Click on a day for an hourly weather forecast
The temperatures in Niagara Falls in August are comfortable with low of 19°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Niagara Falls during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Niagara Falls in August 2025.
If you’re planning to visit Niagara Falls in the near future, we highly recommend that you review the 14 day weather forecast for Niagara Falls before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -6° | 6 | 5 | 21 | 104 mm | Awful | Niagara Falls in January |
| February | -1° / -6° | 6 | 4 | 19 | 117 mm | Awful | Niagara Falls in February |
| March | 4° / -2° | 9 | 9 | 13 | 115 mm | Awful | Niagara Falls in March |
| April | 10° / 3° | 10 | 14 | 6 | 145 mm | Awful | Niagara Falls in April |
| May | 18° / 10° | 8 | 23 | 0 | 146 mm | Ok | Niagara Falls in May |
| June | 22° / 15° | 8 | 22 | 0 | 173 mm | Ok | Niagara Falls in June |
| July | 26° / 18° | 9 | 22 | 0 | 171 mm | Good | Niagara Falls in July |
| August | 26° / 19° | 7 | 24 | 0 | 161 mm | Good | Niagara Falls in August |
| September | 22° / 15° | 7 | 23 | 0 | 121 mm | Ok | Niagara Falls in September |
| October | 15° / 10° | 10 | 20 | 1 | 146 mm | Ok | Niagara Falls in October |
| November | 8° / 3° | 9 | 14 | 7 | 103 mm | Awful | Niagara Falls in November |
| December | 2° / -1° | 8 | 7 | 17 | 115 mm | Awful | Niagara Falls in December |