Upper Saint Clair in December
4.6out of 10
Not the best time
Cold: highs around 6°C. Frequent rain: about 11 rainy days.
6°CAvg high
-2°CAvg low
11Rainy days (89 mm)
9:08 hDaylight
07:42Sunrise · 16:51 Sunset
Why this score
- Cold: highs around 6°C
- Frequent rain: about 11 rainy days
- Nights fall to about -2°C
What to wear and pack
- Winter coat, hat and scarf
- Rain jacket or compact umbrella
- Gloves for freezing mornings
How reliable is the forecast?
Rainfall in December is fairly consistent from year to year (2.8 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 3°C | -4°C | 91 mm | 12 | – | – | 4.0 |
| February | 5°C | -3°C | 82 mm | 11 | – | – | 4.5 |
| March | 11°C | 1°C | 111 mm | 13 | – | – | 5.2 |
| April | 17°C | 6°C | 116 mm | 14 | – | – | 6.3 |
| May | 22°C | 12°C | 126 mm | 15 | – | – | 6.9 |
| June | 26°C | 16°C | 131 mm | 14 | – | – | 7.0 |
| July | 28°C | 18°C | 126 mm | 14 | – | – | 6.9 |
| August | 27°C | 18°C | 96 mm | 12 | – | – | 7.4 |
| September | 24°C | 14°C | 100 mm | 10 | – | – | 7.6 |
| October | 18°C | 8°C | 91 mm | 11 | – | – | 6.9 |
| November | 11°C | 3°C | 88 mm | 10 | – | – | 6.0 |
| December | 6°C | -2°C | 89 mm | 11 | – | – | 4.6 |
Frequently asked questions
How hot is Upper Saint Clair in December?
Daytime highs average 6°C and nights about -2°C.
When is the best time to visit Upper Saint Clair?
The best months are September, August, June.