Castle Shannon, PA Weather & Climate Normals
What a normal year in Castle Shannon actually looks like
On the 30-year record NOAA keeps for Castle Shannon, PA, the comfort score comes out to 50/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 5 months a year land in the 55–75°F range this site treats as mild.
How much Castle Shannon's weather actually swings
Average temperatures in Castle Shannon run from 30°F in Jan up to 74°F in Jul, a 44.1°F seasonal swing, a middling gap by national standards.
How wet Castle Shannon actually gets
Castle Shannon averages 41.34in of precipitation a year across roughly 161 days with measurable rain or snow; the nearest NOAA station does not record snowfall, so no snow figure is shown rather than guessed.
Castle Shannon against the rest of the country
Out of 4876 cities scored here, Castle Shannon comes in at 1881; within PA alone it ranks 40 of 193. Population is about 8,094.
Checking the actual forecast
These figures come from PITTSBURGH ALLEGHENY CO AP, PA US, the NOAA station 5.2 miles from Castle Shannon, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is