Average Weather in Prospect Connecticut, United States
In Prospect, the summers are warm and wet, the winters are freezing, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 19°F to 81°F and is rarely below 5°F or above 88°F.
Based on the tourism score, the best time of year to visit Prospect for warm-weather activities is from mid June to mid September.
The warm season lasts for 3.5 months, from June 1 to September 16, with an average daily high temperature above 72°F. The hottest day of the year is July 21, with an average high of 81°F and low of 63°F.
The cold season lasts for 3.3 months, from December 3 to March 12, with an average daily high temperature below 43°F. The coldest day of the year is January 29, with an average low of 19°F and high of 34°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
In Prospect, 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 Prospect begins around June 26 and lasts for 4.6 months, ending around November 12. On September 6, 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 12 and lasts for 7.4 months, ending around June 26. On February 28, 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.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Prospect varies throughout the year.
The wetter season lasts 3.5 months, from May 3 to August 18, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 36% on May 30.
The drier season lasts 8.5 months, from August 18 to May 3. 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 in Prospect changes throughout the year.
Rain alone is the most common for 12 months, from January 20 to January 7. The highest chance of a day with rain alone is 36% on May 30.
Snow alone is the most common for 1.9 weeks, from January 7 to January 20. The highest chance of a day with snow alone is 10% on January 13.
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 of the year. Prospect experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Prospect. The most rain falls during the 31 days centered around June 4, with an average total accumulation of 3.9 inches.
The least rain falls around January 24, with an average total accumulation of 1.7 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 of the year. Prospect experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.6 months, from October 31 to April 18, 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 25, with an average total liquid-equivalent accumulation of 1.2 inches.
The snowless period of the year lasts for 6.4 months, from April 18 to October 31. The least snow falls around July 12, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Prospect varies significantly over the course of the year. In 2018, the shortest day is December 21, with 9 hours, 10 minutes of daylight; the longest day is June 21, with 15 hours, 11 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:17 AM on June 15, and the latest sunrise is 2 hours, 9 minutes later at 7:26 AM on November 3. The earliest sunset is at 4:21 PM on December 8, and the latest sunset is 4 hours, 8 minutes later at 8:29 PM on June 27.
Daylight saving time (DST) is observed in Prospect during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
Prospect experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.4 months, from June 8 to September 21, during which time the comfort level is muggy, oppressive, or miserable at least 10% of the time. The muggiest day of the year is July 30, with muggy conditions 38% of the time.
The least muggy day of the year is December 14, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Prospect experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 5.5 months, from November 6 to April 23, with average wind speeds of more than 5.4 miles per hour. The windiest day of the year is February 26, with an average hourly wind speed of 7.0 miles per hour.
The calmer time of year lasts for 6.5 months, from April 23 to November 6. The calmest day of the year is August 1, with an average hourly wind speed of 3.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Prospect varies throughout the year.
The wind is most often from the north for 1.7 months, from March 8 to April 29, with a peak percentage of 35% on March 11. The wind is most often from the south for 2.1 months, from April 29 to July 2 and for 2.5 months, from July 18 to October 2, with a peak percentage of 37% on July 28. The wind is most often from the west for 2.3 weeks, from July 2 to July 18 and for 5.2 months, from October 2 to March 8, with a peak percentage of 37% on July 7.
Prospect 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 3.6 months, from June 24 to October 11, with an average temperature above 64°F. The day of the year with the warmest water is August 12, with an average temperature of 72°F.
The time of year with cooler water lasts for 3.5 months, from December 31 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
Best Time of Year to Visit
To characterize how pleasant the weather is in Prospect throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Prospect for general outdoor tourist activities is from mid June to mid September, with a peak score in the second week of August.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Prospect for hot-weather activities is from early July to mid August, with a peak score in the last week of July.
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. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
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.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Prospect typically lasts for 5.8 months (176 days), from around April 22 to around October 16, rarely starting before April 5 or after May 13, and rarely ending before September 28 or after November 3.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Prospect should appear around April 25, only rarely appearing before April 11 or after May 7.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.6 months, from May 2 to August 21, with an average daily incident shortwave energy per square meter above 5.9 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 3.2 months, from November 5 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 23, with an average of 1.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Prospect are 41.502 deg latitude, -72.979 deg longitude, and 630 ft elevation.
The topography within 2 miles of Prospect contains significant variations in elevation, with a maximum elevation change of 610 feet and an average elevation above sea level of 707 feet. Within 10 miles contains significant variations in elevation (1,033 feet). Within 50 miles contains very significant variations in elevation (2,605 feet).
The area within 2 miles of Prospect is covered by trees (88%) and artificial surfaces (12%), within 10 miles by trees (65%) and artificial surfaces (34%), and within 50 miles by trees (61%) and water (18%).
This report illustrates the typical weather in Prospect, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Prospect.
For each station, the records are corrected for the elevation difference between that station and Prospect 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 Prospect is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Prospect and a given station.
The stations contributing to this reconstruction are: Meriden Markham Municipal Airport (30%, 13 kilometers, east); Waterbury-Oxford Airport (56%, 13 kilometers, west); and Tweed-New Haven Airport (14%, 28 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .