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Weather extremes
How extreme does Keflavík's weather get?
The hottest, coldest, wettest and snowiest days Keflavík 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 Keflavík has recorded — each shown against what a normal day that time of year looks like.
That is about 82°F hotter than a normal March afternoon in Keflavík (typical high near 38°F).
The three most extreme on record
About 33°F colder than a normal March night in Keflavík (typical low near 29°F).
The three most extreme on record
More rain in a single day than Keflavík usually gets in the whole month of March (typical March total about 4.3 in).
The three most extreme on record
Close to a whole typical December's snow in one day (Keflavík averages about 12 in across the month).
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.
Keflavík's record heat sits well above even a hot day for the season — March's 120°F is about 82°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 5 km from the city centre. The underlying daily records come from NOAA's global station network.