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Weather extremes

How extreme does Caribou's weather get?

The hottest, coldest, wettest and snowiest days Caribou 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 Caribou Wfo station 1 km away. Updated through June 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 Caribou has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
96°F May 22, 1977

That is about 33°F hotter than a normal May afternoon in Caribou (typical high near 63°F).

The three most extreme on record

1 96°F May 22, 1977
2 96°F Jun 19, 2020
3 96°F Jun 19, 2024
❄️ Coldest night
-37°F Jan 16, 2009

About 40°F colder than a normal January night in Caribou (typical low near 3°F).

The three most extreme on record

1 -37°F Jan 16, 2009
2 -33°F Jan 11, 1995
3 -33°F Jan 17, 2009
🌧️ Most rain in one day
6.67 in Aug 17, 1981

More rain in a single day than Caribou usually gets in the whole month of August (typical August total about 3.6 in).

The three most extreme on record

1 6.67 in Aug 17, 1981
2 3.81 in Jul 17, 2013
3 3.08 in Sep 6, 1979
Most snow in one day
28.6 in Mar 14, 1984

Close to a whole typical March's snow in one day (Caribou averages about 21 in across the month).

The three most extreme on record

1 28.6 in Mar 14, 1984
2 27.1 in Dec 15, 2003
3 21.1 in Apr 7, 1982

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.

-50°-30°-10°10°30°50°70°90°110° all-time high 96°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Caribou's record heat sits well above even a hot day for the season — May's 96°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, Caribou's warmest days reach the high 70s°F and its coldest nights drop to the low 0s°F. But across the record it has gone as high as 96°F and as low as −37°F. A single day has delivered over 7 inches of rain or close to 29 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 Caribou Wfo (NOAA GHCN station USW00014607), about 1 km from the city centre.

How we build these numbers →