Last updated: February 24, 2025
March in Portland, Oregon captivates the senses with its vibrant transition into spring. Average temperatures hover around a crisp 8°C (46°F), peaking at a warm 24°C (75°F) on the hottest days, while occasionally dipping to a chilly -4°C (26°F). This month brings 135 mm (5.3 in) of precipitation spread over 17 days, resulting in an 85% humidity level that envelops the city in a misty embrace. As winter gradually recedes, Portland transforms into a lush backdrop, where every raindrop nourishes budding flowers and invigorates the landscape, making March a month of renewal and anticipation.
In March, Portland begins to shake off winter's chill, with temperatures gradually rising from an average low of -4°C (26°F) to a pleasant high of 24°C (75°F). This month marks a noticeable shift in the climate, showcasing the first signs of spring, as the average temperature settles around a comfortable 8°C (46°F). The days grow longer and warmer, enticing residents and visitors alike to embrace the outdoors. With the transition from winter to spring, March not only heralds milder weather but also a vibrant atmosphere filled with blooming flowers and renewed energy. This upward trend in temperatures continues into the following months, priming Portland for a delightful seasonal change.
March in Portland marks a transitional period in precipitation patterns, with an average rainfall of 135 mm (5.3 in) spread over 17 days. This is a noticeable decrease from the heavier downpours of January and February, which recorded 163 mm and 172 mm, respectively. As winter yields to spring, the frequency of wet days begins to wane, setting the stage for the drier months ahead. The dip in precipitation not only heralds the arrival of sunnier days but also reflects a broader trend of gradually diminishing rainfall, paving the way for the milder conditions of April and May. The overall pattern illustrates Portland’s characteristic evolution from the winter deluge to the more temperate, yet still unpredictable, spring climate.
March in Portland sees a return to steady humidity levels, with an average of 85%, mirroring the dampness felt in January and February. This consistency hints at the city's notoriously rainy climate, where moisture in the air often lingers through the early spring months. As the season transitions into April, humidity dips slightly to 83%, setting the stage for a gradual drying trend as summer approaches. Interestingly, while the spring maintains higher humidity, the summer months experience a decrease, with July and August dropping to 82% and 74% respectively. This rhythm of humidity underscores Portland's unique weather patterns, where the lushness of winter gives way to the crispness of summer, all tied together by a persistent, soothing moisture in the spring.
As the calendar turns to March, Portland experiences a noticeable uptick in UV Index levels, rising to 5, indicative of moderate exposure risk. This shift is part of a broader trend as spring approaches, with the burn time decreasing to 30 minutes—the same as in February. Notably, this increase in UV exposure will continue into April, when the index reaches 6 and the burn time shortens further to 25 minutes. With each passing month, awareness of UV protection becomes increasingly important, especially as we prepare for the sunlight of summer. For more details on how to safeguard your skin, visit Portland UV Index.
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As March arrives in Portland, the city experiences a significant boost in sunshine, basking in 195 hours of bright daylight—a noticeable leap from the 123 hours recorded in February. This upward trend marks the beginning of spring, offering residents a refreshing contrast to the gloomy winter months. With each passing month, the days grow longer and brighter, culminating in a peak of 374 hours of sunshine by July. As Portlanders anticipate the warming embrace of summer, March serves as a delightful reminder of the sunnier days to come, invigorating the spirit and inspiring outdoor adventures.
As winter gives way to spring, March in Portland signals a notable shift in the likelihood of sunny weather, with 38% of the days featuring sunshine. This marks a significant increase from the gloomy conditions of January and February, which hover around 16% and 17%, respectively. The trend continues upward as April approaches, boasting a promising 54% chance of sun. This gradual rise not only heralds the end of the dreary winter months but also sets the stage for the sunnier days of late spring and early summer. With March acting as a turning point, Portlanders can expect to see more sunlight breaking through the clouds, making it an ideal time to embrace the outdoors.
As winter fades and spring begins to unfold, March in Portland brings a welcome increase in daylight, boasting a total of 11 hours. This gradual transition from the shorter days of winter—where January and February offer just 9 and 10 hours respectively—signals a shift towards more sunlit hours, culminating in the lush vibrancy of spring. Each month sees an upward trend; by April, daylight extends to 13 hours, and the promise of summer shines brightly with 14 hours in May and 15 hours in June and July. As the year progresses, the rhythm of daylight ebbs in late summer, only to return again, creating a cycle that shapes life in this dynamic city.
March in Portland typically experiences a gentle breeze, with an average wind speed of 2.2 m/s (5 mph)—a slight dip compared to the previous months. This consistent airflow continues into April, where the winds remain steady, reinforcing a sense of calm as winter transitions to spring. Although March's winds are slightly lower than January and February, the overall trend showcases a relatively stable atmospheric pattern throughout these months. As the seasons shift, the breeziness tends to fluctuate subtly, but the overall experience remains mild, making it a delightful time for residents and visitors to enjoy the city's outdoor charm.
The weather in Portland 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 Portland and find detailed weather information for every month.
March and January present stark contrasts in weather patterns. In March, temperatures range from a chilly minimum of -4°C (26°F) to a pleasant maximum of 24°C (75°F), with an average of 8°C (46°F). The month sees an average precipitation of 135 mm (5.3 in) over 17 days, accompanied by consistently high humidity at 85%. In comparison, January experiences colder temperatures, with a minimum of -14°C (7°F) and a maximum of 15°C (59°F), averaging 5°C (42°F). Although January has slightly higher precipitation at 163 mm (6.4 in) over the same number of days, it shares the same humidity level of 85%. For a deeper look at January's weather, you can refer to Portland weather in January.
March generally experiences milder temperatures compared to February. While February sees minimum temperatures dropping to -7°C (19°F) and an average of 5°C (41°F), March's minimum increases to -4°C (26°F) with an average of 8°C (46°F). Additionally, March can reach a maximum of 24°C (75°F), significantly warmer than February's maximum of 17°C (63°F). However, March also brings about 135 mm (5.3 in) of precipitation over 17 days, slightly less than February's 172 mm (6.8 in) over 19 days. The humidity remains relatively consistent between the two months, with March at 85% and February at 84%. For a detailed look at February weather, you can refer to Portland weather in February.
March and April in Portland showcase a notable transition in weather patterns. In March, temperatures range from a chilly minimum of -4°C (26°F) to a comfortable maximum of 24°C (75°F), with an average temperature of 8°C (46°F). The month experiences significant rainfall, totaling 135 mm (5.3 in) over 17 days, alongside high humidity levels of 85%. In contrast, April brings milder conditions with a minimum temperature of -1°C (31°F) and a maximum of 29°C (84°F), raising the average to 11°C (51°F). Precipitation decreases slightly to 117 mm (4.6 in) over 15 days, and humidity levels drop to 83%. This shift marks a promising move towards warmer and drier days. For more detailed insights, you can explore Portland weather in April.
When comparing the weather in March and May, one can observe significant differences in temperature and precipitation. In March, temperatures range from a chilly minimum of -4°C (26°F) to a pleasant maximum of 24°C (75°F), with an average of 8°C (46°F). The month is quite wet, receiving 135 mm (5.3 in) of precipitation over 17 days, and maintaining high humidity at 85%. In contrast, May brings milder weather with temperatures ranging from a minimum of 2°C (36°F) to a warmer maximum of 32°C (90°F), averaging 14°C (58°F). Precipitation decreases to 58 mm (2.3 in) over just 10 days, and humidity is slightly lower at 83%. For a more detailed look at what to expect in May, check out this link: Portland weather in May.
March and June present contrasting weather patterns. In March, temperatures can dip as low as -4°C (26°F) at night, with an average of 8°C (46°F) and highs reaching 24°C (75°F). The month is characterized by significant precipitation, totaling 135 mm (5.3 in) over approximately 17 days, contributing to a high humidity level of 85%. In contrast, June offers a milder climate, with minimum temperatures around 6°C (43°F) and an average of 18°C (64°F), peaking at an impressive 47°C (118°F) on particularly hot days. Rainfall is considerably reduced, amounting to only 46 mm (1.8 in) across just 8 days, and humidity slightly decreases to 83%. This shift indicates a transition from the cool, dampness of early spring to the warmer, drier conditions of early summer. For more details, check out Portland weather in June.
The weather in March features a broader temperature range, with a minimum of -4°C (26°F) and a maximum of 24°C (75°F), averaging around 8°C (46°F). Additionally, March experiences significant precipitation, with 135 mm (5.3 in) over 17 days and humidity levels around 85%. In contrast, July showcases much warmer conditions, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 37°C (99°F), averaging 21°C (69°F). Rainfall is markedly lower in July, with only 6 mm (0.2 in) of precipitation over just 1 day and a humidity level of 82%. For a closer look at the specifics, you can check out Portland weather in July.
March and August present starkly contrasting weather profiles. In March, temperatures can drop as low as -4°C (26°F), with an average temperature of 8°C (46°F) and highs reaching up to 24°C (75°F). This month is marked by significant precipitation, totaling 135 mm (5.3 in) over about 17 days, accompanied by high humidity levels at 85%. In contrast, August enjoys much milder conditions, with minimum temperatures of 9°C (48°F) and an average of 21°C (70°F), peaking at a sweltering 40°C (104°F). The summer month is notably drier, with only 8 mm (0.3 in) of rain across just 2 days and lower humidity at 74%. For a closer look at the conditions in August, check out Portland weather in August.
March and September present contrasting climates, with March experiencing a wider range of temperatures from a chilling minimum of -4°C (26°F) to a pleasant average of 8°C (46°F) and a maximum of 24°C (75°F). In contrast, September tends to be much warmer, with temperatures ranging from a minimum of 6°C (42°F) to an average of 18°C (64°F) and peaking at a high of 35°C (95°F). Additionally, March is significantly wetter, receiving 135 mm (5.3 in) of precipitation over 17 days, while September sees a drier climate with just 62 mm (2.4 in) over 8 rainy days. Humidity levels also differ, with March experiencing a higher humidity of 85% compared to September's 71%. For a detailed look at what to expect in September, check out Portland weather in September.
When comparing the weather in March and October, we see some notable differences. March typically has a broader temperature range, with minimums dropping to -4°C (26°F) and maximums reaching up to 24°C (75°F), averaging about 8°C (46°F). In contrast, October boasts slightly milder conditions, with minimum temperatures around -2°C (29°F) and maximums hitting 26°C (79°F). The average temperature in October is higher, sitting at 12°C (53°F). Additionally, March experiences more rainfall, with 135 mm (5.3 in) over 17 days, while October sees less precipitation at 105 mm (4.1 in) across 12 days. Humidity levels are also slightly lower in October at 81% compared to March’s 85%. For more details on weather patterns, check this link: Portland weather in October.
March and November exhibit notable similarities and differences in their weather patterns. In March, temperatures range from a chilly -4°C (26°F) at night to a mild 24°C (75°F) during the day, with an average of 8°C (46°F). This month experiences significant precipitation, totaling 135 mm (5.3 in) over approximately 17 days, accompanied by a high humidity level of 85%.
Conversely, November tends to be slightly cooler, featuring minimum temperatures around -5°C (24°F) and a maximum of 19°C (67°F), with an average similar to March at 8°C (47°F). The total precipitation in November increases to 155 mm (6.1 in) over 18 days, with humidity rising slightly to 87%. Overall, while both months share moderate temperatures and considerable rainfall, November sees a decrease in maximum temperatures and an increase in precipitation. For more insights, visit Portland weather in November.
In March, the weather begins to warm with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 24°C (75°F), averaging around 8°C (46°F). The month experiences approximately 135 mm (5.3 in) of precipitation over 17 days, with a humidity level of 85%. In contrast, December is cooler, with temperatures dipping to a minimum of -5°C (24°F) and reaching a maximum of 16°C (60°F), averaging 5°C (41°F). December sees more substantial precipitation at about 183 mm (7.2 in) over 19 days, accompanied by a slightly higher humidity level of 87%. For more details on December conditions, check out Portland weather in December.
March in Portland heralds the transition from winter's chill to spring's promise, offering a dynamic mix of mild temperatures and variable precipitation. With the average temperature inching upward, residents can expect more moderate days, though brisk mornings and cooler nights still linger. The increased rainfall and higher humidity levels mark a notable shift from the drier winter months, as Portland prepares to burst into vibrant blooms and lush greenery. This month stands out for its frequent rain showers, which can transform the landscape but also encourage a spirit of resilience. To better understand what to expect throughout the year, delve into the complete overview of the city's weather patterns at Portland Climate.