How extreme does Cao Bằng's weather get?

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

Based on 33 years of daily weather observations (1992–present), from the Cao Bang 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 Cao Bằng has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

113°F Jul 27, 1996

That is about 22°F hotter than a normal July afternoon in Cao Bằng (typical high near 91°F).

The three most extreme on record

1 113°F Jul 27, 1996

2 105°F May 3, 2012

3 104°F May 1, 2012

❄️ Coldest night

27°F Jan 1, 1995

About 25°F colder than a normal January night in Cao Bằng (typical low near 52°F).

The three most extreme on record

1 27°F Jan 1, 1995

2 32°F Dec 24, 1999

3 33°F Jan 23, 2014

🌧️ Most rain in one day

13.39 in Jul 29, 1994

More rain in a single day than Cao Bằng usually gets in the whole month of July (typical July total about 9.4 in).

The three most extreme on record

1 13.39 in Jul 29, 1994

2 9.06 in Jun 14, 1994

3 7.09 in May 31, 2006

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.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Cao Bằng's record heat sits well above even a hot day for the season — July's 113°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, Cao Bằng's warmest days reach the low 90s°F and its coldest nights drop to the low 50s°F. But across the record it has gone as high as 113°F and as low as 27°F. A single day has delivered over 13 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 28 years of daily observations at Cao Bang, a weather station, inside the city. The underlying daily records come from NOAA's global station network.

How we build these numbers →

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