📒 Observation table — May 2026 Full weather archive →
| Date | Day | Morning t° | Day t° | Phenomena | Wind | Pressure | Humidity | My observations ✏️ |
|---|---|---|---|---|---|---|---|---|
| May 1 | Fri | +8° | +19° | ☀️ clear | 1.4 m/s | 730 mmHg | 44% | |
| May 2 | Sat | +10° | +22° | ☁️ overcast | 0.4 m/s | 728 mmHg | 44% | |
| May 3 | Sun | +12° | +22° | ⛅ cloudy | 0.6 m/s | 723 mmHg | 35% | |
| May 4 | Mon | +12° | +21° | ☁️ overcast | 1.4 m/s | 722 mmHg | 43% | |
| May 5 | Tue | +10° | +16° | ⛅ cloudy | 1.3 m/s | 719 mmHg | 71% | |
| May 6 | Wed | +11° | +12° | 🌧 rain | 4.7 m/s | 718 mmHg | 83% | |
| May 7 | Thu | +10° | +15° | 🌦 drizzle | 1.8 m/s | 723 mmHg | 70% | |
| May 8 | Fri | +9° | +18° | ⛅ cloudy | 1 m/s | 723 mmHg | 56% | |
| May 9 | Sat | +12° | +21° | ☀️ clear | 2.1 m/s | 724 mmHg | 51% | |
| May 10 | Sun | +13° | +20° | ☁️ overcast | 1.6 m/s | 719 mmHg | 55% | |
| May 11 | Mon | +12° | +13° | 🌧 rain | 3.8 m/s | 718 mmHg | 81% | |
| May 12 | Tue | +5° | +10° | 🌦 drizzle | 2.9 m/s | 724 mmHg | 61% | |
| May 13 | Wed | +8° | +14° | ⛅ cloudy | 4.8 m/s | 719 mmHg | 49% | |
| May 14 | Thu | +8° | +9° | 🌦 drizzle | 4 m/s | 714 mmHg | 84% | |
| May 15 | Fri | +7° | +10° | 🌦 drizzle | 1.5 m/s | 715 mmHg | 77% | |
| May 16 | Sat | +7° | +10° | 🌦 drizzle | 3.3 m/s | 721 mmHg | 69% | |
| May 17 | Sun | +8° | +14° | ☁️ overcast | 0.6 m/s | 724 mmHg | 50% | |
| May 18 | Mon | +10° | +12° | 🌦 drizzle | 3.8 m/s | 725 mmHg | 81% | |
| May 19 | Tue | +9° | +17° | ☁️ overcast | 1.1 m/s | 727 mmHg | 54% | |
| May 20 | Wed | +12° | +19° | 🌦 drizzle | 2.3 m/s | 731 mmHg | 64% | |
| May 21 | Thu | +12° | +22° | ⛅ cloudy | 2.9 m/s | 733 mmHg | 53% | |
| May 22 | Fri | +14° | +24° | ⛅ cloudy | 1.3 m/s | 733 mmHg | 49% | |
| May 23 | Sat | +15° | +26° | ☀️ clear | 1.1 m/s | 733 mmHg | 46% | |
| May 24 | Sun | +17° | +28° | ☀️ clear | 3.8 m/s | 734 mmHg | 38% | |
| May 25 | Mon | +18° | +29° | ⛅ cloudy | 1.3 m/s | 735 mmHg | 41% | |
| May 26 | Tue | +19° | +29° | ☀️ clear | 0.5 m/s | 733 mmHg | 41% | |
| May 27 | Wed | +19° | +29° | 🌦 drizzle | 1.3 m/s | 730 mmHg | 37% | |
| May 28 | Thu | +19° | +27° | ☀️ clear | 3.3 m/s | 730 mmHg | 36% | |
| May 29 | Fri | +17° | +27° | ⛅ cloudy | 3 m/s | 731 mmHg | 33% | |
| May 30 | Sat | +16° | +26° | ☁️ overcast | 0.6 m/s | 728 mmHg | 41% | |
| May 31 | Sun | +19° | +26° | 🌦 drizzle | 2.9 m/s | 725 mmHg | 46% |
🧑🏫 How to keep a weather diary
- Pick an observation time — the same every day, for example 8:00 and 14:00.
- Write down the temperature — from the thermometer outside or from our table (weather-station data).
- Note the phenomena — clear ☀️, cloudy ⛅, overcast ☁️, rain 🌧, thunderstorm ⛈, snow ❄️.
- Add wind and pressure — for younger students “light/strong” is enough, older students write m/s and mmHg.
- Sum up at the end of the month — the warmest and coldest day, how many days had precipitation. Check yourself against the weather archive.
❓ Frequently asked questions
What do you write in a school weather diary?
The date, morning and daytime temperature, phenomena (clear/cloudy/rain), wind and pressure. For younger students temperature and phenomena are enough, older students add wind in m/s, pressure and humidity. Ready values for Knonau are already filled into the table above (31 days filled).
Where do I get the data if I missed a day or a month?
Past days in the table are filled with actual weather-station readings for Knonau. Previous months — via the ← arrow or the month list above the table, earlier ones — in the weather archive. Weather archive →
How do I print a blank template?
Click “Blank sheet (fill in by hand)” — a separate page opens with an empty table (dates and weekdays stay), with a “Print” button on it.
Weather diary in Knonau — in detail
A weather diary is a table of daily observations: air temperature, precipitation, wind, atmospheric pressure and cloud cover. Schoolchildren keep it for science and geography classes, and so do gardeners and anglers. Data for Knonau is filled in automatically from weather-station readings: past days always contain facts, not forecasts, so you can check your own records against the table.
May in Knonau. Compare your records with the city archive and climate, see the current weather on the city page, the forecast — for the week. All cities — in the weather diary by city.