August is one of the warmer months of the year in Broken Arrow, with average highs near 34.3°C and lows around 21.8°C (mean 28.1°C). It is about average for rainfall, averaging 89 mm of rainfall and 63% relative humidity across the period.
August is one of the warmer months of the year in Broken Arrow. Across 45 years of records, the warmest August in Broken Arrow was 2011 — when the month averaged 32.1°C — while the coldest was 1992 at 23.2°C. Typical August days reach 34.3°C with nights near 21.8°C. The long-term August temperature trend is broadly flat.
August is about average for rainfall in Broken Arrow, averaging 89 mm of rainfall. The wettest August on record was 2019 with 201 mm, while the driest was 2000 at 1 mm.
Relative humidity in Broken Arrow during August averages 63%. The most humid August was 2019 at 78%, and the least humid was 2000 at 45%.
August receives about 6 kWh/m²/day of solar energy in Broken Arrow. The sunniest Augusts were 2000 and 2014 at 6.7 kWh/m²/day, and the cloudiest was 2019 at 5.2.
Average wind speed in Broken Arrow during August is 1.9 m/s. The windiest Augusts were 1982 and 2000 at 2.3 m/s, while the calmest was 2008 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.2°C | 27.6°C | 28.4°C | 28.1°C | 28.3°C | +0.1°C |
| Avg High | 34.7°C | 34.0°C | 34.5°C | 34.1°C | 34.4°C | -0.3°C |
| Avg Low | 21.7°C | 21.2°C | 22.2°C | 22.1°C | 22.1°C | +0.4°C |
| Avg Rain | 85 mm | 79 mm | 97 mm | 98 mm | 86 mm | +1 mm |
August temperatures in Broken Arrow have stayed relatively stable across the record.
August has ranged from a record low of 11.6°C (1986) to a record high of 47.2°C (2011).
Rainfall in August is about average for rainfall, averaging 89 mm, with a wettest year of 201 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Broken Arrow
August is a good time to visit Broken Arrow, with days averaging 34.3°C and nights around 21.8°C (mean 28.1°C, warmer than Broken Arrow's yearly average) and higher rainfall. September and June 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 | 31.8°C | 26.4°C | 21.1°C | 37.5°C | 16.3°C | 107 mm | 71% | 1.7 m/s | 5.6 |
| 2024 | 35.2°C | 28.8°C | 22.4°C | 41.4°C | 17.8°C | 127 mm | 61% | 2 m/s | 6 |
| 2023 | 37.0°C | 29.8°C | 22.6°C | 42.8°C | 15.7°C | 106 mm | 59% | 1.8 m/s | 6.5 |
| 2022 | 36.3°C | 29.7°C | 23.1°C | 42.3°C | 19.8°C | 44 mm | 58% | 2 m/s | 6.2 |
| 2021 | 34.1°C | 28.5°C | 22.8°C | 37.7°C | 17.9°C | 55 mm | 68% | 2.1 m/s | 6 |
| 2020 | 32.3°C | 26.4°C | 20.5°C | 38.1°C | 15.4°C | 78 mm | 70% | 1.8 m/s | 6.3 |
| 2019 🌧️ | 32.1°C | 27.4°C | 22.8°C | 37.9°C | 16.5°C | 201 mm | 78% | 1.7 m/s | 5.2 |
| 2018 | 32.7°C | 27.3°C | 21.9°C | 36.7°C | 18.1°C | 112 mm | 70% | 2.1 m/s | 5.4 |
| 2017 | 30.8°C | 25.5°C | 20.2°C | 34.8°C | 15.3°C | 173 mm | 75% | 1.8 m/s | 5.6 |
| 2016 | 34.0°C | 28.2°C | 22.5°C | 38.7°C | 15.4°C | 52 mm | 68% | 1.9 m/s | 5.8 |
| 2015 | 29.8°C | 24.7°C | 19.6°C | 34.4°C | 12.6°C | 87 mm | 77% | 1.7 m/s | 5.8 |
| 2014 | 34.6°C | 28.1°C | 21.5°C | 39.2°C | 15.3°C | 49 mm | 63% | 1.8 m/s | 6.7 |
| 2013 | 33.1°C | 27.1°C | 21.1°C | 40.2°C | 15.8°C | 95 mm | 70% | 1.7 m/s | 5.8 |
| 2012 | 36.4°C | 29.2°C | 22.0°C | 46.1°C | 15.4°C | 76 mm | 47% | 2.2 m/s | 6 |
| 2011 🔥 | 39.3°C | 32.1°C | 24.9°C | 47.2°C | 19.3°C | 102 mm | 52% | 2.1 m/s | 6 |
| 2010 | 37.9°C | 31.0°C | 24.0°C | 42.4°C | 15.5°C | 34 mm | 53% | 2.2 m/s | 6.6 |
| 2009 | 33.1°C | 26.8°C | 20.5°C | 40.4°C | 12.0°C | 115 mm | 65% | 2.2 m/s | 6.1 |
| 2008 | 31.1°C | 26.1°C | 21.0°C | 39.7°C | 17.1°C | 141 mm | 76% | 1.6 m/s | 5.4 |
| 2007 | 33.3°C | 28.2°C | 23.1°C | 39.0°C | 18.3°C | 79 mm | 72% | 2 m/s | 6.2 |
| 2006 | 35.8°C | 30.0°C | 24.2°C | 42.1°C | 16.5°C | 110 mm | 60% | 2.1 m/s | 6.1 |
| 2005 | 34.6°C | 28.7°C | 22.8°C | 38.8°C | 18.5°C | 125 mm | 65% | 1.7 m/s | 5.9 |
| 2004 | 30.7°C | 24.6°C | 18.5°C | 37.0°C | 12.8°C | 46 mm | 69% | 2 m/s | 6 |
| 2003 | 35.9°C | 29.5°C | 23.2°C | 41.0°C | 19.0°C | 169 mm | 58% | 1.7 m/s | 5.8 |
| 2002 | 34.8°C | 28.3°C | 21.8°C | 38.4°C | 16.7°C | 105 mm | 62% | 2 m/s | 5.9 |
| 2001 | 36.7°C | 29.8°C | 23.0°C | 41.5°C | 17.8°C | 75 mm | 54% | 1.9 m/s | 6.3 |
| 2000 | 39.0°C | 31.5°C | 23.9°C | 42.8°C | 18.6°C | 1 mm | 45% | 2.3 m/s | 6.7 |
| 1999 | 36.7°C | 29.2°C | 21.7°C | 42.5°C | 17.6°C | 27 mm | 53% | 1.9 m/s | 6.5 |
| 1998 | 37.7°C | 30.8°C | 23.9°C | 43.0°C | 20.5°C | 50 mm | 51% | 1.8 m/s | 6.1 |
| 1997 | 31.6°C | 25.9°C | 20.2°C | 36.8°C | 15.1°C | 169 mm | 70% | 1.9 m/s | 5.6 |
| 1996 | 32.9°C | 27.1°C | 21.3°C | 36.8°C | 17.6°C | 77 mm | 67% | 1.8 m/s | 5.7 |
| 1995 | 34.5°C | 28.4°C | 22.3°C | 38.6°C | 17.6°C | 31 mm | 66% | 1.7 m/s | 6.4 |
| 1994 | 33.2°C | 26.3°C | 19.5°C | 37.2°C | 13.6°C | 129 mm | 64% | 2 m/s | 6.3 |
| 1993 | 35.3°C | 28.9°C | 22.6°C | 40.6°C | 14.8°C | 77 mm | 63% | 2.1 m/s | 6 |
| 1992 ❄️ | 28.5°C | 23.2°C | 17.8°C | 33.1°C | 11.7°C | 82 mm | 77% | 1.7 m/s | 5.4 |
| 1991 | 34.8°C | 28.1°C | 21.4°C | 40.3°C | 16.4°C | 81 mm | 57% | 1.7 m/s | 5.9 |
| 1990 | 35.0°C | 28.3°C | 21.5°C | 40.7°C | 15.8°C | 65 mm | 62% | 1.9 m/s | 6.2 |
| 1989 | 33.1°C | 27.0°C | 21.0°C | 38.0°C | 12.1°C | 87 mm | 66% | 2 m/s | 5.9 |
| 1988 | 34.9°C | 28.4°C | 21.9°C | 39.8°C | 12.2°C | 67 mm | 61% | 1.9 m/s | 6 |
| 1987 | 35.3°C | 28.8°C | 22.2°C | 40.1°C | 14.0°C | 133 mm | 60% | 2.2 m/s | 6.1 |
| 1986 | 31.5°C | 25.5°C | 19.5°C | 37.5°C | 11.6°C | 133 mm | 66% | 1.9 m/s | 5.5 |
| 1985 | 35.0°C | 28.1°C | 21.1°C | 39.9°C | 15.3°C | 90 mm | 63% | 2 m/s | 5.9 |
| 1984 | 35.5°C | 28.6°C | 21.7°C | 43.5°C | 16.3°C | 71 mm | 56% | 1.8 m/s | 5.9 |
| 1983 | 38.1°C | 31.5°C | 24.9°C | 41.3°C | 21.6°C | 37 mm | 51% | 1.8 m/s | — |
| 1982 | 36.3°C | 29.6°C | 22.8°C | 40.9°C | 20.5°C | 45 mm | 60% | 2.3 m/s | — |
| 1981 | 32.2°C | 26.1°C | 20.1°C | 36.6°C | 14.1°C | 103 mm | 68% | 2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 34.3°C with lows near 21.8°C (mean 28.1°C), based on 45 years of NASA POWER data.
August averages 89 mm of rainfall in Broken Arrow, about average for rainfall. The wettest on record was 201 mm in 2019.
The hottest August reached 47.2°C in 2011. The coldest dipped to 11.6°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 22.1°C to 22.4°C while daytime highs eased from 35.4°C to 34.9°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Broken Arrow and about average for rainfall, so plan for around 34.3°C daytime highs and 21.8°C at night.
Not quite — August is the 12th coolest month in Broken Arrow, averaging 28.1°C.
For August in Broken Arrow, pack light, breathable clothing and sun protection, with typical highs of 34.3°C and lows of 21.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 63% — moderately humid.
Average wind speed in August is 1.9 m/s. The windiest August on record averaged 2.3 m/s (1982).
The wettest August on record was 2019 with 201 mm. On average, August sees 89 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 Broken Arrow 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.
