How extreme does Rosemount's weather get?

The hottest, coldest, wettest and snowiest days Rosemount 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 Rosemount Rsch & Outreach Ctr station 3 km away. Updated through April 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 Rosemount has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

105°F Jul 31, 1988

That is about 24°F hotter than a normal July afternoon in Rosemount (typical high near 81°F).

The three most extreme on record

1 105°F Jul 31, 1988

2 103°F Aug 1, 1988

3 103°F Aug 2, 1988

❄️ Coldest night

-38°F Jan 9, 1977

About 41°F colder than a normal January night in Rosemount (typical low near 3°F).

The three most extreme on record

1 -38°F Jan 9, 1977

2 -37°F Feb 2, 1996

3 -33°F Jan 15, 1972

🌧️ Most rain in one day

30.00 in Jun 23, 1982

More rain in a single day than Rosemount usually gets in the whole month of June (typical June total about 4.9 in).

The three most extreme on record

1 30.00 in Jun 23, 1982

2 5.80 in Jul 24, 1987

3 5.47 in Jun 5, 1994

⛄ Most snow in one day

12.0 in Dec 28, 1982

The three most extreme on record

1 12.0 in Dec 28, 1982

2 12.0 in Jan 20, 1988

3 12.0 in Nov 1, 1991

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.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Rosemount's record heat sits well above even a hot day for the season — July's 105°F is about 24°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, Rosemount's warmest days reach the low 80s°F and its coldest nights drop to the low 0s°F. But across the record it has gone as high as 105°F and as low as −38°F. A single day has delivered over 30 inches of rain or close to 12 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 Farmington 3nw (NOAA GHCN station USC00212737), about 9 km from the city centre.

How we build these numbers →

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