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As of 09:58 PDT

Weather in Costa Mesa, CA

79°Current weather

Costa Mesa, Sunday, 9 August, 09:58

Mostly clear. Feels like 80°. High 95°, low 72°.

Pressure29.88 inHg
Wind2 mph W
Humidity76%
Visibility6.2 mi
Dew point70°

10-day forecast for Costa Mesa, CA: 68° to 95°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

95°
Best day: Sunday, August 9
73°
Worst day: Thursday, August 13

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 1094° / 70°0Mostly clear
MorningOvercast76°feels 77°
AfternoonMostly clear94°feels 107°
EveningPartly cloudy79°feels 79°
OvernightClear72°feels 73°
94 °Mostly clear

Costa Mesa, Monday, 10 August

Mostly clear. High 94°, low 70°.

Pressure29.91 inHg
Wind7.7 mph SW
Humidity63%
Visibility5.9 mi
Dew point64°
Tue, 1177° / 72°0Mostly clear
MorningOvercast73°feels 74°
AfternoonOvercast77°feels 77°
EveningClear74°feels 74°
OvernightClear72°feels 73°
77 °Mostly clear

Costa Mesa, Tuesday, 11 August

Mostly clear. High 77°, low 72°.

Pressure29.97 inHg
Wind9.7 mph SW
Humidity60%
Visibility6.2 mi
Dew point62°
Wed, 1276° / 70°0Clear
MorningClear72°feels 73°
AfternoonOvercast76°feels 77°
EveningClear71°feels 71°
OvernightMostly clear71°feels 72°
76 °Clear

Costa Mesa, Wednesday, 12 August

Clear. High 76°, low 70°.

Pressure29.91 inHg
Wind8.1 mph SW
Humidity63%
Visibility5.9 mi
Dew point63°
Thu, 1373° / 68°0Overcast
MorningOvercast70°feels 70°
AfternoonOvercast73°feels 73°
EveningOvercast71°feels 71°
OvernightOvercast69°feels 70°
73 °Overcast

Costa Mesa, Thursday, 13 August

Overcast. High 73°, low 68°.

Pressure29.91 inHg
Wind10 mph SW
Humidity68%
Visibility—
Dew point61°
Fri, 1473° / 68°0Overcast
MorningOvercast69°feels 69°
AfternoonOvercast72°feels 72°
EveningOvercast72°feels 72°
OvernightOvercast69°feels 69°
73 °Overcast

Costa Mesa, Friday, 14 August

Overcast. High 73°, low 68°.

Pressure29.97 inHg
Wind10.1 mph SW
Humidity66%
Visibility—
Dew point60°
Sat, 1574° / 70°0Overcast
MorningOvercast71°feels 71°
AfternoonOvercast74°feels 74°
EveningOvercast72°feels 72°
OvernightOvercast72°feels 72°
74 °Overcast

Costa Mesa, Saturday, 15 August

Overcast. High 74°, low 70°.

Pressure30.00 inHg
Wind10.1 mph SW
Humidity62%
Visibility—
Dew point60°
Sun, 1676° / 71°0Overcast
MorningOvercast72°feels 72°
AfternoonOvercast76°feels 76°
EveningOvercast76°feels 76°
OvernightOvercast73°feels 73°
76 °Overcast

Costa Mesa, Sunday, 16 August

Overcast. High 76°, low 71°.

Pressure30.06 inHg
Wind12.6 mph W
Humidity62%
Visibility—
Dew point61°
Mon, 1780° / 72°0Mostly clear
MorningMostly clear73°feels 74°
AfternoonMostly clear78°feels 78°
EveningMostly clear78°feels 78°
OvernightMostly clear73°feels 73°
80 °Mostly clear

Costa Mesa, Monday, 17 August

Mostly clear. High 80°, low 72°.

Pressure30.03 inHg
Wind12.8 mph W
Humidity59%
Visibility—
Dew point62°
Tue, 1881° / 72°0Partly cloudy
MorningPartly cloudy74°feels 74°
AfternoonPartly cloudy79°feels 79°
EveningPartly cloudy80°feels 81°
OvernightPartly cloudy74°feels 74°
81 °Partly cloudy

Costa Mesa, Tuesday, 18 August

Partly cloudy. High 81°, low 72°.

Pressure29.94 inHg
Wind11.3 mph W
Humidity59%
Visibility—
Dew point62°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Costa Mesa, CA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.