Cool
Average highs are around 13°C, so pack for cooler days.
March verdict
National Harbor, Maryland, United States in March
Weather score35Poor
Poor for holiday weather
Average highs are around 13°C, so pack for cooler days. Sunshine averages 6.6h per day, enough for a balanced month. Rainfall averages 87mm, so some wet days are possible.
March weather
Monthly averages
Temp
13°C
Rain
87mm
Sun
6.6h
Weather score
35
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 87mm, so some wet days are possible.
Some sun
Sunshine averages 6.6h per day, enough for a balanced month.
Map
Weather map
Compare National Harbor, Maryland, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
March13°C average high
March is on the cooler side of National Harbor's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
March87mm average rain
March sits near National Harbor's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to July and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
March6.6 hours average sun
March sits close to National Harbor's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
March35 weather score
March is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
