Look up the recorded high, low, and rainfall for a destination on any past date, and compare it with the ten-year normal for the same calendar day.
Look up what a destination was actually like on a date, and how that compares with the ten-year normal for the same day.
Readings come from the destination's own local day, not yours.
Fetching 2026-08-08 and the 10-year normal for Rome.
Practical notes about the inputs, assumptions, and result.
A single prior year is noise. One unusually hot or wet day tells you nothing about what to expect. Averaging the same calendar date across ten years gives a normal you can actually plan against, and the tool shows the warmest and coldest that date has been in the window.
The destination's. The archive is requested with the destination's own timezone, so a day runs from local midnight to local midnight there rather than in your browser's zone.
The Open-Meteo historical weather API, which is built on the ECMWF ERA5 reanalysis. Values are modelled on a grid rather than measured at one station, so a nearby official station can differ, particularly in mountains or on a coast.
Not in the formal sense. The World Meteorological Organization defines climate normals over 30 years. A ten-year window is deliberately shorter so it reflects recent conditions, which is usually what a traveller wants.
This tool reads recorded weather. For a future trip, use the normal for that calendar date as your planning baseline and check a forecast closer to the time.
Other tools in travel & distance.
Price a trip for gasoline, diesel, E85, LPG, or an electric vehicle, split the cost across passengers, plan refuelling stops, and compare two vehicles side by side.
Measure the straight-line, road, and flight distance between two cities or any two coordinates, with driving estimates shown only where a road route actually exists.
Convert a wall-clock time between zones with daylight-saving-accurate offsets, see when a local time is skipped or repeated by a clock change, and find the working-hours window everyone shares.