Updated: 2026-09-08
On 28 May 1948, a minimum temperature of -0.6 °C was logged at the Rochdale station near Manchester — the latest spring frost in the entire series from 1947 to 2025. The same date repeated in 1961, also with -0.6 °C. For anyone planting tender blossom or fruit trees, that is the reference date: a frost can occur unusually late in this part of northwest England, well into the last week of May.
Gardeners and orchard keepers in Greater Manchester know the anxiety of a clear, still April night after a warm spell. The data from the Met Office, recorded at Rochdale station, shows why that caution is justified. Across nearly eight decades of daily readings, the last frost of the cold season has fallen on 28 May twice — 1948 and 1961. But those are the extremes; the full picture is more nuanced, and the risk is concentrated in a window that runs through March, April and most of May.
A "frost day" here means any day when the minimum temperature dropped below 0 °C. Using the long-term Met Office MIDAS record, we can trace the last such day for each year, the monthly frequency of frost days across the seasons, and the single most extreme cold event ever captured at this station.
The absolute minimum temperature recorded at Rochdale in the period analysed was -12.2 °C, reached on 2 January 1962. That winter chill remains the benchmark for extreme cold at this station. By the time spring arrives, the cold is far less severe, but as the late frost dates show, it can still bite at the worst moment for blossom.
The five years with the most delayed final frost all cluster in the second half of May. These are the dates that should guide planting decisions for sensitive varieties:
| Year | Last spring frost date | Minimum temperature (°C) |
|---|---|---|
| 1948 | 1948-05-28 | -0.6 |
| 1961 | 1961-05-28 | -0.6 |
| 1955 | 1955-05-21 | -1.1 |
| 1956 | 1956-05-19 | -1.7 |
| 1965 | 1965-05-20 | -1.1 |
Notably, all five of these late-frost years occurred between 1948 and 1965. Since then, no spring frost has extended beyond 14 May, suggesting that the most vulnerable window has shifted earlier in recent decades — although the data shows that frosts in May are rare but not extinct even today.
The following table lists the last frost date for every year with complete data in the series. The dates range widely: from as early as 19 March 2025 to the extreme 28 May cases. The most recent years show a distinct tendency — 2025 ended the season on 19 March, remarkably early, while 2011 and 2014 also finished before the end of March.
Table 1 — Notable years. The chart shows the complete annual series. The table lists the most notable years; the full series comes from Met Office.
| Year | Last frost date | Minimum temperature (°C) |
|---|---|---|
| 1948 | 1948-05-28 | -0.6 |
| 1950 | 1950-04-26 | -2.2 |
| 1972 | 1972-03-22 | -0.5 |
| 1973 | 1973-05-14 | -0.2 |
| 2009 | 2009-04-05 | -0.4 |
| 2018 | 2018-05-01 | -0.3 |
| 2021 | 2021-05-05 | -0.3 |
Looking at the most recent years, 2020 stands out with a frost as late as 14 May at -1.3 °C — a reminder that even in the 21st century, mid-May frosts are possible. The year 2021 also extended to 5 May. These dates matter for apple and pear orchards: a frost at -1.3 °C in mid-May can damage newly set fruit.
The table below shows the average number of frost days per month across the full period. Frost days are counted when the minimum temperature dips below 0 °C. Unsurprisingly, January leads with 11.1 frost days on average, followed closely by February with 10.0 and December with 9.3. The spring months taper off sharply: March averages 7.8, April drops to 3.4, and May has just 0.6. There is no frost in June, July or August; the first autumn frosts return in September with 0.0 average days and October with 1.2.
| Month | Average frost days |
|---|---|
| January | 11.1 |
| February | 10.0 |
| March | 7.8 |
| April | 3.4 |
| May | 0.6 |
| September | 0.0 |
| October | 1.2 |
| November | 6.5 |
| December | 9.3 |
For blossom and tender crops in the Manchester area, the practical guidance from this dataset is clear. The median last frost falls in mid-to-late April, but the tails are long. Planting out frost-sensitive plants before late May carries a measurable risk in some years — the 1948 and 1961 cases prove it. Conversely, the earliest season end on record, 19 March 2025, shows that in some springs the danger passes remarkably soon. For reliable protection, waiting until June eliminates virtually all risk, given that May averages only 0.6 frost days and no frost has been recorded in June during the entire series.
The contrast between winters and springs is striking. January alone averages more frost days (11.1) than April and May combined (3.4 plus 0.6). The cold season dominates, but the late, isolated spring frosts are precisely the ones that catch blossom at its most vulnerable stage.
Source: Met Office official data — Rochdale station. Period covered: 1947-2025.
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