Williamsport in December
4.3out of 10
Not the best time
Cold: highs around 3°C. Frequent rain: about 10 rainy days.
3°CAvg high
-3°CAvg low
10Rainy days (91 mm)
9:02 hDaylight
07:33Sunrise · 16:35 Sunset
Why this score
- Cold: highs around 3°C
- Frequent rain: about 10 rainy days
- Nights fall to about -3°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?
Rain in December varies a lot between years (±3.2 rainy days), so check the forecast closer to your trip. 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 | 1°C | -7°C | 83 mm | 10 | – | – | 3.8 |
| February | 3°C | -6°C | 70 mm | 9 | – | – | 4.2 |
| March | 8°C | -2°C | 98 mm | 11 | – | – | 5.0 |
| April | 15°C | 4°C | 104 mm | 12 | – | – | 6.3 |
| May | 21°C | 10°C | 102 mm | 13 | – | – | 7.1 |
| June | 25°C | 15°C | 108 mm | 12 | – | – | 7.4 |
| July | 28°C | 17°C | 93 mm | 11 | – | – | 7.5 |
| August | 27°C | 17°C | 94 mm | 11 | – | – | 7.6 |
| September | 23°C | 13°C | 117 mm | 9 | – | – | 7.7 |
| October | 16°C | 7°C | 100 mm | 10 | – | – | 6.7 |
| November | 9°C | 1°C | 88 mm | 9 | – | – | 5.7 |
| December | 3°C | -3°C | 91 mm | 10 | – | – | 4.3 |
Frequently asked questions
How hot is Williamsport in December?
Daytime highs average 3°C and nights about -3°C.
When is the best time to visit Williamsport?
The best months are September, August, July, June.