August is one of the warmer months of the year in Apple Valley, with average highs near 35.6°C and lows around 18.8°C (mean 27.2°C). It is about average for rainfall, averaging 14 mm of rainfall and 29% relative humidity across the period.
August is one of the warmer months of the year in Apple Valley. Across 45 years of records, the warmest August in Apple Valley was 2020 — when the month averaged 29.3°C — while the coldest was 1989 at 24.6°C. Typical August days reach 35.6°C with nights near 18.8°C. The long-term trend is warming, about 0.5°C per decade.
August is about average for rainfall in Apple Valley, averaging 14 mm of rainfall. The wettest August on record was 1983 with 93 mm, while the driest were 1985 and 2002 at 0 mm.
Relative humidity in Apple Valley during August averages 29%. The most humid August was 1983 at 46%, and the least humid was 2019 at 18%.
August receives about 7.2 kWh/m²/day of solar energy in Apple Valley. The sunniest August was 2006 at 7.8 kWh/m²/day, and the cloudiest was 1984 at 6.2.
Average wind speed in Apple Valley during August is 2.5 m/s. The windiest Augusts were 1985, 2002 and 2018 at 2.9 m/s, while the calmest were 1984 and 2012 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.1°C | 26.9°C | 27.3°C | 27.6°C | 28.4°C | +2.3°C |
| Avg High | 34.4°C | 35.5°C | 35.8°C | 36.0°C | 36.5°C | +2.1°C |
| Avg Low | 17.8°C | 18.3°C | 18.9°C | 19.2°C | 20.3°C | +2.5°C |
| Avg Rain | 26 mm | 10 mm | 12 mm | 7 mm | 17 mm | -9 mm |
August temperatures in Apple Valley have risen by about 2.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 8.6°C (1990) to a record high of 42.5°C (2020).
Rainfall in August is about average for rainfall, averaging 14 mm, with a wettest year of 93 mm.
A good time to visit Apple Valley
August is a good time to visit Apple Valley, with days averaging 35.6°C and nights around 18.8°C (mean 27.2°C, warmer than Apple Valley's yearly average) and low rainfall. June and September are marginally more temperate, but August still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 36.8°C | 28.2°C | 19.7°C | 40.8°C | 15.5°C | 11 mm | 25% | 2.5 m/s | 7.2 |
| 2024 | 36.9°C | 28.6°C | 20.2°C | 41.6°C | 11.3°C | 2 mm | 23% | 2.7 m/s | 7.4 |
| 2023 | 35.0°C | 27.3°C | 19.6°C | 40.2°C | 14.1°C | 70 mm | 35% | 2.6 m/s | 6.9 |
| 2022 | 35.5°C | 28.6°C | 21.7°C | 40.1°C | 18.5°C | 15 mm | 33% | 2 m/s | 7 |
| 2021 | 36.8°C | 28.4°C | 20.1°C | 41.7°C | 14.5°C | 2 mm | 28% | 2.6 m/s | 7.2 |
| 2020 🔥 | 38.0°C | 29.3°C | 20.6°C | 42.5°C | 13.7°C | 3 mm | 25% | 2.7 m/s | 7.2 |
| 2019 | 37.3°C | 28.4°C | 19.5°C | 40.0°C | 14.9°C | 0 mm | 18% | 2.6 m/s | 7.7 |
| 2018 | 36.5°C | 28.0°C | 19.6°C | 41.4°C | 14.8°C | 3 mm | 28% | 2.9 m/s | 7.4 |
| 2017 | 35.7°C | 28.1°C | 20.5°C | 39.6°C | 12.9°C | 8 mm | 30% | 2.4 m/s | 7 |
| 2016 | 36.0°C | 27.5°C | 19.1°C | 39.7°C | 14.8°C | 3 mm | 23% | 2.5 m/s | 7.6 |
| 2015 | 36.6°C | 28.0°C | 19.3°C | 40.3°C | 12.9°C | 1 mm | 26% | 2.7 m/s | 7.4 |
| 2014 | 33.8°C | 25.8°C | 17.7°C | 38.1°C | 14.2°C | 16 mm | 32% | 2.4 m/s | 7.3 |
| 2013 | 34.7°C | 26.6°C | 18.5°C | 39.0°C | 12.8°C | 17 mm | 29% | 2.5 m/s | 7.3 |
| 2012 | 36.2°C | 28.8°C | 21.4°C | 40.8°C | 15.3°C | 16 mm | 31% | 1.9 m/s | 6.9 |
| 2011 | 37.3°C | 28.1°C | 18.8°C | 40.1°C | 14.7°C | 5 mm | 21% | 2.5 m/s | 7.6 |
| 2010 | 35.4°C | 26.4°C | 17.5°C | 39.2°C | 9.0°C | 5 mm | 24% | 2.8 m/s | 7.6 |
| 2009 | 35.5°C | 26.9°C | 18.3°C | 39.3°C | 12.0°C | 5 mm | 23% | 2.4 m/s | 7.4 |
| 2008 | 36.4°C | 27.9°C | 19.4°C | 39.6°C | 14.7°C | 9 mm | 28% | 2.6 m/s | 7.3 |
| 2007 | 36.7°C | 28.3°C | 20.0°C | 39.0°C | 13.1°C | 7 mm | 27% | 2.5 m/s | 7.2 |
| 2006 | 35.4°C | 26.7°C | 17.9°C | 38.4°C | 13.7°C | 3 mm | 25% | 2.6 m/s | 7.8 |
| 2005 | 34.4°C | 26.7°C | 19.1°C | 39.0°C | 15.0°C | 21 mm | 35% | 2.1 m/s | 7.3 |
| 2004 | 35.4°C | 26.8°C | 18.3°C | 40.5°C | 12.5°C | 18 mm | 30% | 2.5 m/s | 7.5 |
| 2003 | 35.5°C | 27.6°C | 19.8°C | 39.8°C | 15.8°C | 27 mm | 31% | 2.3 m/s | 7.2 |
| 2002 | 36.3°C | 26.9°C | 17.6°C | 41.1°C | 12.4°C | 0 mm | 23% | 2.9 m/s | 7.5 |
| 2001 | 37.0°C | 28.3°C | 19.5°C | 40.5°C | 13.2°C | 4 mm | 25% | 2.5 m/s | 7.6 |
| 2000 | 35.2°C | 27.1°C | 19.0°C | 40.1°C | 11.2°C | 27 mm | 32% | 2.7 m/s | 7.2 |
| 1999 | 35.0°C | 26.1°C | 17.1°C | 38.2°C | 10.3°C | 3 mm | 26% | 2.5 m/s | 7.5 |
| 1998 | 36.8°C | 28.6°C | 20.4°C | 41.4°C | 13.3°C | 16 mm | 30% | 2.3 m/s | 7.2 |
| 1997 | 36.0°C | 27.2°C | 18.3°C | 40.6°C | 11.8°C | 10 mm | 31% | 2.8 m/s | 7.5 |
| 1996 | 36.8°C | 28.0°C | 19.2°C | 39.6°C | 12.9°C | 9 mm | 28% | 2.7 m/s | 7.5 |
| 1995 | 36.2°C | 27.8°C | 19.5°C | 40.5°C | 14.4°C | 5 mm | 26% | 2.8 m/s | 6.7 |
| 1994 | 36.6°C | 27.9°C | 19.2°C | 40.8°C | 14.5°C | 17 mm | 28% | 2.7 m/s | 6.7 |
| 1993 | 34.2°C | 25.5°C | 16.7°C | 40.4°C | 10.9°C | 7 mm | 32% | 2.6 m/s | 7.1 |
| 1992 | 34.9°C | 26.9°C | 19.0°C | 39.2°C | 10.6°C | 15 mm | 34% | 2.5 m/s | 7.1 |
| 1991 | 33.9°C | 25.1°C | 16.4°C | 37.7°C | 10.9°C | 8 mm | 33% | 2.6 m/s | 7.4 |
| 1990 | 34.2°C | 25.5°C | 16.7°C | 38.9°C | 8.6°C | 9 mm | 33% | 2.5 m/s | 6.9 |
| 1989 ❄️ | 33.6°C | 24.6°C | 15.7°C | 37.7°C | 11.2°C | 11 mm | 32% | 2.8 m/s | 7.5 |
| 1988 | 33.8°C | 25.8°C | 17.7°C | 38.0°C | 12.5°C | 36 mm | 36% | 2.2 m/s | 6.7 |
| 1987 | 34.7°C | 26.2°C | 17.8°C | 38.2°C | 9.2°C | 5 mm | 30% | 2.7 m/s | 6.8 |
| 1986 | 36.2°C | 27.9°C | 19.6°C | 39.3°C | 14.2°C | 17 mm | 26% | 2.3 m/s | 7.3 |
| 1985 | 35.8°C | 26.3°C | 16.7°C | 40.1°C | 12.8°C | 0 mm | 22% | 2.9 m/s | 7 |
| 1984 | 32.9°C | 25.4°C | 17.8°C | 37.8°C | 15.0°C | 41 mm | 45% | 1.9 m/s | 6.2 |
| 1983 🌧️ | 31.8°C | 24.8°C | 17.8°C | 39.0°C | 9.8°C | 93 mm | 46% | 2.1 m/s | — |
| 1982 | 33.9°C | 26.0°C | 18.1°C | 38.2°C | 12.4°C | 23 mm | 30% | 2.3 m/s | — |
| 1981 | 36.7°C | 27.8°C | 18.9°C | 40.3°C | 13.1°C | 8 mm | 22% | 2.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 35.6°C with lows near 18.8°C (mean 27.2°C), based on 45 years of NASA POWER data.
August averages 14 mm of rainfall in Apple Valley, about average for rainfall. The wettest on record was 93 mm in 1983.
The hottest August reached 42.5°C in 2020. The coldest dipped to 8.6°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.1°C. Daytime highs moved from 34.2°C to 36.2°C and overnight lows from 17.9°C to 20.3°C over the same span.
August is one of the warmer months of the year in Apple Valley and about average for rainfall, so plan for around 35.6°C daytime highs and 18.8°C at night.
Not quite — August is the 11th coolest month in Apple Valley, averaging 27.2°C.
For August in Apple Valley, pack light, breathable clothing and sun protection, with typical highs of 35.6°C and lows of 18.8°C.
Relative humidity in August averages 29% — relatively dry.
Average wind speed in August is 2.5 m/s. The windiest August on record averaged 2.9 m/s (1985).
The wettest August on record was 1983 with 93 mm. On average, August sees 14 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 Apple 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.
