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Weather extremes

How extreme does Ennis's weather get?

The hottest, coldest, wettest and snowiest days Ennis 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 Shannon station 16 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 Ennis has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
90°F Jun 28, 2018

That is about 24°F hotter than a normal June afternoon in Ennis (typical high near 65°F).

The three most extreme on record

1 90°F Jun 28, 2018
2 88°F Jun 29, 2018
3 88°F Jun 27, 2018
❄️ Coldest night
12°F Dec 25, 2010

About 27°F colder than a normal December night in Ennis (typical low near 39°F).

The three most extreme on record

1 12°F Dec 25, 2010
2 12°F Jan 9, 2010
3 12°F Dec 23, 2010
🌧️ Most rain in one day
11.66 in Oct 21, 2002

More rain in a single day than Ennis usually gets in the whole month of October (typical October total about 4.1 in).

The three most extreme on record

1 11.66 in Oct 21, 2002
2 7.64 in Sep 20, 2006
3 4.57 in Feb 9, 2020

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°10°30°50°70°90°110° all-time high 90°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Ennis's record heat sits well above even a hot day for the season — June's 90°F is about 24°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, Ennis's warmest days reach the high 60s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 90°F and as low as 12°F. A single day has delivered over 12 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 Shannon, a weather station, about 16 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →