Last updated: February 24, 2025
June in National Harbor, United States ushers in the warmth of summer, with temperatures soaring to a maximum of 37°C (98°F) and settling at a comfortable average of 24°C (76°F). While visitors bask in the heat, the month also brings occasional rainfall, contributing to a total precipitation of 107 mm (4.2 in) over 13 days. With humidity levels hovering around 79%, the air feels quite sticky, adding to the classic summer experience. Whether you're exploring outdoor attractions or enjoying waterfront activities, be prepared for a mix of sunny days and refreshing showers.
In June, National Harbor enjoys a delightful transition into summer, with temperatures significantly warming up compared to the earlier months. The minimum temperature settles at a comfortable 9°C (49°F), while the average rises to a pleasant 24°C (76°F), and the maximum can soar to a sizzling 37°C (98°F). This month exhibits a notable increase from the cooler spring months, reflecting a pattern of rising temperatures towards the peak summer season. With bright skies and an abundance of outdoor activities, June beckons residents and visitors alike to revel in the long, sun-filled days. It's the perfect time to explore everything National Harbor has to offer as the temperatures rise and the atmosphere becomes vibrant with summer energy.
In June, National Harbor experiences a moderate level of precipitation, with 107 mm (4.2 in) of rainfall spread over 13 days. This marks a slight decline from the preceding month of May, which recorded the highest rainfall of the year at 121 mm (4.8 in). As summer takes hold, June's rainfall begins to set the stage for the upcoming wetter months, particularly July and August, known for their increased precipitation, with 132 mm (5.2 in) and 146 mm (5.7 in) respectively. The trend suggests that while June is relatively wet, it paves the way for even more significant rainfalls ahead, making it a pivotal month in the transition to summer's more intense weather patterns.
In June, National Harbor experiences a slight dip in humidity, averaging 79%, continuing a trend of gradual decrease from the wetter winter months. As spring transitions into summer, the humidity starts to decline from the higher levels of 81% in April and 78% in May. This shift marks a noticeable turn as the region moves into the hotter summer months, with July and August seeing even lower humidity levels of 74% and 72% respectively. The change hints at a more comfortable atmosphere for outdoor activities, making June an ideal time to enjoy the vibrant waterfront while still retaining enough moisture in the air to prevent an overly dry environment.
In June, the UV Index in National Harbor, United States, reaches a peak of 10, indicating a very high risk of harm from unprotected sun exposure. This consistent level reflects a growing trend toward increased UV radiation as summer approaches, aligning with May's readings. With a burn time of just 15 minutes, it's crucial for residents and visitors to take precautions, such as seeking shade and applying sunscreen regularly. This pattern continues into July, maintaining the same high UV levels, before slightly tapering off in August. For those planning outdoor activities, understanding these trends is vital to ensure safety and enjoyment under the summer sun. For more details, visit National Harbor UV Index.
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In June, National Harbor shines brightly with an impressive 331 hours of sunshine, marking it as the peak of the year. This sun-drenched month follows a steady upward trajectory, starting from a modest 153 hours in January and gradually rising as spring unfolds. By the time we reach May with 286 hours, anticipation builds for summer's arrival. June's radiant days set the stage for July, which takes the lead with 357 hours, but still, June holds its own as a delightful celebration of warm, sunlit moments. As summer progresses, the sunlight begins to taper off, signaling the shift towards a cozy autumn, yet June remains a highlight, embodying the essence of long, sunny days and vibrant outdoor experiences.
June in National Harbor, United States, typically enjoys sunny spells, although the likelihood stands at 39%—lower than several months preceding it. This marks a shift from the more promising sunny chances seen in March (52%) and April (49%), indicating that early summer can be a bit unpredictable. Interestingly, while July rebounds to 49%, August dips further to 35%, suggesting that early summer might deliver more sun compared to later months. The trend reveals a certain inconsistency as the calendar progresses, with even September showing a 55% chance of sunshine, hinting at a potential late-summer revival. Thus, while June may not guarantee abundant sun, it remains a pivotal month, bridging the gap between spring's brighter days and the dog days of summer.
In National Harbor, June marks the peak of daylight, offering an inviting 14 hours of sun-kissed moments. Following a steady rise from 9 hours in January to 14 hours in both May and June, this month mirrors the warmth and vibrancy of early summer. As the year progresses, daylight begins its gentle decline, tapering off to 13 hours in August and gradually diminishing through the fall. This pattern underscores a seasonal rhythm, where the initial burst of sunlight in the spring transitions into the cozy embraces of autumn, making each day uniquely rich in experience and opportunity. Enjoying the long June days is a perfect invitation to revel in the beauty of nature and outdoor adventures.
In June, the average wind speed in National Harbor dips slightly to 2.5 m/s (6 mph), marking a continuation of the mild breezes that began in the earlier months. This gradual decline from spring, where winds consistently hovered around 3.2 m/s, reflects a trend towards calmer conditions as summer approaches. Following June, the winds are expected to taper further into July and August, with average speeds decreasing to 2.3 m/s (5 mph) and 1.9 m/s (4 mph), respectively. This shift invites a serene atmosphere perfect for waterfront activities, showcasing how the gentle winds of summer offer a peaceful respite from the more vigorous gusts of spring.
The weather in National Harbor changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of June's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in National Harbor and find detailed weather information for every month.
In June, the weather is typically warm, with temperatures ranging from a chilly 9°C (49°F) to a scorching 37°C (98°F), and an average temperature of 24°C (76°F). This month also experiences significant rainfall, accumulating 107 mm (4.2 in) over about 13 days, while humidity levels sit at a comfortable 79%. In contrast, January presents a starkly different climate, with frigid temperatures plunging to a minimum of -14°C (7°F) and a modest average of just 3°C (38°F). The maximum temperature reaches a milder 22°C (71°F), but the month sees less precipitation, totaling 61 mm (2.4 in) over about 7 days, alongside slightly higher humidity at 84%. For more insights on the cold snap, check out National Harbor weather in January.
June and February present starkly contrasting weather conditions. In June, temperatures range from a cool 9°C (49°F) to a scorching high of 37°C (98°F), with an average temperature of 24°C (76°F). This month also experiences significant rainfall, with 107 mm (4.2 in) over 13 days and a humidity level of 79%. In sharp contrast, February offers much colder temperatures, with a minimum of -14°C (7°F), an average of just 5°C (42°F), and a maximum of 27°C (81°F). The precipitation is slightly lower at 96 mm (3.8 in) over 11 days, and humidity is slightly higher at 83%. For a deeper look into February weather specifics, you can check out National Harbor weather in February.
When comparing the weather in June and March, it's clear that June is significantly warmer, with average temperatures around 24°C (76°F) compared to March's cooler average of 8°C (47°F). While June can reach maximum highs of 37°C (98°F), March's temperatures peak at a milder 29°C (84°F). Additionally, June experiences more rainfall, with 107 mm (4.2 in) over 13 days, whereas March has 82 mm (3.2 in) across just 9 days. Interestingly, both months have high humidity levels, with June at 79% and March slightly higher at 83%. For a closer look at typical conditions in March, visit National Harbor weather in March.
When comparing the weather in June and April, it's clear that June is significantly warmer, with average temperatures ranging from 9°C (49°F) to a scorching maximum of 37°C (98°F), while April experiences cooler averages between -1°C (31°F) and a maximum of 33°C (92°F). Both months have similar levels of precipitation, with June receiving 107 mm (4.2 in) over 13 days and April slightly less at 102 mm (4.0 in) over 11 days. Humidity is fairly high in both months, but slightly lower in June at 79% compared to 81% in April. For those looking for more specific details on weather patterns in April, you can check National Harbor weather in April.
In comparing the weather between May and June, we see a notable increase in temperature and a slight decrease in precipitation. June experiences a minimum temperature of 9°C (49°F) and an average high of 24°C (76°F), peaking at 37°C (98°F), whereas May's temperatures range from a minimum of 3°C (37°F) to a maximum of 35°C (95°F) with an average of 19°C (67°F). Additionally, while precipitation in June totals 107 mm (4.2 in) over 13 days, May has slightly higher precipitation at 121 mm (4.8 in) across 12 days. Humidity remains comparable, with June at 79% and May at 78%. For more details on May's weather, you can visit National Harbor weather in May.
In comparing the weather between June and July, we see a noticeable increase in temperatures, with July featuring a minimum of 16°C (61°F), an average of 27°C (81°F), and a maximum of 38°C (102°F), compared to June's cooler temperatures of 9°C (49°F), an average of 24°C (76°F), and a maximum of 37°C (98°F). Additionally, July experiences slightly higher overall precipitation at 132 mm (5.2 in) over 12 days, whereas June saw 107 mm (4.2 in) of rainfall across 13 days. Humidity levels also decline from 79% in June to 74% in July, suggesting a potentially more comfortable atmosphere in the latter month. For a closer look at the specific weather conditions in July, you can check National Harbor weather in July.
When comparing the weather between June and August, June tends to be warmer with a lower minimum temperature of 9°C (49°F) and an average high of 37°C (98°F), whereas August sees a higher minimum temperature of 15°C (59°F) and maintains a similar average maximum of 37°C (99°F). Precipitation levels are notably higher in August, with 146 mm (5.7 in) falling over 15 days, compared to June's 107 mm (4.2 in) over 13 days. Additionally, humidity levels are slightly higher in June at 79%, while August experiences a more comfortable 72%. For a closer look at August weather specifics, visit National Harbor weather in August.
June and September exhibit some notable differences in weather patterns. June tends to be warmer, with an average temperature of 24°C (76°F) and maximums soaring up to 37°C (98°F), while September's average cools down to 22°C (73°F) despite similar peak temperatures of 37°C (99°F). Precipitation is slightly higher in June, totaling 107 mm (4.2 in) over an average of 13 days, compared to September's 93 mm (3.7 in) over 11 days. Additionally, June has a higher humidity level at 79%, while September's humidity stands at 75%. For more insights on September weather, check out this link: National Harbor weather in September.
June and October present distinct weather patterns, with June generally warmer and more humid. In June, temperatures range from a minimum of 9°C (49°F) to an average of 24°C (76°F), peaking at a maximum of 37°C (98°F). Meanwhile, October sees cooler temperatures, with a minimum of 2°C (36°F) and an average of 17°C (63°F), although it can still reach up to 36°C (97°F). Precipitation levels are quite similar in both months, with June receiving 107 mm (4.2 in) over 13 days compared to October's 105 mm (4.2 in) over just 9 days. Humidity slightly increases in October, reaching 81% compared to June's 79%. For a closer look at October's weather specifics, you can read more here: National Harbor weather in October.
June and November offer strikingly different weather patterns. In June, temperatures can soar, with average highs around 24°C (76°F) and peaks reaching up to 37°C (98°F), providing a warm and humid climate with an average humidity of 79%. Rainfall is relatively frequent, with about 107 mm (4.2 in) of precipitation spread over 13 days. In contrast, November brings much cooler temperatures, where the average hovers around 9°C (48°F), with lows dipping to -5°C (23°F) and highs peaking at 26°C (78°F). Precipitation decreases to 77 mm (3.0 in) over just 7 days, and humidity remains high at 85%. For a detailed look at the climate during this month, check out National Harbor weather in November.
June and December present stark contrasts in weather, highlighting the diversity of the seasons. In June, temperatures range from a minimum of 9°C to a sweltering maximum of 37°C, with an average of 24°C, accompanied by significant humidity at 79%, leading to a warm and sometimes muggy atmosphere. The month experiences around 107 mm of precipitation spread over 13 days, hinting at the occasional rain showers typical of summer.
In contrast, December's climate is decidedly colder, with temperatures dropping to a minimum of -10°C and reaching a maximum of 20°C, averaging just 5°C. This month sees less precipitation at 89 mm over 9 days, but the humidity remains relatively high at 84%, contributing to a chillier feel in the air. For a closer look at December weather specifics, visit National Harbor weather in December.
June in National Harbor ushers in a vibrant transition, characterized by warmer temperatures and a noticeable increase in humidity, setting it apart from the cooler months that precede it. While the average climate may be mild, the potential for heat spikes intensifies, inviting both locals and visitors to embrace outdoor activities. However, June also tends to bring about occasional rain, with precipitation spanning several days throughout the month, balancing the sun-soaked afternoons. This mix of warmth and moisture creates a lush and lively atmosphere, redefining the region’s landscape. For a deeper dive into the climate patterns throughout the year, visit National Harbor Climate.