August is one of the warmer months of the year in Owasso, with average highs near 33.8°C and lows around 21.6°C (mean 27.7°C). It is about average for rainfall, averaging 89 mm of rainfall and 64% relative humidity across the period.
August is one of the warmer months of the year in Owasso. Across 45 years of records, the warmest August in Owasso was 2011 — when the month averaged 31.5°C — while the coldest was 1992 at 23.2°C. Typical August days reach 33.8°C with nights near 21.6°C. The long-term August temperature trend is broadly flat.
August is about average for rainfall in Owasso, averaging 89 mm of rainfall. The wettest August on record was 2019 with 219 mm, while the driest was 2000 at 1 mm.
Relative humidity in Owasso during August averages 64%. The most humid August was 2019 at 83%, and the least humid was 2012 at 46%.
August receives about 6 kWh/m²/day of solar energy in Owasso. 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 Owasso during August is 2.4 m/s. The windiest August was 2000 at 2.9 m/s, while the calmest were 1995, 2008 and 2019 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.9°C | 27.1°C | 28.1°C | 27.6°C | 27.9°C | 0°C |
| Avg High | 34.2°C | 33.2°C | 34.1°C | 33.4°C | 34.0°C | -0.2°C |
| Avg Low | 21.5°C | 20.9°C | 22.1°C | 21.8°C | 21.8°C | +0.3°C |
| Avg Rain | 89 mm | 80 mm | 90 mm | 107 mm | 76 mm | -13 mm |
August temperatures in Owasso have stayed relatively stable across the record.
August has ranged from a record low of 11.5°C (2009) to a record high of 46°C (2011).
Rainfall in August is about average for rainfall, averaging 89 mm, with a wettest year of 219 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.
One of the best times to visit Owasso
August is one of the best times to visit Owasso. Expect days averaging 33.8°C and nights around 21.6°C (mean 27.7°C) — warmer than Owasso's yearly average — with higher rainfall (89 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 | 30.8°C | 25.6°C | 20.5°C | 36.2°C | 14.7°C | 109 mm | 73% | 2.1 m/s | 5.6 |
| 2024 | 35.7°C | 29.1°C | 22.5°C | 41.4°C | 18.1°C | 86 mm | 58% | 2.5 m/s | 6 |
| 2023 | 36.2°C | 29.3°C | 22.3°C | 42.9°C | 15.6°C | 115 mm | 61% | 2.2 m/s | 6.5 |
| 2022 | 35.5°C | 29.0°C | 22.6°C | 41.4°C | 18.9°C | 43 mm | 60% | 2.4 m/s | 6.2 |
| 2021 | 33.3°C | 27.9°C | 22.5°C | 37.6°C | 17.2°C | 44 mm | 71% | 2.5 m/s | 6 |
| 2020 | 32.5°C | 26.5°C | 20.5°C | 37.6°C | 14.8°C | 59 mm | 69% | 2.2 m/s | 6.3 |
| 2019 🌧️ | 30.6°C | 26.4°C | 22.3°C | 34.9°C | 15.8°C | 219 mm | 83% | 2 m/s | 5.2 |
| 2018 | 32.4°C | 27.1°C | 21.8°C | 36.6°C | 18.1°C | 118 mm | 70% | 2.6 m/s | 5.4 |
| 2017 | 30.5°C | 25.2°C | 19.8°C | 34.2°C | 14.9°C | 151 mm | 73% | 2.3 m/s | 5.6 |
| 2016 | 33.4°C | 27.9°C | 22.4°C | 38.6°C | 14.8°C | 55 mm | 69% | 2.4 m/s | 5.8 |
| 2015 | 29.8°C | 24.8°C | 19.8°C | 35.7°C | 12.9°C | 123 mm | 76% | 2.1 m/s | 5.8 |
| 2014 | 34.8°C | 28.2°C | 21.7°C | 39.3°C | 15.6°C | 49 mm | 62% | 2.3 m/s | 6.7 |
| 2013 | 31.4°C | 26.0°C | 20.7°C | 38.9°C | 15.4°C | 118 mm | 75% | 2.1 m/s | 5.8 |
| 2012 | 35.9°C | 28.8°C | 21.7°C | 45.5°C | 15.6°C | 81 mm | 46% | 2.7 m/s | 6 |
| 2011 🔥 | 38.4°C | 31.5°C | 24.5°C | 46.0°C | 18.4°C | 102 mm | 53% | 2.5 m/s | 6 |
| 2010 | 37.0°C | 30.2°C | 23.5°C | 41.7°C | 15.2°C | 51 mm | 56% | 2.7 m/s | 6.6 |
| 2009 | 32.4°C | 26.2°C | 20.1°C | 39.9°C | 11.5°C | 110 mm | 66% | 2.7 m/s | 6.1 |
| 2008 | 29.7°C | 25.1°C | 20.5°C | 37.2°C | 16.3°C | 127 mm | 79% | 2 m/s | 5.4 |
| 2007 | 32.7°C | 27.9°C | 23.1°C | 37.1°C | 17.3°C | 69 mm | 74% | 2.5 m/s | 6.2 |
| 2006 | 35.6°C | 29.9°C | 24.1°C | 41.6°C | 16.8°C | 103 mm | 59% | 2.5 m/s | 6.1 |
| 2005 | 34.4°C | 28.6°C | 22.9°C | 38.8°C | 18.8°C | 119 mm | 64% | 2.1 m/s | 5.9 |
| 2004 | 30.3°C | 24.4°C | 18.4°C | 36.9°C | 12.4°C | 51 mm | 70% | 2.5 m/s | 6 |
| 2003 | 35.9°C | 29.6°C | 23.3°C | 41.5°C | 18.6°C | 182 mm | 56% | 2.1 m/s | 5.8 |
| 2002 | 34.5°C | 28.1°C | 21.7°C | 37.7°C | 15.8°C | 85 mm | 62% | 2.4 m/s | 5.9 |
| 2001 | 36.8°C | 29.9°C | 22.9°C | 41.2°C | 17.2°C | 56 mm | 52% | 2.5 m/s | 6.3 |
| 2000 | 38.3°C | 31.0°C | 23.7°C | 42.4°C | 18.5°C | 1 mm | 47% | 2.9 m/s | 6.7 |
| 1999 | 34.4°C | 27.6°C | 20.8°C | 40.5°C | 16.3°C | 35 mm | 61% | 2.3 m/s | 6.5 |
| 1998 | 36.7°C | 29.9°C | 23.1°C | 40.8°C | 19.5°C | 60 mm | 55% | 2.2 m/s | 6.1 |
| 1997 | 31.0°C | 25.5°C | 19.9°C | 35.9°C | 13.6°C | 176 mm | 71% | 2.3 m/s | 5.6 |
| 1996 | 33.2°C | 27.3°C | 21.4°C | 37.9°C | 17.5°C | 80 mm | 64% | 2.2 m/s | 5.7 |
| 1995 | 33.0°C | 27.5°C | 22.1°C | 36.8°C | 17.2°C | 46 mm | 70% | 2 m/s | 6.4 |
| 1994 | 32.9°C | 26.1°C | 19.4°C | 37.4°C | 12.9°C | 122 mm | 64% | 2.5 m/s | 6.3 |
| 1993 | 32.9°C | 27.3°C | 21.8°C | 38.0°C | 14.6°C | 81 mm | 70% | 2.4 m/s | 6 |
| 1992 ❄️ | 28.5°C | 23.2°C | 17.8°C | 33.3°C | 12.4°C | 74 mm | 75% | 2.2 m/s | 5.4 |
| 1991 | 34.9°C | 28.3°C | 21.6°C | 41.0°C | 16.5°C | 67 mm | 55% | 2.1 m/s | 5.9 |
| 1990 | 34.7°C | 28.0°C | 21.3°C | 40.4°C | 15.0°C | 60 mm | 63% | 2.4 m/s | 6.2 |
| 1989 | 32.5°C | 26.7°C | 20.9°C | 37.6°C | 12.1°C | 109 mm | 68% | 2.4 m/s | 5.9 |
| 1988 | 34.9°C | 28.5°C | 22.1°C | 40.0°C | 11.7°C | 66 mm | 60% | 2.3 m/s | 6 |
| 1987 | 34.6°C | 28.1°C | 21.7°C | 39.5°C | 13.6°C | 132 mm | 62% | 2.7 m/s | 6.1 |
| 1986 | 31.0°C | 25.2°C | 19.4°C | 35.7°C | 12.5°C | 116 mm | 65% | 2.3 m/s | 5.5 |
| 1985 | 33.2°C | 26.8°C | 20.3°C | 38.7°C | 15.0°C | 109 mm | 69% | 2.3 m/s | 5.9 |
| 1984 | 35.5°C | 28.6°C | 21.6°C | 42.4°C | 15.6°C | 59 mm | 55% | 2.3 m/s | 5.9 |
| 1983 | 37.9°C | 31.4°C | 24.9°C | 40.8°C | 22.1°C | 41 mm | 51% | 2.2 m/s | — |
| 1982 | 36.2°C | 29.4°C | 22.7°C | 40.8°C | 19.8°C | 56 mm | 61% | 2.8 m/s | — |
| 1981 | 32.0°C | 26.0°C | 19.9°C | 36.4°C | 13.9°C | 109 mm | 68% | 2.6 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 33.8°C with lows near 21.6°C (mean 27.7°C), based on 45 years of NASA POWER data.
August averages 89 mm of rainfall in Owasso, about average for rainfall. The wettest on record was 219 mm in 2019.
The hottest August reached 46°C in 2011. The coldest dipped to 11.5°C in 2009.
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 21.9°C to 22.1°C while daytime highs eased from 35°C to 34.3°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Owasso and about average for rainfall, so plan for around 33.8°C daytime highs and 21.6°C at night.
Not quite — August is the 12th coolest month in Owasso, averaging 27.7°C.
For August in Owasso, pack light, breathable clothing and sun protection, with typical highs of 33.8°C and lows of 21.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 64% — moderately humid.
Average wind speed in August is 2.4 m/s. The windiest August on record averaged 2.9 m/s (2000).
The wettest August on record was 2019 with 219 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 Owasso 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.
