Costa Mesa Weather Forecast 15 Days, Weather in Costa Mesa Today
Current weather conditions and 15 day weather forecast for Costa Mesa, California, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Costa Mesa
| 24 December 2025 Wednesday 18.3 ° C / 64.9°F  Overcast |
Feels Like : 18.3 ° C / 64.9°F Humidity : % 81 Pressure : 1013 mb Wind Speed : 32.4 kmph / 20.1 miles from SE  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Costa Mesa, CA, USA
Weather Forecast for next 15 Days for Costa Mesa including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Costa Mesa, California state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 24 December 2025 Wednesday |  Heavy rain |
15.8 ° C (60.4°F) |
18.2 ° C (64.8°F) |
17 ° C (62.6°F) |
% 90 | 89% | 0 | Sunrise:06:54 AM Sunset: 04:49 PM |
Moonrise:10:12 AM Moonset: 09:22 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Patchy rain nearby |
15.8 ° C (60.4°F) |
17.2 ° C (63°F) |
16.8 ° C (62.2°F) |
% 94 | 79% | 0.6 | Sunrise:06:54 AM Sunset: 04:50 PM |
Moonrise:10:40 AM Moonset: 10:24 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Heavy rain |
14.3 ° C (57.8°F) |
16.1 ° C (61°F) |
15.5 ° C (59.8°F) |
% 85 | 88% | 0.4 | Sunrise:06:55 AM Sunset: 04:50 PM |
Moonrise:11:07 AM Moonset: 11:27 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Sunny |
12.6 ° C (54.7°F) |
15.6 ° C (60.1°F) |
14.1 ° C (57.3°F) |
% 66 | 0% | 0.5 | Sunrise:06:55 AM Sunset: 04:51 PM |
Moonrise:11:35 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Sunny |
12.9 ° C (55.2°F) |
17.2 ° C (62.9°F) |
14.4 ° C (58°F) |
% 59 | 0% | 0 | Sunrise:06:55 AM Sunset: 04:52 PM |
Moonrise:12:04 PM Moonset: 12:31 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Patchy rain nearby |
14 ° C (57.2°F) |
19 ° C (66.2°F) |
16 ° C (60.8°F) |
% 51 | 75% | 4 | Sunrise:06:56 AM Sunset: 04:52 PM |
Moonrise:12:36 PM Moonset: 01:39 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday | Patchy rain nearby |
15.2 ° C (59.4°F) |
19.1 ° C (66.4°F) |
16.7 ° C (62°F) |
% 73 | 79% | 4 | Sunrise:06:56 AM Sunset: 04:53 PM |
Moonrise:01:16 PM Moonset: 02:51 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday |  Moderate rain |
15.4 ° C (59.6°F) |
16.5 ° C (61.6°F) |
15.9 ° C (60.7°F) |
% 88 | 87% | 4 | Sunrise:06:56 AM Sunset: 04:54 PM |
Moonrise:02:04 PM Moonset: 04:06 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Patchy rain nearby |
14.2 ° C (57.6°F) |
16.8 ° C (62.2°F) |
15.5 ° C (59.9°F) |
% 71 | 72% | 4 | Sunrise:06:56 AM Sunset: 04:55 PM |
Moonrise:03:03 PM Moonset: 05:20 AM Moon Phase ( Waxing Gibbous ) |
|
| 02 January 2026 Friday | Sunny |
13.5 ° C (56.2°F) |
16.8 ° C (62.3°F) |
15 ° C (59°F) |
% 67 | 0% | 5 | Sunrise:06:56 AM Sunset: 04:55 PM |
Moonrise:04:11 PM Moonset: 06:29 AM Moon Phase ( Waxing Gibbous ) |
|
| 03 January 2026 Saturday | Sunny |
13.9 ° C (57°F) |
18.2 ° C (64.7°F) |
15.7 ° C (60.2°F) |
% 59 | 0% | 5 | Sunrise:06:57 AM Sunset: 04:56 PM |
Moonrise:05:24 PM Moonset: 07:29 AM Moon Phase ( Full Moon ) |
|
| 04 January 2026 Sunday | Sunny |
14.6 ° C (58.4°F) |
18.5 ° C (65.2°F) |
16.4 ° C (61.5°F) |
% 56 | 0% | 5 | Sunrise:06:57 AM Sunset: 04:57 PM |
Moonrise:06:38 PM Moonset: 08:17 AM Moon Phase ( Waning Gibbous ) |
|
| 05 January 2026 Monday | Sunny |
15.9 ° C (60.5°F) |
20.2 ° C (68.3°F) |
17.8 ° C (64.1°F) |
% 60 | 0% | 5 | Sunrise:06:57 AM Sunset: 04:58 PM |
Moonrise:07:49 PM Moonset: 08:57 AM Moon Phase ( Waning Gibbous ) |
|
| 06 January 2026 Tuesday |  Partly Cloudy |
16.8 ° C (62.2°F) |
20.3 ° C (68.5°F) |
18.2 ° C (64.8°F) |
% 70 | 0% | 5 | Sunrise:06:57 AM Sunset: 04:59 PM |
Moonrise:08:54 PM Moonset: 09:30 AM Moon Phase ( Waning Gibbous ) |
|
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