10-Day Weather Forecast for Costa Mesa, California - The Weather Channel | weather.com
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10 Day Weather-

As of 3:21 am PDT
alertLevel3

Extreme Heat Watch

Today

Partly Cloudy Day Partly Cloudy
71°/54°
Rain drop 4%
Subtract

Day

71°
Partly Cloudy Day
Rain drop
4%
SSE 10 mph

A mix of clouds and sun. High 71F. Winds SSE at 5 to 10 mph.

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  • Humidity
    Humidity62%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:03 am
  • Sunset
    Sunset6:58 pm

Night

54°
Partly Cloudy Night
Rain drop
20%
SSE 7 mph

Partly cloudy this evening with more clouds for overnight. Low 54F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:37 am
  • Moonset
    Moonset2:43 pm
  • Moon Phase - Day 25 Waning Crescent

Sun 15

Partly Cloudy Day AM Clouds/PM Sun
70°/55°
Rain drop 20%
Add

Day

70°
Partly Cloudy Day
Rain drop
20%
SSW 8 mph

Cloudy early with partial sunshine expected late. Expect mist and reduced visibilities at times. High near 70F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity69%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset6:59 pm

Night

55°
Mostly Cloudy Night
Rain drop
13%
SE 6 mph

Mostly cloudy. Low around 55F. Winds light and variable.

  • Humidity
    Humidity83%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:12 am
  • Moonset
    Moonset3:46 pm
  • Moon Phase - Day 26 Waning Crescent

Mon 16

Foggy AM Fog/PM Sun
77°/58°
Rain drop 19%
Add

Day

77°
Foggy
Rain drop
19%
W 8 mph

Areas of fog early, then partly cloudy in the afternoon. Near record high temperatures. High 77F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:00 am
  • Sunset
    Sunset7:00 pm

Night

58°
Partly Cloudy Night
Rain drop
4%
SSE 5 mph

Partly cloudy. Low 58F. Winds light and variable.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:44 am
  • Moonset
    Moonset4:51 pm
  • Moon Phase - Day 27 Waning Crescent

Tue 17

Partly Cloudy Day Partly Cloudy
79°/58°
Rain drop 3%
Add

Day

79°
Partly Cloudy Day
Rain drop
3%
WSW 8 mph

Partly cloudy skies. Near record high temperatures. High 79F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset7:01 pm

Night

58°
Mostly Clear Night
Rain drop
4%
S 5 mph

Mainly clear early, then a few clouds later on. Low 58F. Winds light and variable.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:13 am
  • Moonset
    Moonset5:55 pm
  • Moon Phase - Day 28 Waning Crescent

Wed 18

Partly Cloudy Day Partly Cloudy
79°/58°
Rain drop 4%
Add

Day

79°
Partly Cloudy Day
Rain drop
4%
SSW 8 mph

Partly cloudy skies. Near record high temperatures. High 79F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:57 am
  • Sunset
    Sunset7:01 pm

Night

58°
Mostly Clear Night
Rain drop
5%
S 6 mph

Clear skies with a few passing clouds. Low 58F. Winds light and variable.

  • Humidity
    Humidity80%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:41 am
  • Moonset
    Moonset7:00 pm
  • Moon Phase - Day 0 New Moon

Thu 19

Mostly Clear Day Mostly Sunny
79°/59°
Rain drop 18%
Add

Day

79°
Mostly Clear Day
Rain drop
18%
W 9 mph

Sun and a few passing clouds. Near record high temperatures. High 79F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:56 am
  • Sunset
    Sunset7:02 pm

Night

59°
Mostly Clear Night
Rain drop
5%
SSW 6 mph

Clear to partly cloudy. Low 59F. Winds light and variable.

  • Humidity
    Humidity73%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:09 am
  • Moonset
    Moonset8:07 pm
  • Moon Phase - Day 1 Waxing Crescent

Fri 20

Mostly Clear Day Mostly Sunny
81°/59°
Rain drop 3%
Add

Day

81°
Mostly Clear Day
Rain drop
3%
WSW 8 mph

Generally sunny. High 81F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:55 am
  • Sunset
    Sunset7:03 pm

Night

59°
Mostly Clear Night
Rain drop
5%
SSE 5 mph

Mostly clear skies. Low 59F. Winds light and variable.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:39 am
  • Moonset
    Moonset9:17 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Mostly Clear Day Mostly Sunny
80°/59°
Rain drop 4%
Add

Day

80°
Mostly Clear Day
Rain drop
4%
SSW 8 mph

Mostly sunny skies. High near 80F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:53 am
  • Sunset
    Sunset7:04 pm

Night

59°
Foggy
Rain drop
19%
SSE 5 mph

Partly cloudy skies during the evening. Fog developing overnight. Low 59F. Winds light and variable.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:13 am
  • Moonset
    Moonset10:29 pm
  • Moon Phase - Day 3 Waxing Crescent

Sun 22

Foggy AM Fog/PM Clouds
74°/59°
Rain drop 18%
Add

Day

74°
Foggy
Rain drop
18%
S 9 mph

Mostly cloudy skies with some morning fog. High 74F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:52 am
  • Sunset
    Sunset7:04 pm

Night

59°
Foggy
Rain drop
21%
SSE 5 mph

Mostly cloudy skies early, then becoming foggy and damp late. Low 59F. Winds light and variable.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:53 am
  • Moonset
    Moonset11:42 pm
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Foggy AM Fog/PM Sun
74°/59°
Rain drop 10%
Add

Day

74°
Foggy
Rain drop
10%
S 9 mph

Foggy early, then partly cloudy later in the day. High 74F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:51 am
  • Sunset
    Sunset7:05 pm

Night

59°
Mostly Cloudy Night
Rain drop
5%
SSE 5 mph

Mostly cloudy. Low 59F. Winds light and variable.

  • Humidity
    Humidity71%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:39 am
  • Moonset
    Moonset--
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Partly Cloudy Day Partly Cloudy
74°/59°
Rain drop 4%
Add

Day

74°
Partly Cloudy Day
Rain drop
4%
S 9 mph

Partly cloudy. High 74F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity56%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:49 am
  • Sunset
    Sunset7:06 pm

Night

59°
Partly Cloudy Night
Rain drop
5%
SSE 6 mph

Partly cloudy skies. Low 59F. Winds light and variable.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:35 am
  • Moonset
    Moonset12:54 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Partly Cloudy Day Partly Cloudy
75°/59°
Rain drop 4%
Add

Day

75°
Partly Cloudy Day
Rain drop
4%
SSW 9 mph

Partly cloudy skies. High around 75F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:48 am
  • Sunset
    Sunset7:07 pm

Night

59°
Partly Cloudy Night
Rain drop
6%
SSE 7 mph

A few clouds from time to time. Low 59F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:38 am
  • Moonset
    Moonset1:59 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Partly Cloudy Day Partly Cloudy
78°/59°
Rain drop 2%
Add

Day

78°
Partly Cloudy Day
Rain drop
2%
W 11 mph

Partly cloudy. High 78F. NE winds shifting to WSW at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:47 am
  • Sunset
    Sunset7:07 pm

Night

59°
Mostly Clear Night
Rain drop
2%
SSE 8 mph

Mostly clear skies. Low 59F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:46 pm
  • Moonset
    Moonset2:56 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

Partly Cloudy Day Partly Cloudy
77°/58°
Rain drop 1%
Add

Day

77°
Partly Cloudy Day
Rain drop
1%
SW 11 mph

Partly cloudy skies. High 77F. E winds shifting to WSW at 10 to 15 mph.

  • Humidity
    Humidity46%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise6:45 am
  • Sunset
    Sunset7:08 pm

Night

58°
Partly Cloudy Night
Rain drop
6%
SSE 8 mph

Partly cloudy skies. Low 58F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity62%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:56 pm
  • Moonset
    Moonset3:43 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Partly Cloudy Day Partly Cloudy
76°/59°
Rain drop 4%
Add

Day

76°
Partly Cloudy Day
Rain drop
4%
SSW 10 mph

Sunshine and clouds mixed. High 76F. ESE winds shifting to WSW at 10 to 15 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index8 of 11
  • Sunrise
    Sunrise6:44 am
  • Sunset
    Sunset7:09 pm

Night

59°
Partly Cloudy Night
Rain drop
2%
SSW 8 mph

Partly cloudy. Low 59F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:04 pm
  • Moonset
    Moonset4:23 am
  • Moon Phase - Day 10 Waxing Gibbous
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