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Weather extremes

How extreme does Olonkinbyen's weather get?

The hottest, coldest, wettest and snowiest days Olonkinbyen has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Jan Mayen station 2 km away. Updated through March 2026 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Olonkinbyen has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
64°F Jul 29, 2018

That is about 18°F hotter than a normal July afternoon in Olonkinbyen (typical high near 46°F).

The three most extreme on record

1 64°F Jul 29, 2018
2 63°F Aug 2, 2019
3 59°F Aug 11, 1985
❄️ Coldest night
-16°F Jan 11, 1979

About 39°F colder than a normal January night in Olonkinbyen (typical low near 23°F).

The three most extreme on record

1 -16°F Jan 11, 1979
2 -14°F Feb 11, 1973
3 -14°F Mar 5, 1977
🌧️ Most rain in one day
2.70 in Sep 10, 1979

About 87% of a typical September's rain in a single day (Olonkinbyen averages roughly 3.1 in across the month).

The three most extreme on record

1 2.70 in Sep 10, 1979
2 2.40 in Sep 2, 2019
3 1.66 in Jan 10, 1992

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.

-30°-10°10°30°50°70°90° all-time high 64°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Olonkinbyen's record heat sits well above even a hot day for the season — July's 64°F is about 18°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

In a normal year, Olonkinbyen's warmest days reach the mid-40s°F and its coldest nights drop to the low 20s°F. But across the record it has gone as high as 64°F and as low as −16°F. A single day has delivered over 3 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Jan Mayen, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →