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Weather extremes

How extreme does Heroica Guaymas's weather get?

The hottest, coldest, wettest and snowiest days Heroica Guaymas 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 General Jose Maria Yanez Intl / Guaymas Intl station 6 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 Heroica Guaymas has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
118°F Jun 13, 2024

That is about 22°F hotter than a normal June afternoon in Heroica Guaymas (typical high near 95°F).

The three most extreme on record

1 118°F Jun 13, 2024recent
2 113°F Sep 6, 2020
3 113°F Jun 12, 2024
❄️ Coldest night
34°F Dec 30, 2003

About 19°F colder than a normal December night in Heroica Guaymas (typical low near 53°F).

The three most extreme on record

1 34°F Dec 30, 2003
2 36°F Dec 16, 1992
3 36°F Dec 21, 1996
🌧️ Most rain in one day
8.98 in Nov 6, 1995

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

The three most extreme on record

1 8.98 in Nov 6, 1995
2 7.99 in Feb 13, 1995
3 7.99 in Sep 1, 1996

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 118°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Heroica Guaymas's record heat sits well above even a hot day for the season — June's 118°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, Heroica Guaymas's warmest days reach the high 90s°F and its coldest nights drop to the low 50s°F. But across the record it has gone as high as 118°F and as low as 34°F. A single day has delivered over 9 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 29 years of daily observations at General Jose Maria Yanez Intl / Guaymas Intl, a weather station, about 6 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →