Weather.com brings you the most accurate monthly weather forecast for Costa Mesa, CA with average/record and high/low temperatures, precipitation and more.

Know what's coming with AccuWeather's extended daily forecasts for Costa Mesa, CA. Up to 90 days of daily highs, lows, and precipitation chances.

30-Day weather forecast in Costa Mesa for November, December 2024 is based on analysis of available statistical data and long-term forecast methods. Jan · Feb.

High Temp. Low Temp. Wind Speed/Dir. Humidity, Comfort Level, Precip. Probability, 24hr. Precip. Total. Sat 16 Nov, Sunny.

In the next 30 days, there will be no rain or snow, the Max Temp is 33°(06-Oct) and the Min Temp is 14°(17-Oct). Sun. Mon. Tue. Wed. Thu. Fri. Sat.

30-day weather forecast in Costa Mesa · 1 Dec. +20°+12° · 2 Dec. +20°+12° · 3 Dec. +19°+12° · 4 Dec. +19°+12° · 5 Dec. +19°+11° · 6 Dec. +19°+12° · 7 Dec. +19°+11° · 8 ...

Get the monthly weather forecast for Costa Mesa, CA, including daily high/low, historical averages, to help you plan ahead.

Weather.com brings you the most accurate monthly weather forecast for Costa Mesa, CA with average/record and high/low temperatures, precipitation and more.

Winter will be warmer and wetter than normal, with above-normal mountain snows. The coldest temperatures will occur in mid-December and mid- to late January.

Long-term forecast, Costa Mesa · Day. Forecast · Thursday 12.09. 25°C 19°C 77°F 66°F Intermittent clouds · Friday 13.09. 25°C 18°C 77°F 64°F Intermittent clouds.