Boulder City in September
7.0out of 10
Possible, with caveats
Very hot: daytime highs around 36°C. Very dry: about 2 rainy days.
36°CAvg high
23°CAvg low
2Rainy days (8 mm)
12:13 hDaylight
06:27Sunrise · 18:40 Sunset
Why this score
- Very hot: daytime highs around 36°C
- Very dry: about 2 rainy days
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (1.9 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 | 15°C | 5°C | 23 mm | 4 | – | – | 7.5 |
| February | 18°C | 7°C | 30 mm | 4 | – | – | 7.8 |
| March | 23°C | 11°C | 19 mm | 3 | – | – | 8.7 |
| April | 27°C | 14°C | 6 mm | 2 | – | – | 8.9 |
| May | 32°C | 19°C | 3 mm | 1 | – | – | 8.0 |
| June | 38°C | 24°C | 2 mm | 0 | – | – | 6.5 |
| July | 41°C | 28°C | 7 mm | 2 | – | – | 5.5 |
| August | 40°C | 27°C | 11 mm | 3 | – | – | 5.7 |
| September | 36°C | 23°C | 8 mm | 2 | – | – | 7.0 |
| October | 28°C | 16°C | 11 mm | 2 | – | – | 8.9 |
| November | 20°C | 9°C | 13 mm | 2 | – | – | 8.6 |
| December | 14°C | 5°C | 20 mm | 3 | – | – | 7.5 |
Frequently asked questions
How hot is Boulder City in September?
Daytime highs average 36°C and nights about 23°C.
When is the best time to visit Boulder City?
The best months are April, October, March, November.