West Mifflin, PA Weather & Climate Normals
West Mifflin's real weather, in one number
West Mifflin, PA scores 50/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
West Mifflin's hottest and coldest months
West Mifflin's hottest month is Jul, averaging 74°F; its coldest is Jan, averaging 30°F, a 44.1°F swing across the year, a middling gap by national standards.
West Mifflin's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 37°F | 22°F | 3.08in |
| Feb | 40°F | 24°F | 2.57in |
| Mar | 49°F | 31°F | 3.22in |
| Apr | 63°F | 42°F | 3.4in |
| May | 72°F | 52°F | 4.08in |
| Jun | 79°F | 60°F | 4.58in |
| Jul | 83°F | 64°F | 3.93in |
| Aug | 81°F | 63°F | 3.81in |
| Sep | 75°F | 56°F | 3.54in |
| Oct | 63°F | 45°F | 3.06in |
| Nov | 51°F | 35°F | 3.03in |
| Dec | 41°F | 28°F | 3.04in |
May, Jun, Jul, Aug, and Sep are the best time to see West Mifflin at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in West Mifflin
Over a typical year, West Mifflin sees about 41.34in of precipitation a year across roughly 161 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where West Mifflin ranks
West Mifflin ranks 1745 of 4876 US cities in this dataset for comfort score, and 14 of 193 within PA. About 18,902 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Pittsburgh Allegheny Co Ap, PA US, 0.9 miles from West Mifflin, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated