Let us make a comparision with Bahrain (The Kingdom of Bahrain consists of 34 Islands.)
| Bahrain | Mojave | |
|---|---|---|
| Rainfall (average, per year) | 2.79" | 7" |
| Snowfall | 0" | 1.1" |
| Precipitation (annual) | 9.9 days | 24.8 days |
| Temperature (Winter) | 10 - 20 °C (50 - 68 °F) | 0 °C (32 °F) |
| Temperature (Summer) | 40 - 46 °C (104 - 115 °F) | 36.5 °C (97.7 °F) |
| Humidity | 67% (May) - 81% (December) | 10% (summer afternoon) - 50% (winter nights) |
So the lake will only increase humidity. (or may be winter temperature)