# That Day's Weather — Actual weather on past days

> Actual weather on past days (iPhone/iPad app by Hironori Tsumuraya.)

- Source: https://appshunter.io/ios/app/that-days-weather/id6805507523 (this page in markdown: same URL + `.md`)
- Developer: [Hironori Tsumuraya](https://appshunter.io/developer/1061365194)
- Category: Weather, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 65 MB
- Languages: American English, Japanese
- Released: 2026-09-22
- Data updated: 2026-10-04

## What is That Day's Weather?

Do you remember the sky that day?

July 14, 1998, Fukuoka: sunny. High 29.2°C, low 21.9°C.
Give it a date and a place in Japan, and it shows you the weather that was actually observed that day.

This is not a forecast app. It's for looking back at days that have already passed.

■ For days like these

Birthdays, wedding anniversaries, the day your child was born, a trip, the day you first met.
Enter the date and place, and that day's sky appears.

For every day you save, past years on the same date are lined up year by year.
How many times it was sunny, how many times it rained, and what the average temperature was.
Recent years are free. Going back further requires an in-app purchase.

■ Today will be "that day" someday

See today's weather side by side with past years on the same date.
An ordinary today will one day be a day worth looking back on.

■ Where the weather comes from

Historical observation records published by the Japan Meteorological Agency. Not forecasts or estimates, but values recorded at weather stations on that day.
When you choose a place, the app picks the nearest station that records both temperature and sunshine.

Once fetched, the weather stays on your device, so it opens without a connection next time.

■ What it can't do

・Records are for places in Japan only. Places outside Japan have no weather
・Before 1961, sunny and cloudy can't be told apart, because sunshine records hadn't started yet. Rain and snow can still be determined from temperature and precipitation
・Some items weren't observed, and some days have no surviving record. Those days show as "Unknown"

Temperatures alone go back to the Meiji era (late 1800s) at some stations.
The temperature on the day your grandparents were born may still be on record.

■ About purchases

Recent years are free to use. Plans let you go back further, see the calendar for every month, and get stats across all years.

Choose Monthly (auto-renewing), Yearly (auto-renewing), or Lifetime (one-time purchase). Prices are shown in the store and in the app before you buy.
Auto-renewing plans renew automatically unless cancelled at least 24 hours before the end of the current period.
You can cancel in your device's store settings.

Terms of use: https://tsumuchan.notion.site/82ae7d6a0abd83ee8deb01a402addfc0
Privacy policy: https://tsumuchan.notion.site/1c4e7d6a0abd825e9b7e81fbc8e1338d

■ Your data

Your records stay on this device only. No account, no sign-in.
When you switch devices, export a file from Settings and import it on the new device.

Source: Japan Meteorological Agency website (historical weather data)

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| あの日の天気プラス（月額） | $0.99 | per month |
| あの日の天気プラス（年額） | $9.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| あの日の天気プラス（買い切り） | $22.99 | one-time |


## Is That Day's Weather safe?

Not enough ratings yet to assess That Day's Weather.

## Is That Day's Weather legit?

That Day's Weather appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for That Day's Weather is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.1.2 — 2026-10-03

Minor bug fixes and improvements.

### 1.1.1 — 2026-09-28

Minor bug fixes and improvements.

### 1.1.0 — 2026-09-25

The app is now available in English. If your device language isn't Japanese, the app is shown in English.

### 1.0.0 — 2026-09-22

No release notes.

## Apps similar to That Day's Weather

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [tenki+ - My Weather](https://appshunter.io/ios/app/tenki-plus-my-weather/id6811246770) | — | Free | Weather |
| [Past Weather History: Eranorms](https://appshunter.io/ios/app/past-weather-history-eranorms/id6757374142) | 5.0 (4) | Free | Weather |
| [Past Weathers - Weather Log](https://appshunter.io/ios/app/past-weathers-weather-log/id6474922220) | — | Free | Weather |
| [Weather with Yesterday](https://appshunter.io/ios/app/weather-with-yesterday/id6450978243) | 4.3 (6) | Free | Weather |
| [Good Weather: Past & Forecast](https://appshunter.io/ios/app/good-weather-past-and-forecast/id1658473170) | 4.1 (9) | Free | Weather |
| [東京アメッシュログ](https://appshunter.io/ios/app/id676129722) | 5.0 (1) | Free | Weather |

## More apps by Hironori Tsumuraya

- [フリマサーチ - フリマアプリを一括検索！](https://appshunter.io/ios/app/id1517256756)
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- [Quick Notion - Notionへの投稿専用アプリ](https://appshunter.io/ios/app/quick-notion-notion/id1569851996)
- [Hashtag+](https://appshunter.io/ios/app/hashtag-plus/id1639068344)
- [フリマメモ - 出品/再出品に便利な定型文テンプレ](https://appshunter.io/ios/app/id6503227047)

All apps by Hironori Tsumuraya: https://appshunter.io/developer/1061365194

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-04.*