📒 Observation table — December 2025 Full weather archive →
| Date | Day | Morning t° | Day t° | Phenomena | Wind | Pressure | Humidity | My observations ✏️ |
|---|---|---|---|---|---|---|---|---|
| December 1 | Mon | +1° | +1° | ☁️ overcast | 4.6 m/s | 756 mmHg | 96% | |
| December 2 | Tue | +1° | +2° | ☁️ overcast | 2.7 m/s | 761 mmHg | 95% | |
| December 3 | Wed | -1° | +1° | ☁️ overcast | 2.7 m/s | 763 mmHg | 90% | |
| December 4 | Thu | +1° | +2° | 🌦 drizzle | 3.4 m/s | 760 mmHg | 99% | |
| December 5 | Fri | +2° | +3° | ☁️ overcast | 2.6 m/s | 761 mmHg | 100% | |
| December 6 | Sat | +2° | +3° | ☁️ overcast | 3.2 m/s | 761 mmHg | 99% | |
| December 7 | Sun | 0° | +1° | ☁️ overcast | 4.2 m/s | 759 mmHg | 86% | |
| December 8 | Mon | 0° | +1° | ❄️ snow | 3.8 m/s | 757 mmHg | 92% | |
| December 9 | Tue | +1° | +2° | 🌦 drizzle | 6 m/s | 749 mmHg | 98% | |
| December 10 | Wed | +3° | +3° | ☁️ overcast | 3.2 m/s | 751 mmHg | 97% | |
| December 11 | Thu | +7° | +7° | ☁️ overcast | 4.9 m/s | 745 mmHg | 87% | |
| December 12 | Fri | +1° | -2° | ⛅ cloudy | 5.4 m/s | 753 mmHg | 64% | |
| December 13 | Sat | -7° | -5° | ☁️ overcast | 3.8 m/s | 763 mmHg | 77% | |
| December 14 | Sun | -6° | -6° | ☁️ overcast | 1.8 m/s | 758 mmHg | 78% | |
| December 15 | Mon | -1° | +1° | ☁️ overcast | 0.6 m/s | 751 mmHg | 95% | |
| December 16 | Tue | +3° | +3° | ☁️ overcast | 4.9 m/s | 755 mmHg | 95% | |
| December 17 | Wed | +1° | +1° | ☁️ overcast | 2.9 m/s | 757 mmHg | 97% | |
| December 18 | Thu | +1° | +3° | ☁️ overcast | 3.9 m/s | 758 mmHg | 95% | |
| December 19 | Fri | +1° | +2° | ☁️ overcast | 3.5 m/s | 759 mmHg | 97% | |
| December 20 | Sat | +1° | +2° | 🌦 drizzle | 4.9 m/s | 752 mmHg | 98% | |
| December 21 | Sun | +4° | +4° | 🌦 drizzle | 4.5 m/s | 748 mmHg | 98% | |
| December 22 | Mon | 0° | -1° | ☁️ overcast | 5.3 m/s | 757 mmHg | 73% | |
| December 23 | Tue | -9° | -6° | ☀️ clear | 4.3 m/s | 767 mmHg | 62% | |
| December 24 | Wed | -5° | -1° | ❄️ snow | 4.4 m/s | 764 mmHg | 85% | |
| December 25 | Thu | -1° | +1° | ❄️ snow | 6.9 m/s | 757 mmHg | 98% | |
| December 26 | Fri | +1° | +2° | ⛅ cloudy | 5.3 m/s | 753 mmHg | 74% | |
| December 27 | Sat | -3° | 0° | ☁️ overcast | 5 m/s | 742 mmHg | 96% | |
| December 28 | Sun | 0° | 0° | ❄️ snow | 5 m/s | 741 mmHg | 93% | |
| December 29 | Mon | -8° | -2° | ❄️ snow | 3.6 m/s | 736 mmHg | 91% | |
| December 30 | Tue | -7° | -6° | ❄️ snow | 4.4 m/s | 736 mmHg | 90% | |
| December 31 | Wed | -6° | -8° | ❄️ snow | 4.9 m/s | 741 mmHg | 87% |
🧑🏫 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 Rno 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 Rno. 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 Rno — 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 Rno 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.
December in Rno. 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.