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Beyond the Forecast

August 10 in Cincinnati

Weather forecasts run out after about two weeks. For any date further out than that, the honest answer isn't a single number — it's the range Cincinnati actually delivers on this date, and how often.

On August 10, Cincinnati, OH typically reaches 87°F, but has run anywhere from 79°F to 94°F in eight years out of ten. About 69% of August 10s see no measurable precipitation.

Daytime high87°F
79°F8 years in 10 land in here94°F
Overnight low64°F
56°F8 years in 10 land in here71°F

The odds on August 10

69%
Dry day
No measurable precipitation
18%
90°F or hotter
Daytime high

Odds computed from the last 30 years (19962025).

This date is moving

Highs around August 10 have warmed about 0.4°F per decade since 1970 — roughly 2.1°F across the record. The figures above are shifted along that trend to 2025, so they describe today's climate rather than the average of the last 55 years.

Where this comes from: 835 daily observations from CINCINNATI MUNI AP LUNKEN FLD, covering 19702025. We pool every day within 7 days of August 10 — a single calendar date has only about 55 readings, far too few to place a 10th percentile you'd want to trust.

Why it's not a plain average: A climatology computed straight across 19702025 describes the middle of that period, not today, so as a statement about the present it runs cold. We fit a trend on year and shift each observation to 2025 before taking the range. The probabilities use the last 30 years instead — shifting a temperature along a trend is well defined, shifting “did it rain” is not.

What this is not: Not a forecast. It is what Cincinnati, OH has actually done on this date, which is the only defensible answer once you're past the two-week horizon where real forecasts stop. Data: NOAA NCEI GHCN-Daily.

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