Weather information for the Barstow area is provided below. Average temperatures, climate details and current forecasts are included.
Climate
As a city of the Mojave Desert, Barstow is dry and Barstow is hot. No matter when you visit, the sun is likely to be shining . . . and if you visit in the summertime, it's best to dress for intense heat. Spring and fall are more moderate and the winter is mild - if the nights are rather chilly.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
| Avg. High | 60 | 65 | 70 | 78 | 86 | 96 | 102 | 100 | 94 | 82 | 70 | 61 | |
| Avg. Low | 31 | 35 | 39 | 46 | 53 | 61 | 67 | 65 | 58 | 48 | 37 | 31 | |
| Precipitation | 0.8 | 0.6 | 0.6 | 0.2 | 0.1 | 0.1 | 0.3 | 0.3 | 0.3 | 0.2 | 0.4 | 0.6 | |

