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 hottest day of the year is July 21, with an average high of 80°F and low of 64°F. Lewiston Portland, © Climate-Data.org / AM OP / OpenStreetMap contributors, Portsmouth Weather by month // weather averages, Portsmouth Climate graph // Weather by Month. The Area of Portsmouth is roughly 43.57 km² (16.82 mi²) Weather data is prone to errors, outages, and other defects. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The thin dotted line is the corresponding average liquid-equivalent snowfall. The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands. Get the monthly weather forecast for Portsmouth, NH, including daily high/low, historical averages, to help you plan ahead. Mean Temp: 49 °F. Exeter Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. 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. Throughout the year, temperatures vary by 25.9 °C | 78.6 °F. The most rain falls during the 31 days centered around October 23, with an average total accumulation of 4.2 inches. Weather.com brings you the most accurate monthly weather forecast for Portsmouth, NH with average/record and high/low temperatures, precipitation and more. The snowless period of the year lasts for 6.9 months, from April 14 to November 10. The average hourly temperature, color coded into bands. ... Day Average Temp: 18.67: 24-Precipitation (Inches) … The average water temperature during the year located in Portsmouth (Gulf of Maine) at 10.50°C | 50.90°F. Portsmouth is a city with a significant rainfall. At about 18.80°C | 65.84°F is the maximum of the water temperatures over the months. The most snow falls during the 31 days centered around January 18, with an average total liquid-equivalent accumulation of 1.2 inches. The warm season lasts for 3.4 months, from June 5 to September 16, with an average daily high temperature above 71°F. Newington Summer is the time to visit Portsmouth, New Hampshire. The most pleasant months of the year for Portsmouth are June, August and July. Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis. The climate here is classified as Cfb by the Köppen-Geiger system. Rye Based on this score, the best time of year to visit Portsmouth for hot-weather activities is from early July to mid August, with a peak score in the last week of July. Even in the driest month there is a lot of rain. Portsmouth experiences significant seasonal variation in monthly liquid-equivalent snowfall. Based on weather reports collected during 1985–2015. In 2021, the shortest day is December 21, with 9 hours, 0 minutes of daylight; the longest day is June 20, with 15 hours, 22 minutes of daylight. Daylight saving time (DST) is observed in Portsmouth during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7. Lowell 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 amount of rain in December is high with an average of 81mm (3.2in). Time zones for airports and weather stations are provided by AskGeo.com . 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. Monthly averages Concord Longitude: -71.5023, Latitude: 43.2027 Average weather Concord, NH - 3301. The darker period of the year lasts for 3.3 months, from November 2 to February 10, with an average daily incident shortwave energy per square meter below 2.6 kWh. Click on each chart for more information. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. The percentage of time spent at various humidity comfort levels, categorized by dew point. The wetter season lasts 11 months, from September 27 to August 12, with a greater than 28% chance of a given day being a wet day. A little cooler on Friday with a mixture of sunny spells and scattered showers. 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. The brightest day of the year is July 2, with an average of 6.8 kWh. The cloudier part of the year begins around November 2 and lasts for 7.9 months, ending around June 28. Showers clearing on Thursday night. Portsmouth climate summary The Portsmouth lies on 12m above sea level The climate is cold and temperate. The shaded overlays indicate night and civil twilight. The average minimum temperature (usually the minimum temperature is noted during the night) in Portsmouth in December is -8.0°C (17.6°F). 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. 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. Nashua In terms of rainfall, November is usually the wettest month in Portsmouth with 125mm on average. This section reports on the wide-area average surface temperature of that water. You can jump to a separate table for Southern and Northern New Hampshire.. The least rain falls around January 22, with an average total accumulation of 1.9 inches. for New Portsmouth, New Hampshire For the purposes of this report, the geographical coordinates of Portsmouth are 43.072 deg latitude, -70.763 deg longitude, and 16 ft elevation. Portsmouth, New Hampshire, United States of America - Monthly weather averages including average high and low Temperature, Precipitation, Pressure, Wind Charts to assist you in planning your travel, holiday or an outdoor activity at Portsmouth, United States of America The chance of wet days in Portsmouth varies throughout the year. Average Weather during November in Portsmouth (New Hampshire), United States of America. The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. Manchester We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Average Weather in Portsmouth New Hampshire, United States In Portsmouth, the summers are warm; the winters are freezing, wet, and windy; and it is partly cloudy year round. ): 49.4 [The annual snowfall in inches.Precipitation Days: 121 [The annual number of days with measurable precipitation (over .01 inch).Sunny Days: 198 [The average number of days per year that are predominantly sunny.Average July High Temperature: 83 Longitude W70.8 – Latitude N43.1 • Rockingham County, New Hampshire, USA . The area within 2 miles of Portsmouth is covered by artificial surfaces (61%) and water (33%), within 10 miles by trees (41%) and water (38%), and within 50 miles by water (44%) and trees (41%). 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. The highest chance of a day with snow alone is 10% on January 9. In this report, we use a base of 50°F and a cap of 86°F. Low Temp: 18 °F. 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. July is the hottest month for the 03801 zip code with an average high temperature of 81.9°, which ranks it as warmer than most places in New Hampshire. The most monthly precipitation in Portsmouth occurs in September with 8.5 inches. The figure below presents a compact representation of key lunar data for 2021. Snow alone is the most common for 1.9 weeks, from January 5 to January 18. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. 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). Newburyport The calmest day of the year is July 27, with an average hourly wind speed of 5.5 miles per hour. Average annual temperatures for cities, towns, parks and lakes throughout New Hampshire are listed below in degrees Fahrenheit and Celsius. The maximum of 18.80°C | 65.84°F is measured around August 04. The time of year with cooler water lasts for 3.9 months, from December 30 to April 26, with an average temperature below 44°F. Portsmouth experiences significant seasonal variation in monthly rainfall. Edremit, Turkey (5,462 miles away) and NikkÅ, Japan (6,608 miles) are the far-away foreign places with temperatures most similar to Portsmouth (view comparison). On May 17, the cloudiest day of the year, the sky is overcast or mostly cloudy 56% of the time, and clear, mostly clear, or partly cloudy 44% of the time. As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. In June, in Portsmouth, the average low-temperature is 55°F (12.8°C). Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The growing season in Portsmouth typically lasts for 6.4 months (195 days), from around April 14 to around October 26, rarely starting before March 29 or after April 30, and rarely ending before October 7 or after November 15. Over the course of the year, the temperature typically varies from 19°F to 80°F and is rarely below 5°F or above 89°F . The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. wind speeds 158-206 mph) tornado 12.0 miles away from the Portsmouth city center injured 5 people and caused between $5000 and $50,000 in damages.. On 6/19/1957, a category F2 (max. The highest chance of a day with rain alone is 33% on June 15. To characterize how pleasant the weather is in Portsmouth throughout the year, we compute two travel scores. The percentage of time spent in various temperature bands. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. support@__remove_this_part__weatherspark.com. July is the hottest month for Portsmouth with an average high temperature of 81.9°, which ranks it as warmer than most places in New Hampshire. The average annual temperature in Portsmouth is 8.5 °C | 47.3 °F. The least muggy day of the year is February 23, when muggy conditions are essentially unheard of. 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