August is one of the warmer months of the year in Twin Falls, with average highs near 32.1°C and lows around 15.7°C (mean 23.9°C). It is one of the drier months, averaging 14 mm of rainfall and 29% relative humidity across the period.
August is one of the warmer months of the year in Twin Falls. Across 45 years of records, the warmest August in Twin Falls was 2022 — when the month averaged 26.6°C — while the coldest was 1993 at 20.2°C. Typical August days reach 32.1°C with nights near 15.7°C. The long-term trend is warming, about 0.3°C per decade.
August is one of the drier months in Twin Falls, averaging 14 mm of rainfall. The wettest August on record was 2014 with 97 mm, while the driest was 2016 at 1 mm.
Relative humidity in Twin Falls during August averages 29%. The most humid August was 2014 at 51%, and the least humid was 1988 at 20%.
August receives about 6.6 kWh/m²/day of solar energy in Twin Falls. The sunniest August was 2006 at 7.1 kWh/m²/day, and the cloudiest was 2014 at 5.6.
Average wind speed in Twin Falls during August is 2.3 m/s. The windiest August was 1985 at 2.9 m/s, while the calmest were 1983 and 2014 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.3°C | 23.5°C | 23.9°C | 24.2°C | 24.9°C | +1.6°C |
| Avg High | 31.5°C | 32.0°C | 32.2°C | 32.3°C | 32.8°C | +1.3°C |
| Avg Low | 15.1°C | 15.1°C | 15.7°C | 16.1°C | 17.0°C | +1.9°C |
| Avg Rain | 15 mm | 12 mm | 12 mm | 17 mm | 15 mm | 0 mm |
August temperatures in Twin Falls have risen by about 1.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 3.9°C (1992) to a record high of 40.4°C (1983).
Rainfall in August is one of the drier months, averaging 14 mm, with a wettest year of 97 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Twin Falls
August is one of the best times to visit Twin Falls. Expect days averaging 32.1°C and nights around 15.7°C (mean 23.9°C) — warmer than Twin Falls's yearly average — with low rainfall (14 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 | 32.7°C | 24.9°C | 17.0°C | 39.2°C | 13.9°C | 23 mm | 31% | 2.1 m/s | 6.3 |
| 2024 | 33.3°C | 25.0°C | 16.6°C | 40.4°C | 8.3°C | 7 mm | 25% | 2.4 m/s | 6.6 |
| 2023 | 31.9°C | 24.4°C | 16.9°C | 38.5°C | 11.1°C | 32 mm | 41% | 2.3 m/s | 6.2 |
| 2022 🔥 | 34.2°C | 26.6°C | 19.1°C | 39.6°C | 14.2°C | 11 mm | 31% | 2 m/s | 6.1 |
| 2021 | 30.8°C | 23.0°C | 15.1°C | 39.1°C | 9.8°C | 14 mm | 31% | 2.3 m/s | 5.9 |
| 2020 | 33.8°C | 25.6°C | 17.4°C | 39.7°C | 11.8°C | 4 mm | 27% | 2.7 m/s | 6.6 |
| 2019 | 33.5°C | 25.3°C | 17.0°C | 38.7°C | 11.6°C | 12 mm | 27% | 2.3 m/s | 6.9 |
| 2018 | 32.2°C | 24.1°C | 16.1°C | 39.5°C | 7.7°C | 4 mm | 25% | 2.3 m/s | 6.3 |
| 2017 | 32.9°C | 25.0°C | 17.1°C | 38.0°C | 11.0°C | 5 mm | 30% | 2.2 m/s | 6.3 |
| 2016 | 32.2°C | 23.9°C | 15.5°C | 37.3°C | 9.9°C | 1 mm | 22% | 2.4 m/s | 7 |
| 2015 | 31.9°C | 24.1°C | 16.2°C | 37.0°C | 10.8°C | 16 mm | 31% | 2.5 m/s | 6.2 |
| 2014 🌧️ | 28.2°C | 21.6°C | 15.0°C | 37.4°C | 9.3°C | 97 mm | 51% | 1.8 m/s | 5.6 |
| 2013 | 34.0°C | 25.6°C | 17.2°C | 38.7°C | 13.1°C | 10 mm | 26% | 2.3 m/s | 6.6 |
| 2012 | 34.0°C | 25.5°C | 17.0°C | 38.6°C | 11.1°C | 14 mm | 26% | 2.3 m/s | 6.4 |
| 2011 | 33.7°C | 25.1°C | 16.5°C | 38.6°C | 12.0°C | 8 mm | 28% | 2 m/s | 6.9 |
| 2010 | 30.4°C | 22.1°C | 13.8°C | 38.5°C | 6.8°C | 7 mm | 29% | 2.6 m/s | 6.7 |
| 2009 | 30.5°C | 22.5°C | 14.5°C | 37.8°C | 7.8°C | 12 mm | 35% | 2.1 m/s | 6.4 |
| 2008 | 32.0°C | 23.7°C | 15.4°C | 37.7°C | 8.9°C | 5 mm | 25% | 2.6 m/s | 7 |
| 2007 | 33.1°C | 24.7°C | 16.4°C | 39.1°C | 12.2°C | 9 mm | 25% | 2.4 m/s | 6.8 |
| 2006 | 31.6°C | 23.3°C | 15.0°C | 36.8°C | 6.6°C | 4 mm | 25% | 2.5 m/s | 7.1 |
| 2005 | 31.7°C | 23.6°C | 15.5°C | 38.3°C | 7.4°C | 14 mm | 28% | 2.3 m/s | 6.7 |
| 2004 | 30.2°C | 22.5°C | 14.7°C | 37.7°C | 7.2°C | 29 mm | 35% | 2.2 m/s | 6.5 |
| 2003 | 33.4°C | 25.4°C | 17.4°C | 39.8°C | 12.4°C | 30 mm | 31% | 2.1 m/s | 6.6 |
| 2002 | 30.3°C | 22.0°C | 13.6°C | 35.3°C | 10.1°C | 3 mm | 24% | 2.6 m/s | 6.9 |
| 2001 | 35.2°C | 26.4°C | 17.6°C | 40.0°C | 12.5°C | 6 mm | 23% | 2.3 m/s | 6.7 |
| 2000 | 33.7°C | 25.3°C | 16.9°C | 39.0°C | 10.2°C | 8 mm | 22% | 2.6 m/s | 6.7 |
| 1999 | 32.5°C | 24.0°C | 15.5°C | 37.4°C | 6.3°C | 12 mm | 30% | 2.4 m/s | 6.3 |
| 1998 | 33.1°C | 24.6°C | 16.1°C | 38.2°C | 11.9°C | 6 mm | 29% | 2.3 m/s | 6.8 |
| 1997 | 32.1°C | 23.8°C | 15.5°C | 37.9°C | 11.8°C | 16 mm | 33% | 2.4 m/s | 6.8 |
| 1996 | 32.0°C | 23.3°C | 14.5°C | 37.5°C | 8.2°C | 5 mm | 25% | 2.5 m/s | 7 |
| 1995 | 31.9°C | 23.0°C | 14.1°C | 36.9°C | 6.7°C | 10 mm | 30% | 2.4 m/s | 6.8 |
| 1994 | 33.7°C | 25.3°C | 16.9°C | 38.7°C | 9.6°C | 14 mm | 25% | 2.2 m/s | 6.5 |
| 1993 ❄️ | 28.5°C | 20.2°C | 12.0°C | 34.4°C | 5.0°C | 18 mm | 37% | 2.6 m/s | 6.5 |
| 1992 | 31.8°C | 23.6°C | 15.4°C | 38.9°C | 3.9°C | 5 mm | 24% | 2.4 m/s | 6.8 |
| 1991 | 32.9°C | 24.7°C | 16.4°C | 37.9°C | 11.0°C | 18 mm | 28% | 2.2 m/s | 6.3 |
| 1990 | 31.1°C | 22.8°C | 14.5°C | 39.9°C | 9.6°C | 17 mm | 33% | 2.2 m/s | 6.2 |
| 1989 | 29.2°C | 21.4°C | 13.6°C | 37.1°C | 5.2°C | 27 mm | 35% | 2.3 m/s | 6.3 |
| 1988 | 32.1°C | 23.2°C | 14.3°C | 37.8°C | 9.6°C | 2 mm | 20% | 2.6 m/s | 6.9 |
| 1987 | 30.0°C | 21.7°C | 13.5°C | 36.7°C | 7.9°C | 9 mm | 27% | 2.4 m/s | 6.9 |
| 1986 | 33.2°C | 25.1°C | 16.9°C | 37.4°C | 11.3°C | 12 mm | 27% | 2.1 m/s | 6.7 |
| 1985 | 30.0°C | 21.5°C | 12.9°C | 38.0°C | 6.9°C | 2 mm | 25% | 2.9 m/s | 6.8 |
| 1984 | 31.6°C | 23.6°C | 15.6°C | 36.8°C | 10.0°C | 28 mm | 37% | 2.3 m/s | 6 |
| 1983 | 31.2°C | 23.8°C | 16.4°C | 40.4°C | 10.7°C | 39 mm | 43% | 1.8 m/s | — |
| 1982 | 32.5°C | 24.2°C | 16.0°C | 37.8°C | 11.4°C | 16 mm | 32% | 2.2 m/s | — |
| 1981 | 34.0°C | 25.4°C | 16.9°C | 37.4°C | 9.3°C | 3 mm | 22% | 2.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 32.1°C with lows near 15.7°C (mean 23.9°C), based on 45 years of NASA POWER data.
August averages 14 mm of rainfall in Twin Falls, one of the drier months. The wettest on record was 97 mm in 2014.
The hottest August reached 40.4°C in 1983. The coldest dipped to 3.9°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.1°C. Daytime highs moved from 31.9°C to 32.6°C and overnight lows from 15.6°C to 16.9°C over the same span.
August is one of the warmer months of the year in Twin Falls and one of the drier months, so plan for around 32.1°C daytime highs and 15.7°C at night.
Not quite — August is the 11th coolest month in Twin Falls, averaging 23.9°C.
For August in Twin Falls, pack light, breathable clothing and sun protection, with typical highs of 32.1°C and lows of 15.7°C.
Relative humidity in August averages 29% — relatively dry.
Average wind speed in August is 2.3 m/s. The windiest August on record averaged 2.9 m/s (1985).
The wettest August on record was 2014 with 97 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 Twin Falls 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.
