August is one of the warmer months of the year in Prescott Valley, with average highs near 32°C and lows around 18.2°C (mean 25.1°C). It is a relatively wet time of year, averaging 60 mm of rainfall and 46% relative humidity across the period.
August is one of the warmer months of the year in Prescott Valley. Across 45 years of records, the warmest August in Prescott Valley was 2020 — when the month averaged 28.5°C — while the coldest was 1990 at 22.7°C. Typical August days reach 32°C with nights near 18.2°C. The long-term trend is warming, about 0.5°C per decade.
August is a relatively wet time of year in Prescott Valley, averaging 60 mm of rainfall. The wettest August on record was 2014 with 132 mm, while the driest was 2002 at 7 mm.
Relative humidity in Prescott Valley during August averages 46%. The most humid August was 1984 at 59%, and the least humid was 2002 at 27%.
August receives about 6.6 kWh/m²/day of solar energy in Prescott Valley. The sunniest Augusts were 2002, 2009 and 2019, among others at 7.2 kWh/m²/day, and the cloudiest were 1988, 2000 and 2013, among others at 6.
Average wind speed in Prescott Valley during August is 1.6 m/s. The windiest Augusts were 2002 and 2025 at 2 m/s, while the calmest was 2022 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.2°C | 24.9°C | 25.0°C | 25.3°C | 26.7°C | +2.5°C |
| Avg High | 30.8°C | 31.8°C | 32.0°C | 32.2°C | 33.9°C | +3.1°C |
| Avg Low | 17.5°C | 17.9°C | 18.1°C | 18.3°C | 19.5°C | +2°C |
| Avg Rain | 72 mm | 64 mm | 51 mm | 61 mm | 52 mm | -20 mm |
August temperatures in Prescott Valley have risen by about 2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 9.9°C (2010) to a record high of 40.8°C (2020).
Rainfall in August is a relatively wet time of year, averaging 60 mm, with a wettest year of 132 mm.
One of the best times to visit Prescott Valley
August is one of the best times to visit Prescott Valley. Expect days averaging 32°C and nights around 18.2°C (mean 25.1°C) — warmer than Prescott Valley's yearly average — with moderate rainfall (60 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 35.3°C | 27.8°C | 20.3°C | 39.8°C | 16.2°C | 37 mm | 31% | 2 m/s | 7 |
| 2024 | 34.0°C | 26.8°C | 19.7°C | 37.8°C | 15.5°C | 43 mm | 42% | 1.8 m/s | 6.4 |
| 2023 | 33.9°C | 26.8°C | 19.6°C | 37.7°C | 15.9°C | 39 mm | 41% | 1.8 m/s | 6.3 |
| 2022 | 32.0°C | 25.4°C | 18.7°C | 37.1°C | 16.9°C | 96 mm | 56% | 1.3 m/s | 6.1 |
| 2021 | 32.0°C | 25.1°C | 18.2°C | 38.4°C | 14.7°C | 70 mm | 51% | 1.6 m/s | 6.8 |
| 2020 🔥 | 36.2°C | 28.5°C | 20.7°C | 40.8°C | 16.5°C | 26 mm | 30% | 1.9 m/s | 6.8 |
| 2019 | 34.9°C | 27.1°C | 19.3°C | 38.2°C | 15.8°C | 19 mm | 34% | 1.8 m/s | 7.2 |
| 2018 | 32.3°C | 25.4°C | 18.6°C | 37.7°C | 15.8°C | 70 mm | 50% | 1.6 m/s | 6.8 |
| 2017 | 32.1°C | 25.0°C | 17.9°C | 35.5°C | 13.9°C | 48 mm | 45% | 1.5 m/s | 7 |
| 2016 | 30.3°C | 23.8°C | 17.3°C | 36.1°C | 14.2°C | 87 mm | 54% | 1.5 m/s | 6.2 |
| 2015 | 33.0°C | 25.9°C | 18.7°C | 37.5°C | 16.7°C | 46 mm | 44% | 1.7 m/s | 6.6 |
| 2014 🌧️ | 29.8°C | 23.0°C | 16.2°C | 35.1°C | 12.9°C | 132 mm | 54% | 1.6 m/s | 6.5 |
| 2013 | 30.8°C | 24.3°C | 17.8°C | 36.9°C | 13.5°C | 81 mm | 47% | 1.7 m/s | 6 |
| 2012 | 32.5°C | 25.7°C | 18.9°C | 38.2°C | 16.1°C | 69 mm | 49% | 1.5 m/s | 6.5 |
| 2011 | 35.0°C | 27.7°C | 20.3°C | 38.9°C | 17.6°C | 17 mm | 35% | 1.7 m/s | 6.9 |
| 2010 | 31.2°C | 24.6°C | 18.0°C | 36.7°C | 9.9°C | 44 mm | 48% | 1.8 m/s | 6.6 |
| 2009 | 33.5°C | 25.6°C | 17.7°C | 37.8°C | 11.8°C | 24 mm | 30% | 1.8 m/s | 7.2 |
| 2008 | 31.6°C | 25.0°C | 18.4°C | 37.4°C | 15.9°C | 75 mm | 50% | 1.5 m/s | 6.6 |
| 2007 | 32.3°C | 25.6°C | 18.9°C | 36.4°C | 15.1°C | 33 mm | 50% | 1.5 m/s | 6.6 |
| 2006 | 30.5°C | 24.1°C | 17.7°C | 34.0°C | 12.6°C | 58 mm | 51% | 1.5 m/s | 6.5 |
| 2005 | 30.2°C | 23.7°C | 17.3°C | 36.0°C | 12.9°C | 70 mm | 54% | 1.5 m/s | 6.4 |
| 2004 | 31.6°C | 24.4°C | 17.3°C | 37.1°C | 12.7°C | 43 mm | 41% | 1.7 m/s | 6.5 |
| 2003 | 32.0°C | 25.4°C | 18.9°C | 38.6°C | 16.2°C | 67 mm | 50% | 1.5 m/s | 6.4 |
| 2002 | 34.0°C | 26.1°C | 18.3°C | 38.5°C | 14.3°C | 7 mm | 27% | 2 m/s | 7.2 |
| 2001 | 32.3°C | 25.3°C | 18.3°C | 37.7°C | 15.3°C | 56 mm | 45% | 1.5 m/s | 6.6 |
| 2000 | 31.8°C | 24.9°C | 17.9°C | 37.8°C | 10.9°C | 79 mm | 49% | 1.5 m/s | 6 |
| 1999 | 31.4°C | 24.2°C | 16.9°C | 35.7°C | 12.1°C | 49 mm | 45% | 1.8 m/s | 6.5 |
| 1998 | 33.0°C | 25.9°C | 18.7°C | 37.2°C | 15.4°C | 68 mm | 48% | 1.5 m/s | 6.6 |
| 1997 | 31.7°C | 25.1°C | 18.5°C | 36.5°C | 14.7°C | 66 mm | 50% | 1.6 m/s | 6.3 |
| 1996 | 33.3°C | 25.9°C | 18.4°C | 37.6°C | 14.0°C | 37 mm | 42% | 1.7 m/s | 6.8 |
| 1995 | 33.5°C | 26.4°C | 19.4°C | 38.8°C | 15.3°C | 64 mm | 43% | 1.6 m/s | 6.8 |
| 1994 | 33.4°C | 26.4°C | 19.3°C | 39.2°C | 17.7°C | 46 mm | 44% | 1.6 m/s | 6.5 |
| 1993 | 30.7°C | 23.9°C | 17.0°C | 37.5°C | 12.3°C | 74 mm | 46% | 1.8 m/s | 6.5 |
| 1992 | 30.4°C | 24.0°C | 17.5°C | 36.4°C | 11.3°C | 129 mm | 54% | 1.5 m/s | 6.3 |
| 1991 | 31.1°C | 24.3°C | 17.4°C | 37.0°C | 14.6°C | 50 mm | 45% | 1.7 m/s | 6.7 |
| 1990 ❄️ | 30.0°C | 22.7°C | 15.4°C | 35.7°C | 10.5°C | 58 mm | 48% | 1.8 m/s | 6.9 |
| 1989 | 30.5°C | 23.4°C | 16.2°C | 35.9°C | 11.0°C | 45 mm | 45% | 1.9 m/s | 7.2 |
| 1988 | 30.5°C | 23.9°C | 17.3°C | 35.2°C | 14.6°C | 131 mm | 54% | 1.5 m/s | 6 |
| 1987 | 30.1°C | 23.5°C | 16.9°C | 34.7°C | 11.3°C | 51 mm | 48% | 1.5 m/s | 6.5 |
| 1986 | 31.1°C | 24.9°C | 18.8°C | 36.1°C | 15.6°C | 78 mm | 52% | 1.4 m/s | 6 |
| 1985 | 32.9°C | 25.5°C | 18.1°C | 38.5°C | 15.1°C | 18 mm | 38% | 1.6 m/s | 7 |
| 1984 | 29.6°C | 23.4°C | 17.2°C | 35.9°C | 13.4°C | 99 mm | 59% | 1.4 m/s | 6 |
| 1983 | 29.6°C | 23.2°C | 16.8°C | 35.0°C | 11.5°C | 100 mm | 57% | 1.6 m/s | — |
| 1982 | 29.9°C | 24.1°C | 18.2°C | 35.0°C | 15.3°C | 74 mm | 55% | 1.4 m/s | — |
| 1981 | 32.8°C | 25.6°C | 18.3°C | 37.3°C | 14.4°C | 48 mm | 43% | 1.6 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 32°C with lows near 18.2°C (mean 25.1°C), based on 45 years of NASA POWER data.
August averages 60 mm of rainfall in Prescott Valley, a relatively wet time of year. The wettest on record was 132 mm in 2014.
The hottest August reached 40.8°C in 2020. The coldest dipped to 9.9°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2°C. Daytime highs moved from 31°C to 33.4°C and overnight lows from 17.7°C to 19.3°C over the same span.
August is one of the warmer months of the year in Prescott Valley and a relatively wet time of year, so plan for around 32°C daytime highs and 18.2°C at night.
Not quite — August is the 11th coolest month in Prescott Valley, averaging 25.1°C.
For August in Prescott Valley, pack light, breathable clothing and sun protection, with typical highs of 32°C and lows of 18.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 46% — relatively dry.
Average wind speed in August is 1.6 m/s. The windiest August on record averaged 2 m/s (2002).
The wettest August on record was 2014 with 132 mm. On average, August sees 60 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Prescott Valley behaves each August, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for August specifically, along with year-by-year records and how the month has changed over the decades.
