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Weather extremes

Sisimiut's weather extremes

The hottest, coldest, wettest and snowiest days Sisimiut has recorded — the outer limits of what its weather can do. This station's daily record ended in 2021, so these are historical extremes from that period, not records updated to today.

Based on 21 years of daily weather observations (2000–2021), from the Mitt. Sisimiut station 2 km away. Updated through January 2021 — 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 Sisimiut has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
74°F Aug 27, 2003

That is about 19°F hotter than a normal August afternoon in Sisimiut (typical high near 55°F).

The three most extreme on record

1 74°F Aug 27, 2003
2 74°F Jul 15, 2009
3 74°F Jul 16, 2009
❄️ Coldest night
-26°F Feb 9, 2008

About 32°F colder than a normal February night in Sisimiut (typical low near 6°F).

The three most extreme on record

1 -26°F Feb 9, 2008
2 -23°F Feb 8, 2008
3 -23°F Feb 10, 2008
🌧️ Most rain in one day
3.61 in Oct 29, 2017

More rain in a single day than Sisimiut usually gets in the whole month of October (typical October total about 2.5 in).

The three most extreme on record

1 3.61 in Oct 29, 2017
2 1.94 in Jul 14, 2005
3 1.84 in Oct 30, 2008

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.

-50°-30°-10°10°30°50°70°90° all-time high 74°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Sisimiut's record heat sits well above even a hot day for the season — August's 74°F is about 19°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, Sisimiut's warmest days reach the high 50s°F and its coldest nights drop to the mid-0s°F. But across the record it has gone as high as 74°F and as low as −26°F. A single day has delivered over 4 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 19 years of daily observations at Mitt. Sisimiut, 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 →