Frequent average weather in Niagara Falls throughout the duration of August is 7 with the high being 14 with low daily temperautes being 3 celsius. The table below includes more detail:
| Month | Degrees Celsius |
|---|---|
| Temperature | 7 |
| High Temperature | 14 |
| Low Temperature | 3 |
Useful Links: Niagara Falls Weather: Average Weather & Yearly Climate