On This Day Weather - History

Was it sunny the day you were born? Did it rain on your wedding day? On This Day Weather looks up the weather, temperature, rain and snow for any day from 1940 to a few days ago, anywhere in the world, hour by hour.

The data is ERA5 from the EU's Copernicus programme: hourly weather rebuilt on a global grid of about 0.25° (25–30 km), the same data climate researchers use.

【KEY FEATURES】

■ Any day since 1940, anywhere
Pick a date and a place to see the high and low, precipitation, sunshine hours, wind and an estimated condition (sunny, cloudy, rain, snow). Swipe to step to the day before or after, and see how the day compares with the same date this year.

■ Hourly chart and your birth time
Temperature and precipitation on one chart, plus an hourly table. Choose a time to see that hour's temperature, condition, rain, humidity and wind: "born at 2 pm, and it was raining".

■ Sunrise, sunset and the moon
Sunrise and sunset times for that place and day, and the moon phase.

■ This date, every year
The same date year by year, with a temperature chart. Sort by newest, hottest, coldest or wettest; tap a year to open that day. Free shows the last 5 years; Premium shows every year since 1940 with stats and records.

■ Difference from normal and rank (Premium)
Compare the day with the 1991–2020 normal and see whether it was one of the hottest, coldest or wettest since 1940.

■ Anniversaries
Save birthdays, weddings and other special days with a date, place and optional time. They are listed by what comes next, each with the weather of the original day and a countdown.

■ Reminders and widget (Premium)
A notification the day before or on the day, at a time you choose, and a home screen widget counting down to the next anniversary, both with the weather of the original day.

■ Postcard-style share cards
Turn the day's weather into a postcard with a postmark and stamp, then share it or save it to your photos. Five designs, square or 9:16 for stories, and an editable headline.

■ Compare two days or places (Premium)
Put two dates or two places side by side: your birthday and your sibling's, or home and a trip.

■ Weather over a period (Premium)
Up to 14 days, day by day, with a count of sunny, cloudy, rainy and snowy days.

■ CSV export and color themes (Premium)
Export hourly, every-year or period values to CSV for spreadsheets, and change the app's colors.

■ Places, units and local time
Search by name, use your location, pick a point on the map or reuse a recent place. °C or °F, mm or inches, wind in km/h, m/s, mph or knots. Days follow the local time of the place, including daylight-saving days.

■ Offline and backup
Days you have opened open without a connection. Anniversaries and recent places can be backed up to a file, or to a folder once a day.

【FREE AND PREMIUM】
Every day since 1940 is free to look up, with hourly weather, sunrise and moon, the last 5 years of this date, up to 3 anniversaries, a share card (one design, square), offline viewing and backup.

Premium is a single purchase that unlocks every Premium feature. It is not a subscription: no monthly payments.

【GOOD TO KNOW】
ERA5 has no "sunny" or "rain" value, so the condition is estimated from precipitation and daytime cloud and marked "estimated". Values are for a grid cell, not a weather station, so mountains and coasts can differ from local records. New data arrives a few days late; unpublished days are never guessed.

【PRIVACY】
No account needed. Anniversaries, places and settings stay on your device. A place search sends only the words you type, and your location is used only when you ask for it.

【DATA SOURCES】
Contains modified Copernicus Climate Change Service information (ERA5). Weather data from Open-Meteo.com (CC BY 4.0). Map: OpenFreeMap (OpenMapTiles, OpenStreetMap).

Available in 40 languages.