Barstow (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Barstow.
Climate overview of Barstow
Temperatures in Barstow, California, United States of America, vary greatly throughout the year. July is the hottest month at 39°C (102°F), while December is the coldest at 14°C (57°F).
Rain/snowfall is extremely rare, with only 108 mm (4.3 in) falling across the entire year.
Barstow Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Barstow — and find the best time to visit.
Monthly Temperature in Barstow
The climate in Barstow is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a very hot 39°C (102°F) in July, the warmest time of the year, to a moderate 14°C (57°F) during cooler months like December.
At night, you can expect temperatures ranging from 22°C (72°F) in July to around 1°C (34°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Barstow
Barstow is known for its low rain/snowfall, with yearly precipitation amounts around 108 mm (4.3 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 31 mm (1.2 in) of precipitation, recorded across 4 rainy days. In contrast, the driest month June brings less rainfall, with 0 mm (0 in) over 0 rainy days. For more details, please visit our Barstow Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Barstow
Pack accordingly for the dry conditions. Sun protection and a hat are essential, though rain gear is rarely needed. Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Barstow
What is the best time to visit Barstow?
February, March, April, October and November typically offer the most optimal weather in Barstow. In contrast, June, July, August and September tend to have less optimal conditions. Barstow has a distinct dry season from January to December.
What temperatures can I expect in Barstow?
Daytime highs range from 14°C (57°F) in December to 39°C (102°F) in July. Nighttime lows range from 1°C (34°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Barstow get?
Annual rainfall is around 108 mm (4.3 in). December is the wettest month with 31 mm (1.2 in), while June is the driest with 0 mm (0 in).
Barstow 3-Day Forecast
Barstow (CA) 3-Day Forecast
Barstow on the map
Barstow is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
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