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Weather extremes

How extreme does Morristown's weather get?

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

Based on 44 years of daily weather observations (1982–present), from the Morristown Radio Wcrk station 3 km away. Updated through May 2026 — 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 Morristown has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
103°F Jun 30, 2012

That is about 20°F hotter than a normal June afternoon in Morristown (typical high near 83°F).

The three most extreme on record

1 103°F Jun 30, 2012
2 103°F Jul 1, 2012
3 100°F Aug 23, 2007
❄️ Coldest night
-19°F Jan 21, 1985

About 46°F colder than a normal January night in Morristown (typical low near 27°F).

The three most extreme on record

1 -19°F Jan 21, 1985
2 -13°F Feb 5, 1996
3 -9°F Jan 19, 1994
🌧️ Most rain in one day
3.77 in Aug 18, 2021

More rain in a single day than Morristown usually gets in the whole month of August (typical August total about 3.3 in).

The three most extreme on record

1 3.77 in Aug 18, 2021recent
2 3.58 in Sep 27, 2009
3 3.57 in Aug 20, 1988
Most snow in one day
16.5 in Mar 13, 1993

Close to a whole typical March's snow in one day (Morristown averages about 2 in across the month).

The three most extreme on record

1 16.5 in Mar 13, 1993
2 13.0 in Feb 2, 1996
3 12.3 in Apr 3, 1987

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.

-30°-10°10°30°50°70°90°110°130° all-time high 103°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Morristown's record heat sits well above even a hot day for the season — June's 103°F is about 20°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, Morristown's warmest days reach the mid-80s°F and its coldest nights drop to the high 20s°F. But across the record it has gone as high as 103°F and as low as −19°F. A single day has delivered over 4 inches of rain or close to 17 inches of snow. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Morristown Radio Wcrk (NOAA GHCN station USC00406271), about 3 km from the city centre.

How we build these numbers →