How extreme does Lethem's weather get?

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

Based on 11 years of daily weather observations (2014–present), from the Lethem station. 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 Lethem has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

101°F Oct 12, 2023

The three most extreme on record

1 101°F Oct 12, 2023recent

2 100°F Sep 15, 2023

3 100°F Oct 10, 2023

❄️ Coldest night

68°F Sep 1, 2024

The three most extreme on record

1 68°F Sep 1, 2024recent

2 68°F Oct 2, 2024

3 68°F Jun 24, 2019

🌧️ Most rain in one day

3.07 in May 23, 2019

The three most extreme on record

1 3.07 in May 23, 2019

2 2.79 in Nov 3, 2022

3 2.65 in Jun 24, 2024

In plain terms

Across the record, Lethem has reached as high as 101°F and as low as 68°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 — the official 1991–2020 climate normals from INMET, Brazil's national meteorological institute, measured at Boa Vista, about 113 km from the city centre.

How we build these numbers →

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