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Weather extremes
How extreme does Selfoss's weather get?
The hottest, coldest, wettest and snowiest days Selfoss has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.
The four kinds of extreme
The hottest, coldest, wettest and snowiest single days Selfoss has recorded — each shown against what a normal day that time of year looks like.
That is about 23°F hotter than a normal July afternoon in Selfoss (typical high near 59°F).
The three most extreme on record
About 35°F colder than a normal December night in Selfoss (typical low near 27°F).
The three most extreme on record
The three most extreme on record
How hot and cold it gets, month by month
The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.
Selfoss's record heat sits well above even a hot day for the season — July's 82°F is about 23°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.
In plain terms
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 11 years of daily observations at Keflavik, a weather station, about 78 km from the city centre. The underlying daily records come from NOAA's global station network.