Weather forecast April 5, 2023 - P6

Climate and Average Weather Year Round in Costa Mesa California, United States

In Costa Mesa, the summers are short, warm, arid, and clear and the winters are long, cool, and partly cloudy. Over the course of the year, the temperature typically varies from 48°F to 79°F and is rarely below 41°F or above 87°F.

Based on the tourism score, the best time of year to visit Costa Mesa for warm-weather activities is from early June to mid October.

Average Temperature in Costa Mesa 

The warm season lasts for 2.8 months, from July 11 to October 4, with an average daily high temperature above 76°F. The hottest month of the year in Costa Mesa is August, with an average high of 78°F and low of 66°F.

The cool season lasts for 4.2 months, from November 30 to April 5, with an average daily high temperature below 68°F. The coldest month of the year in Costa Mesa is December, with an average low of 48°F and high of 66°F.

Rainfall 

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Costa Mesa experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.0 months, from October 23 to April 23, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Costa Mesa is February, with an average rainfall of 3.0 inches.

The rainless period of the year lasts for 6.0 months, from April 23 to October 23. The month with the least rain in Costa Mesa is July, with an average rainfall of 0.0 inches.

Weather forecast April 5, 2023

Weather 92626

High temperature : 58°F

Low temperature : 51°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the WSW. Visibility 7 mi, humidity 55% . Chance of Rain : 20 % .

Today's Air Quality - Weather 92626 : Moderate

- Air Quality Index : CO : 353.81 ; NH3 : 1.93 ; NO : 1.51 ; NO2 : 36.33 ; O3 : 70.81 ; PM10 : 7.44 ; PM2.5 : 4.4 ; SO2 : 11.92

Weather 92627

High temperature : 58°F

Low temperature : 51°F

- Overcast clouds, Wind speed 8.05 mph, wind out of the W. Visibility 7 mi, humidity 56% . Chance of Rain : 20 % .

Today's Air Quality - Weather 92627 : Moderate

- Air Quality Index : CO : 353.81 ; NH3 : 1.93 ; NO : 1.51 ; NO2 : 36.33 ; O3 : 70.81 ; PM10 : 7.44 ; PM2.5 : 4.4 ; SO2 : 11.92

Weather 92628

High temperature : 58°F

Low temperature : 51°F

- Overcast clouds, Wind speed 8.05 mph, wind out of the W. Visibility 7 mi, humidity 56% . Chance of Rain : 20 % .

Today's Air Quality - Weather 92628 : Moderate

- Air Quality Index : CO : 353.81 ; NH3 : 1.93 ; NO : 1.51 ; NO2 : 36.33 ; O3 : 70.81 ; PM10 : 7.44 ; PM2.5 : 4.4 ; SO2 : 11.92

Weather 92629

High temperature : 57°F

Low temperature : 50°F

- Overcast clouds, Wind speed 15.99 mph, wind out of the NW. Visibility 7 mi, humidity 61% . Chance of Rain : 8 % .

Today's Air Quality - Weather 92629 : Moderate

- Air Quality Index : CO : 280.38 ; NH3 : 0.88 ; NO : 0.36 ; NO2 : 11.82 ; O3 : 85.12 ; PM10 : 5.79 ; PM2.5 : 2.66 ; SO2 : 2.65

Weather 21702

High temperature : 64°F

Low temperature : 59°F

- Overcast clouds, Wind speed 8.01 mph, wind out of the W. Visibility 7 mi, humidity 94% . Chance of Rain : 100 % .

Today's Air Quality - Weather 21702 : Moderate

- Air Quality Index : CO : 230.31 ; NH3 : 0.44 ; NO : 0 ; NO2 : 2.1 ; O3 : 70.1 ; PM10 : 3.19 ; PM2.5 : 2.38 ; SO2 : 0.77

Weather 92637

High temperature : 57°F

Low temperature : 50°F

- Overcast clouds, Wind speed 8.05 mph, wind out of the W. Visibility 7 mi, humidity 58% . Chance of Rain : 20 % .

Today's Air Quality - Weather 92637 : Moderate

- Air Quality Index : CO : 360.49 ; NH3 : 2.19 ; NO : 1.51 ; NO2 : 34.96 ; O3 : 68.67 ; PM10 : 8.76 ; PM2.5 : 5.56 ; SO2 : 10.25

Weather 92646

High temperature : 59°F

Low temperature : 52°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the WSW. Visibility 7 mi, humidity 53% . Chance of Rain : 20 % .

Today's Air Quality - Weather 92646 : Moderate

- Air Quality Index : CO : 353.81 ; NH3 : 1.93 ; NO : 1.51 ; NO2 : 36.33 ; O3 : 70.81 ; PM10 : 7.44 ; PM2.5 : 4.4 ; SO2 : 11.92

Weather 92647

High temperature : 59°F

Low temperature : 52°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the WSW. Visibility 7 mi, humidity 51% . Chance of Rain : 75 % .

Today's Air Quality - Weather 92647 : Moderate

- Air Quality Index : CO : 323.77 ; NH3 : 1.3 ; NO : 0.85 ; NO2 : 22.96 ; O3 : 75.82 ; PM10 : 5.88 ; PM2.5 : 3.25 ; SO2 : 7.63

Weather 93555

High temperature : 56°F

Low temperature : 47°F

- Overcast clouds, Wind speed 5.75 mph, wind out of the NNE. Visibility 7 mi, humidity 28% . Chance of Rain : 20 % .

Today's Air Quality - Weather 93555 : Poor

- Air Quality Index : CO : 216.96 ; NH3 : 1.35 ; NO : 0.02 ; NO2 : 0.64 ; O3 : 101.57 ; PM10 : 4.91 ; PM2.5 : 1.5 ; SO2 : 0.2

Weather 92649

High temperature : 59°F

Low temperature : 51°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the WSW. Visibility 7 mi, humidity 51% . Chance of Rain : 75 % .

Today's Air Quality - Weather 92649 : Moderate

- Air Quality Index : CO : 323.77 ; NH3 : 1.3 ; NO : 0.85 ; NO2 : 22.96 ; O3 : 75.82 ; PM10 : 5.88 ; PM2.5 : 3.25 ; SO2 : 7.63