Click on a day for an hourly weather forecast
The temperatures in Fredericton in August are comfortable with low of 13°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Fredericton 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 Fredericton in August 2025.
If you’re planning to visit Fredericton in the near future, we highly recommend that you review the 14 day weather forecast for Fredericton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -5° / -12° | 5 | 6 | 20 | 145 mm | Awful | Fredericton in January |
| February | -4° / -11° | 5 | 4 | 20 | 135 mm | Awful | Fredericton in February |
| March | 1° / -7° | 8 | 6 | 18 | 133 mm | Awful | Fredericton in March |
| April | 8° / 0° | 9 | 13 | 8 | 132 mm | Awful | Fredericton in April |
| May | 16° / 6° | 9 | 22 | 0 | 145 mm | Ok | Fredericton in May |
| June | 21° / 10° | 8 | 22 | 0 | 177 mm | Ok | Fredericton in June |
| July | 25° / 14° | 7 | 24 | 0 | 131 mm | Good | Fredericton in July |
| August | 25° / 13° | 6 | 25 | 0 | 110 mm | Perfect | Fredericton in August |
| September | 20° / 9° | 6 | 24 | 0 | 115 mm | Good | Fredericton in September |
| October | 13° / 4° | 7 | 23 | 1 | 124 mm | Bad | Fredericton in October |
| November | 5° / -1° | 7 | 16 | 7 | 138 mm | Awful | Fredericton in November |
| December | -1° / -7° | 7 | 10 | 13 | 182 mm | Awful | Fredericton in December |