Weather & Climate at Fort Irwin Army Base

Barstow, CA

Summary of the weather and climate in Barstow, CA:

The average high is 85.5°F and the average low is 55.3°F.
The hottest month is July with a high of 109.2°F.
The coldest month is December with a low of 34.2°F.
Annual rainfall is 4.48 inches; the rainiest month is February (0.83 in).

Source: NOAA climate normals.

Temperatures through the year

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bars span each month's average low to average high (30°F – 110°F scale).

Monthly averages

Month	High (°F)	Low (°F)	Rain (in)	Snow (in)
January	62.7	35.2	0.59	0
February	67.6	40.6	0.83	0
March	76.1	46.7	0.56	0
April	84.7	52.6	0.18	0
May	94.5	62.9	0.09	0
June	104	71.7	0.06	0
July	109.2	78.2	0.31	0
August	107.6	76.7	0.48	0
September	99.9	68.1	0.31	0
October	86.6	54.1	0.21	0
November	71.7	42.7	0.33	0
December	60.9	34.2	0.53	0