Sierra Vista in September
8.1out of 10
Yes, a good time to go
Warm and comfortable: highs around 29°C. Some rain: about 6 rainy days.
29°CAvg high
17°CAvg low
6Rainy days (35 mm)
12:11 hDaylight
06:10Sunrise · 18:21 Sunset
Why this score
- Warm and comfortable: highs around 29°C
- Some rain: about 6 rainy days
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
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 | 16°C | 2°C | 23 mm | 3 | – | – | 7.6 |
| February | 18°C | 3°C | 21 mm | 4 | – | – | 7.9 |
| March | 21°C | 5°C | 14 mm | 3 | – | – | 8.5 |
| April | 25°C | 8°C | 6 mm | 1 | – | – | 8.9 |
| May | 29°C | 12°C | 6 mm | 2 | – | – | 8.8 |
| June | 34°C | 17°C | 11 mm | 3 | – | – | 7.4 |
| July | 32°C | 19°C | 68 mm | 13 | – | – | 6.5 |
| August | 31°C | 19°C | 64 mm | 13 | – | – | 6.9 |
| September | 29°C | 17°C | 35 mm | 6 | – | – | 8.1 |
| October | 26°C | 11°C | 13 mm | 3 | – | – | 8.7 |
| November | 20°C | 6°C | 15 mm | 2 | – | – | 8.5 |
| December | 15°C | 2°C | 24 mm | 4 | – | – | 7.4 |
Frequently asked questions
How hot is Sierra Vista in September?
Daytime highs average 29°C and nights about 17°C.
When is the best time to visit Sierra Vista?
The best months are April, May, October, March.