Costa Mesa, California · now
Cloudy
- High / Low
- — / 57°
- Wind
- 0 mph N
- Humidity
- 77%
Tomorrow· Wednesday70°/55°· Mostly Sunny
2° warmer than yesterday at this time
Current weather and 7-day forecast for Costa Mesa, California, sourced directly from the National Weather Service. Expect cloudy today.
Temperature · next 24 hours
Next 24 hours
-
5 AM
58°
4%
-
7 AM
58°
4%
-
9 AM
63°
4%
-
11 AM
67°
0%
-
1 PM
69°
0%
-
3 PM
69°
0%
-
5 PM
68°
0%
-
7 PM
63°
0%
-
9 PM
60°
0%
-
11 PM
59°
0%
-
1 AM
58°
0%
-
3 AM
56°
0%
Live radar
View full radar →7 days
- Today 5/13 Cloudy 4% — · 57°
- Wed 5/13 Mostly Sunny 4% 70° · 55°
- Thu 5/14 Mostly Sunny 1% 71° · 56°
- Fri 5/15 Mostly Sunny 1% 70° · 56°
- Sat 5/16 Mostly Sunny 0% 70° · 57°
- Sun 5/17 Sunny 0% 71° · 57°
- Mon 5/18 Sunny 0% 73° · 58°
Extended outlook days 8–17
- Tue 5/19 Cloudy 0% 71° · 63°
- Wed 5/20 Cloudy 1% 74° · 63°
- Thu 5/21 Cloudy 2% 71° · 63°
- Fri 5/22 Cloudy 1% 70° · 63°
- Sat 5/23 Cloudy 4% 69° · 62°
- Sun 5/24 Cloudy 3% 71° · 62°
- Mon 5/25 Sunny 3% 74° · 63°
- Tue 5/26 Cloudy 0% 77° · 63°
- Wed 5/27 Cloudy 0% 84° · 65°
- Thu 5/28 Cloudy 0% 84° · 66°
Days 8+ from the Open-Meteo multi-model ensemble — treat as a guide; accuracy drops past day 7.
Best time to head outside
Picks the upcoming daytime hour with the most favorable conditions for each activity. Factors in temperature, wind, precipitation timing, and pollen.
- Run6 AM
comfortable at 57°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100 - Bike8 AM
comfortable at 61°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100 - Golf8 AM
comfortable at 61°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100 - Picnic12 PM
comfortable at 68°F · calm wind · no rain expected · pollen high today — allergy sufferers, take note
Excellent100 / 100
Climate normals
What weather to expect in Costa Mesa
Costa Mesa in May typically averages 68° highs and 57° lows, with about 6 days of rain. The hottest stretch is August (average high 77°); the coldest is January (average low 50°). April is the wettest month on average.
| Month | Avg high | Avg low | Rainy days |
|---|---|---|---|
| Jan | 66° | 50° | 6 |
| Feb | 65° | 51° | 6 |
| Mar | 67° | 53° | 8 |
| Apr | 66° | 55° | 9 |
| May | 68° | 57° | 6 |
| Jun | 71° | 60° | 2 |
| Jul | 74° | 63° | 0 |
| Aug | 77° | 64° | 1 |
| Sep | 76° | 63° | 5 |
| Oct | 72° | 58° | 4 |
| Nov | 67° | 53° | 6 |
| Dec | 65° | 51° | 3 |
Normals derived from the past two years of observations via Open-Meteo's historical archive.
More for Costa Mesa
Other cities in California