Altoona in September
7.6out of 10
Yes, a good time to go
Warm and comfortable: highs around 22°C. Frequent rain: about 10 rainy days.
22°CAvg high
12°CAvg low
10Rainy days (104 mm)
12:15 hDaylight
07:00Sunrise · 19:15 Sunset
Why this score
- Warm and comfortable: highs around 22°C
- Frequent rain: about 10 rainy days
- Rain varies a lot between years (±4.1 days)
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±4.1 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 | 78 mm | 11 | – | – | 3.7 |
| February | 3°C | -6°C | 71 mm | 11 | – | – | 4.1 |
| March | 8°C | -2°C | 99 mm | 12 | – | – | 4.8 |
| April | 15°C | 4°C | 107 mm | 14 | – | – | 6.0 |
| May | 20°C | 10°C | 118 mm | 15 | – | – | 6.6 |
| June | 24°C | 14°C | 111 mm | 13 | – | – | 7.2 |
| July | 26°C | 17°C | 99 mm | 13 | – | – | 7.3 |
| August | 26°C | 16°C | 84 mm | 11 | – | – | 7.6 |
| September | 22°C | 12°C | 104 mm | 10 | – | – | 7.6 |
| October | 16°C | 6°C | 89 mm | 10 | – | – | 6.7 |
| November | 9°C | 1°C | 80 mm | 9 | – | – | 5.6 |
| December | 3°C | -4°C | 83 mm | 10 | – | – | 4.3 |
Frequently asked questions
How hot is Altoona in September?
Daytime highs average 22°C and nights about 12°C.
When is the best time to visit Altoona?
The best months are August, September, July, June.