The highest day temperature in August 2026 was 99°F. The lowest night temperature was 51°F. The average values for day and night temperatures during August were 82.2°F и 62.2°F respectivly.

You can expect various weather conditions during August. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in August for Fredericton is 1.5 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 5.9 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Fredericton in August is 7.6 hours.