There are also monthly and yearly counts of days with cold weather.The first set of high and low temperatures are averages for 2010 to 2019. For the purposes of this report, the geographical coordinates of Pittsburgh are 40.441 deg latitude, -79.996 deg longitude, and 938 ft elevation. To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The numbers here tell you how hot and cold the weather usually is in Pittsburgh, Pennsylvania during each month of the year.The average high and low temperatures are listed below monthly and annually for Pittsburgh, in both degrees Fahrenheit and Celsius. This report illustrates the typical weather in Pittsburgh year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. The growing season in Pittsburgh typically lasts for The average annual percentage of humidity is: 68.0% Shortwave radiation includes visible light and ultraviolet radiation. To fill in the rest, there's information on how many days a month get above or below a given temperature.To find out how often it rises over 70, 80 or 90 °F each month in Pittsburgh, scroll down farther. Days of Hot Weather in Pittsburgh. The month of January in Pittsburgh is reliably fully outside of the growing season. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The percentage of time spent at various humidity comfort levels, categorized by dew point. The thin dotted lines are the corresponding average perceived temperatures. Average humidity in Pittsburgh (Pennsylvania) The mean monthly relative humidity over the year in Pittsburgh (Pennsylvania), United States of America. We assume no responsibility for any decisions made on the basis of the content presented on this site. NOAA National Centers for Environmental Information. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The hourly average wind direction in Pittsburgh throughout January is predominantly from the The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Monthly temperature, precipitation and hours of sunshine. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. This section discusses the wide-area hourly average wind vector (speed and direction) at Based on weather reports collected during 1985–2015. Pittsburgh Temperature Yesterday. The thin dotted line is the corresponding average rainfall. Pittsburgh weather averages and climate Pittsburgh, Pennsylvania. The temperature at Pittsburgh climbs into the 90s Fahrenheit for seven days a year on average, scattered throughout summer. Lower dew points feel drier and higher dew points feel more humid. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose.