Chance of Wrong · forecast accuracy

Daily forecast vs actual

Actual high/low are only recorded after the local calendar day has ended (so mid-day partial highs never appear as final). When our hourly samples are sparse, extremes are backfilled from Xweather historical conditions. Forecast values are from the earliest snapshot that already covers a full local day of hourly temps (morning low and afternoon high), collected before that date begins — not the first overnight hour at the far edge of the rolling hourly window, and not evening snapshots after the peak has already occurred. Evolution charts freeze the high/low once observations have recorded the extreme, so leftover evening hours do not skew the series. Click a date to open that city’s daily high/low forecast evolution charts.