As of 11:23 PDT

Costa Mesa, CA weather in August

83°

Costa Mesa, Sunday, 9 August, 11:23

Mostly clear. Feels like 88°. High 91°, low 72°.

Pressure29.88 inHg

Wind5 mph SW

Humidity66%

Visibility5.7 mi

Dew point71°

See detailed hourly forecast

In August, Costa Mesa, CA averages a high of 79.1° and a low of 64.6°. About 0.1 inches of precipitation fall over the month (0 wet days). The record high is 92.8° (1983) and the record low 56.3° (2010). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	78.8°	64.4°	2%	86.7° (1972)	57° (2013)
2	78.8°	64.2°	2%	88.7° (1997)	58.5° (2013)
3	78.4°	64.2°	2%	86.5° (1997)	58.3° (1962)
4	78.8°	64.2°	0%	88.2° (1997)	58.1° (1962)
5	79.2°	64.4°	0%	91.9° (1997)	58.6° (1991)
6	79.3°	64.6°	0%	91.2° (1983)	58.8° (1991)
7	79.2°	64.8°	0%	90.1° (1983)	58.3° (1999)
8	79.2°	64.6°	2%	87.6° (1998)	57.9° (2010)
9	79°	64.6°	2%	87.8° (1965)	56.3° (2010)
10	78.8°	64.8°	2%	88° (1994)	59° (2020)
11	79°	64.6°	0%	88.3° (2000)	57.6° (2020)
12	79°	64.4°	2%	90.9° (1991)	57.6° (2010)
13	79.2°	64.6°	0%	92.8° (1983)	58.3° (1974)
14	78.4°	64.6°	0%	87.3° (2015)	57.9° (2010)
15	78.4°	64.6°	2%	88.5° (2015)	59.4° (1972)
16	78.6°	64.8°	3%	88.9° (1992)	59.2° (1975)
17	78.6°	64.8°	2%	90.7° (1992)	58.6° (1975)
18	78.1°	64.6°	2%	88.2° (1992)	57.6° (1975)
19	77.9°	64.4°	2%	89.8° (1986)	58.6° (2009)
20	78.4°	64.4°	2%	88.3° (1986)	59.4° (2009)
21	78.6°	64.2°	3%	89.4° (1969)	58.8° (1975)
22	78.8°	64.2°	0%	90.1° (1969)	57.4° (1968)
23	79.3°	64.2°	0%	89.2° (1968)	57.7° (1968)
24	79.3°	64.8°	0%	89.1° (1985)	59.4° (1960)
25	79.5°	64.8°	0%	92.3° (1985)	58.3° (1978)
26	79.9°	64.9°	0%	92.8° (1981)	58.6° (1990)
27	80.4°	65.1°	0%	92.1° (1981)	56.8° (1973)
28	80.6°	65.3°	0%	91° (1981)	59.2° (1991)
29	81°	65.5°	0%	91.6° (1998)	58.3° (1964)
30	80.1°	65.5°	0%	92.8° (1967)	57.7° (1964)
31	79.7°	64.9°	0%	90.7° (1998)	58.1° (1973)