Longest Consecutive Frost Run in Aberdeen-Mannofield-Resr

Updated: 2026-08-01

When we talk about a frost day at the Met Office station at Aberdeen-Mannofield, we mean a calendar day where the minimum temperature drops below 0 °C. The question is, how many such days can string together in a row? For this city in north-east Scotland, the record is a 15-day stretch that began on 18 February 1986 and held until 4 March 1986 inclusive.

That sequence remains unbroken in the station's record to this day — no later winter has matched it in the more than two decades since. It speaks to a remarkably settled cold spell: the kind of weather where a high-pressure system parks itself, clear night skies radiate heat away, and the temperature simply never recovers.

The station's data span from 2 January 1912 through 1 December 2008, nearly a century of winters. Within that period, the top five frost runs tell a story of which winters truly earned their reputation. All five notable episodes cluster between late January and early March — the heart of the Scottish winter.

The five longest frost runs on record

These are the occasions when the cold really dug in, day after day. The table lists the start date, end date, and the total number of consecutive frost days.

The 1986 run stands alone at the top, but three other winters reached 14 days — 1981, 1978, and 1970. The December 1981 episode is noteworthy for timing: it struck mid-winter, rather than in the late-season surge most other records show. And the 1963 event, with its 13-day run, belongs to the famously severe winter of that year, which still looms large in Scottish weather folklore.

A frost run isn't just about the morning thermometer readout. In practical terms, each consecutive frost day means ice persisting on untreated roads and paths, frozen ground that disrupts excavation or gardening, and pipes under greater strain. For agriculture, a prolonged spell of minimum temperatures below zero — particularly one extending into March — can damage early flowering plants and delay spring sowing. The 1986 case has all the hallmarks of a classic "black freeze" without protective snow cover.

Look at the pattern across these records: they cluster in February and early March, not in deepest winter. That is typical of Scotland's maritime climate, where the coldest nights often come once continental influences push in during late winter, rather than during the shortest days of December. The single December exception, in 1981, reminds us that the atmosphere does not always read the calendar.

What the record does — and does not — show

Keep in mind that these are consecutive days, not the total number of frost days in a season. A winter with many frost nights scattered across several weeks might be colder overall, but it doesn't register here. The record specifically captures persistence — the ability of a cold spell to lock in place without interruption.

It is worth noting that the station's series begins in January 1912. While that gives us nearly a century of observations, it also means any frost run that might have occurred in earlier decades is simply outside the analysed period. The record of 15 days is thus the longest verified sequence in the station's complete historical record, from its first reading to its last.

For residents of Aberdeen-Mannofield and the surrounding area, this record offers a scale against which to judge current winters. No season since 1986 has produced a longer run of continuous frost, even as seasonal expectations have shifted. Whether future winters might bracket that 15-day streak remains an open question — one that only continued observation will answer.

Source: Met Office MIDAS (Integrated Data Archive System), station aberdeen-mannofield-resr. Period analysed: 2 January 1912 – 1 December 2008. Data held at CEDA under the Open Government Licence (OGL v3.0).

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