August weather in Fountain Hills, AZ
The average temperature in Fountain Hills in August is 90.9°F (79.8°F–101.9°F). Average precipitation: 1.33 inches.
August is a summer month in Fountain Hills, and is warmer than the annual average of 72.1°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 13h 15m. For travel, August is hot.
Avg High
101.9°F
Avg Low
79.8°F
Precipitation
1.33 in
Daylight
13h 15m
August records in Fountain Hills
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 117.0°F (1986) | 70.0°F (1985) | 0.54 in (2005) |
| August 2 | 118.0°F (1993) | 70.0°F (1985) | 0.05 in (1988) |
| August 3 | 113.0°F (1993) | 70.0°F (1985) | 1.34 in (2005) |
| August 4 | 116.1°F (1995) | 70.0°F (1985) | 0.31 in (2016) |
| August 5 | 117.0°F (1995) | 70.0°F (1985) | 1.06 in (1987) |
| August 6 | 116.1°F (1994) | 71.1°F (2002) | 0.34 in (1993) |
| August 7 | 118.0°F (1995) | 68.0°F (1991) | 0.92 in (1992) |
| August 8 | 116.1°F (1995) | 66.9°F (2009) | 0.11 in (1986) |
| August 9 | 115.0°F (1995) | 69.1°F (2018) | 0.86 in (2022) |
| August 10 | 117.0°F (1995) | 69.1°F (2009) | 0.61 in (1993) |
| August 11 | 115.0°F (1995) | 68.0°F (1981) | 0.49 in (1980) |
| August 12 | 116.1°F (1996) | 62.1°F (1991) | 2.15 in (2021) |
| August 13 | 118.0°F (1996) | 68.0°F (1981) | 0.60 in (2022) |
| August 14 | 115.0°F (1983) | 68.0°F (1980) | 2.00 in (2021) |
| August 15 | 114.1°F (1988) | 64.9°F (1985) | 1.25 in (1990) |
| August 16 | 114.1°F (1992) | 66.9°F (1990) | 1.00 in (1998) |
| August 17 | 114.1°F (1992) | 69.1°F (1990) | 0.52 in (2021) |
| August 18 | 111.9°F (1992) | 66.0°F (1980) | 0.98 in (2024) |
| August 19 | 111.0°F (1988) | 68.0°F (1980) | 0.75 in (2011) |
| August 20 | 115.0°F (1986) | 68.0°F (1998) | 1.05 in (2014) |
| August 21 | 115.0°F (1982) | 64.9°F (1990) | 0.80 in (1995) |
| August 22 | 113.0°F (1986) | 57.9°F (2014) | 0.79 in (1992) |
| August 23 | 115.0°F (1982) | 64.0°F (1992) | 1.33 in (1992) |
| August 24 | 114.1°F (1985) | 64.9°F (1992) | 0.34 in (1992) |
| August 25 | 115.0°F (1985) | 64.9°F (1989) | 1.23 in (2008) |
| August 26 | 111.9°F (1985) | 66.0°F (1989) | 0.13 in (2015) |
| August 27 | 111.9°F (1985) | 66.9°F (1989) | 0.88 in (1988) |
| August 28 | 111.9°F (1983) | 68.0°F (1993) | 1.10 in (2008) |
| August 29 | 111.9°F (1985) | 68.0°F (1988) | 1.52 in (1988) |
| August 30 | 115.0°F (1995) | 66.0°F (1986) | 0.94 in (1986) |
| August 31 | 114.1°F (1984) | 66.0°F (2000) | 0.10 in (1997) |