Brentwood, PA Weather & Climate Normals
What a normal year in Brentwood actually looks like
On the 30-year record NOAA keeps for Brentwood, 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 Brentwood's weather actually swings
Average temperatures in Brentwood 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 Brentwood actually gets
Brentwood 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.
Brentwood against the rest of the country
Out of 4876 cities scored here, Brentwood comes in at 1846; within PA alone it ranks 31 of 193. Population is about 9,704.
Checking the actual forecast
These figures come from PITTSBURGH ALLEGHENY CO AP, PA US, the NOAA station 3.1 miles from Brentwood, 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