Fort Irwin Weather in March

What's the weather like in Fort Irwin (California) in March 2026?

The climate in Fort Irwin during March can be summarized as mild and dry.

March is in the spring in Fort Irwin and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 20°C (67°F), whilst at night 5°C (41°F) is normal.

Fort Irwin weather averages (imperial / metric)
Daytime temperature 19.5°C 67.1°F
Nightly temperature 4.9°C 40.8°F
Average temperature 12.2°C 54°F
Daily sunshine 9.7 hrs
Avg rainfall 11 mm 0.4 ins
Rainy days 4 days
Sea temperature 13.5°C 56.3°F
Humidity 48%
Windspeed 15.5kph 10 mph

On average March is the 5th wettest month of the year in Fort Irwin with around 11mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.7 hours of sunshine per day.

March temperatures in Fort Irwin

Fort Irwin average temperature in March

March rainfall

Fort Irwin average rain in March

March hourly sunshine

Fort Irwin average rain in March

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Fort Irwin in March 2025.