Average Weather in Poughkeepsie New York, United States
In Poughkeepsie, the temperature typically varies from 18°F to 84°F over the course of the year, and is rarely below 1°F or above 92°F.
The warm season lasts for 110 days, from May 29 to September 16, with an average daily high temperature above 74°F. The hottest day of the year is July 21, with an average high of 84°F and low of 63°F.
The cold season lasts for 100 days, from December 1 to March 11, with an average daily high temperature below 45°F. The coldest day of the year is January 29, with an average low of 18°F and high of 35°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
The length of the day in Poughkeepsie varies significantly over the course of the year. In 2017, the shortest day is December 21, with 9 hours, 9 minutes of daylight; the longest day is June 21, with 15 hours, 12 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:20 AM on June 14, and the latest sunrise is 2 hours, 11 minutes later at 7:31 AM on November 4. The earliest sunset is at 4:25 PM on December 8, and the latest sunset is 4 hours, 9 minutes later at 8:34 PM on June 26.
Daylight saving time (DST) is observed in Poughkeepsie during 2017, starting in the spring on March 12, lasting 237 days, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
In Poughkeepsie, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Poughkeepsie begins around June 25 and lasts for 135 days, ending around November 7. On September 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 65% of the time, and overcast or mostly cloudy 35% of the time.
The cloudier part of the year begins around November 7 and lasts for 230 days, ending around June 25. On February 24, the cloudiest day of the year, the sky is overcast or mostly cloudy 54% of the time, and clear, mostly clear, or partly cloudy 46% of the time.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Poughkeepsie varies throughout the year.
The wetter season lasts 137 days, from April 10 to August 25, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 38% on May 31.
The drier season lasts 228 days, from August 25 to April 10. The smallest chance of a wet day is 22% on January 29.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 38% on May 31.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day in the year. Poughkeepsie experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Poughkeepsie. The most rain falls during the 31 days centered around September 30, with an average total accumulation of 4.0 inches.
The least rain falls around January 24, with and average total accumulation of 1.5 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day in the year. Poughkeepsie experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 160 days, from November 4 to April 13, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 26, with an average total liquid-equivalent accumulation of 1.1 inches.
The snowless period of the year lasts for 205 days, from April 13 to November 4. The least snow falls around July 17, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. 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.
Poughkeepsie experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 110 days, from June 3 to September 21, during which time the comfort level is muggy, oppressive, or miserable at least 11% of the time. The muggiest day of the year is July 30, with muggy conditions 42% of the time.
The least muggy day of the year is December 12, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Poughkeepsie experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 156 days, from November 19 to April 24, with average wind speeds of more than 2.7 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 3.5 miles per hour.
The calmer time of year lasts for 209 days, from April 24 to November 19. The calmest day of the year is August 1, with an average hourly wind speed of 1.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Poughkeepsie varies throughout the year.
The wind is most often from the north for 68 days, from March 5 to May 12; for 32 days, from August 17 to September 18; and for 8 days, from September 24 to October 2, with a peak percentage of 36% on March 11. The wind is most often from the south for 12 days, from May 12 to May 24; for 12 days, from August 5 to August 17; for 6 days, from September 18 to September 24; and for 4 days, from October 2 to October 6, with a peak percentage of 32% on June 30. The wind is most often from the west for 73 days, from May 24 to August 5 and for 150 days, from October 6 to March 5, with a peak percentage of 43% on January 14.
Poughkeepsie is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 110 days, from June 23 to October 11, with an average temperature above 65°F. The day of the year with the warmest water is August 11, with an average temperature of 72°F.
The time of year with cooler water lasts for 104 days, from December 30 to April 13, with an average temperature below 43°F. The day of the year with the coolest water is February 21, with an average temperature of 36°F.
Average Water Temperature
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. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences very significant seasonal variation over the course of the year.
The brighter period of the year lasts for 113 days, from May 1 to August 22, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is June 30, with an average of 6.9 kWh.
The darker period of the year lasts for 100 days, from November 3 to February 11, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 20, with an average of 1.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Poughkeepsie are 41.700 deg latitude, -73.921 deg longitude, and 187 ft elevation (map ).
The topography within 2 miles of Poughkeepsie contains only modest variations in elevation, with a maximum elevation change of 466 feet, and an average elevation above sea level of 152 feet. Within 10 miles contains very significant variations in elevation (1,099 feet). Within 50 miles contains extreme variations in elevation (4,160 feet).
The area within 2 miles of Poughkeepsie is covered by artificial surfaces (76%) and water (18%), within 10 miles by trees (69%) and artificial surfaces (14%), and within 50 miles by trees (81%).
This report illustrates the typical weather in Poughkeepsie, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Poughkeepsie.
For each station, the records are corrected for the elevation difference between that station and Poughkeepsie according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Poughkeepsie is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Poughkeepsie and a given station.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .