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Weather extremes

How extreme does Phayao's weather get?

The hottest, coldest, wettest and snowiest days Phayao 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 Phayao station 2 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 Phayao has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
110°F Apr 14, 1992

That is about 14°F hotter than a normal April afternoon in Phayao (typical high near 96°F).

The three most extreme on record

1 110°F Apr 14, 1992
2 109°F May 8, 2002
3 107°F Apr 27, 2016
❄️ Coldest night
33°F Dec 26, 1993

About 25°F colder than a normal December night in Phayao (typical low near 58°F).

The three most extreme on record

1 33°F Dec 26, 1993
2 37°F Dec 25, 1999
3 37°F Dec 27, 1999
🌧️ Most rain in one day
5.39 in Sep 23, 2024

About 68% of a typical September's rain in a single day (Phayao averages roughly 8.0 in across the month).

The three most extreme on record

1 5.39 in Sep 23, 2024recent
2 5.35 in May 16, 2017
3 5.26 in Aug 12, 2005

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

Phayao's record heat sits well above even a hot day for the season — April's 110°F is about 14°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, Phayao's warmest days reach the mid-90s°F and its coldest nights drop to the high 50s°F. But across the record it has gone as high as 110°F and as low as 33°F. A single day has delivered over 5 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 Phayao, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →