Mild
Average highs are around 24°C, so days are mild rather than hot.
September verdict
Washington, Pennsylvania, United States in September
Weather score57Good
Good for holiday weather
Average highs are around 24°C, so days are mild rather than hot. Sunshine averages 6.3h per day, enough for a balanced month. Rainfall averages 79mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
24°C
Rain
79mm
Sun
6.3h
Weather score
57
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 79mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.3h per day, enough for a balanced month.
Map
Weather map
Compare Washington, Pennsylvania, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September24°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
September79mm average rain
September sits near Washington's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.3 hours average sun
September is brighter than Washington's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September57 weather score
September scores above Washington's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels in Washington, Pennsylvania, United States
Marriott
View all
The Ritz-Carlton, Georgetown Washington D CWashington, District Of Columbia, USA
The Ritz-Carlton, Washington D CWashington, District Of Columbia, USA
The St. Regis Washington, D.C.Washington, District Of Columbia, USA
JW Marriott Washington, DCWashington, District Of Columbia, USA
Marriott Marquis Washington, DCWashington, District Of Columbia, USA
Washington Marriott at Metro CenterWashington, District Of Columbia, USA