Last updated: February 24, 2025
In Princeton, United States, May showcases a dynamic climate, with temperatures peaking at a maximum of 35°C (94°F) and averaging around 17°C (63°F), while dipping to a minimum of 1°C (35°F). The month brings an average precipitation amount of 131 mm (5.1 in) spread over 13 days, contributing to a humid atmosphere with an average humidity level of 69%. As spring unfolds, residents and visitors can expect a blend of warm days and refreshing showers, making May a month of vibrant contrasts in this charming locale.
In May, Princeton, United States, experiences a significant warming trend, shaking off the lingering chill of winter. With minimum temperatures rising to around 1°C (35°F) and average daily highs reaching a pleasant 17°C (63°F), the month marks a true transition into spring. The warmth culminates in maximum temperatures soaring up to 35°C (94°F), providing a vibrant backdrop for outdoor activities and blooming gardens. This month stands out as a time of blossoming life and increased sunshine, as the community emerges from the cold months, ready to embrace the longer, warmer days ahead.
In May, Princeton experiences a noticeable increase in precipitation, with 131 mm (5.1 in) of rain falling over 13 days. This uptick marks the wettest month so far this year, contrasting sharply with the preceding few months, which hovered around 106 mm in April and 109 mm in both March and February. As spring reaches its zenith, the increase in both precipitation amount and frequency hints at the transition into a lush, vibrant summer. Interestingly, this trend of heightened rainfall continues into the early summer months, with June expected to follow suit, albeit with slightly less precipitation. Altogether, May serves as a pivotal month where the landscape begins to flourish, spurred on by the abundant spring rains.
As the calendar turns to May, Princeton experiences a noticeable shift in humidity levels, which drop to 69%. This marks a significant decline from the lingering dampness of winter months, where humidity levels hovered around 84% in January and 82% in February. The gradual decrease continues through April, paving the way for a more comfortable spring. May's humidity aligns with the upcoming summer months, as June also registers at 69%, suggesting a transition to drier air. This trend hints at the warm, inviting days ahead and the blossoming beauty of nature, as Princeton sheds the heavy, moisture-laden air of winter for a refreshing, vibrant atmosphere.
As May arrives in Princeton, residents and visitors alike should be aware that the UV Index climbs to an impressive 10, marking a shift into the very high exposure category. This significant increase in UV intensity from April's index of 8 signals that outdoor enthusiasts face a reduced burn time of just 15 minutes under direct sunlight. This trend emphasizes the growing need for sun protection, as the warmth of spring gives way to summer, with June, July, and August maintaining this high UV level. Staying informed and taking precautions is essential to enjoy the beautiful weather safely. For more details on the UV Index throughout the year, visit Princeton UV Index.
UV Risk Categories
In Princeton, May shines brightly with 278 hours of sunshine, marking a delightful peak in the gradual increase of sunlight that begins with the new year. Following the crisp months of winter, where January sees just 147 hours, the spring months bring a welcome warmth and brightness. March and April showcase a blossoming trend, with 249 and 248 hours respectively, as nature awakens in anticipation of summer. The increase continues into June and July, where Princeton basks in an impressive 315 and 349 hours of sunshine, making this period the sunniest stretch of the year. As summer transitions into fall, the hours begin to taper off, yet May stands out as a beautiful bridge, combining the freshness of spring with the impending vibrancy of summer.
In Princeton, the likelihood of sunny weather experiences some fluctuations throughout the year, with May showing a 41% chance of sunshine. This places it in a moderate range compared to the preceding months; for instance, March boasts the highest probability at 56%, while February hits a low of just 29%. While May's likelihood isn't the peak, it’s an improvement over April's 44%, suggesting that residents can anticipate a mix of sunshine and spring showers. Looking ahead, June dips to 37%, indicating that early summer days may be less sunny than one might hope. Overall, May provides a pleasant window of opportunity for outdoor activities, although sunshine can be a bit elusive.
As spring unfolds into summer in Princeton, the daylight duration steadily increases, bringing longer and brighter days. Starting from a modest 9 hours in January, residents eagerly welcome an increase to 14 hours by May, marking a peak that aligns with the vibrant energy of the season. This trend continues into June and July, maintaining that generous 14 hours of sunlight that invites outdoor activities and community gatherings. However, as summer wanes, daylight gradually recedes, dropping back to 13 hours in August and tapering off to 9 hours by the end of the year. This rhythmic dance of daylight not only highlights the changing seasons but also sets the stage for seasonal festivities, with longer days igniting a sense of joy and connection among the Princeton community.
In Princeton, United States, the month of May experiences a gentle reduction in wind speed, averaging 3.0 m/s (7 mph). This slight dip follows the trend observed in April, where winds also averaged 3.3 m/s. Notably, May’s winds mark a transition towards the calmer summer months, as wind speeds gradually decrease from their peak in early spring. As we move into June and July, the winds continue to soften to 2.6 m/s and 2.3 m/s respectively, inviting a more tranquil atmosphere perfect for outdoor activities. Overall, May serves as a bridge to the quieter breezes of summer, providing a serene backdrop for the blooming beauty of spring in Princeton.
The weather in Princeton changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Princeton and find detailed weather information for every month.
May and January present strikingly different weather patterns. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 35°C (94°F), with an average around 17°C (63°F), while January is much colder, with temperatures varying from -17°C (2°F) to a maximum of 20°C (68°F) and an average of only 2°C (35°F). Additionally, May experiences higher precipitation levels at 131 mm (5.1 in) over 13 days, compared to January’s 64 mm (2.5 in) across 8 days. Humidity is also a factor, with May being relatively less humid at 69% versus January’s higher humidity of 84%. For more detailed information about January weather, you can visit Princeton weather in January.
May and February present contrasting weather patterns. In May, temperatures range from a brisk 1°C (35°F) at night to a warm 35°C (94°F) during the day, with an average of 17°C (63°F). The month experiences considerable rainfall, totaling 131 mm (5.1 in) over about 13 days, and humidity is relatively moderate at 69%. In contrast, February is notably colder, with temperatures dropping as low as -16°C (4°F) and peaking at 26°C (79°F), leading to an average temperature of just 3°C (38°F). Although February sees less total precipitation at 109 mm (4.3 in) over 11 days, it has a higher humidity level of 82%. For more detailed insights into February's weather, check the link: Princeton weather in February.
In comparing March and May weather, it's clear that May brings significantly warmer temperatures, with averages reaching 17°C (63°F) compared to March's average of 6°C (43°F). While March experiences a chilling minimum of -12°C (10°F), May's temperature rarely dips below 1°C (35°F). Additionally, May sees more variability in its warming, with maximum temperatures soaring up to 35°C (94°F), unlike March's highest of 28°C (83°F). Precipitation is quite similar, with May averaging 131 mm (5.1 in) over 13 days and March slightly lower at 109 mm (4.3 in) over 10 days. Notably, March tends to be more humid at 81%, compared to May's 69%. For more details on March weather in Princeton, you can visit Princeton weather in March.
In comparing the weather of May and April, May generally exhibits a broader temperature range, with minimums rising to 1°C (35°F) and maximums reaching as high as 35°C (94°F), compared to April's minimum of -2°C (29°F) and maximum of 31°C (88°F). The average temperature in May is also notably warmer at 17°C (63°F), versus April's 12°C (54°F). While both months receive a significant amount of precipitation, May sees an increase with 131 mm (5.1 in) over 13 days, compared to April's 106 mm (4.2 in) over 12 days. Furthermore, May’s humidity level is slightly lower at 69% compared to April's 78%. For more details on April's weather, you can refer to Princeton weather in April.
May and June present a transition in weather patterns, with June generally experiencing warmer temperatures. In May, temperatures range from a chilly minimum of 1°C (35°F) to a maximum of 35°C (94°F), with an average of 17°C (63°F). This month sees considerable precipitation, totaling 131 mm (5.1 in) over 13 days, while humidity remains at 69%. Conversely, June offers a milder minimum temperature of 9°C (48°F) and an increase in average temperatures to 22°C (73°F), peaking at 36°C (97°F). June is relatively drier, with 100 mm (3.9 in) of precipitation over 12 days, but maintains the same humidity level of 69%. For more details on the weather in June, visit Princeton weather in June.
May and July experience notable differences in weather patterns. May features a broader temperature range, with minimums dropping to around 1°C (35°F) and maximums climbing to 35°C (94°F), resulting in an average temperature of 17°C (63°F). In contrast, July maintains milder nights with a minimum of 13°C (56°F) and higher daytime warmth, averaging 26°C (78°F) and peaking at 37°C (98°F). Both months see considerable precipitation, with May recording 131 mm (5.1 in) and July slightly higher at 139 mm (5.5 in), though May has more humid conditions at 69% compared to July's 62%. For a closer look at July's weather, you can check out Princeton weather in July.
May and August exhibit distinct weather characteristics. In May, temperatures range from a cool minimum of 1°C (35°F) to a high of 35°C (94°F), with an average temperature of 17°C (63°F). This month experiences significant rainfall, totaling 131 mm (5.1 in) over about 13 days, along with a higher humidity level of 69%. In contrast, August has a milder temperature range, with a minimum of 14°C (57°F), an average of 24°C (76°F), and a maximum also reaching 35°C (96°F). Precipitation slightly increases to 135 mm (5.3 in) over 14 days, but humidity drops to a more comfortable 65%. For more details on the climate during this month, you can visit Princeton weather in August.
May and September both exhibit a wide temperature range, with maximums reaching similar heights of around 35°C (95°F). However, May experiences a lower average temperature of 17°C (63°F) compared to September's 21°C (70°F), indicating a gradual warming as summer approaches. Precipitation levels in May are significantly higher, with 131 mm (5.1 in) over 13 days, while September sees less rain at 87 mm (3.4 in) across just 10 days. Humidity remains fairly consistent between the two months, with May at 69% and September slight lower at 68%. For more detailed information, you can visit Princeton weather in September.
May and October present a fascinating contrast in weather patterns, despite their similar temperature ranges. In May, temperatures can soar to a maximum of 35°C (94°F), with an average of 17°C (63°F) and notable rainfall totaling 131 mm (5.1 in) over approximately 13 days. The humidity level is around 69%, contributing to a warm and often muggy atmosphere. Conversely, October's weather mirrors May with a maximum high of 35°C (96°F) and a slightly lower average of 16°C (61°F). It experiences less rainfall at 121 mm (4.8 in) over about 10 days, but with higher humidity at 74%, creating a different kind of heaviness in the air. For more details, you can check Princeton weather in October.
May and November showcase distinct differences in weather patterns. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 35°C (94°F), averaging around 17°C (63°F). The month experiences significant precipitation, with 131 mm (5.1 in) of rain over 13 days and an average humidity of 69%. In contrast, November presents much cooler conditions, with temperatures dropping to a minimum of -9°C (15°F) and peaking at 25°C (77°F), averaging 8°C (46°F). Rainfall in November is less intense, totaling 83 mm (3.3 in) over 9 days, and humidity rises to 82%. To explore more about weather patterns in November, you can check Princeton weather in November.
May and December exhibit contrasting weather patterns, reflecting the transitional nature of the seasons. In May, temperatures range from a cool 1°C (35°F) to a warm 35°C (94°F), with an average of 17°C (63°F). This month experiences relatively high humidity at 69% and a total precipitation of 131 mm (5.1 in) over 13 days, indicating frequent rain showers. In stark contrast, December brings colder conditions with a minimum temperature of -12°C (11°F) and an average of just 4°C (39°F), peaking at 19°C (67°F). While December has lower precipitation at 104 mm (4.1 in) across 10 days, the humidity increases to 80%, contributing to a chillier atmosphere. For more details, you can check out Princeton weather in December.
As May unfolds in Princeton, the weather showcases a delightful transition from the lingering chill of early spring to the warmth of approaching summer. This month stands out with temperature swings, where you might experience a balmy day reaching up to 35°C, contrasting sharply with the cooler nights that can dip to 1°C. Additionally, May brings with it a notable increase in humidity, settling at 69%, and a fair amount of rain, averaging about 13 days of precipitation. This combination of warmer temperatures and moisture creates a unique climate that invigorates the landscape, making it a vibrant time to explore the beauty of Princeton. For more comprehensive insights on what to expect throughout the year, check out Princeton Climate.