How extreme does Keene's weather get?

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

Based on 19 years of daily weather observations (2006–present), from the Dillant-Hopkins Airport station 4 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 Keene has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

102°F Jul 1, 2018

The three most extreme on record

1 102°F Jul 1, 2018

2 102°F Jul 2, 2018

3 97°F Jul 4, 2018

❄️ Coldest night

-24°F Jan 24, 2011

The three most extreme on record

1 -24°F Jan 24, 2011

2 -22°F Jan 16, 2009

3 -22°F Jan 7, 2018

🌧️ Most rain in one day

7.05 in Sep 2, 2006

The three most extreme on record

1 7.05 in Sep 2, 2006

2 6.92 in Jul 3, 2009

3 5.81 in Mar 9, 2011

In plain terms

Across the record, Keene has reached as high as 102°F and as low as −24°F. A single day has delivered over 7 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 — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Amherst (NOAA GHCN station USC00190120), about 64 km from the city centre.

How we build these numbers →

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