Wales · The local snow archive
When was the last white Christmas in Undy?
Our 1991–2024 reconstruction has no year meeting the Christmas snow threshold for Undy. That does not prove snow never fell: the model estimates falling snow on 24 or 25 December and ends in 2024.
See Undy’s Christmas 2026 forecast →Latest modelled snow year
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0 of 34 Christmases meet the reconstruction’s threshold.
Archive: 1991–2024.
One town. 34 Christmases.
Undy’s Christmas snow timeline
Reconstructed from local HadUK-Grid temperature and rainfall at 1 km resolution. Highlighted years meet a modelled snow-signal threshold for Christmas Eve or Day; they do not confirm observed snowfall.
Modelled history
Estimated falling snow on Christmas Eve or Day
0of 34
1990s
2000s
2010s
2020s
Years flagged: None in this reconstruction.
How the reconstruction works →A separate piece of evidence
Christmas Day snow on the ground
Lyneham · about 57 km away · 145 m elevation. NOAA snow-depth observations on 25 December, independent of our snow model.
Latest positive record: 2010 · 30 mm of snow.
| Christmas | Snow depth |
|---|---|
| 2010 | 30 mm |
| 2009 | 0 mm |
| 2008 | 0 mm |
| 2007 | 0 mm |
| 2006 | 0 mm |
| 2005 | 0 mm |
| 2004 | 0 mm |
| 2003 | 0 mm |
| 2002 | 0 mm |
| 2001 | 0 mm |
| 2000 | 0 mm |
| 1999 | 0 mm |
20 recorded Christmases across 1991–2010; 0 missing years within that span. Weather at this station may differ from Undy. A positive depth does not prove fresh snowfall on the day.
Source: NOAA/NCEI GHCN-D →Frequently asked questions
- When was the last white Christmas in Undy?
- Our 1991–2024 reconstruction has no year meeting the Christmas snow threshold for Undy. That does not prove snow never fell: the model estimates falling snow on 24 or 25 December and ends in 2024.
- Was there snow on the ground near Undy on Christmas Day?
- The latest positive Christmas Day snow-depth observation in our Lyneham station archive is 2010, with 30 mm. The station is about 57 km from Undy. Its 20 recorded Christmases span 1991–2010, with possible gaps; these are station observations, not a town-wide record.
- How many white Christmases has Undy had?
- Our reconstruction flags 0 of 34 Christmases in 1991–2024 for possible falling snow on 24 or 25 December. This modelled count is different from the calibrated long-range probability of 1%, and is not a tally of officially verified white Christmases.
- Why does the snow history end in 2024?
- That is the end of the currently processed HadUK-Grid model archive. Later years are not assumed snow-free. Nearby station observations have a separate coverage period and may extend further.