Trøndelag region hits record-breaking March temperatures

Extreme heat in central Norway has pushed March temperatures to unprecedented levels, with local weather experts calling the surge “shocking” and unlike anything seen before, Dagbladet reports.

Meteorological data shows Trøndelag county recorded Norway’s largest temperature deviations this week, with Meråker municipality averaging 9.4°C above normal—a figure veteran weather journalist Torsten Hanssen, known as “Vær-Torsten,” described as “violent anomalies.” On Wednesday, Trondheim-Voll’s average temperature hit 9.4°C, matching typical late-May levels and 8.6°C above the March 18 norm, he noted on social media.

Overnight lows in Trondheim hovered around 10°C, while Kotsøy registered 14.5°C—the region’s highest for the day. Hanssen, a 30-year resident, told Dagbladet he had “never seen snow melt this fast, this early” in spring. The abrupt warmth follows an unusually cold winter, with January and February marking the chillest since 2010.

“It’s alarming in the context of climate change,” Hanssen said, highlighting back-to-back record March temperatures in 2025 and 2026 as “highly unusual.”

While cooler weather is forecast for late March, the first three weeks’ extremes ensure the month will likely rank as the warmest March on record for Trøndelag. The heatwave has already triggered rapid snowmelt, including in high-altitude areas typically snow-covered this time of year.

Meteorologists define spring as consecutive days with average temperatures above 0°C and rising—a threshold much of Trøndelag has now crossed.