Last updated: February 24, 2025
May weather in Rainier, United States showcases a vibrant transition into spring. With maximum temperatures soaring up to 30°C (86°F) and a comfortable average of 13°C (56°F), residents can enjoy warmth alongside the refreshing coolness of the minimum temperatures dipping to 5°C (41°F). However, May is also marked by 84% humidity, creating a lush atmosphere. The region experiences 62 mm (2.5 in) of precipitation over 11 days, contributing to its scenic beauty. This combination of temperatures and moisture sets the stage for lively outdoor activities while reminding us to embrace the unpredictable nature of springtime weather.
May in Rainier, United States, marks a vibrant transition into spring, showcasing a delightful range of temperatures. With a minimum of 5°C (41°F) and a pleasant average of 13°C (56°F), residents begin to relish the warmth as the month progresses. The maximum temperature peaks at 30°C (86°F), offering inviting days perfect for outdoor activities. This upward trend from the cooler months of April and earlier highlights May as a significant turning point, where the lingering chill of winter gives way to the burgeoning warmth of summer, making it an ideal time for exploration and recreation in the beautiful landscapes of Rainier.
In May, Rainier experiences a notable shift in precipitation, with rainfall totaling 62 mm (2.5 in) over approximately 11 days. This marks a significant decline from the heavy downpours of the earlier months, as April saw 116 mm (4.6 in) across 15 days. The transition into late spring typically brings a welcome break from the persistent rain of winter and early spring, hinting at the impending drier summer months ahead. Interestingly, this trend continues into June, where precipitation further decreases to 52 mm (2.1 in), paired with just 8 rainy days. As nature gradually shifts towards sunnier days, the gentle May rains serve as a reminder of the seasonal changes and the unique climate of the region.
As spring transitions into summer, May in Rainier, United States experiences a humidity level of 84%, maintaining the trend of slightly lower humidity compared to the winter months. This modest drop from earlier in the year, where humidity hovered around 86% in January and 83% in April, reflects a consistent pattern as the seasons shift. Typically, May's humidity remains on par with the following months, like June, which maintains the same level of 84%. This stability contributes to the region's lush greenery and a refreshing atmosphere, making it an inviting time for outdoor activities before the summer heat begins to set in.
As the warmth of May settles in Rainier, the UV Index climbs to 8, marking a shift to the very high exposure category, with a burn time of just 15 minutes. This trend reflects a noticeable increase in UV radiation, following the rising pattern seen from earlier months. Compared to April's UV Index of 6, May calls for heightened awareness and protective measures to safeguard against sunburn. The strong sunshine in late spring foreshadows an even more intense June and July, which maintain a UV Index of 9. Now is the time to prioritize sun safety and prepare for a sun-drenched summer ahead. Stay informed about your UV exposure levels at Rainier UV Index.
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May in Rainier, United States, is a radiant delight, boasting an impressive 299 hours of sunshine. This vibrant month marks a significant leap from the 227 hours in April, setting the stage for the sunniest months of the year. As the days grow longer, the warm embrace of June follows with 312 hours, indicating that the sunshine trend is firmly on the rise. This pattern continues into the peak summer months, with July reaching a glorious 364 hours—an inviting prospect for outdoor enthusiasts. While the sunshine gradually wanes in the latter part of the year, the brilliant May days serve as a cherished reminder of the warmth and vitality that the Pacific Northwest can offer before the coolness of autumn sets in.
In Rainier, the likelihood of sunny weather in May sits at 35%, indicating a transitional month as spring edges toward summer. While this figure reflects a notable dip from April's impressive 48%, it still surpasses the chances seen in the earlier months of the year, which hover around 13% to 31%. May serves as a bridge to sunnier days, with the approaching June forecast showing a promising 55% chance of sun. This trend highlights an encouraging upward trajectory as the region moves towards the peak of summer, offering residents and visitors alike a taste of the brighter days to come.
As spring gives way to summer, May in Rainier, United States shines brightly with an impressive 15 hours of daylight, making it one of the sunniest months of the year. This significant increase in daylight follows the steady rise from 8 hours in January to 13 hours in April, reflecting the gradual elongation of days that characterizes the season. Notably, May not only matches June's daylight duration but also foreshadows the warm summer months ahead, where July and August maintain this bright trend. With such extended daylight, May invites residents and visitors alike to enjoy a plethora of outdoor activities, basking in the rejuvenating sunshine that signals the heart of spring's transition into summer.
In May, the winds in Rainier, United States, continue the trend of gentle breezes that characterize the early spring months, with an average speed of 2.5 m/s (6 mph). This marks a steady yet unobtrusive shift from the slightly brisker winds of February and November, which peak at 3.4 m/s (7 mph). Throughout the year, wind speeds remain relatively tame, oscillating between 2.3 and 3.4 m/s, creating a calm and serene atmosphere ideal for outdoor activities. As summer approaches, the gradual decline in wind speed from April’s breezy 2.5 m/s invites a sense of tranquility, emphasizing Rainier's unique charm amidst its scenic landscapes.
The weather in Rainier 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 Rainier and find detailed weather information for every month.
May and January present stark contrasts in weather conditions. In May, temperatures can range from a minimum of 5°C (41°F) to a pleasant maximum of 30°C (86°F), with an average of 13°C (56°F). This month also sees relatively low precipitation, totaling 62 mm (2.5 in) over about 11 days, accompanied by a high humidity level of 84%. Conversely, January is much colder, with temperatures dipping as low as -6°C (22°F) and only reaching a maximum of 14°C (57°F), averaging 5°C (42°F). Rainfall is significantly higher during this month, with 185 mm (7.3 in) occurring across about 17 days, and humidity remains similar at 86%. For a deeper insight into January weather patterns, see Rainier weather in January.
May and February present stark contrasts in weather patterns. In May, temperatures begin to rise, with minimums averaging around 5°C (41°F) and peaks reaching as high as 30°C (86°F), while February experiences cooler temperatures, ranging from a minimum of -5°C (24°F) to a maximum of 14°C (58°F). Additionally, February is characterized by significantly higher precipitation, totaling 163 mm (6.4 in) over 17 days, compared to May's 62 mm (2.5 in) over 11 days. Despite similar humidity levels of 84% in both months, May offers a much more pleasant climate for outdoor activities. For more details on February weather, you can check out Rainier weather in February.
In comparing the weather of March and May, we see notable differences in both temperature and precipitation patterns. March experiences a wider temperature range with a minimum of -1°C (31°F) and an average of 7°C (45°F), peaking at 23°C (73°F). Conversely, May displays warmer averages, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 30°C (86°F). Precipitation is also more pronounced in March, with 131 mm (5.2 in) falling over 17 days compared to May's 62 mm (2.5 in) across 11 days. Interestingly, humidity levels remain relatively similar, sitting at 85% in March and 84% in May. For a more detailed look at the conditions, you can check Rainier weather in March.
In comparing the weather patterns of April and May, we see a noticeable warming trend as spring progresses. April experienced a minimum temperature of -1°C (31°F) and an average of 10°C (50°F), while May's temperatures ranged from a minimum of 5°C (41°F) to an average of 13°C (56°F). May also saw a significant spike in maximum temperatures, reaching up to 30°C (86°F) compared to April's peak of 24°C (75°F).
However, April had higher precipitation levels, with 116 mm (4.6 in) over 15 days, compared to May's 62 mm (2.5 in) over 11 days. The humidity remained relatively stable between the two months, with April at 83% and May at 84%. For a more in-depth look at conditions during April, you can visit Rainier weather in April.
May and June show a notable transition in weather patterns. In May, temperatures range from a minimum of 5°C (41°F) to a maximum of 30°C (86°F), with an average of 13°C (56°F). The month sees about 62 mm (2.5 in) of precipitation over 11 days, maintaining a humidity level of 84%. In contrast, June experiences higher temperatures, with a minimum of 7°C (45°F) and a maximum soaring to 38°C (101°F), averaging around 16°C (61°F). While June has slightly less precipitation at 52 mm (2.1 in) over 8 days, the humidity remains consistent at 84%. For more details on June weather, you can explore Rainier weather in June.
In May, the weather exhibits a wider temperature range with minimums dropping to 5°C (41°F) and maximums peaking at 30°C (86°F), accompanied by higher precipitation levels of 62 mm (2.5 in) over 11 days, resulting in a relatively humid environment at 84%. In contrast, July showcases milder minimum temperatures of 10°C (50°F) and a more stable average of 19°C (66°F), with maximum temperatures reaching 33°C (91°F). Precipitation in July is significantly lower, at just 10 mm (0.4 in) over only 2 days, and humidity remains slightly less at 82%. For more details on the climate, you can visit Rainier weather in July.
When comparing the weather in May and August, there are noticeable differences in temperature and precipitation patterns. In May, temperatures range from a chilly 5°C (41°F) to a warm 30°C (86°F), with an average of 13°C (56°F). This month experiences considerable rainfall, with 62 mm (2.5 in) spread over 11 days, contributing to a high humidity level of 84%. In contrast, August offers warmer temperatures, with a minimum of 10°C (50°F), an average of 19°C (66°F), and a maximum reaching 34°C (94°F). Additionally, August is much drier, boasting only 13 mm (0.5 in) of precipitation over 3 days and a lower humidity of 73%. For more details on weather conditions, you can check Rainier weather in August.
May and September both feature similar maximum temperatures around 30°C (86°F), but September tends to have a slightly higher average temperature of 16°C (62°F) compared to May's 13°C (56°F). While May experiences more humidity at 84%, September has a drier feel with a humidity level of 74%. In terms of rainfall, September receives more precipitation at 85 mm (3.4 in) over 10 days, compared to May's 62 mm (2.5 in) across 11 days. For a closer look at September's weather, visit Rainier weather in September.
May and October present distinctly different weather profiles. In May, temperatures typically range from a minimum of 5°C (41°F) to a maximum of 30°C (86°F), with an average of 13°C (56°F). The month experiences about 62 mm (2.5 in) of precipitation spread over 11 days and maintains a relatively high humidity level of 84%. In contrast, October sees cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 24°C (75°F), averaging 11°C (52°F). Rainfall is more pronounced in October, with 134 mm (5.3 in) occurring over 13 days, while humidity remains similar at 83%. Overall, October's weather tends to be more variable and wetter compared to the warmth of May. For more details, you can refer to Rainier weather in October.
In comparing the weather between May and November, it’s clear that each month has its unique characteristics. May typically experiences warmer temperatures, ranging from a minimum of 5°C (41°F) to a maximum of 30°C (86°F), with an average of 13°C (56°F). In contrast, November sees cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 17°C (62°F), averaging at 8°C (46°F).
Precipitation also varies significantly; May receives about 62 mm (2.5 in) over approximately 11 days, while November experiences a heavier rainfall of 182 mm (7.2 in) across 17 days, contributing to the month’s higher humidity levels, which are similar in both months at around 84-86%. For more specific details about the rainy conditions in November, you can visit Rainier weather in November.
May and December present contrasting weather patterns in terms of temperature and precipitation. In May, temperatures can range from a mild 5°C (41°F) at night to a warm 30°C (86°F) during the day, accompanied by a relatively low average precipitation of 62 mm (2.5 in) over 11 days. In contrast, December features much colder temperatures, with a minimum of -6°C (22°F) and a maximum of only 13°C (56°F), alongside significantly higher precipitation levels of 199 mm (7.8 in) over 18 days. Humidity remains fairly consistent, with May at 84% and December slightly higher at 87%. For more details on December weather, you can explore Rainier weather in December.
As spring gives way to summer, May at Rainier showcases a delightful shift in weather patterns. Temperatures begin to rise, offering a pleasant contrast to the cooler early months, yet the average temperature remains moderate compared to the summer peak, creating a refreshing balance. The month is characterized by increased humidity and more rainy days, while overall precipitation helps to nourish the lush landscape that surrounds the region. With 62 mm of rainfall over 11 days, May stands out as a transitional period, bridging the gap between the crispness of spring and the warmth of summer. For more in-depth information about Rainier's climate throughout the year, check out Rainier Climate.