Porsgrunn, in Telemark, Norway, is home to roughly 34,400 people in the Europe/Oslo time zone at 59.1°N latitude.
Recent weather here gives a sense of typical conditions: in 2025, Porsgrunn recorded a mean annual temperature of 46°F, ranging from 1°F lows in February to 84°F highs in July, with about 48 inches of precipitation across the year.
View historical weather for Porsgrunn · More cities in Telemark