Niagara Falls Weather in August
Average highs run from 27°C on August 1 to 26°C on August 31, and lows from 17°C to 16°C. Normal precipitation for the month is 78 mm over about 16 wet days.
August day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
August at a glance
- Average high
- 26°C
- Average low
- 17°C
- Precipitation
- 78 mm
- Reanalysis high
- 34°CAug 4, 2012
- Reanalysis low
- 9°CAug 20, 1992
- Daylight
- 14 h 31 min to 13 h 13 min
- Cloud cover
- 67%
- Humidity
- 70%
- Dew point
- 15°C
- Wind
- 9.7 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 27°C | 17°C | 33°C 2007 | 11°C 1992 | 53% |
| Aug 2 | 27°C | 17°C | 33°C 2007 | 14°C 1996 | 54% |
| Aug 3 | 27°C | 17°C | 32°C 2012 | 14°C 1996 | 53% |
| Aug 4 | 27°C | 17°C | 34°C 2012 | 13°C 1992 | 53% |
| Aug 5 | 27°C | 17°C | 32°C 2016 | 11°C 1992 | 52% |
| Aug 6 | 27°C | 17°C | 31°C 2001 | 10°C 1994 | 52% |
| Aug 7 | 27°C | 17°C | 32°C 2001 | 11°C 1994 | 51% |
| Aug 8 | 27°C | 17°C | 33°C 2001 | 13°C 2002 | 52% |
| Aug 9 | 27°C | 17°C | 33°C 2016 | 13°C 1999 | 52% |
| Aug 10 | 27°C | 17°C | 33°C 2016 | 13°C 1994 | 52% |
| Aug 11 | 26°C | 17°C | 33°C 2016 | 12°C 1996 | 51% |
| Aug 12 | 26°C | 17°C | 32°C 2016 | 11°C 1992 | 50% |
| Aug 13 | 26°C | 17°C | 33°C 2016 | 12°C 1992 | 51% |
| Aug 14 | 26°C | 17°C | 33°C 2002 | 10°C 1992 | 51% |
| Aug 15 | 26°C | 17°C | 30°C 2020 | 10°C 1992 | 51% |
| Aug 16 | 26°C | 17°C | 31°C 1995 | 11°C 1994 | 50% |
| Aug 17 | 26°C | 17°C | 31°C 2009 | 12°C 2000 | 48% |
| Aug 18 | 26°C | 16°C | 30°C 1995 | 12°C 2007 | 47% |
| Aug 19 | 26°C | 16°C | 32°C 2016 | 12°C 1998 | 46% |
| Aug 20 | 26°C | 16°C | 31°C 2016 | 9°C 1992 | 46% |
| Aug 21 | 26°C | 16°C | 30°C 2017 | 10°C 2000 | 45% |
| Aug 22 | 26°C | 16°C | 30°C 2008 | 10°C 1993 | 44% |
| Aug 23 | 26°C | 16°C | 32°C 2020 | 11°C 1994 | 42% |
| Aug 24 | 26°C | 16°C | 32°C 2012 | 11°C 1994 | 41% |
| Aug 25 | 26°C | 16°C | 32°C 2012 | 10°C 1995 | 40% |
| Aug 26 | 26°C | 16°C | 32°C 1993 | 12°C 2008 | 40% |
| Aug 27 | 26°C | 16°C | 31°C 2016 | 11°C 2017 | 40% |
| Aug 28 | 26°C | 16°C | 31°C 2018 | 13°C 1992 | 39% |
| Aug 29 | 26°C | 16°C | 32°C 2007 | 11°C 1992 | 38% |
| Aug 30 | 26°C | 16°C | 32°C 2010 | 10°C 1994 | 38% |
| Aug 31 | 26°C | 16°C | 32°C 2010 | 10°C 1999 | 39% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:07 AM, sunset 8:38 PM
- August 31
- sunrise 6:40 AM, sunset 7:53 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.