August is one of the warmer months of the year in Valley Stream, with average highs near 25.7°C and lows around 20.6°C (mean 23.2°C). It is about average for rainfall, averaging 107 mm of rainfall and 77% relative humidity across the period.
August is one of the warmer months of the year in Valley Stream. Across 45 years of records, the warmest August in Valley Stream was 2005 — when the month averaged 25.4°C — while the coldest was 1994 at 21.2°C. Typical August days reach 25.7°C with nights near 20.6°C. The long-term trend is warming, about 0.4°C per decade.
August is about average for rainfall in Valley Stream, averaging 107 mm of rainfall. The wettest August on record was 2011 with 380 mm, while the driest was 1995 at 25 mm.
Relative humidity in Valley Stream during August averages 77%. The most humid August was 2003 at 86%, and the least humid was 1995 at 70%.
August receives about 5.4 kWh/m²/day of solar energy in Valley Stream. The sunniest August was 2016 at 6.2 kWh/m²/day, and the cloudiest was 1990 at 4.6.
Average wind speed in Valley Stream during August is 3.3 m/s. The windiest Augusts were 1995 and 1999 at 3.8 m/s, while the calmest was 2008 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.4°C | 22.7°C | 23.5°C | 23.7°C | 23.8°C | +1.4°C |
| Avg High | 25.2°C | 25.4°C | 26.0°C | 26.1°C | 26.2°C | +1°C |
| Avg Low | 19.7°C | 20.0°C | 21.0°C | 21.2°C | 21.4°C | +1.7°C |
| Avg Rain | 87 mm | 117 mm | 97 mm | 130 mm | 100 mm | +13 mm |
August temperatures in Valley Stream have risen by about 1.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 11.6°C (1982) to a record high of 32.4°C (2010).
Rainfall in August is about average for rainfall, averaging 107 mm, with a wettest year of 380 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
One of the best times to visit Valley Stream
August is one of the best times to visit Valley Stream. Expect days averaging 25.7°C and nights around 20.6°C (mean 23.2°C) — warmer than Valley Stream's yearly average — with higher rainfall (107 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 | 25.5°C | 22.8°C | 20.2°C | 29.9°C | 15.9°C | 35 mm | 72% | 3.6 m/s | 5.7 |
| 2024 | 25.8°C | 23.2°C | 20.7°C | 29.4°C | 15.8°C | 142 mm | 82% | 3.4 m/s | 5.3 |
| 2023 | 25.6°C | 23.2°C | 20.8°C | 28.8°C | 18.1°C | 114 mm | 79% | 3.3 m/s | 5.1 |
| 2022 | 27.6°C | 25.1°C | 22.6°C | 30.9°C | 19.8°C | 56 mm | 75% | 3.3 m/s | 5.8 |
| 2021 | 26.2°C | 24.2°C | 22.2°C | 30.4°C | 18.9°C | 151 mm | 83% | 3.1 m/s | 4.8 |
| 2020 | 26.4°C | 24.2°C | 21.9°C | 29.8°C | 18.6°C | 104 mm | 80% | 3.5 m/s | 5.3 |
| 2019 | 25.6°C | 23.4°C | 21.2°C | 28.6°C | 16.3°C | 145 mm | 81% | 3 m/s | 5.5 |
| 2018 | 26.7°C | 24.6°C | 22.5°C | 29.5°C | 18.6°C | 132 mm | 84% | 3.4 m/s | 5.5 |
| 2017 | 24.8°C | 22.6°C | 20.4°C | 27.7°C | 17.1°C | 144 mm | 79% | 3.1 m/s | 5.4 |
| 2016 | 27.2°C | 24.9°C | 22.6°C | 30.5°C | 18.1°C | 82 mm | 77% | 3.3 m/s | 6.2 |
| 2015 | 27.1°C | 24.3°C | 21.5°C | 29.1°C | 19.1°C | 71 mm | 72% | 3.3 m/s | 6.1 |
| 2014 | 25.2°C | 22.5°C | 19.9°C | 27.3°C | 17.2°C | 97 mm | 73% | 3.1 m/s | 5.8 |
| 2013 | 24.8°C | 22.4°C | 20.0°C | 27.6°C | 16.3°C | 93 mm | 79% | 3.2 m/s | 5.1 |
| 2012 | 26.8°C | 24.4°C | 22.1°C | 29.3°C | 18.7°C | 99 mm | 75% | 3.1 m/s | 5.5 |
| 2011 🌧️ | 25.8°C | 23.3°C | 20.8°C | 29.7°C | 15.8°C | 380 mm | 79% | 3.5 m/s | 5.5 |
| 2010 | 26.9°C | 24.1°C | 21.4°C | 32.4°C | 17.1°C | 59 mm | 74% | 3.4 m/s | 5.3 |
| 2009 | 26.1°C | 23.9°C | 21.7°C | 29.5°C | 17.8°C | 108 mm | 82% | 3 m/s | 5.2 |
| 2008 | 25.4°C | 22.6°C | 19.8°C | 28.3°C | 16.8°C | 79 mm | 73% | 2.8 m/s | 6.1 |
| 2007 | 25.4°C | 22.9°C | 20.3°C | 29.7°C | 16.3°C | 123 mm | 80% | 3.2 m/s | 5.1 |
| 2006 | 26.5°C | 23.9°C | 21.3°C | 32.0°C | 17.6°C | 93 mm | 74% | 3.3 m/s | 5.4 |
| 2005 🔥 | 27.9°C | 25.4°C | 22.8°C | 31.4°C | 18.8°C | 34 mm | 74% | 3.1 m/s | 5.3 |
| 2004 | 24.7°C | 22.5°C | 20.3°C | 28.7°C | 15.9°C | 101 mm | 83% | 3.4 m/s | 5.1 |
| 2003 | 25.3°C | 23.0°C | 20.7°C | 28.5°C | 15.9°C | 125 mm | 86% | 3.1 m/s | 5.2 |
| 2002 | 27.1°C | 24.3°C | 21.6°C | 31.5°C | 17.5°C | 117 mm | 72% | 3.5 m/s | 5.4 |
| 2001 | 27.1°C | 24.4°C | 21.7°C | 31.8°C | 18.7°C | 90 mm | 75% | 3.4 m/s | 5.3 |
| 2000 | 24.3°C | 22.0°C | 19.7°C | 27.8°C | 14.9°C | 101 mm | 81% | 3.3 m/s | 5 |
| 1999 | 26.2°C | 23.5°C | 20.9°C | 31.6°C | 16.7°C | 125 mm | 72% | 3.8 m/s | 5.3 |
| 1998 | 26.2°C | 23.6°C | 20.9°C | 28.6°C | 16.3°C | 61 mm | 75% | 3.4 m/s | 5.9 |
| 1997 | 24.9°C | 22.2°C | 19.5°C | 29.4°C | 16.8°C | 124 mm | 76% | 3.3 m/s | 5.4 |
| 1996 | 24.6°C | 22.1°C | 19.6°C | 27.3°C | 17.6°C | 69 mm | 81% | 2.9 m/s | 5.4 |
| 1995 | 26.7°C | 23.5°C | 20.3°C | 30.0°C | 16.7°C | 25 mm | 70% | 3.8 m/s | 6 |
| 1994 ❄️ | 23.9°C | 21.2°C | 18.6°C | 27.1°C | 15.1°C | 152 mm | 80% | 3.4 m/s | 5.4 |
| 1993 | 25.5°C | 23.0°C | 20.6°C | 29.4°C | 18.1°C | 105 mm | 78% | 3 m/s | 5.5 |
| 1992 | 24.2°C | 21.5°C | 18.7°C | 27.9°C | 15.4°C | 136 mm | 79% | 3.5 m/s | 5.1 |
| 1991 | 26.2°C | 23.4°C | 20.6°C | 29.8°C | 18.3°C | 154 mm | 77% | 3.5 m/s | 5.4 |
| 1990 | 25.2°C | 22.7°C | 20.2°C | 27.8°C | 16.4°C | 216 mm | 82% | 3.4 m/s | 4.6 |
| 1989 | 24.2°C | 22.1°C | 19.9°C | 27.8°C | 16.1°C | 141 mm | 82% | 3.4 m/s | 4.9 |
| 1988 | 26.1°C | 23.5°C | 20.8°C | 30.1°C | 15.4°C | 67 mm | 77% | 3.5 m/s | 5.1 |
| 1987 | 24.9°C | 22.2°C | 19.5°C | 29.3°C | 15.8°C | 114 mm | 75% | 3.5 m/s | 5.1 |
| 1986 | 24.3°C | 21.8°C | 19.2°C | 27.6°C | 12.9°C | 106 mm | 76% | 3.5 m/s | 5.4 |
| 1985 | 25.5°C | 22.9°C | 20.3°C | 30.6°C | 17.0°C | 87 mm | 73% | 3.3 m/s | 5.3 |
| 1984 | 24.9°C | 22.4°C | 19.9°C | 27.7°C | 15.7°C | 51 mm | 83% | 3 m/s | 5.7 |
| 1983 | 26.5°C | 23.3°C | 20.1°C | 31.1°C | 16.1°C | 99 mm | 75% | 3.2 m/s | — |
| 1982 | 24.7°C | 21.5°C | 18.4°C | 27.4°C | 11.6°C | 74 mm | 72% | 3.5 m/s | — |
| 1981 | 25.4°C | 22.1°C | 18.9°C | 28.3°C | 14.8°C | 44 mm | 72% | 3.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 25.7°C with lows near 20.6°C (mean 23.2°C), based on 45 years of NASA POWER data.
August averages 107 mm of rainfall in Valley Stream, about average for rainfall. The wettest on record was 380 mm in 2011.
The hottest August reached 32.4°C in 2010. The coldest dipped to 11.6°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 25.4°C to 26.1°C and overnight lows from 19.5°C to 21.3°C over the same span.
August is one of the warmer months of the year in Valley Stream and about average for rainfall, so plan for around 25.7°C daytime highs and 20.6°C at night.
Not quite — August is the 11th coolest month in Valley Stream, averaging 23.2°C.
For August in Valley Stream, pack light layers you can adjust through the day, with typical highs of 25.7°C and lows of 20.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 77% — quite humid.
Average wind speed in August is 3.3 m/s. The windiest August on record averaged 3.8 m/s (1995).
The wettest August on record was 2011 with 380 mm. On average, August sees 107 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 Valley Stream 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.
