Is this weather normal in Union County?

Pennsylvania · county records since 1895, through September 2026.

Weather › Pennsylvania › Union County

Union County has warmed about 0.5° per decade since 1970. September 2026 averaged 65.0° there, 1.6° above the usual for September (23rd warmest of 132).

This week

Usual for Oct 28 to Nov 3: highs near 56°, lows near 37°

That is the 1991 to 2020 average for these dates in Union County. The Weather Service forecast fills in below.

Loading the forecast...

usual high for the datewarmercooler

The last 12 months

Oct: +0.4°OctNov: +0.2°NovDec: -4.2°DecJan 2026: -3.6°JanFeb: -2.6°FebMar: +4.6°MarApr: +4.4°AprMay: -1.9°MayJun: +0.4°JunJul: +1.2°JulAug: -0.6°AugSep: +1.6°Sepwarmercooler

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1895.

Every year since 1895

18952025

Rain and drought

Oct: +0.4 inOctNov: -1.8 inNovDec: -1.1 inDecJan 2026: -1.2 inJanFeb: -1.2 inFebMar: +2.4 inMarApr: -0.6 inAprMay: -0.7 inMayJun: -0.7 inJunJul: -0.7 inJulAug: +0.9 inAugSep: +1.9 inSepwetterdrier

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Union County

MonthUsual high / lowUsual rainWarmestColdest
January34° / 19°3.1 in38.7° 193213.0° 1918
February38° / 20°2.4 in36.0° 199816.1° 1895
March47° / 27°3.4 in47.8° 201226.5° 1960
April61° / 37°3.7 in55.2° 192141.6° 1943
May71° / 48°4.0 in65.4° 191151.0° 1967
June79° / 57°4.1 in71.7° 194362.0° 1958
July83° / 61°4.3 in76.0° 195567.6° 2009
August81° / 60°3.9 in74.4° 201663.7° 1927
September74° / 53°4.5 in68.2° 196157.8° 1962
October62° / 41°3.9 in58.5° 200744.2° 1917
November50° / 32°3.2 in46.8° 193133.7° 1976
December39° / 25°3.3 in40.9° 201518.3° 1989

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Union County

Crime Radar: Mifflinburg

Nearby counties