 |
 Current Costa Mesa Weather Conditions |
Updated September 19th at 4:53 am |
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| Overcast |
| Temperature: | 70°F |
Dew Point: | 64°F |
| Barometer: | 29.89 inHg |
Wind: | N 6 Mph |
| Humidity: | 83.0% |
Visibility: | 0M |
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| Costa Mesa Weather Forecast Summary |
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Today
Sep 19th
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Saturday
Sep 20th
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Sunday
Sep 21st
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Monday
Sep 22nd
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Tuesday
Sep 23rd
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 |
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 |
Mostly Sunny |
Mostly Sunny |
Cloudy |
Mostly Sunny |
Showers |
78°F
|
81°F
62°F |
75°F
63°F |
78°F
60°F |
72°F
63°F |
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| Costa Mesa Detailed Weather Forecast |
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| Friday, September 19th, 2025 |
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Morning |
Temperature: 77°F |
| Mostly sunny. Windy at times. |
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Afternoon |
Temperature: 71°F |
| Sunny. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Saturday, September 20th, 2025 |
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Overnight |
Temperature: 66°F |
| Clear. |
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Morning |
Temperature: 80°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 72°F |
| Sunny. |
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Evening |
Temperature: 63°F |
| Clear with cloudy periods. |
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| Sunday, September 21st, 2025 |
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Overnight |
Temperature: 65°F |
| Cloudy. |
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Morning |
Temperature: 74°F |
| Cloudy. |
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Afternoon |
Temperature: 67°F |
| Cloudy. |
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Evening |
Temperature: 64°F |
| Clear with cloudy periods. |
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| Monday, September 22nd, 2025 |
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Overnight |
Temperature: 64°F |
| Clear. |
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Morning |
Temperature: 78°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 70°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 63°F |
| Clear. |
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| Tuesday, September 23rd, 2025 |
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Overnight |
Temperature: 64°F |
| Cloudy with showers likely. |
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Morning |
Temperature: 70°F |
| Sunny with cloudy periods with showers likely. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 69°F |
| Sunny with showers likely. Slight chance of a thunderstorm. |
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Evening |
Temperature: 65°F |
| Clear with cloudy periods. |
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| Wednesday, September 24th, 2025 |
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Overnight |
Temperature: 64°F |
| Clear. |
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Morning |
Temperature: 75°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 70°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 64°F |
| Clear. |
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| Thursday, September 25th, 2025 |
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Overnight |
Temperature: 64°F |
| Clear. |
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Morning |
Temperature: 75°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 68°F |
| Sunny. |
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Evening |
Temperature: 64°F |
| Clear. |
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| Friday, September 26th, 2025 |
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Overnight |
Temperature: 65°F |
| Clear. |
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Morning |
Temperature: 79°F |
| Sunny. |
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Afternoon |
Temperature: 71°F |
| Sunny. |
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Evening |
Temperature: 67°F |
| Clear. |
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| Saturday, September 27th, 2025 |
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Overnight |
Temperature: 67°F |
| Clear. Slight chance of a thunderstorm. |
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Morning |
Temperature: 79°F |
| Sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 75°F |
| Sunny. |
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Evening |
Temperature: 73°F |
| Clear. |
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