Last updated: February 24, 2025
In January, Juneau, United States, experiences a chilly climate with an average temperature of -4°C (25°F), where the mercury can dip as low as -25°C (-13°F). Despite the cold, the month accommodates a maximum of 8°C (47°F), offering brief moments of warmth. Precipitation is notable, with approximately 215 mm (8.4 in) falling over 16 days, contributing to a high humidity level of 94%. This combination of cold temperatures and significant moisture creates a unique winter atmosphere, perfect for those who embrace the beauty of frigid landscapes.
In January, temperatures in Juneau, United States, reflect the depths of winter, with a minimum plummeting to -25°C (-13°F) and an average hovering around -4°C (25°F). The city's thermal pattern hints at a gradual warming trend as the month progresses, reaching a maximum of 8°C (47°F). This chill is not an anomaly, as a similar pattern continues into February, though with slightly milder extremes. As spring approaches in March, temperatures begin to climb, showcasing Juneau’s transition from the harsh winter cold to more temperate conditions. This gradual warming serves as a precursor to the milder spring and summer months to come, drawing a clear line between the icy grip of January and the soon-to-arrive balmy weather.
In January, Juneau experiences significant precipitation, with 215 mm (8.4 in) falling over approximately 16 days, setting the tone for the wetter months ahead. Following this, February sees a slight decline in both precipitation amount and rainy days, dropping to 182 mm (7.2 in) over 14 days. As spring approaches, precipitation continues to decrease, with March and April recording 175 mm (6.9 in) and 163 mm (6.4 in) respectively, yet the number of rainy days remains steady. However, May brings a small uptick to 174 mm (6.9 in), suggesting that the area is gradually gearing up for the summer deluge. June and July witness a moderate rise in precipitation days, increasing to 22 and 18 days respectively, contributing to overall totals of 189 mm (7.4 in) and 164 mm (6.5 in). The latter half of the year, particularly August and October, showcases the highest rainfall, with 280 mm (11.0 in) in August, while October peaks at a whopping 332 mm (13.1 in) over 22 days. Notably, the trend indicates a robust wet season that culminates in the fall, with consistently high precipitation throughout the year, underscoring Juneau's reputation as a lush, rain-soaked paradise.
In Juneau, United States, January sets a notably humid stage with an impressive 94% humidity, closely followed by February at 90%. As spring arrives, humidity levels maintain a consistent 92% through both March and April, before slightly dipping to 90% in May. However, the humidity surges again as summer approaches, peaking in June at a striking 96%. The summer months see a dramatic rise, culminating in July with an astonishing 104%, followed by an even higher 108% in August. As autumn unfolds, humidity gradually eases yet remains substantial, with September, October, November, and December recording between 97% and 101%. This trend highlights Juneau's lush, moisture-rich climate, making it a vibrant setting characterized by profound humidity fluctuations throughout the year.
In Juneau, the UV Index shows a clear shift as the year progresses, reflecting the changing seasons. Starting in January, the UV Index is a mere 1, indicating low exposure risk, and this low level persists through February. However, as spring approaches in March and April, the index rises to 4 and 5, respectively, marking the onset of moderate exposure—where a burn can occur in about 30 minutes. May and June see a sharp jump to 8, categorized as very high, where just 15 minutes of sun can lead to skin damage. This trend of elevated UV levels continues into the summer, peaking at 9 in July and August before tapering off in the fall. By September, the index drops to 6 and gradually decreases again towards winter, returning to a low 1 by November and December. Understanding these fluctuations is crucial for outdoor enthusiasts looking to enjoy the beauty of Juneau while safeguarding their skin. For more detailed information on the UV Index in Juneau, visit Juneau UV Index.
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In Juneau, the sun's gentle embrace gradually strengthens as the year unfolds, casting longer and brighter days with each passing month. January kicks off with a modest 43 hours of sunshine, but by February, this figure surges to 125 hours, hinting at the promise of warmer days ahead. March continues this upward trend, boasting 179 hours, while April and May delight sun-seekers with 218 and 235 hours respectively. However, as summer peaks, June offers a slight dip to 201 hours, leading into the warm months of July and August with 198 and 178 hours of sunlight. As fall approaches, the days start to shorten, with September seeing 167 hours, and by the end of the year, November and December dwindle to just 58 and 45 hours. This cyclical dance of sunshine vividly illustrates how Juneau transitions from winter's grasp to the vibrant warmth of summer, only to retreat back into the shadows as the year closes.
In Juneau, the likelihood of sunny weather in January is relatively low, sitting at just 16%. This trend of limited sunshine persists into the following months, with March also experiencing a modest 17% probability. Notably, February breaks this pattern with a more favorable 36%, signaling a mild increase in clear skies. As spring approaches, the percentage of sunny days fluctuates, with April and June each offering a 35% and 26% chance, respectively. However, the summer months, particularly May and August, witness a return to lower probabilities of sunshine, with 13% and 17% chances, highlighting an overall trend of fluctuating sunny days that peaks in February and then varies throughout the year.
In Juneau, United States, daylight duration experiences a captivating transformation throughout the year. Beginning in January with just 7 hours of daylight, the days gradually lengthen as winter gives way to spring. By February, the city sees 9 hours of sunlight, and this upward trend continues, reaching 11 hours in March and an impressive 14 hours by April. As summer approaches, May boasts 16 hours of daylight, culminating in June when the sun shines for a remarkable 18 hours each day. The light begins to wane in July and August, dropping to 17 and 15 hours, respectively, before settling at 12 hours in September. The descent continues, with daylight shrinking to 10 hours in October and further contracting to just 6 hours by December, highlighting the striking seasonal contrasts that define life in this northern locale.
In Juneau, the January winds start off the year with an average speed of 2.5 m/s (6 mph), setting a brisk pace that lingers into February. However, as spring approaches, a gradual decline becomes evident, with March and April recording slower winds at 2.3 m/s (5 mph) and 2.0 m/s (4 mph), respectively. May and June continue this trend, reaching their calmest average of 1.6 m/s (4 mph) in June. The summer months bring only a slight resurgence in wind speeds, peaking at 1.9 m/s (4 mph) in August before dipping back down to 1.4 m/s (3 mph) in July. As fall ushers in September, winds pick up again, hitting 2.2 m/s (5 mph), and wind speeds fluctuate moderately in the latter months of the year, returning to the January level by December. Overall, Juneau experiences a distinct seasonal cycle in wind speed, with the calmest conditions occurring in the heart of summer.
The weather in Juneau changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Juneau and find detailed weather information for every month.
January and February present quite similar but slightly varying weather patterns. In January, temperatures can plummet to a minimum of -25°C (-13°F), with an average temperature of -4°C (25°F) and a maximum of 8°C (47°F). The month sees considerable precipitation, with 215 mm (8.4 in) falling over 16 days, accompanied by high humidity levels at 94%. In contrast, February experiences slightly milder conditions with a minimum of -24°C (-12°F), an average of -5°C (23°F), and a maximum of 9°C (48°F). Precipitation decreases to 182 mm (7.2 in) over 14 days, and the humidity drops to 90%. For a more detailed look at February weather specifics, check out Juneau weather in February.
In January, the weather is characterized by much colder temperatures, with a minimum of -25°C (-13°F) and an average of -4°C (25°F), while March sees milder conditions with a minimum of -18°C (0°F) and an average of -1°C (30°F). Precipitation is relatively high in both months, but January experiences more, totaling 215 mm (8.4 in) over 16 days compared to March's 175 mm (6.9 in) spread over 17 days. Additionally, humidity levels are slightly higher in January at 94%, compared to 92% in March. For more detailed information on weather patterns in March, check out Juneau weather in March.
The weather in January is notably harsher than in April, with January temperatures typically ranging from a bitter minimum of -25°C (-13°F) to a maximum of just 8°C (47°F), averaging around -4°C (25°F). In contrast, April sees a milder climate, with temperatures climbing from a minimum of -13°C (9°F) to a maximum of 12°C (55°F), averaging 2°C (36°F). January also experiences higher precipitation levels at 215 mm (8.4 in) over 16 days, while April has slightly less at 163 mm (6.4 in) across 17 days. Humidity remains relatively high for both months, with January at 94% and April at 92%. For more specific details, you can explore Juneau weather in April.
January and May present stark contrasts in weather conditions. In January, temperatures plummet, with minimums reaching as low as -25°C (-13°F) and an average of -4°C (25°F), while precipitation is high at 215 mm (8.4 in) over 16 days, contributing to a chilly humidity level of 94%. In sharp contrast, May brings a milder climate with temperatures ranging from a minimum of -3°C (26°F) to a pleasant maximum of 21°C (70°F), and average temperatures around 7°C (45°F). Although May sees slightly less precipitation at 174 mm (6.9 in) over 18 days, the humidity remains notably high at 90%. For a closer look at what to expect during this month, check out Juneau weather in May.
January and June present starkly contrasting weather conditions. In January, temperatures plummet to a minimum of -25°C (-13°F) and hover around an average of -4°C (25°F), with maximums reaching just 8°C (47°F). The month sees significant precipitation, totaling 215 mm (8.4 in) over 16 days, while humidity remains high at 94%. In comparison, June warms up considerably, with minimum temperatures rising to 2°C (36°F) and averages climbing to 11°C (53°F), peaking at 25°C (77°F). Although precipitation is slightly lower at 189 mm (7.4 in) over 22 days, humidity is still elevated at 96%. For more detailed insights, you can check out Juneau weather in June.
In January, the weather in Juneau is characterized by frigid temperatures, with a minimum of -25°C (-13°F) and an average of -4°C (25°F), while experiencing significant precipitation of 215 mm (8.4 in) over 16 days, accompanied by very high humidity at 94%. In stark contrast, July brings a much milder climate, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 25°C (77°F) and an average temperature of 13°C (56°F). Although July experiences slightly less precipitation at 164 mm (6.5 in) over 18 days, the humidity is notably high at 104%, highlighting the contrasting weather patterns between the two months. For more details on July weather, you can check Juneau weather in July.
January and August in Juneau present a striking contrast in weather conditions. In January, temperatures plunge to a minimum of -25°C (-13°F), with an average around -4°C (25°F) and a maximum of only 8°C (47°F). This frigid month also sees high humidity levels at 94% and substantial precipitation, totaling 215 mm (8.4 in) across 16 days. In contrast, August offers a more temperate climate, with temperatures ranging from a minimum of 4°C (40°F) to a pleasant maximum of 27°C (80°F) and an average of 13°C (56°F). Although it experiences slightly more precipitation at 280 mm (11.0 in) over 20 days, the humidity peaks at 108%. For a closer look at the weather in August, visit Juneau weather in August.
January and September present strikingly different weather patterns. In January, temperatures can drop as low as -25°C (-13°F), with an average temperature of -4°C (25°F) and a maximum of 8°C (47°F). The month is characterized by significant precipitation, with 215 mm (8.4 in) falling over 16 days and high humidity at 94%. In contrast, September experiences milder temperatures, ranging from a minimum of -4°C (26°F) to an average of 10°C (50°F), and reaching up to 23°C (74°F). This month sees an increase in precipitation to 259 mm (10.2 in) over 17 days, accompanied by a slightly higher humidity level at 101%. For more details on the climate in September, you can check Juneau weather in September.
January and October present contrasting weather, both in temperature and precipitation. In January, the temperature ranges from a frigid -25°C (-13°F) to a maximum of 8°C (47°F), with an average temperature of -4°C (25°F). This month also experiences significant precipitation, totaling 215 mm (8.4 in) over 16 days and an average humidity of 94%. In stark contrast, October sees milder temperatures, with a minimum of -11°C (13°F), an average of 4°C (40°F), and a maximum of 14°C (57°F). However, it is wetter, with precipitation reaching 332 mm (13.1 in) over 22 days and a humidity level that climbs to 98%. For a more detailed look at the weather patterns, you can explore Juneau weather in October.
January and November both experience cold temperatures, but January is typically colder overall, with average lows reaching -25°C (-13°F) compared to November's minimum of -15°C (6°F). The average temperature in January hovers around -4°C (25°F), slightly colder than November's average of -1°C (31°F). While both months can see a maximum temperature of 8°C (47°F), precipitation is more frequent in November, with 267 mm (10.5 in) over 22 days compared to January's 215 mm (8.4 in) over 16 days. Additionally, November tends to have higher humidity levels at 97%, compared to January's 94%. For more information about weather conditions specific to November, you can visit Juneau weather in November.
In comparing the weather of January and December, we find that January experiences slightly colder temperatures, with an average of -4°C (25°F) compared to December's average of -2°C (28°F). The maximum temperatures in January reach only 8°C (47°F), while December can go up to 10°C (50°F). Precipitation is more frequent in December, occurring on 22 days with a total of 292 mm (11.5 in), compared to January's 215 mm (8.4 in) falling over 16 days. Additionally, humidity levels are marginally higher in December at 96%, compared to January's 94%. For more detailed information, you can check out Juneau weather in December.
In January, Juneau experiences a stark contrast to the milder months, characterized by chilly temperatures that can plunge to an unforgiving minimum of -25°C (-13°F). This month often sees a mix of wintery offerings, with frequent precipitation totaling 215 mm (8.4 in) across approximately 16 days, contributing to the spectacular yet harsh winter landscape. The high humidity levels, around 94%, make the cold feel even more biting, setting January apart from the more temperate summer and fall months. For a deeper dive into the region's climate patterns, check out Juneau Climate.