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Weather extremes

How extreme does Three Rivers's weather get?

The hottest, coldest, wettest and snowiest days Three Rivers 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 Ash Mtn station 9 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 Three Rivers has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
118°F Jul 6, 2007

That is about 19°F hotter than a normal July afternoon in Three Rivers (typical high near 99°F).

The three most extreme on record

1 118°F Jul 6, 2007
2 116°F Jul 7, 2007
3 116°F Jul 20, 2009
❄️ Coldest night
7°F Jul 2, 1985

About 61°F colder than a normal July night in Three Rivers (typical low near 68°F).

The three most extreme on record

1 7°F Jul 2, 1985
2 17°F Dec 22, 1990
3 17°F Dec 23, 1990
🌧️ Most rain in one day
4.02 in Feb 13, 1986

About 85% of a typical February's rain in a single day (Three Rivers averages roughly 4.7 in across the month).

The three most extreme on record

1 4.02 in Feb 13, 1986
2 3.85 in Nov 9, 2002
3 3.74 in Oct 14, 2009
Most snow in one day
8.0 in Nov 28, 1975

Close to a whole typical November's snow in one day (Three Rivers averages about 0 in across the month).

The three most extreme on record

1 8.0 in Nov 28, 1975
2 6.0 in Nov 12, 1985
3 3.5 in Jan 28, 1979

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°130° all-time high 118°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Three Rivers's record heat sits well above even a hot day for the season — July's 118°F is about 19°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, Three Rivers's warmest days reach the high 90s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 118°F and as low as 7°F. A single day has delivered over 4 inches of rain or close to 8 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 — 1991–2020 normals computed from 29 years of daily observations at Ash Mtn, 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 →