Last updated: February 24, 2025
In August, West Yellowstone experiences a delightful range of temperatures, with daily highs reaching a warm 30°C (87°F) and averages settling around a comfortable 14°C (58°F). However, nights can be brisk, dipping to a chilly -1°C (30°F). The month sees an average precipitation of 36 mm (1.4 in) over approximately 8 days, contributing to the area's lush landscapes. Overall, with humidity hovering around 69%, August offers a perfect blend of warmth and refreshing coolness, ideal for outdoor adventures in this stunning national park setting.
In West Yellowstone, August marks the transition to warmer temperatures, featuring a minimum of -1°C (30°F) and reaching an average of 14°C (58°F), with highs peaking at around 30°C (87°F). This month stands out as one of the warmest, with conditions perfect for exploring the surrounding natural beauty. Compared to the chilling depths of winter, where temperatures can plunge as low as -29°C (-20°F) in December, August offers a refreshing contrast, inviting outdoor activities under the bright skies. Notably, the steady increase in temperatures from March through August showcases the welcoming embrace of summer, making it an ideal time for visitors to experience the vibrant landscape and abundant wildlife of this enchanting region.
In August, West Yellowstone experiences a modest increase in precipitation, accumulating around 36 mm (1.4 in) over approximately 8 days. This marks a slight uptick from the drier month of July, which only saw 29 mm (1.2 in) of rain over just 7 days. However, this level of moisture is considerably lower than the spring and early summer months, when April and May typically bring heavier rainfall. As summer fades into early autumn, the weather begins to transition, hinting at the wetter conditions of the upcoming months, such as September's projected 50 mm (2.0 in), demonstrating the region's dynamic climatic shifts. The relative dryness of August allows for clearer skies and pleasant temperatures, making it an ideal time for outdoor exploration amidst the stunning natural surroundings.
In West Yellowstone, August marks a notable shift in humidity, dipping to 69%—the lowest point of the year. This decline follows a gradual decrease from 93% in January, showcasing a steady drop throughout the summer months. With each passing season, humidity levels consistently ease, transforming the environment from the heavy moisture of winter to a more comfortable late summer atmosphere. As September approaches, humidity continues to fall, landing at 67%, hinting at the impending arrival of autumn. This trend underscores West Yellowstone's seasonal transitions, where visitors can enjoy warmer days with less humidity, making it an inviting time for outdoor exploration.
In August, West Yellowstone experiences a UV Index of 10, signaling a very high exposure level with a burn time of just 15 minutes—a slight decrease from the peak of 11 seen in the summer months of May through July. This trend shows that while August still warrants caution, it marks the beginning of a gradual reduction in UV intensity as the summer wanes. Following August, the UV Index dips further into September at 9, indicating that outdoor enthusiasts should remain vigilant even as the seasons shift. For anyone venturing out, understanding these fluctuations is key to enjoying the beautiful surroundings safely. For more information, visit West Yellowstone UV Index.
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August in West Yellowstone marks a delightful peak of summer sunshine, basking in 355 hours of radiant daylight. This month is a beautiful transition from the sun-drenched days of July, which boasts the highest sunlight at 396 hours. As summer intensifies, residents and visitors alike can enjoy a plethora of outdoor activities under the warm sun. Following August, the hours of sunlight begin to wane, with September bringing 293 hours. The trend of increasing daylight from the winter months reaches its zenith during these vibrant summer months, painting a picture of flourishing nature and endless adventures. August truly captures the essence of summer's farewell, offering a last chance to relish the sun before the cooler months set in.
In August, West Yellowstone enjoys a more favorable chance of sunny weather, with a 56% likelihood of sunshine that sits comfortably between the brighter days of late spring and summer. As the year progresses from January's 25% chance, the optimistic shift becomes evident, with March and April seeing a promising 48% chance, culminating in a peak of 74% in June. Although July slightly dips to 64%, August maintains a solid outlook, making it a wonderful time for outdoor enthusiasts to explore the stunning landscapes. The early autumn months of September brings a renewed 74% chance, hinting at a stretch of sunny days even as summer wanes. Thus, visitors in August can expect a delightful balance of sun-soaked adventures amid beautiful natural scenery.
In West Yellowstone, the daylight duration experiences a fascinating ebb and flow throughout the year. Starting with just 9 hours in January, the days gradually lengthen, peaking at 15 hours in both June and July—a time when the region basks in abundant sunlight. As August arrives, however, the daylight starts to wane, with 13 hours of light, signaling the transition toward autumn. This gradual reduction continues into September, as the days shorten to 12 hours. The trend is clear: from the bright heights of summer to the softer glow of fall, West Yellowstone beautifully showcases nature's rhythm with its changing daylight across the seasons.
In West Yellowstone, the month of August presents a pleasant average wind speed of 2.5 m/s (6 mph), contributing to the region's comfortable summer atmosphere. Throughout the year, wind speeds fluctuate slightly, with the winter months typically experiencing lighter breezes, such as 2.4 m/s in May and 2.1 m/s in July. However, as we transition towards autumn, the winds gradually pick up, reaching 3.6 m/s (8 mph) by December. Notably, November shows a small surge to 2.9 m/s (6 mph), hinting at the impending chill of winter. Overall, August stands out as a time when the wind remains relatively moderate, allowing for enjoyable outdoor activities in this scenic locale.
The weather in West Yellowstone changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in West Yellowstone and find detailed weather information for every month.
August and January present stark contrasts in weather conditions. In August, temperatures range from a mild minimum of -1°C (30°F) to a warm maximum of 30°C (87°F), with an average of 14°C (58°F). The month sees moderate precipitation of 36 mm (1.4 in) over about 8 days, accompanied by a humidity level of 69%. Conversely, January is characterized by much colder weather, with temperatures plummeting to a minimum of -28°C (-17°F) and averaging -9°C (15°F), reaching a maximum of just 2°C (36°F). This winter month experiences higher precipitation of 54 mm (2.1 in) over about 12 days, and significantly elevated humidity at 93%. For more details on January weather, check out West Yellowstone weather in January.
August and February present starkly contrasting weather conditions. While August enjoys a milder climate with temperatures ranging from a minimum of -1°C (30°F) to a pleasant maximum of 30°C (87°F), February is characterized by much colder temperatures, peaking at just 5°C (41°F) and plummeting to a frigid minimum of -28°C (-19°F). Precipitation in August averages 36 mm (1.4 in) over about 8 days, contributing to its relatively dry atmosphere with a humidity level of 69%. In comparison, February experiences significantly higher precipitation at 96 mm (3.8 in) spread over 18 days, coupled with intense humidity at 92%. For more details on February's weather specifics, you can check West Yellowstone weather in February.
In comparing the weather of August and March, one can see a striking contrast in temperatures and conditions. August experiences a milder climate with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 30°C (87°F), while March is much cooler, with temperatures typically reaching as low as -29°C (-19°F) and only peaking at 10°C (51°F). Precipitation levels are also different, with August receiving 36 mm (1.4 in) over 8 days, compared to March, which sees 63 mm (2.5 in) spread over 13 days. Additionally, the humidity in March is notably higher at 89%, compared to August's 69%. For a more detailed look at March weather, you can visit West Yellowstone weather in March.
When comparing the weather in August and April, there are striking differences in temperature and precipitation. August features milder temperatures ranging from a minimum of -1°C (30°F) to a maximum of 30°C (87°F), with an average of 14°C (58°F). The month sees limited rainfall, with only 36 mm (1.4 in) of precipitation over approximately 8 days and humidity levels at 69%. In contrast, April experiences much colder conditions, with temperatures from a minimum of -19°C (-2°F) to a maximum of 14°C (57°F), averaging at -1°C (31°F). Additionally, April is wetter, with 72 mm (2.9 in) of precipitation over 15 days and higher humidity at 83%. For more detailed information, you can check West Yellowstone weather in April.
Comparing the weather in August and May reveals notable differences in temperature, precipitation, and humidity. In August, temperatures range from a minimum of -1°C (30°F) to a maximum of 30°C (87°F), with an average of 14°C (58°F). Conversely, May sees cooler temperatures, with a low of -12°C (11°F) and a high of 22°C (71°F), averaging at 3°C (38°F). Additionally, August receives less precipitation, totaling 36 mm (1.4 in) over 8 days, while May experiences more rainfall at 67 mm (2.6 in) over 13 days. Humidity levels are also higher in May at 79%, compared to 69% in August. For more detailed information on May weather, you can visit West Yellowstone weather in May.
In comparing the weather of June and August, we can observe some notable differences. August generally experiences milder temperatures with a minimum of -1°C (30°F), an average of 14°C (58°F), and a maximum of 30°C (87°F). This month also sees less precipitation, totaling 36 mm (1.4 in) over 8 days, and a humidity level of 69%. In contrast, June has cooler temperatures, ranging from a minimum of -6°C (21°F) to a maximum of 27°C (80°F), and a higher average temperature of 11°C (51°F). Precipitation is more abundant in June, reaching 67 mm (2.7 in) over 13 days, with humidity at 76%. For more details on June weather, you can explore West Yellowstone weather in June.
In comparing the weather of August and July, we see that both months experience a similar maximum temperature of 30°C (87°F), though August's average temperature is slightly lower at 14°C (58°F) compared to July's 16°C (61°F). Precipitation levels are marginally higher in August, with 36 mm (1.4 in) over 8 days, while July recorded 29 mm (1.2 in) over 7 days. Furthermore, humidity levels are a bit lower in August at 69% compared to July's 74%. For a detailed look at July weather specifically, you can check West Yellowstone weather in July.
August typically experiences milder temperatures, with a minimum of -1°C (30°F) and an average of 14°C (58°F) ranging up to a maximum of 30°C (87°F). It sees less precipitation, accumulating around 36 mm (1.4 in) over about 8 days, with an average humidity of 69%. In contrast, September brings more chill, with temperatures dropping to a minimum of -8°C (18°F) and averaging 9°C (49°F), while the maximum temperature reaches 28°C (82°F). Despite having slightly more rainfall at 50 mm (2.0 in) over only 6 days, humidity remains close, at 67%. For a detailed look at the climate during this transition, check out West Yellowstone weather in September.
August and October present striking contrasts in weather, particularly in temperature and conditions. In August, temperatures range from a minimum of -1°C to a warm maximum of 30°C, with an average of 14°C, coupled with relatively lower precipitation of 36 mm over 8 days. The humidity sits at 69%, making the summer month feel quite warm. In contrast, October brings a significant chill, with temperatures plummeting to a minimum of -32°C and a maximum of just 19°C, averaging around 0°C. This month also experiences increased precipitation at 56 mm, spread across 11 days, along with higher humidity at 72%. For more details on the October climate, you can check West Yellowstone weather in October.
August and November present significantly different weather characteristics. In August, temperatures range from a minimum of -1°C (30°F) to a maximum of 30°C (87°F), with an average of 14°C (58°F). This month sees relatively low precipitation at 36 mm (1.4 in) spread over 8 days and a humidity level of 69%. In contrast, November experiences much colder temperatures, with a minimum of -24°C (-12°F) and a maximum of 12°C (54°F), leading to an average of -6°C (22°F). Precipitation increases to 62 mm (2.4 in) over 12 days, coupled with higher humidity at 89%. For more detailed insights, you can check West Yellowstone weather in November.
August and December present starkly contrasting weather conditions. In August, temperatures range from a low of -1°C (30°F) to a warm high of 30°C (87°F), with an average temperature of 14°C (58°F). The month sees relatively low precipitation at 36 mm (1.4 inches) over 8 days, accompanied by a moderate humidity of 69%. In contrast, December brings frigid temperatures, with a minimum of -29°C (-20°F) and a maximum of only 5°C (42°F), resulting in an average temperature of -9°C (15°F). Precipitation in December rises to 59 mm (2.3 inches) across 14 days, and humidity soars to a chilly 94%. For more detailed insights into December weather, you can visit West Yellowstone weather in December.
August in West Yellowstone offers a welcoming respite from the extremes often felt in the colder months. With daytime temperatures soaring up to a pleasant 30°C, the warm days invite outdoor adventures and sightseeing in nature’s stunning landscapes. While the evenings can bring a slight chill, averaging around 14°C, the nights provide a refreshing contrast. Comparatively, this month is often characterized by higher humidity levels and a modest amount of precipitation over just a few days, making it distinct from the more arid conditions of July and the cooler, snow-prone winters. For those planning a visit, understanding the nuances of August weather enhances the experience in this captivating area—discover more at West Yellowstone Climate.