Last updated: February 24, 2025
February in Boulder, United States, presents a captivating winter landscape characterized by a maximum temperature peaking at 20°C (69°F), alongside a stark average low of -4°C (26°F) and an impressive minimum drop to -26°C (-14°F). This month experiences 36 mm (1.4 in) of precipitation spread across 9 days, contributing to a relatively high humidity level of 87%. As the days fluctuate between cold and mild, Boulder’s February weather embodies the dynamic charm of winter, appealing to adventurers and nature lovers alike.
In Boulder, United States, February brings a bit more chill than January, with temperatures dipping to a minimum of -26°C (-14°F) and reaching a maximum of 20°C (69°F). The average temperature hovers around -4°C (26°F), reflecting a slight drop compared to January’s average. This month continues the trend of winter’s grip, yet hints at the transition toward spring as the maximum temperature exceeds the previous month’s record. Despite the frigid mornings, there are moments of warmth as the sun rises higher in the sky, offering residents and visitors a gentle reminder that the warmer days of March are just around the corner.
In February, Boulder experiences a notable increase in precipitation, with 36 mm (1.4 in) recorded over 9 days, setting the stage for a wetter spring ahead. This marks a significant upswing from January’s 25 mm (1.0 in), indicating a transition into a more dynamic weather pattern. As winter begins to faze out, the region typically sees more frequent moisture, contributing to the anticipation of March's heavier rains. Notably, the trend continues into the coming months, with precipitation peaking in May at 134 mm (5.3 in), highlighting February's role as a pivotal month that bridges the dry spells of winter with the burgeoning wet season. This increasing pattern not only nourishes the landscape but also signals the arrival of spring's vitality.
As winter transitions to spring, February in Boulder sees a slight dip in humidity, averaging 87% compared to the previous month's 88%. This gradual decrease is part of a broader trend where humidity levels steadily decline as the year progresses, dropping significantly to 81% in March and further to 76% by April. The lower winter and early spring humidity levels hint at the region's shift towards drier months, culminating in summer's warmest and driest periods, where humidity can fall as low as 52% in July. Observing these trends, it's clear that Boulder experiences a natural ebb and flow in humidity, setting the stage for vibrant seasonal changes throughout the year.
As February arrives in Boulder, the UV Index climbs to 6, marking a shift to a high exposure category. With a burn time of just 25 minutes, it's a reminder for residents and visitors alike that the sun's rays are becoming increasingly potent. This trend of rising UV levels is evident as we transition from January's moderate index of 4. Looking ahead to March and April, the UV Index escalates even further, reaching alarming heights of 9 and 11 respectively, signaling the gradual onset of springtime sun exposure. Staying informed is crucial; for detailed insights, check Boulder UV Index to ensure your sun safety.
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In Boulder, February ushers in a noticeable increase in sunshine, with an impressive 237 hours lighting up the month, setting the stage for the bright spring ahead. This boost from January's 185 hours heralds a clear trend of increasing daylight as the seasons shift. By March, the sun continues to shine brighter, bringing 288 hours of precious sunlight, which peaks dramatically in the summer months, culminating at 378 hours in July. Such a gradual ascent in sunshine not only enhances outdoor activities but also uplifts the spirits of residents and visitors alike, making Boulder an inviting place to bask in the glow of nature's warmth.
When it comes to sunny weather in Boulder, February offers a 52% chance of clear skies, marking a slight dip from January's 56%. This trend suggests that while the sun may be less frequent as winter persists, February still holds its own compared to the following months. As we transition into spring, the likelihood of sunshine continues to dance around the 50% mark for March and April, indicating a gradual embrace of longer, sunnier days. It’s worth noting that summer months like July and August peak dramatically, with chances soaring to 59% and 65% respectively. Overall, while February might be a transitional month, it remains a noteworthy contender in Boulder’s yearly sunshine statistic.
As February unfolds in Boulder, the days gradually lengthen, bringing an enticing 10 hours of daylight—a noticeable increase from January's 9 hours. This trend marks the beginning of a steady rise in daylight that continues into the spring months. March follows closely with 11 hours, and by April, the daylight expands to an inviting 13 hours, heralding the fully blossoming days of spring. As the year progresses, the peak daylight occurs in June and July, with a consistent 14 hours that showcases Boulder’s vibrant summer. As autumn approaches, the daylight begins to retreat, tapering down to 12 hours in September before returning to the shorter days of winter. This rhythmic cycle reflects the natural ebb and flow of seasons, inviting residents and visitors alike to embrace the increasing warmth and light that February heralds.
As February settles in Boulder, the wind begins to whisper with a gentle average speed of 2.8 m/s (6 mph), slightly stronger than the preceding month. This uptick in breezy conditions marks a subtle transition from the calm of January, while still remaining consistent with the overall light wind patterns characteristic of winter in the region. Interestingly, as the season progresses into March, there is a slight decrease in wind speed, suggesting a calming trend as warmer months approach. February’s breezes, while mild, serve as a reminder of nature's ebb and flow, preparing Boulder's residents for the transitions ahead.
The weather in Boulder changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of February's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Boulder and find detailed weather information for every month.
February's weather exhibits a slight warming trend compared to January, with average temperatures hovering around -4°C (26°F), compared to January's average of -3°C (26°F). The minimum temperature in February dips to -26°C (-14°F), similar to January's minimum of -24°C (-12°F), while the maximum temperatures rise slightly to 20°C (69°F) compared to January's 15°C (59°F). Precipitation levels also increase in February, receiving 36 mm (1.4 in) over 9 days, compared to January's 25 mm (1.0 in) over 5 days. Humidity remains relatively consistent, with February at 87% and January at 88%. For more details on January weather, you can explore the link: Boulder weather in January.
February and March display notable differences in weather patterns. February’s temperatures range from a chilly minimum of -26°C (-14°F) to a milder maximum of 20°C (69°F), with an average of -4°C (26°F). In contrast, March sees a slightly warmer average temperature of 2°C (35°F), with lows around -21°C (-5°F) and highs reaching up to 23°C (73°F). Precipitation also increases in March, with 62 mm (2.5 in) over 11 days compared to February's 36 mm (1.4 in) over 9 days. Despite the increased moisture, March is less humid, averaging 81% compared to February's 87%. For a more detailed look at March conditions, you can explore Boulder weather in March.
February and April exhibit notable differences in weather conditions. February tends to have lower average temperatures, with a minimum of -26°C (-14°F) and a maximum of 20°C (69°F), resulting in an average of -4°C (26°F). In contrast, April sees a milder climate, with temperatures ranging from -17°C (2°F) to a warmer maximum of 24°C (75°F), leading to a more comfortable average of 5°C (42°F). Additionally, February experiences more humidity at 87%, compared to April's 76%. While February has 9 days of precipitation totaling 36 mm (1.4 in), April is wetter, bringing 68 mm (2.7 in) of precipitation over 12 days. For more details on April weather, check out Boulder weather in April.
February and May present notably different weather patterns. In February, temperatures can drop as low as -26°C (-14°F) and average around -4°C (26°F), with a maximum reaching 20°C (69°F). The month sees about 36 mm (1.4 in) of precipitation across 9 days and experiences high humidity at 87%. In contrast, May offers a milder climate, with minimum temperatures of -9°C (17°F) and average highs around 10°C (50°F), peaking at 27°C (81°F). It also has significantly more precipitation at 134 mm (5.3 in) over 16 days, accompanied by lower humidity at 66%. For more details on May's weather, you can check Boulder weather in May.
February and June exhibit stark contrasts in weather conditions. February experiences frigid temperatures, with an average of -4°C (26°F) and a minimum that can plunge to -26°C (-14°F), while June boasts a much warmer average of 17°C (63°F) and can reach highs of 34°C (93°F). Precipitation is also more abundant in June, totaling 74 mm (2.9 in) over 14 days, compared to February's 36 mm (1.4 in) across 9 days, creating a drier and more stable winter atmosphere versus a more humid and variable summer climate. For more details on June weather, check out Boulder weather in June.
February and July present strikingly different weather patterns. In February, temperatures can plunge as low as -26°C (-14°F), with an average of -4°C (26°F) and occasional highs reaching up to 20°C (69°F). The month experiences relatively high humidity at 87% and sees about 36 mm (1.4 in) of precipitation over 9 days. In contrast, July offers a much milder climate, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 34°C (93°F) and an average of 20°C (68°F). This month has an increased rainfall of 71 mm (2.8 in) spread over 16 days, but the humidity drops to a more comfortable 52%. For more detailed insights, check out Boulder weather in July.
February and August present contrasting weather patterns. In February, temperatures can plummet to a minimum of -26°C (-14°F), with an average of -4°C (26°F) and a maximum reaching just 20°C (69°F). The month is characterized by high humidity at 87% and light precipitation on about 9 days, totaling 36 mm (1.4 in). In stark contrast, August boasts a much milder climate, with minimum temperatures around 7°C (45°F) and averages of 19°C (67°F), peaking at a maximum of 33°C (91°F). While it experiences higher total precipitation of 67 mm (2.7 in) over about 13 days, humidity is significantly lower at 56%. For those curious about the specifics of August weather, more information can be found here: Boulder weather in August.
February and September present a stark contrast in weather. In February, the temperatures can plummet to a chilling minimum of -26°C (-14°F), with an average of -4°C (26°F) and a maximum of only 20°C (69°F). The month sees relatively high humidity at 87% and experiences about nine days of precipitation totaling 36 mm (1.4 in). In stark contrast, September offers a milder climate, starting at a minimum of -4°C (25°F) and reaching an average of 16°C (61°F) and a maximum of 33°C (92°F). This month also experiences slightly more precipitation at 42 mm (1.6 in) but over just eight days, and the humidity drops significantly to 65%. For more detailed information, you can check Boulder weather in September.
February and October display striking contrasts in weather patterns. In February, the temperatures can plummet as low as -26°C (-14°F), with an average of -4°C (26°F) and a maximum reaching 20°C (69°F). The month experiences considerable humidity at 87% and sees about 36 mm (1.4 inches) of precipitation over 9 days. In comparison, October boasts milder temperatures, with a minimum of -20°C (-5°F) and an average of 7°C (45°F), peaking at 26°C (79°F). While it receives slightly more precipitation at 48 mm (1.9 inches), it has fewer rainy days, totaling 7, and lower humidity at 76%. For a detailed look at what to expect during this month, check out Boulder weather in October.
February and November exhibit notable differences in weather patterns. In February, temperatures range from a frigid minimum of -26°C (-14°F) to a maximum of 20°C (69°F), with an average temperature of -4°C (26°F). Humidity is high at 87%, and precipitation occurs over about 9 days, totaling 36 mm (1.4 in). In contrast, November sees slightly warmer conditions, with temperatures ranging from a minimum of -16°C (3°F) to a maximum of 22°C (71°F) and an average of 2°C (36°F). Precipitation is somewhat less, totaling 30 mm (1.2 in) over 6 days, and the humidity is a bit lower at 82%. For detailed weather insights, check out Boulder weather in November.
February weather tends to be slightly colder than December, with average temperatures hovering around -4°C (26°F) compared to December's average of -2°C (29°F). February experiences a lower minimum temperature of -26°C (-14°F) compared to December's -19°C (-1°F), while both months see similar maximum temperatures around 19°C to 20°C (67°F to 69°F). In terms of precipitation, February is noticeably wetter, with 36 mm (1.4 in) over 9 days, while December receives only 19 mm (0.8 in) over 4 days. Humidity is slightly higher in December at 89%, compared to February's 87%. For more details on December weather, you can visit Boulder weather in December.
February in Boulder offers a stark contrast to the nearby months, marked by a chilly average temperature that highlights the winter's grip. With maximum temperatures peaking at a cool 20°C and the possibility of plunging to -26°C, this month experiences a unique blend of crisp days and biting cold nights. Travelers should prepare for the average humidity of 87%, adding a layer of chill to the air, along with the likelihood of precipitation spread across about nine days. As February unfurls, it serves as a transitional period, hinting at the warmer spring months ahead yet still embracing the wintry charm. To explore more about the Year-round weather patterns, check out Boulder Climate.