Monday's Hourly Weather Forecast - Costa Mesa, CA

Time
12 AM
Weather Condition:
Temperature
63°
Chance of precipitation
0%
Wind
5mph
Weather Condition:Partly Cloudy
Humidity
81%
Feels like
63°
Dew Point
57°
Time
1 AM
Weather Condition:
Temperature
63°
Chance of precipitation
0%
Wind
5mph
Weather Condition:Partly Cloudy
Humidity
81%
Feels like
63°
Dew Point
57°
Time
2 AM
Weather Condition:
Temperature
62°
Chance of precipitation
0%
Wind
5mph
Weather Condition:Partly Cloudy
Humidity
81%
Feels like
62°
Dew Point
56°
Time
3 AM
Weather Condition:
Temperature
62°
Chance of precipitation
0%
Wind
5mph
Weather Condition:Partly Cloudy
Humidity
81%
Feels like
62°
Dew Point
56°

Today's Convective Outlook

Thunderstorms to Rumble Across the Plains, Atlantic Coast

There are a pair of areas to watch in terms of severe thunderstorms today

Today's Weather Outlook

Today's Weather Outlook

Temperature Outlook for June through August 2026

Summer Outlook: Developing El Niño Set to Impact Drought, Wildfires Nationwide

Drought Monitor for June 18, 2026

Thirsty Midwest, Southern Plains See Drought Relief

Severe Weather Pet Safety Tips

Edmund, Okla., June 15, 2010 -- A car lies in a ditch where flood waters forced it off Hefner Rd in Edmund, OK after the area experienced rain fall of almost 10 inches in six hours. (Patsy Lynch/FEMA Photo Library)

Flooding: Turn Around, Don't Drown!

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Cold & Flu

Fire Updates

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide