August is one of the warmer months of the year in Redding, with average highs near 36.1°C and lows around 18.1°C (mean 27.1°C). It is one of the drier months, averaging 6 mm of rainfall and 26% relative humidity across the period.
August is one of the warmer months of the year in Redding. Across 45 years of records, the warmest August in Redding was 2017 — when the month averaged 30.5°C — while the coldest was 1999 at 24.6°C. Typical August days reach 36.1°C with nights near 18.1°C. The long-term trend is warming, about 0.7°C per decade.
August is one of the drier months in Redding, averaging 6 mm of rainfall. The wettest August on record was 1983 with 36 mm, while the driest were 2012, 2018 and 2021, among others at 0 mm.
Relative humidity in Redding during August averages 26%. The most humid August was 1999 at 36%, and the least humid was 2016 at 18%.
August receives about 7.1 kWh/m²/day of solar energy in Redding. The sunniest Augusts were 1998 and 2011 at 7.7 kWh/m²/day, and the cloudiest was 2021 at 6.1.
Average wind speed in Redding during August is 0.8 m/s. The windiest Augusts were 2008, 2022 and 2024, among others at 0.9 m/s, while the calmest was 2020 at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.2°C | 26.2°C | 27.1°C | 27.8°C | 28.8°C | +2.6°C |
| Avg High | 35.4°C | 35.3°C | 36.2°C | 36.7°C | 37.5°C | +2.1°C |
| Avg Low | 17.1°C | 17.1°C | 18.1°C | 18.9°C | 20.1°C | +3°C |
| Avg Rain | 8 mm | 8 mm | 5 mm | 3 mm | 7 mm | -1 mm |
August temperatures in Redding have risen by about 2.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 9.2°C (1999) to a record high of 46°C (1981).
Rainfall in August is one of the drier months, averaging 6 mm, with a wettest year of 36 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 0.8°C per decade, narrowing the gap between day and night.
One of the best times to visit Redding
August is one of the best times to visit Redding. Expect days averaging 36.1°C and nights around 18.1°C (mean 27.1°C) — warmer than Redding's yearly average — with low rainfall (6 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 | 38.1°C | 29.1°C | 20.1°C | 43.2°C | 15.8°C | 8 mm | 24% | 0.8 m/s | 7.1 |
| 2024 | 36.1°C | 27.4°C | 18.8°C | 42.2°C | 11.1°C | 15 mm | 27% | 0.9 m/s | 6.9 |
| 2023 | 37.1°C | 28.7°C | 20.3°C | 43.7°C | 15.2°C | 15 mm | 27% | 0.8 m/s | 6.7 |
| 2022 | 38.5°C | 29.8°C | 21.1°C | 42.8°C | 16.4°C | 1 mm | 21% | 0.9 m/s | 7.2 |
| 2021 | 37.3°C | 28.5°C | 19.8°C | 44.4°C | 15.2°C | 0 mm | 20% | 0.8 m/s | 6.1 |
| 2020 | 38.1°C | 29.1°C | 20.2°C | 42.4°C | 16.8°C | 2 mm | 24% | 0.7 m/s | 6.6 |
| 2019 | 37.1°C | 28.3°C | 19.6°C | 42.2°C | 12.9°C | 12 mm | 25% | 0.8 m/s | 7.2 |
| 2018 | 36.1°C | 27.3°C | 18.5°C | 41.5°C | 13.3°C | 0 mm | 20% | 0.8 m/s | 6.9 |
| 2017 🔥 | 39.6°C | 30.5°C | 21.4°C | 45.8°C | 17.1°C | 3 mm | 20% | 0.8 m/s | 6.9 |
| 2016 | 38.2°C | 28.9°C | 19.6°C | 43.1°C | 15.4°C | 1 mm | 18% | 0.8 m/s | 7.5 |
| 2015 | 35.7°C | 27.3°C | 19.0°C | 40.7°C | 14.8°C | 2 mm | 25% | 0.8 m/s | 6.9 |
| 2014 | 35.8°C | 27.2°C | 18.7°C | 41.4°C | 15.4°C | 6 mm | 26% | 0.8 m/s | 6.9 |
| 2013 | 35.0°C | 26.6°C | 18.1°C | 43.1°C | 14.2°C | 3 mm | 29% | 0.8 m/s | 7 |
| 2012 | 38.0°C | 28.5°C | 19.0°C | 43.4°C | 13.4°C | 0 mm | 20% | 0.8 m/s | 7.3 |
| 2011 | 36.2°C | 27.0°C | 17.8°C | 38.6°C | 15.0°C | 1 mm | 24% | 0.8 m/s | 7.7 |
| 2010 | 35.0°C | 26.2°C | 17.4°C | 42.4°C | 9.8°C | 5 mm | 27% | 0.8 m/s | 7.3 |
| 2009 | 35.9°C | 26.8°C | 17.7°C | 41.8°C | 12.7°C | 4 mm | 26% | 0.8 m/s | 7.2 |
| 2008 | 36.9°C | 27.7°C | 18.6°C | 43.5°C | 13.5°C | 2 mm | 27% | 0.9 m/s | 7.3 |
| 2007 | 36.0°C | 26.8°C | 17.6°C | 41.8°C | 13.4°C | 5 mm | 27% | 0.9 m/s | 7.5 |
| 2006 | 35.8°C | 26.8°C | 17.7°C | 38.7°C | 14.0°C | 2 mm | 24% | 0.8 m/s | 7.5 |
| 2005 | 37.6°C | 28.4°C | 19.3°C | 42.1°C | 14.2°C | 0 mm | 24% | 0.8 m/s | 7.6 |
| 2004 | 36.1°C | 27.2°C | 18.2°C | 41.8°C | 13.2°C | 3 mm | 30% | 0.9 m/s | 7.2 |
| 2003 | 34.5°C | 26.0°C | 17.4°C | 41.1°C | 13.3°C | 24 mm | 35% | 0.9 m/s | 7 |
| 2002 | 36.7°C | 27.5°C | 18.3°C | 44.4°C | 13.0°C | 0 mm | 23% | 0.8 m/s | 7.4 |
| 2001 | 36.5°C | 27.4°C | 18.4°C | 42.3°C | 15.1°C | 1 mm | 26% | 0.9 m/s | 7.4 |
| 2000 | 35.7°C | 26.6°C | 17.5°C | 43.6°C | 14.4°C | 14 mm | 28% | 0.8 m/s | 7.4 |
| 1999 ❄️ | 33.0°C | 24.6°C | 16.1°C | 39.9°C | 9.2°C | 21 mm | 36% | 0.8 m/s | 6.7 |
| 1998 | 37.7°C | 27.9°C | 18.1°C | 44.0°C | 14.0°C | 1 mm | 25% | 0.8 m/s | 7.7 |
| 1997 | 34.2°C | 25.8°C | 17.4°C | 43.2°C | 13.6°C | 20 mm | 34% | 0.9 m/s | 7.2 |
| 1996 | 37.8°C | 27.9°C | 18.0°C | 42.7°C | 13.3°C | 12 mm | 24% | 0.8 m/s | 7.4 |
| 1995 | 35.8°C | 25.9°C | 15.9°C | 41.8°C | 10.8°C | 1 mm | 25% | 0.8 m/s | 7.2 |
| 1994 | 35.8°C | 26.1°C | 16.4°C | 39.9°C | 13.1°C | 0 mm | 22% | 0.8 m/s | 7.4 |
| 1993 | 34.2°C | 25.1°C | 16.0°C | 43.7°C | 11.8°C | 12 mm | 32% | 0.9 m/s | 7.1 |
| 1992 | 37.0°C | 27.8°C | 18.6°C | 41.8°C | 11.2°C | 1 mm | 24% | 0.8 m/s | 7.2 |
| 1991 | 33.6°C | 25.2°C | 16.8°C | 38.2°C | 12.3°C | 2 mm | 30% | 0.9 m/s | 7 |
| 1990 | 34.2°C | 25.8°C | 17.3°C | 45.5°C | 11.2°C | 15 mm | 33% | 0.8 m/s | 6.6 |
| 1989 | 33.6°C | 24.7°C | 15.7°C | 38.8°C | 9.9°C | 6 mm | 29% | 0.9 m/s | 7.1 |
| 1988 | 37.1°C | 27.5°C | 17.9°C | 42.5°C | 12.8°C | 2 mm | 22% | 0.8 m/s | 7 |
| 1987 | 36.5°C | 27.1°C | 17.6°C | 41.0°C | 14.0°C | 0 mm | 21% | 0.8 m/s | 7.3 |
| 1986 | 36.4°C | 27.4°C | 18.4°C | 40.4°C | 13.7°C | 0 mm | 19% | 0.8 m/s | 7.1 |
| 1985 | 34.1°C | 24.9°C | 15.7°C | 38.8°C | 11.9°C | 5 mm | 24% | 0.8 m/s | 7 |
| 1984 | 34.9°C | 25.8°C | 16.7°C | 41.2°C | 10.7°C | 18 mm | 26% | 0.9 m/s | 6.8 |
| 1983 🌧️ | 33.2°C | 25.3°C | 17.4°C | 41.1°C | 11.9°C | 36 mm | 36% | 0.9 m/s | — |
| 1982 | 34.9°C | 25.8°C | 16.7°C | 41.3°C | 11.6°C | 3 mm | 28% | 0.8 m/s | — |
| 1981 | 37.5°C | 27.4°C | 17.4°C | 46.0°C | 11.6°C | 0 mm | 22% | 0.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 36.1°C with lows near 18.1°C (mean 27.1°C), based on 45 years of NASA POWER data.
August averages 6 mm of rainfall in Redding, one of the drier months. The wettest on record was 36 mm in 1983.
The hottest August reached 46°C in 1981. The coldest dipped to 9.2°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.9°C. Daytime highs moved from 34.9°C to 37.4°C and overnight lows from 16.8°C to 20°C over the same span.
August is one of the warmer months of the year in Redding and one of the drier months, so plan for around 36.1°C daytime highs and 18.1°C at night.
Not quite — August is the 11th coolest month in Redding, averaging 27.1°C.
For August in Redding, pack light, breathable clothing and sun protection, with typical highs of 36.1°C and lows of 18.1°C.
Relative humidity in August averages 26% — relatively dry.
Average wind speed in August is 0.8 m/s. The windiest August on record averaged 0.9 m/s (1983).
The wettest August on record was 1983 with 36 mm. On average, August sees 6 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 Redding 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.
