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Weather extremes

How extreme does Mount Gambier's weather get?

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

Based on 50+ years of daily weather observations (1971–present), from the Mount Gambier Post Office 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 Mount Gambier has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
111°F Jan 16, 2014

That is about 33°F hotter than a normal January afternoon in Mount Gambier (typical high near 78°F).

The three most extreme on record

1 111°F Jan 16, 2014
2 111°F Jan 24, 2019
3 110°F Dec 31, 2007
❄️ Coldest night
27°F Jun 10, 2006

About 14°F colder than a normal June night in Mount Gambier (typical low near 41°F).

The three most extreme on record

1 27°F Jun 10, 2006
2 27°F Jun 16, 2007
3 28°F Jun 3, 2017
🌧️ Most rain in one day
3.24 in Jan 13, 2011

More rain in a single day than Mount Gambier usually gets in the whole month of January (typical January total about 1.3 in).

The three most extreme on record

1 3.24 in Jan 13, 2011
2 2.94 in Dec 12, 2008
3 2.70 in Nov 3, 2007

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 111°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Mount Gambier's record heat sits well above even a hot day for the season — January's 111°F is about 33°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, Mount Gambier's warmest days reach the high 70s°F and its coldest nights drop to the low 40s°F. But across the record it has gone as high as 111°F and as low as 27°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 — 1991–2020 normals computed from 17 years of daily observations at Mount Gambier Post Office, a weather station, inside the city. The underlying daily records come from NOAA's global station network.

How we build these numbers →