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Weather extremes

How extreme does Arendal's weather get?

The hottest, coldest, wettest and snowiest days Arendal 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 Torungen Fyr station 9 km away. Updated through May 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 Arendal has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
85°F Jun 28, 1995

That is about 22°F hotter than a normal June afternoon in Arendal (typical high near 63°F).

The three most extreme on record

1 85°F Jun 28, 1995
2 84°F Aug 11, 1975
3 83°F Jul 28, 1975
❄️ Coldest night
-2°F Jan 10, 1987

About 33°F colder than a normal January night in Arendal (typical low near 31°F).

The three most extreme on record

1 -2°F Jan 10, 1987
2 -2°F Jan 11, 1987
3 0°F Jan 8, 1982
🌧️ Most rain in one day
3.58 in Oct 24, 2022

About 80% of a typical October's rain in a single day (Arendal averages roughly 4.5 in across the month).

The three most extreme on record

1 3.58 in Oct 24, 2022recent
2 3.39 in Aug 27, 1986
3 3.32 in Nov 1, 1991

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°110° all-time high 85°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Arendal's record heat sits well above even a hot day for the season — June's 85°F is about 22°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, Arendal's warmest days reach the high 60s°F and its coldest nights drop to the low 30s°F. But across the record it has gone as high as 85°F and as low as −2°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 30 years of daily observations at Torungen Fyr, a weather station, about 9 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →