Weather in Fredrikstad in September
How warm is it in Fredrikstad in September?
In September the typical daytime high in Fredrikstad is 16.0 °C on average, from 18.0 °C at the start to 13.8 °C at the end of the month.
That is 3.4 °C cooler than in August and 4.9 °C warmer than in October.
The last 10 years were 1.3 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Faerder Fyr (31 km), Oslo Blindern (81 km) and Vanersborg (126 km); nearer ones count more.