How to Add Weather to Apple Calendar (Free, No App)

01What's new in the October 2026 update

New: 110 cities. Up from 8, with search. Canada, the US, Latin America, Europe, the Middle East, Africa, Asia and Oceania.

New: typical weather a year ahead. Past the 16-day forecast, every day shows the usual high and low for that date, marked ≈, out to 12 months. It's the 10-year average, so in October you can see what a March shoot day usually looks like.

New: one-click Google Calendar and Outlook. Pick your calendar app on the page and your city opens straight in it. No copying links.

Improved: rain chance and sunrise. Days with a 40% or higher chance of rain show it in the title. Tap any day for wind, UV, sunrise and sunset.

Improved: °F and mph for US cities. Everywhere else stays °C and km/h.

Fixed: daily updates. A GitHub setting paused the daily refresh last winter. It runs every morning again, and it now resets that setting itself so it can't pause again.

02What it looks like

Each day gets one all-day event:

☀️ 22°C/15°C: the forecast, 16 days out
🌧️ 18°C/12°C 💧70%: a 40%+ chance of rain
≈ 24°C/15°C: typical weather for that date, past day 16

The events are marked free, so they never block your schedule, and they come with no alerts.

03How to add weather to Apple Calendar

On iPhone or iPad:

1. Open climocal.johnnyhockin.com in Safari
2. Choose Apple Calendar
3. Tap your city
4. Tap Subscribe

On a Mac:

1. Open climocal.johnnyhockin.com
2. Choose Apple Calendar and click your city
3. Calendar opens. Click Subscribe
4. Set Auto-refresh to Every day, and pick iCloud as the location so it shows on your iPhone too
5. Click OK

04How to add weather to Google Calendar

1. On a computer, open ClimoCal and choose Google Calendar
2. Click your city
3. Google Calendar opens and asks to add it. Click Add

It syncs to the Google Calendar app on your phone. Google refreshes subscribed calendars on its own schedule, usually about once a day.

05How to add weather to Outlook

1. Open ClimoCal and choose Outlook
2. Click your city. Outlook on the web opens and asks you to confirm

For a work or school account, choose Something else to copy the link, then in Outlook go to Add calendar > Subscribe from web and paste it.

06Why I built this

I'm a film producer. We plan shoots months ahead, and weather decides a lot: exteriors, rain covers, whether to push the day. I wanted to glance at next Tuesday in my calendar and see if it's going to rain, without opening another app.

The first version covered the next 16 days. What I wanted most was further out, so this update adds typical weather for every day of the next year.

07The technical bit

Forecasts come from Open-Meteo (no API key). Typical weather is the 10-year average for each date from ERA5 climate data. A GitHub Action rebuilds every city's calendar each morning and publishes it on GitHub Pages, so it costs nothing to run. The code is open on GitHub.

City missing, or something broken? DM me on Instagram and I'll sort it out.