The Dalles in September
8.7out of 10
Yes, a good time to go
Warm and comfortable: highs around 25°C. Very dry: about 3 rainy days.
25°CAvg high
10°CAvg low
3Rainy days (19 mm)
12:18 hDaylight
06:50Sunrise · 19:08 Sunset
Why this score
- Warm and comfortable: highs around 25°C
- Very dry: about 3 rainy days
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
How reliable is the forecast?
Rain in September varies a lot between years (±3.1 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 | 5°C | -2°C | 117 mm | 15 | – | – | 3.9 |
| February | 7°C | -1°C | 92 mm | 13 | – | – | 4.7 |
| March | 11°C | 1°C | 87 mm | 14 | – | – | 5.4 |
| April | 15°C | 4°C | 60 mm | 11 | – | – | 6.5 |
| May | 20°C | 7°C | 41 mm | 8 | – | – | 7.7 |
| June | 24°C | 10°C | 23 mm | 5 | – | – | 8.4 |
| July | 29°C | 13°C | 7 mm | 2 | – | – | 8.8 |
| August | 29°C | 13°C | 7 mm | 2 | – | – | 8.8 |
| September | 25°C | 10°C | 19 mm | 3 | – | – | 8.7 |
| October | 17°C | 6°C | 58 mm | 9 | – | – | 7.1 |
| November | 9°C | 1°C | 104 mm | 14 | – | – | 4.9 |
| December | 4°C | -2°C | 134 mm | 16 | – | – | 3.6 |
Frequently asked questions
How hot is The Dalles in September?
Daytime highs average 25°C and nights about 10°C.
When is the best time to visit The Dalles?
The best months are July, August, September, June.