As of 00:07 PDT

Tustin, CA weather in August

73°

Tustin, Sunday, 9 August, 00:07

Clear. Feels like 74°. High 97°, low 70°.

Pressure29.85 inHg

Wind1 mph S

Humidity80%

Visibility6.2 mi

Dew point66°

See detailed hourly forecast

In August, Tustin, CA averages a high of 82.5° and a low of 65.4°. About 0.1 inches of precipitation fall over the month (0 wet days). The record high is 102° (2020) and the record low 55° (2020). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	82.4°	65.1°	0%	90.5° (2017)	58.1° (2013)
2	82.4°	64.9°	3%	91.8° (1997)	58.3° (2025)
3	82.2°	65.1°	2%	90.9° (2024)	59.4° (1962)
4	82.2°	65.1°	0%	91.2° (1997)	58.3° (1962)
5	82.9°	65.1°	0%	95.4° (1997)	59.5° (1991)
6	82.8°	65.5°	0%	94.6° (1983)	59.5° (1991)
7	82.6°	65.5°	0%	95.9° (2025)	58.1° (2023)
8	82.6°	65.1°	0%	94.3° (2018)	58.3° (2020)
9	82.4°	65.3°	5%	98.1° (2018)	57.2° (2010)
10	82°	65.5°	2%	91.4° (2018)	57.6° (2020)
11	82.4°	65.5°	0%	91.8° (2000)	55° (2020)
12	82.4°	65.1°	2%	92.5° (1991)	57.6° (2020)
13	82.6°	65.1°	0%	95.5° (1983)	58.6° (2019)
14	81.9°	65.3°	0%	94.5° (2020)	58.5° (2019)
15	81.7°	65.3°	2%	93.2° (2020)	59.2° (2019)
16	82°	65.5°	3%	92.1° (1992)	59.9° (2019)
17	81.7°	65.5°	3%	94.3° (1992)	59.2° (1975)
18	81.3°	65.3°	5%	102° (2020)	58.3° (1975)
19	81°	65.1°	2%	92.5° (1986)	57.9° (2024)
20	81.5°	65.1°	2%	95.4° (2024)	59° (2019)
21	81.7°	65.1°	5%	93.4° (2025)	59.9° (1975)
22	82°	64.9°	0%	94.8° (2025)	57.6° (1968)
23	82.4°	64.9°	0%	92.1° (1968)	58.3° (1968)
24	82.4°	65.3°	0%	92.5° (1985)	59.2° (2021)
25	82.8°	65.3°	0%	95.9° (1985)	58.3° (2023)
26	83.3°	65.7°	2%	95.9° (1981)	58.8° (1990)
27	84°	65.8°	0%	95.7° (1981)	57.6° (1973)
28	84.2°	66°	0%	94.6° (1981)	60.3° (1991)
29	84.6°	66.2°	2%	95.2° (1998)	58.1° (2024)
30	83.7°	66.2°	0%	95.9° (1967)	57° (2024)
31	83.1°	65.5°	0%	101.3° (2017)	58.8° (2020)