Last updated: February 24, 2025
In March, Portsmouth, United States experiences a notable shift in weather patterns as winter gradually gives way to spring. With a maximum temperature reaching 17°C (63°F) and an average of 2°C (36°F), the days start to feel warmer, although the mercury can dip to a chilly minimum of -14°C (8°F). The month sees an average precipitation amount of 94 mm (3.7 in) over about 10 days, contributing to the region's high humidity levels of 82%. This blend of cool temperatures and increased moisture creates a unique atmosphere as the city transitions into the lively warmth of spring.
As March unfolds in Portsmouth, United States, the chill of winter begins to recede, setting the stage for the awakening of spring. The temperatures experience a subtle shift, with minimums dipping to -14°C (8°F) and daily averages gradually rising to 2°C (36°F). This month sees a consistent maximum temperature of 17°C (63°F), mirroring the highs of February, but hinting at the warmth to come. The transition is palpable as the days grow longer and the landscape prepares for a vibrant April. While jacket weather still prevails, the gradual warming trend signals that the cold grip of winter is loosening, encouraging both nature and residents to anticipate the delightful blooms of spring.
In March, Portsmouth experiences a fairly wet transition into spring, with 94 mm (3.7 in) of precipitation accumulated over 10 days. This month's rainfall slightly dips from February's 98 mm (3.9 in), reflecting a gradual easing of winter's grip. March's consistent precipitation plays a crucial role in nurturing the budding flora, setting the stage for a vibrant April, which is historically the wettest month of the year with 143 mm (5.6 in). As the days grow longer and temperatures rise, the frequent rain contributes to a dynamic weather pattern, ensuring the region remains lush and vibrant as it moves deeper into the blooming season.
In March, Portsmouth experiences a noticeable shift in humidity, with levels dropping to 82% from the previous month’s 84%. This gradual decline marks the beginning of a trend that will continue through spring and into summer. As winter transitions into warmer months, humidity levels start to stabilize, ultimately reaching their lowest in July and August at 67% and 66%, respectively. This seasonal decrease signifies a move toward more comfortable conditions, with the most humid months, January and February, comfortably behind. As the year progresses, the humidity will continue to ebb and flow, highlighting the dynamic climate of Portsmouth.
As winter transitions into spring, Portsmouth experiences a notable increase in the UV Index, reaching 5 in March, indicating a moderate exposure category with a burn time of just 30 minutes. This rise from January's low index of 2 and February's 4 signals that while sun safety becomes increasingly important, serious precautions are not yet essential. As the month progresses, local residents should enjoy the growing sunshine while remaining mindful of UV exposure, especially as April brings an even higher index of 7. For more detailed information on sun safety, check out Portsmouth UV Index.
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As March arrives in Portsmouth, the city basks in a delightful increase in sunshine, boasting a remarkable 256 hours of sun. This significant uptick marks a transition from the winter months, where January and February offered a modest 150 and 183 hours respectively. As spring takes hold, daylight hours steadily climb, paving the way to even sunnier days ahead. With April retaining a healthy 245 hours and May shining brightest at 295 hours, it’s evident that March serves as a joyous herald of the longer, sun-filled days of summer. The trend of increasing sunlight not only brightens the mood but also invites residents and visitors alike to embrace the outdoors after a long winter.
As spring approaches, the likelihood of sunny weather in Portsmouth, United States significantly increases in March, boasting a promising 61% chance of sunshine. This marks a notable rise from the winter months, with January and February experiencing only 42% and 35% chances, respectively. Interestingly, March stands out as one of the sunniest months compared to the subsequent spring months, such as April at 40% and May at 38%. This trend suggests that as winter fades, Portsmouth residents can look forward to more vibrant and sunnier days, making March a delightful time for outdoor activities and enjoying the onset of spring.
As March arrives in Portsmouth, the days grow noticeably longer, with 11 hours of daylight welcoming the onset of spring. This increase marks a shift from the 10 hours in February, hinting at the season's awakening and the gradual transition towards summer. Over the coming months, daylight duration will continue to climb, reaching a peak of 15 hours in June before tapering off again. This progressive extension of daylight not only brings more opportunities for outdoor activities but also heralds a time of renewal, as the natural world bursts back to life in vibrant colors and sounds.
March in Portsmouth heralds a subtle shift in the winds, as the average wind speed increases to 5.2 m/s (12 mph), marking the highest speed for the month. This uptick signals the onset of spring, providing residents with a refreshing breeze that contrasts with the steady winds of January and February, each at 4.7 m/s (11 mph). Following March, the winds begin to taper off in April, dropping to 4.4 m/s (10 mph), suggesting a gradual transition into milder spring days. As spring progresses into summer, the average wind speeds continue to decline, reaching their yearly low in July at 3.5 m/s (8 mph), implying that March serves as a captivating bridge from the winter's chill to the gentle warmth of summer, characterized by its refreshing and invigorating breezes.
The weather in Portsmouth changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of March's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Portsmouth and find detailed weather information for every month.
In comparing the weather between March and January, we see a notable shift in temperatures and precipitation patterns. March experiences higher average temperatures, ranging from a chilly minimum of -14°C (8°F) to a more pleasant maximum of 17°C (63°F), with an average temperature of 2°C (36°F). This contrasts with January, which has a colder minimum of -19°C (-2°F) and an average of -1°C (30°F), while still reaching the same maximum of 17°C (64°F).
Precipitation is slightly higher in March, totaling 94 mm (3.7 in) over approximately 10 days, compared to January's 79 mm (3.1 in) over 8 days. Additionally, humidity levels are somewhat lower in March at 82%, compared to January's 86%. For more in-depth insights on January weather, you can visit Portsmouth weather in January.
When comparing the weather in March and February, March generally sees slightly milder temperatures, with an average of 2°C (36°F) compared to February's average of 0°C (32°F). Both months experience maximum temperatures reaching 17°C (63°F to 64°F) and similar precipitation levels, with March receiving 94 mm (3.7 in) over 10 days and February recording 98 mm (3.9 in) over 11 days. Humidity is also comparable, with March at 82% and February at 84%. For a closer look at February's weather specifics, you can check Portsmouth weather in February.
March and April present a noticeable shift in weather patterns. In March, temperatures range from a chilly minimum of -14°C (8°F) to a maximum of 17°C (63°F), with an average of 2°C (36°F). This month also experiences substantial precipitation of 94 mm (3.7 in) over 10 days, along with a relatively high humidity level of 82%. In contrast, April sees milder temperatures, with a minimum of -2°C (29°F) and a maximum soaring to 24°C (76°F), resulting in an average temperature of 8°C (46°F). Precipitation increases to 143 mm (5.6 in) over 13 days, while humidity remains slightly lower at 80%. For more specific weather details, you can check Portsmouth weather in April.
March weather in Portsmouth features a cool temperature range, with minimums falling as low as -14°C (8°F) and average temperatures around 2°C (36°F). The month is characterized by significant precipitation, totaling 94 mm (3.7 in), and higher humidity at 82%, with rain occurring on about 10 days. In contrast, May brings a noticeable warmth, with minimum temperatures starting at 2°C (37°F) and average highs reaching 13°C (55°F), peaking at 27°C (82°F). Although May has slightly less precipitation at 83 mm (3.3 in) over 11 days, the humidity drops to a more comfortable 72%. This transition from March to May highlights a significant shift toward milder and more pleasant spring weather. For more details, check out Portsmouth weather in May.
March weather is characterized by a much colder climate, with temperatures ranging from a frigid minimum of -14°C (8°F) to a mild maximum of 17°C (63°F), while the average temperature hovers around 2°C (36°F). The month sees significant precipitation at 94 mm (3.7 in) over about 10 days, coupled with high humidity levels at 82%. In contrast, June presents a warmer and more pleasant atmosphere, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 30°C (86°F), and an average temperature of 18°C (65°F). Although June has slightly less precipitation at 88 mm (3.5 in), it maintains a lower humidity level of 72%. This stark difference highlights the transition from the chill of early spring to the warmth of early summer weather. For more detailed insights into June's climate, you can visit Portsmouth weather in June.
March and July in Portsmouth present strikingly different weather patterns. In March, temperatures can plummet to a minimum of -14°C (8°F), with an average of just 2°C (36°F) and a maximum of 17°C (63°F). The month sees around 94 mm (3.7 in) of precipitation over about 10 days, accompanied by high humidity levels of 82%. In contrast, July offers a much warmer climate, with minimum temperatures of 13°C (56°F), an average of 22°C (71°F), and highs reaching up to 31°C (88°F). The precipitation slightly increases to 123 mm (4.8 in) across 12 days, but the humidity drops to a more comfortable 67%. For a closer look at July weather specifics, visit Portsmouth weather in July.
March and August present contrasting weather conditions, showcasing the transition from winter to summer. In March, temperatures range from a chilly minimum of -14°C (8°F) to a maximum of 17°C (63°F), with an average temperature of 2°C (36°F). The month is characterized by higher humidity at 82% and significant precipitation of 94 mm (3.7 in) over about 10 days. In stark contrast, August boasts much warmer temperatures, with a minimum of 13°C (55°F), an average of 22°C (71°F), and a maximum reaching 31°C (88°F). The humidity drops to 66%, and precipitation decreases to 71 mm (2.8 in) over just 9 days, making it a much drier month. For further details, you can refer to Portsmouth weather in August.
The weather in March is characterized by significantly colder temperatures, with lows plummeting to -14°C (8°F) and an average of just 2°C (36°F), while September enjoys milder conditions, ranging from a minimum of 7°C (46°F) to a pleasant average of 18°C (65°F). March also sees higher precipitation levels, amounting to 94 mm (3.7 in) over approximately 10 days, compared to September's 78 mm (3.1 in) spread over 8 days. Additionally, the humidity in March is noticeably higher at 82%, making it feel even chillier, while September's humidity drops to a more comfortable 71%. For a detailed look at what to expect in September, check out Portsmouth weather in September.
In comparing the weather between March and October, we see notable differences in temperature and precipitation. March features a more frigid range, with minimum temperatures dipping as low as -14°C (8°F) and an average around 2°C (36°F). In contrast, October enjoys a milder climate, with temperatures ranging from a minimum of 1°C (34°F) to an average of 13°C (56°F) and peaking at a comfortable 25°C (78°F). Precipitation is more prevalent in October, with 142 mm (5.6 in) over 11 days, compared to March's 94 mm (3.7 in) over 10 days. Humidity levels are slightly higher in March at 82%, while October boasts a lower humidity of 78%. For a closer look at October weather conditions, you can check out Portsmouth weather in October.
In comparing the weather of March and November, both months exhibit similar temperature ranges and patterns, but with some notable differences. March shows a minimum temperature of -14°C (8°F) and an average of 2°C (36°F), while November has slightly milder temperatures, with a minimum of -12°C (11°F) and an average of 6°C (43°F). Both months experience significant precipitation, with March receiving 94 mm (3.7 in) over 10 days, and November recording 108 mm (4.3 in) across 11 days. Additionally, the humidity levels are comparable, with March at 82% and November slightly higher at 84%. For more details on November's weather, you can visit Portsmouth weather in November.
March and December exhibit distinct weather patterns. March typically experiences milder temperatures, with lows averaging around -14°C (8°F) and highs reaching up to 17°C (63°F), while December is generally colder, with minimum temperatures of -19°C (-1°F) and maximums of 15°C (59°F). Both months see approximately 10 days of precipitation, but December has a higher total precipitation of 133 mm (5.2 in) compared to March's 94 mm (3.7 in). Additionally, humidity levels are quite similar, with March at 82% and December slightly lower at 81%. For more detailed information, check out Portsmouth weather in December.
March in Portsmouth marks a notable transition from winter to spring, showcasing a blend of chilly temperatures and increasing chances of precipitation. While the month can still feel quite frigid, with average lows hovering around the freezing point, occasional warmer days hint at the approaching warmth of spring. Humidity levels remain high, contributing to a damp atmosphere, particularly on the days when rain is prevalent. This shift in weather patterns contrasts sharply with the colder, more stable conditions of winter, making March a pivotal month that prepares residents for the milder months ahead. For a more detailed look at how Portsmouth's climate evolves throughout the year, visit Portsmouth Climate.