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Weather extremes

How extreme does Teresina's weather get?

The hottest, coldest, wettest and snowiest days Teresina 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 Senador Petronio Portella station 4 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 Teresina has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
109°F May 19, 1996

That is about 17°F hotter than a normal May afternoon in Teresina (typical high near 92°F).

The three most extreme on record

1 109°F May 19, 1996
2 108°F Oct 24, 2012
3 106°F Nov 20, 2005
❄️ Coldest night
54°F Feb 29, 2000

About 21°F colder than a normal February night in Teresina (typical low near 75°F).

The three most extreme on record

1 54°F Feb 29, 2000
2 57°F Sep 16, 1991
3 59°F Jun 9, 2001
🌧️ Most rain in one day
17.60 in Apr 22, 2020

More rain in a single day than Teresina usually gets in the whole month of April (typical April total about 8.2 in).

The three most extreme on record

1 17.60 in Apr 22, 2020
2 5.91 in Jun 10, 2011
3 5.04 in Mar 28, 2021

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°50°70°90°110°130° all-time high 109°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Teresina's record heat sits well above even a hot day for the season — May's 109°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, Teresina's warmest days reach the low 100s°F and its coldest nights drop to the mid-70s°F. But across the record it has gone as high as 109°F and as low as 54°F. A single day has delivered over 18 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 Senador Petronio Portella, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →