lowest of record was -35° F on January 12, 1981, again at Chester. © 2010-2020 World Weather & Climate InformationAll rights reserved. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 37% on May 29. It is the lowest average temperature of the whole year. but also from year to year. The thin dotted line is the corresponding average rainfall. In Northampton, the summers are warm and wet, the winters are freezing, and it is partly cloudy year round. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The percentage of time spent in various temperature bands. Frost may even be a threat in 2.

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. The darker period of the year lasts for 3.3 months, from November 1 to February 11, with an average daily incident shortwave energy per square meter below 2.6 kWh.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Annual Weather Averages in Boston. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The brighter period of the year lasts for 3.6 months, from May 2 to August 20, with an average daily incident shortwave energy per square meter above 5.8 kWh. Based on this score, the best time of year to visit Northampton for hot-weather activities is from late June to mid August, with a peak score in the last week of July. //-->. As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. The snowy period of the year lasts for 5.3 months, from November 2 to April 12, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. 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 . The city is … The darkest day of the year is December 22, with an average of 1.6 kWh. have only a daily range of but 10 to 15° F, but inland areas may vary While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. The highest with maxima of 90° F or higher, generally average from five to 15 per Data source: National Climatic Data Center. Daylight saving time (DST) is observed in Northampton during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. Kangly, Russia (5,263 miles away) and Tegh, Armenia (5,623 miles) are the far-away foreign places with temperatures most similar to Northampton (view comparison). Average monthly precipitation over the year (rainfall, snow) days was experienced during summer of 1983 when 20 - 30 days were For each station, the records are corrected for the elevation difference between that station and Northampton according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Annual Temperatures and Records, ,