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Weather extremes

How extreme does Terni's weather get?

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

Based on 34 years of daily weather observations (1991–present), from the Rieti station 24 km away. Updated through August 2025 — 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 Terni has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
104°F Jul 1, 2012

That is about 17°F hotter than a normal July afternoon in Terni (typical high near 87°F).

The three most extreme on record

1 104°F Jul 1, 2012
2 104°F Aug 3, 2017
3 104°F Aug 4, 2017
❄️ Coldest night
7°F Feb 14, 2012

About 30°F colder than a normal February night in Terni (typical low near 37°F).

The three most extreme on record

1 7°F Feb 14, 2012
2 9°F Jan 17, 2002
3 14°F Jan 24, 1991
🌧️ Most rain in one day
0.08 in Jul 18, 1993

More rain in a single day than Terni usually gets in the whole month of July (typical July total about 0.0 in).

Top recorded days

1 0.08 in Jul 18, 1993

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.

-10°10°30°50°70°90°110°130° all-time high 104°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Terni's record heat sits well above even a hot day for the season — July's 104°F is about 17°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, Terni's warmest days reach the high 80s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 104°F and as low as 7°F. A single day has delivered over 0 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 — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Viterbo, about 50 km from the city centre.

How we build these numbers →