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Weather extremes

How extreme does Andover's weather get?

The hottest, coldest, wettest and snowiest days Andover 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 Middle Wallop station 9 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 Andover has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
95°F Jul 19, 2022

That is about 23°F hotter than a normal July afternoon in Andover (typical high near 72°F).

The three most extreme on record

1 95°F Jul 19, 2022recent
2 95°F Jul 18, 2022
3 95°F Jul 19, 2006
❄️ Coldest night
14°F Feb 7, 1991

About 21°F colder than a normal February night in Andover (typical low near 35°F).

The three most extreme on record

1 14°F Feb 7, 1991
2 14°F Dec 20, 1999
3 14°F Feb 11, 2012
🌧️ Most rain in one day
2.36 in Jun 28, 2017

More rain in a single day than Andover usually gets in the whole month of June (typical June total about 1.9 in).

The three most extreme on record

1 2.36 in Jun 28, 2017
2 2.17 in Dec 24, 2013
3 1.77 in Nov 6, 2000

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 95°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Andover's record heat sits well above even a hot day for the season — July's 95°F is about 23°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, Andover's warmest days reach the low 70s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 95°F and as low as 14°F. A single day has delivered over 2 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 Middle Wallop, a weather station, about 9 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →