly Cloudy

Night: Patchy fog. Otherwise, mostly cloudy, with a low around 53.

Monday Dec 22

Mostly Cloudy

Day: Patchy fog. Otherwise, partly sunny, with a high near 69.

Partly Cloudy

Night: Patchy fog. Otherwise, mostly cloudy, with a low around 52.

Tuesday Dec 23

Showers

Day: A slight chance of showers. Mostly cloudy, then gradually becoming sunny, with a high near 67.


About Costa Mesa, CA

Costa Mesa ( KOH-stə MAY-sə; Spanish for 'Mesa Coast') is a city in Orange County, California, United States. Since its incorporation in 1953, the city has grown from a semi-rural farming community of 16,840 to an urban area including part of the South Coast Plaza–John Wayne Airport edge city, one of the region's largest commercial clusters, with an economy based on retail, commerce, and light manufacturing. The population was 111,918 at the 2020 census.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.