Will there be snow in Ylläs in May?
Snow on the ground is about as likely as not on a typical May day in Ylläs.
Historical35 winters of station records
See the live outlook for YlläsSnow Score for May
Confidence: Low
31 / 100
Poor
Likely range
8–60
Scores seen in the middle 8 winters out of 10.
0–25 cm
Average snow depth over the month: the range seen in 8 winters out of 10.
How deep the snow gets varies a lot from winter to winter in this month.
What goes into the score
Five measured things, weighted by how much they matter for a snowy trip. All of them come from past winters, not from a forecast.
Snow on the ground
Share of days with at least 1 cm of snow.
33%
Deep snow
Share of days with at least 20 cm of snow.
20%
Fresh snowfall
Chance of at least one day of fresh snowfall in the month.
39%
Cold days
Share of days when the highest temperature stays below 0 °C.
3%
Rainy days
Share of days with measurable rain (0.5 mm or more).
30%
Typical snow depth
Average snow depth over the month: the range seen in 8 winters out of 10.
0–25 cm
Historical35 winters of station records
Where the snow is measured
Natural snow at Kolari Kattilamaa, 22 km from Ylläs: a weather station that can be several kilometres from the slopes.
Resort slopes can hold more or less snow than this weather station, so use this as a guide to the season, not a promise.
Questions about May in Ylläs
Will there be snow in Ylläs in May?
Snow on the ground is about as likely as not on a typical May day in Ylläs. Snow covers the ground on about 33% of May days, and the Snow Score is 31 out of 100 (poor).
How much snow is there in Ylläs in May?
Typically 0–25 cm. Average snow depth over the month: the range seen in 8 winters out of 10.
How often does it stay below freezing all day in Ylläs in May?
On 3% or less of May days the highest temperature stays below 0 °C.
Where do these numbers come from?
35 winters of weather-station records are used for May; winters with gaps in that month's snow record are left out. The main station is Kolari Kattilamaa, 22 km from Ylläs. Over the full record of 35 winters, snow depth comes from Kolari Kattilamaa (29 winters) and other nearby Finnish Meteorological Institute stations (6 winters). It is a historical estimate, not a weather forecast, and it describes a weather station rather than the slopes.