Phoenix · United States

Phoenix in August: every year compared

In August, Phoenix averages highs of 40.3 °C and lows of 28.6 °C, with 29 mm of precipitation. The warmest August was 2020 (37.3 °C), the coldest 1943 (31.1 °C).

Avg. highAvg. high 40.3 °C

Avg. lowAvg. low 28.6 °C

PrecipitationPrecipitation 29 mm

Rainy daysRainy days 4

Day by day through August

Normal high and low for each day of August in Phoenix.

Normal high and low, day by dayNormal 1991–2020

Every August in Phoenix, ranked

86 months of August since 1940. The last one, 2025, ranks 3 of 86 (+1.8 °C vs normal).

194019832025

2025 · 36.4 °C · +1.8 °C vs normal · rank 3 of 86

Warmest years

1202037.3 °C
2201136.9 °C
3202536.4 °C
4202336.1 °C
5201936.0 °C

Coldest years

1194331.1 °C
2195531.4 °C
3199031.6 °C
4198431.6 °C
5196831.7 °C

All 86 years in a table

Year	Mean temperature	Daytime highs	Night lows	Precipitation	Hot days (30 °C+)	Rainy days
2025	36.4 °C	42.3 °C	29.9 °C	8 mm	31 days	3 days
2024	35.9 °C	41.5 °C	30.4 °C	7 mm	31 days	5 days
2023	36.1 °C	41.8 °C	30.3 °C	16 mm	31 days	7 days
2022	33.9 °C	38.9 °C	28.9 °C	26 mm	31 days	8 days
2021	33.1 °C	38.4 °C	27.8 °C	102 mm	31 days	8 days
2020	37.3 °C	43.2 °C	30.8 °C	10 mm	31 days	3 days
2019	36.0 °C	41.8 °C	29.7 °C	2 mm	31 days	0 days
2018	34.5 °C	40.0 °C	28.8 °C	33 mm	31 days	8 days
2017	34.4 °C	40.0 °C	28.1 °C	32 mm	31 days	6 days
2016	32.8 °C	38.2 °C	27.4 °C	69 mm	31 days	8 days
2015	35.9 °C	41.5 °C	30.1 °C	10 mm	31 days	4 days
2014	32.6 °C	38.0 °C	26.8 °C	55 mm	31 days	5 days
2013	34.4 °C	39.8 °C	28.8 °C	12 mm	31 days	2 days
2012	34.9 °C	40.5 °C	29.4 °C	57 mm	31 days	3 days
2011	36.9 °C	42.8 °C	30.9 °C	1 mm	31 days	0 days
2010	34.8 °C	40.5 °C	29.0 °C	25 mm	31 days	4 days
2009	35.3 °C	41.6 °C	28.1 °C	8 mm	31 days	1 day
2008	34.2 °C	39.5 °C	29.0 °C	36 mm	31 days	6 days
2007	35.8 °C	41.0 °C	30.1 °C	10 mm	31 days	3 days
2006	34.0 °C	39.2 °C	28.7 °C	14 mm	31 days	5 days
2005	33.5 °C	39.1 °C	27.7 °C	23 mm	31 days	4 days
2004	33.9 °C	39.6 °C	27.7 °C	10 mm	31 days	3 days
2003	34.8 °C	40.6 °C	29.1 °C	24 mm	31 days	3 days
2002	34.8 °C	41.0 °C	28.1 °C	5 mm	31 days	2 days
2001	34.5 °C	40.7 °C	28.4 °C	16 mm	31 days	5 days
2000	34.3 °C	39.9 °C	28.8 °C	29 mm	30 days	5 days
1999	33.9 °C	40.1 °C	27.6 °C	9 mm	31 days	2 days
1998	35.1 °C	41.3 °C	28.9 °C	14 mm	31 days	4 days
1997	34.1 °C	39.7 °C	28.4 °C	30 mm	31 days	7 days
1996	34.7 °C	40.7 °C	28.5 °C	29 mm	31 days	6 days
1995	34.6 °C	40.6 °C	28.5 °C	55 mm	31 days	8 days
1994	35.8 °C	41.6 °C	29.8 °C	7 mm	31 days	5 days
1993	33.0 °C	38.9 °C	27.1 °C	88 mm	30 days	9 days
1992	32.2 °C	38.2 °C	26.4 °C	141 mm	30 days	6 days
1991	34.1 °C	40.2 °C	27.8 °C	30 mm	31 days	6 days
1990	31.6 °C	38.2 °C	25.2 °C	48 mm	29 days	7 days
1989	32.9 °C	39.2 °C	26.7 °C	64 mm	31 days	7 days
1988	33.4 °C	39.3 °C	27.6 °C	56 mm	31 days	5 days
1987	33.2 °C	39.3 °C	27.1 °C	30 mm	31 days	7 days
1986	33.8 °C	39.6 °C	28.5 °C	36 mm	31 days	8 days
1985	34.3 °C	40.4 °C	28.0 °C	24 mm	31 days	7 days
1984	31.6 °C	37.0 °C	26.5 °C	99 mm	31 days	12 days
1983	32.5 °C	38.6 °C	26.8 °C	58 mm	30 days	10 days
1982	32.9 °C	38.7 °C	27.5 °C	79 mm	31 days	9 days
1981	34.6 °C	40.5 °C	28.5 °C	29 mm	31 days	4 days
1980	34.0 °C	40.1 °C	27.7 °C	12 mm	31 days	4 days
1979	32.2 °C	38.9 °C	25.1 °C	43 mm	31 days	6 days
1978	32.9 °C	39.5 °C	26.0 °C	22 mm	31 days	6 days
1977	34.1 °C	39.7 °C	28.4 °C	48 mm	31 days	3 days
1976	33.5 °C	40.0 °C	26.2 °C	6 mm	31 days	2 days
1975	34.2 °C	41.0 °C	26.5 °C	3 mm	31 days	1 day
1974	33.5 °C	40.3 °C	26.2 °C	2 mm	31 days	1 day
1973	34.0 °C	40.6 °C	26.8 °C	3 mm	31 days	0 days
1972	33.1 °C	39.2 °C	27.0 °C	15 mm	31 days	3 days
1971	32.0 °C	37.4 °C	26.9 °C	49 mm	30 days	9 days
1970	34.4 °C	40.1 °C	28.8 °C	6 mm	31 days	1 day
1969	35.5 °C	41.6 °C	29.4 °C	5 mm	31 days	0 days
1968	31.7 °C	38.0 °C	25.0 °C	14 mm	31 days	5 days
1967	33.5 °C	39.6 °C	27.1 °C	28 mm	31 days	4 days
1966	34.0 °C	40.2 °C	28.1 °C	13 mm	31 days	4 days
1965	33.8 °C	40.4 °C	26.8 °C	2 mm	31 days	1 day
1964	31.9 °C	37.9 °C	26.3 °C	48 mm	29 days	6 days
1963	32.4 °C	38.0 °C	27.4 °C	27 mm	31 days	6 days
1962	35.0 °C	42.0 °C	27.2 °C	1 mm	31 days	0 days
1961	32.7 °C	38.9 °C	26.4 °C	35 mm	30 days	6 days
1960	33.2 °C	39.4 °C	26.5 °C	51 mm	30 days	9 days
1959	32.2 °C	37.9 °C	27.1 °C	37 mm	31 days	9 days
1958	34.4 °C	40.1 °C	28.6 °C	9 mm	31 days	2 days
1957	33.1 °C	38.8 °C	27.1 °C	5 mm	31 days	2 days
1956	32.4 °C	38.7 °C	24.8 °C	2 mm	31 days	0 days
1955	31.4 °C	36.9 °C	25.9 °C	53 mm	31 days	12 days
1954	32.1 °C	37.9 °C	25.5 °C	48 mm	31 days	4 days
1953	32.9 °C	39.4 °C	25.9 °C	72 mm	31 days	5 days
1952	34.1 °C	39.9 °C	27.8 °C	8 mm	31 days	3 days
1951	32.1 °C	38.2 °C	25.6 °C	157 mm	28 days	7 days
1950	32.9 °C	40.7 °C	24.2 °C	3 mm	31 days	1 day
1949	31.8 °C	39.3 °C	23.7 °C	44 mm	31 days	4 days
1948	33.9 °C	40.1 °C	27.2 °C	24 mm	31 days	5 days
1947	32.8 °C	38.6 °C	26.3 °C	10 mm	31 days	3 days
1946	34.5 °C	40.0 °C	28.0 °C	1 mm	31 days	0 days
1945	33.7 °C	39.0 °C	27.9 °C	19 mm	31 days	4 days
1944	34.7 °C	41.1 °C	27.5 °C	34 mm	31 days	2 days
1943	31.1 °C	36.6 °C	25.7 °C	89 mm	29 days	9 days
1942	32.8 °C	38.4 °C	26.5 °C	57 mm	31 days	4 days
1941	32.5 °C	38.5 °C	25.5 °C	11 mm	31 days	5 days
1940	34.0 °C	39.6 °C	27.7 °C	17 mm	31 days	3 days

August records

Hottest day

47.4 °C

August 7, 2025 estimate

Nearby station: 47.2 °C on August 10, 1933 measured

Coldest night

17.8 °C

August 16, 1949 estimate

Nearby station: 15.6 °C on August 18, 1938 measured

Wettest day

79 mm

August 22, 1992 estimate

The weather on your birthday in Phoenix

Any day since 1940: high, low, rain, snow, and how warm it was compared with the same date in every other year.

Questions & answers

How warm is Phoenix in August?

Highs average 40.3 °C and lows 28.6 °C. A typical August brings 31 hot days (30 °C or more) and 0 frost days.

Does it rain a lot in Phoenix in August?

About 29 mm falls in August, over some 4 days with at least 1 mm. The wettest August was 1951 (157 mm), the driest 1946 (1 mm).

What was the warmest August in Phoenix?

2020, with a mean temperature of 37.3 °C. The coldest was 1943 (31.1 °C). The last one, 2025, ranks 3 of 86.