Mild
Average highs are around 20°C, so days are mild rather than hot.
Weather Guide
National Harbor, Maryland, United States Average Monthly Weather
Weather score52Mixed annual avg
Best months: June, August, July
Across the year, average daytime temperatures are around 19°C, sunshine averages 6.9h per day, and rainfall totals about 981mm.
Annual weather
Annual averages
Temp
19°C
Rain
981mm
Annual total
Sun
6.9h
Weather score
52
Mixed avg
Seasonal climate calendar
Trip feel
Drier
Rainfall averages 71mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.5h 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
October20°C average high
October is close to National Harbor's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
October71mm average rain
October is one of National Harbor's driest months, making outdoor days easier to plan than in wetter parts of the year.
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
October6.5 hours average sun
October 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
October51 weather score
October sits close to National Harbor's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
