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West Mifflin, PA weather and climate

Allegheny County, PA · population 19,338 · about 1,178 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at West Mifflin's own coordinates.

The year at a glance

Sunny days
161
clear or partly cloudy, per year
Precipitation
49 in
per year
Wet days
158
rain or snow per year
Snowfall
26 in
per year
Hot days
9
above 90 °F
Freezing nights
106
at or below 32 °F
Humidity
73%
average relative
Average temperature
52 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 37 °FDaily high, Feb: 40 °FDaily high, Mar: 49 °FDaily high, Apr: 63 °FDaily high, May: 72 °FDaily high, Jun: 79 °FDaily high, Jul: 83 °FDaily high, Aug: 82 °FDaily high, Sep: 75 °FDaily high, Oct: 64 °FDaily high, Nov: 51 °FDaily high, Dec: 41 °FDaily low, Jan: 22 °FDaily low, Feb: 24 °FDaily low, Mar: 31 °FDaily low, Apr: 41 °FDaily low, May: 51 °FDaily low, Jun: 60 °FDaily low, Jul: 64 °FDaily low, Aug: 63 °FDaily low, Sep: 56 °FDaily low, Oct: 45 °FDaily low, Nov: 35 °FDaily low, Dec: 28 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high374049637279838275645141
Daily low222431415160646356453528

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovWest Mifflin, Jan: 3.6 inWest Mifflin, Feb: 3.2 inWest Mifflin, Mar: 4.4 inWest Mifflin, Apr: 4.6 inWest Mifflin, May: 5.0 inWest Mifflin, Jun: 5.2 inWest Mifflin, Jul: 5.0 inWest Mifflin, Aug: 3.8 inWest Mifflin, Sep: 3.9 inWest Mifflin, Oct: 3.6 inWest Mifflin, Nov: 3.5 inWest Mifflin, Dec: 3.5 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
West Mifflin3.63.24.44.65.05.25.03.83.93.63.53.5

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovWest Mifflin, Jan: 8 daysWest Mifflin, Feb: 8 daysWest Mifflin, Mar: 12 daysWest Mifflin, Apr: 13 daysWest Mifflin, May: 14 daysWest Mifflin, Jun: 16 daysWest Mifflin, Jul: 18 daysWest Mifflin, Aug: 19 daysWest Mifflin, Sep: 18 daysWest Mifflin, Oct: 16 daysWest Mifflin, Nov: 12 daysWest Mifflin, Dec: 8 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
West Mifflin881213141618191816128

Compare West Mifflin with another city

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About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).