August is one of the warmer months of the year in Fall River, with average highs near 25.6°C and lows around 18.4°C (mean 22°C). It is about average for rainfall, averaging 93 mm of rainfall and 78% relative humidity across the period.
August is one of the warmer months of the year in Fall River. Across 45 years of records, the warmest Augusts in Fall River were 2018 and 2022 — when the month averaged 24.2°C — while the coldest was 1986 at 20°C. Typical August days reach 25.6°C with nights near 18.4°C. The long-term trend is warming, about 0.5°C per decade.
August is about average for rainfall in Fall River, averaging 93 mm of rainfall. The wettest August on record was 1991 with 213 mm, while the driest was 1984 at 18 mm.
Relative humidity in Fall River during August averages 78%. The most humid August was 2004 at 83%, and the least humid was 1995 at 69%.
August receives about 5.4 kWh/m²/day of solar energy in Fall River. The sunniest Augusts were 2015 and 2016 at 6.1 kWh/m²/day, and the cloudiest was 2021 at 4.9.
Average wind speed in Fall River during August is 1.5 m/s. The windiest Augusts were 2010 and 2020 at 1.7 m/s, while the calmest were 1996, 1998 and 2005, among others at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.2°C | 21.5°C | 22.1°C | 22.6°C | 22.8°C | +1.6°C |
| Avg High | 24.9°C | 25.2°C | 25.6°C | 26.1°C | 26.3°C | +1.4°C |
| Avg Low | 17.5°C | 17.7°C | 18.7°C | 19.1°C | 19.3°C | +1.8°C |
| Avg Rain | 92 mm | 111 mm | 84 mm | 87 mm | 88 mm | -4 mm |
August temperatures in Fall River have risen by about 1.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 8.8°C (1982) to a record high of 33.5°C (2010).
Rainfall in August is about average for rainfall, averaging 93 mm, with a wettest year of 213 mm.
One of the best times to visit Fall River
August is one of the best times to visit Fall River. Expect days averaging 25.6°C and nights around 18.4°C (mean 22°C) — warmer than Fall River's yearly average — with higher rainfall (93 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 | 25.8°C | 21.7°C | 17.6°C | 30.3°C | 14.2°C | 60 mm | 72% | 1.6 m/s | 6 |
| 2024 | 25.6°C | 22.1°C | 18.6°C | 29.2°C | 13.8°C | 105 mm | 81% | 1.6 m/s | 5.4 |
| 2023 | 24.9°C | 21.8°C | 18.6°C | 28.1°C | 15.1°C | 131 mm | 81% | 1.6 m/s | 5.1 |
| 2022 | 27.7°C | 24.2°C | 20.7°C | 31.1°C | 17.1°C | 70 mm | 78% | 1.5 m/s | 5.7 |
| 2021 | 26.7°C | 23.6°C | 20.5°C | 32.0°C | 16.6°C | 115 mm | 81% | 1.4 m/s | 4.9 |
| 2020 | 27.2°C | 23.6°C | 20.0°C | 30.7°C | 14.7°C | 46 mm | 75% | 1.7 m/s | 5.4 |
| 2019 | 25.9°C | 22.5°C | 19.1°C | 29.9°C | 15.2°C | 97 mm | 79% | 1.5 m/s | 5.6 |
| 2018 🔥 | 27.4°C | 24.2°C | 21.0°C | 31.7°C | 16.0°C | 82 mm | 81% | 1.6 m/s | 5.4 |
| 2017 | 25.2°C | 21.7°C | 18.2°C | 29.3°C | 14.4°C | 57 mm | 77% | 1.4 m/s | 5.4 |
| 2016 | 27.4°C | 23.8°C | 20.2°C | 31.1°C | 14.9°C | 77 mm | 75% | 1.6 m/s | 6.1 |
| 2015 | 27.0°C | 23.4°C | 19.8°C | 30.9°C | 16.4°C | 62 mm | 77% | 1.4 m/s | 6.1 |
| 2014 | 25.0°C | 21.2°C | 17.4°C | 28.9°C | 14.2°C | 60 mm | 76% | 1.5 m/s | 5.8 |
| 2013 | 24.9°C | 21.3°C | 17.7°C | 29.1°C | 14.3°C | 76 mm | 78% | 1.5 m/s | 5.3 |
| 2012 | 26.6°C | 23.1°C | 19.7°C | 29.8°C | 14.8°C | 83 mm | 78% | 1.4 m/s | 5.6 |
| 2011 | 25.3°C | 22.2°C | 19.0°C | 29.8°C | 14.4°C | 204 mm | 81% | 1.6 m/s | 5.4 |
| 2010 | 26.4°C | 22.7°C | 18.9°C | 33.5°C | 14.7°C | 72 mm | 75% | 1.7 m/s | 5.5 |
| 2009 | 25.7°C | 22.5°C | 19.4°C | 28.8°C | 15.4°C | 69 mm | 83% | 1.4 m/s | 5.2 |
| 2008 | 24.8°C | 21.0°C | 17.3°C | 27.6°C | 13.2°C | 90 mm | 79% | 1.5 m/s | 5.9 |
| 2007 | 26.1°C | 22.2°C | 18.2°C | 31.2°C | 12.9°C | 38 mm | 75% | 1.4 m/s | 5.4 |
| 2006 | 24.9°C | 21.6°C | 18.2°C | 30.5°C | 13.2°C | 120 mm | 79% | 1.6 m/s | 5.4 |
| 2005 | 27.2°C | 23.5°C | 19.9°C | 32.8°C | 15.8°C | 63 mm | 77% | 1.3 m/s | 5.4 |
| 2004 | 24.1°C | 21.1°C | 18.0°C | 28.8°C | 13.3°C | 129 mm | 83% | 1.5 m/s | 5.1 |
| 2003 | 25.6°C | 22.7°C | 19.7°C | 29.0°C | 13.9°C | 99 mm | 83% | 1.5 m/s | 5.3 |
| 2002 | 27.1°C | 23.1°C | 19.1°C | 33.1°C | 14.8°C | 52 mm | 74% | 1.6 m/s | 5.6 |
| 2001 | 26.3°C | 22.8°C | 19.3°C | 32.4°C | 15.4°C | 91 mm | 79% | 1.4 m/s | 5.4 |
| 2000 | 24.2°C | 20.8°C | 17.4°C | 27.6°C | 12.8°C | 87 mm | 82% | 1.5 m/s | 5.1 |
| 1999 | 25.6°C | 22.0°C | 18.3°C | 30.8°C | 14.0°C | 75 mm | 74% | 1.6 m/s | 5.2 |
| 1998 | 25.6°C | 21.9°C | 18.1°C | 28.5°C | 12.5°C | 85 mm | 78% | 1.3 m/s | 5.7 |
| 1997 | 24.5°C | 20.9°C | 17.3°C | 28.7°C | 14.3°C | 144 mm | 80% | 1.5 m/s | 5.2 |
| 1996 | 24.7°C | 21.1°C | 17.4°C | 28.6°C | 15.0°C | 74 mm | 80% | 1.3 m/s | 5.3 |
| 1995 | 26.7°C | 22.2°C | 17.6°C | 31.7°C | 13.6°C | 42 mm | 69% | 1.6 m/s | 5.8 |
| 1994 | 24.3°C | 20.6°C | 16.9°C | 29.9°C | 12.2°C | 142 mm | 78% | 1.6 m/s | 5.2 |
| 1993 | 25.9°C | 21.9°C | 17.9°C | 30.8°C | 14.5°C | 46 mm | 76% | 1.3 m/s | 5.7 |
| 1992 | 23.8°C | 20.3°C | 16.7°C | 27.7°C | 12.8°C | 168 mm | 80% | 1.5 m/s | 5.3 |
| 1991 🌧️ | 25.3°C | 21.8°C | 18.3°C | 29.3°C | 14.5°C | 213 mm | 80% | 1.6 m/s | 5.2 |
| 1990 | 25.4°C | 22.1°C | 18.8°C | 28.8°C | 15.6°C | 123 mm | 81% | 1.5 m/s | 5 |
| 1989 | 23.7°C | 20.6°C | 17.6°C | 26.9°C | 10.4°C | 164 mm | 83% | 1.5 m/s | 5.2 |
| 1988 | 25.9°C | 22.5°C | 19.1°C | 29.6°C | 12.4°C | 38 mm | 78% | 1.6 m/s | 5.4 |
| 1987 | 24.9°C | 20.7°C | 16.6°C | 31.3°C | 11.9°C | 100 mm | 73% | 1.6 m/s | 5.4 |
| 1986 ❄️ | 23.4°C | 20.0°C | 16.6°C | 26.3°C | 9.1°C | 132 mm | 79% | 1.6 m/s | 5.1 |
| 1985 | 25.1°C | 21.4°C | 17.7°C | 29.8°C | 12.8°C | 162 mm | 77% | 1.5 m/s | 5 |
| 1984 | 25.5°C | 21.9°C | 18.4°C | 30.6°C | 13.3°C | 18 mm | 81% | 1.3 m/s | 5.8 |
| 1983 | 26.0°C | 21.9°C | 17.8°C | 31.0°C | 12.9°C | 92 mm | 77% | 1.5 m/s | — |
| 1982 | 24.1°C | 20.2°C | 16.4°C | 27.8°C | 8.8°C | 80 mm | 75% | 1.6 m/s | — |
| 1981 | 25.7°C | 21.4°C | 17.1°C | 29.6°C | 11.5°C | 41 mm | 72% | 1.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 25.6°C with lows near 18.4°C (mean 22°C), based on 45 years of NASA POWER data.
August averages 93 mm of rainfall in Fall River, about average for rainfall. The wettest on record was 213 mm in 1991.
The hottest August reached 33.5°C in 2010. The coldest dipped to 8.8°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.3°C. Daytime highs moved from 25.3°C to 26.1°C and overnight lows from 17.5°C to 19.2°C over the same span.
August is one of the warmer months of the year in Fall River and about average for rainfall, so plan for around 25.6°C daytime highs and 18.4°C at night.
Not quite — August is the 11th coolest month in Fall River, averaging 22°C.
For August in Fall River, pack light layers you can adjust through the day, with typical highs of 25.6°C and lows of 18.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 78% — quite humid.
Average wind speed in August is 1.5 m/s. The windiest August on record averaged 1.7 m/s (2010).
The wettest August on record was 1991 with 213 mm. On average, August sees 93 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 Fall River 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.
