Monthly weather forecast in Bonn
| Sunday | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday |
|---|---|---|---|---|---|---|
| 3 December, Sunday. day, 4°; night, 3°; rain | 4 December, Monday. day, 5°; night, 3°; rain | 5 December, Tuesday. day, 6°; night, 4°; rain | 6 December, Wednesday. day, 6°; night, 2°; sleet | 7 December, Thursday. day, 5°; night, 2°; overcast | 8 December, Friday. day, 6°; night, 6°; sleet | 9 December, Saturday. day, 9°; night, 9°; rain |
| 10 December, Sunday. day, 11°; night, 10°; light rain | 11 December, Monday. day, 11°; night, 8°; light rain | 12 December, Tuesday. day, 10°; night, 8°; light rain | 13 December, Wednesday. day, 8°; night, 6°; light rain | 14 December, Thursday. day, 7°; night, 4°; light rain | 15 December, Friday. day, 6°; night, 3°; overcast | 16 December, Saturday. day, 7°; night, 5°; overcast |
| 17 December, Sunday. day, 9°; night, 6°; light rain | 18 December, Monday. day, 8°; night, 5°; overcast | 19 December, Tuesday. day, 9°; night, 9°; partly cloudy | 20 December, Wednesday. day, 9°; night, 6°; partly cloudy | 21 December, Thursday. day, 6°; night, 5°; partly cloudy | 22 December, Friday. day, 5°; night, 1°; overcast | 23 December, Saturday. day, 3°; night, -1°; partly cloudy |
| 24 December, Sunday. day, 4°; night, 4°; partly cloudy | 25 December, Monday. day, 5°; night, 5°; partly cloudy | 26 December, Tuesday. day, 5°; night, 4°; partly cloudy | 27 December, Wednesday. day, 7°; night, 8°; partly cloudy | 28 December, Thursday. day, 8°; night, 3°; partly cloudy | 29 December, Friday. day, 5°; night, -1°; mostly clear | 30 December, Saturday. day, 6°; night, 1°; clear |
| 31 December, Sunday. day, 7°; night, 1°; clear | 1 January, Monday. day, 8°; night, 5°; mostly clear | 2 January, Tuesday. day, 8°; night, 7°; partly cloudy | 3 January, Wednesday. day, 9°; night, 4°; partly cloudy | 4 January, Thursday. day, 7°; night, 5°; mostly clear | Next, the average data for 10 years5 January, Friday. day, 3°; night, 2°; rain | 6 January, Saturday. day, 3°; night, 1°; rain |
Average for 30 days
5 sunny days; 9 days with precipitation; 16 cloudy days;
air humidity 88%; 9 millimeters of precipitation (2% of annual average); Wind southerly 5.3 Meters per second