Last updated: February 24, 2025
In April, Keystone, United States experiences a dramatic mix of weather patterns, with temperatures ranging from a brisk -21°C (-5°F) at night to a moderate 10°C (50°F) during the day. The average temperature hovers around a chilly -3°C (27°F), reflecting the lingering remnants of winter. This month also sees 78 mm (3.1 in) of precipitation, spread over 13 days, contributing to a humidity level of 76% that keeps the air feeling damp and cool. Whether you're exploring the stunning landscapes or enjoying the local charm, this transitional month offers a unique blend of spring awakening and winter chill.
In April, temperatures in Keystone, United States begin to show promising signs of spring, with a notable rise compared to the preceding months. The minimum temperature settles at a brisk -21°C (-5°F), while the average climbs to -3°C (27°F), and the maximum reaches a refreshing 10°C (50°F). This shift reflects a steady warming trend as the region shakes off the harsh grips of winter, moving from the frigid depths of January and February, where temperatures plummeted to around -28°C (-19°F). By April, the average temperature gains almost 8°C compared to March, highlighting the transition into milder weather. As the month progresses, residents can expect a gradual thaw, hinting at the arrival of more temperate days ahead.
In April, Keystone experiences a notable increase in precipitation, with an average rainfall of 78 mm (3.1 in) over 13 days. This rise follows the steady upward trend observed since January, where precipitation began at 41 mm (1.6 in). Each month shows a gradual intensification, peaking in May at 81 mm (3.2 in), suggesting a consistent pattern of springtime wetness that nurtures the landscape. As winter gives way to more substantial rains, April serves as a transitional period, setting the stage for the lush greenery that follows, while maintaining a balanced rhythm of rainy days that keeps the area vibrant and fresh.
As spring unfolds in Keystone, United States, April brings a noticeable dip in humidity, dropping to 76% from the higher levels seen in the previous months. This trend of decreasing moisture levels continues into May, when humidity falls further to 66%, heralding the dry warmth of summer. The gradual decline from January's high of 88% illustrates a transition from the wintry chill to a more temperate climate, setting the stage for outdoor activities. April's moderate humidity strikes a balance, creating a refreshing atmosphere ideal for enjoying the awakening landscape, while indicating the region's shift towards the drier months ahead.
As April arrives in Keystone, the UV Index reaches a striking 12, placing it in the extreme exposure category and resulting in a mere 10 minutes of burn time for unprotected skin. This sharp rise from March’s already significant 9 signals a trend of increasing UV intensity as spring unfolds, a pattern that continues into the following months. The escalating UV levels from early spring through summer suggest that outdoor enthusiasts should remain vigilant, adopting protective measures early in the season. With May peaking even higher at 13, it’s clear that taking precautions is essential. For further insights and daily updates on UV exposure, check out Keystone UV Index.
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As April arrives in Keystone, United States, the days start to stretch and the sunshine becomes more abundant, offering 316 hours of glorious daylight. This marks a notable increase from 291 hours in March, paving the way for the warmth of spring. April's brightness is a precursor to the sun-drenched months ahead, as May peaks at 355 hours and June at 382 hours—the latter boasting the highest sunshine hours of the year. Interestingly, after the summer zenith, a gradual decline begins, with sunlight waning to 280 hours by October. The trend clearly shows how Keystone transforms with the seasons, moving from the brisk chill of winter to the vibrant embrace of spring and the long, sun-filled days of summer. Each month invites a unique experience, shaped by the rising and falling patterns of sunshine that define the local climate.
As spring unfurls in Keystone, the likelihood of sunny weather begins to brighten up with a 51% chance of sunshine in April. This marks a subtle increase from the preceding months, hinting at the region's gradual transition away from winter's clouds. Following April, the sunny potential rises even more, peaking to 52% in June and hitting a high of 61% in August, before gradually tapering off again in the autumn months. The data suggests a clear trend: as the year progresses towards summer, Keystone experiences an overall boost in sunny days, making April a promising start to the season.
As April unfolds in Keystone, the days grow noticeably longer, welcoming 13 hours of daylight—a significant increase from the 11 hours recorded in March. This trend towards lengthier days sets the stage for the vibrant and blossoming spring, as the area transitions from winter's chill to warmer, sunnier weather. Following April, May will further brighten the landscape, pushing daylight to 14 hours. This gradual escalation not only illuminates the beauty of Keystone's natural surroundings but also invites residents and visitors alike to embrace outdoor activities as the sun lingers longer in the sky. As summer approaches, the rhythm of longer days becomes a cherished part of life in this picturesque region.
In Keystone, United States, the April winds bring a refreshing change with an average speed of 2.6 m/s (6 mph), mirroring the slightly breezy conditions of the preceding months. As the year unfolds, wind speeds tend to fluctuate, peaking in the early winter with 2.9 m/s in December, only to gradually wane through the summer to a low of 1.8 m/s in July. Interestingly, April's winds are part of a gentle pattern of breeziness that predates May’s expected calm, suggesting a transition that softly ushers in the warmth of spring. As spring progresses, it’s clear that these winds not only enhance the enchanting atmosphere of Keystone but also signal the vitality of nature awakening from its winter slumber.
The weather in Keystone changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Keystone and find detailed weather information for every month.
When comparing the weather in April and January, a notable difference in temperature is evident. April experiences milder conditions with average temperatures around -3°C (27°F), while January is significantly colder, with an average of -11°C (13°F). In January, the minimum temperature can plummet to -26°C (-15°F), whereas April's coldest temperatures are slightly higher at -21°C (-5°F). Precipitation also varies between the two months: April sees a greater total of 78 mm (3.1 in) across 13 days, compared to January's 41 mm (1.6 in) over 10 days. Additionally, January's humidity levels are higher at 88%, compared to April's 76%. For more information, check out Keystone weather in January.
April generally sees milder temperatures compared to February, with average highs reaching 10°C (50°F) as opposed to February's max of 9°C (48°F). While April's minimum temperature is slightly warmer at -21°C (-5°F), February experiences more extreme cold with a minimum of -28°C (-19°F). In terms of precipitation, April receives more rainfall, totaling 78 mm (3.1 in) over about 13 days, compared to February's 59 mm (2.3 in) spread over 14 days. February's higher humidity at 87% adds to the chilly atmosphere, whereas April's humidity sits at a lower 76%. For more details on February weather patterns, you can check Keystone weather in February.
April generally sees a slight increase in temperature compared to March, with average temperatures rising from -5°C (22°F) in March to -3°C (27°F) in April. The minimum temperature also improves from -25°C (-12°F) in March to -21°C (-5°F) in April, while the maximum temperature reaches 10°C (50°F) in April compared to 9°C (49°F) in March. Although April experiences more precipitation at 78 mm (3.1 in) over 13 days compared to 67 mm (2.7 in) over 14 days in March, the humidity decreases slightly from 81% in March to 76% in April. For more details about the weather patterns in March, you can visit Keystone weather in March.
April and May show a noticeable transition in weather patterns. April's temperatures are colder, with a minimum of -21°C (-5°F) and an average of -3°C (27°F), while May brings a milder minimum of -13°C (10°F) and a higher average of 2°C (35°F). Although both months see similar precipitation levels—78 mm (3.1 in) in April and 81 mm (3.2 in) in May—April has slightly higher humidity at 76%, compared to May's 66%. The maximum temperatures also rise significantly, with April peaking at 10°C (50°F) and May reaching up to 17°C (63°F). For a detailed look at May weather, check out Keystone weather in May.
April and June present contrasting weather patterns. In April, temperatures fluctuate more dramatically, with lows plummeting to -21°C (-5°F) and an average around -3°C (27°F), leading to a chilly max of 10°C (50°F). The month is also characterized by higher precipitation, totaling 78 mm (3.1 in) over 13 days, resulting in a humidity level of 76%. In contrast, June brings milder conditions, with temperatures ranging from a minimum of -9°C (15°F) to an average of 8°C (46°F) and peaking at a pleasant 24°C (75°F). The precipitation decreases to 50 mm (2.0 in) over just 10 days, contributing to lower humidity at 58%. For more detailed information about June weather, you can visit Keystone weather in June.
April and July present a stark contrast in weather conditions. In April, temperatures range from a frigid minimum of -21°C (-5°F) to a mild maximum of 10°C (50°F), with an average of -3°C (27°F). The month is marked by significant precipitation, totaling 78 mm (3.1 in), and frequent rainy days, averaging 13. This results in a high humidity level of 76%.
In contrast, July experiences much warmer weather, with minimum temperatures around -2°C (28°F) and a comfortable average of 11°C (53°F), peaking at 23°C (74°F). Precipitation increases slightly to 83 mm (3.3 in) over around 15 days, but the humidity drops considerably to 52%. For more detailed insights into July weather, you can explore Keystone weather in July.
April and August showcase distinctly different weather patterns. In April, temperatures can plunge to a chilling minimum of -21°C (-5°F), with an average resting around -3°C (27°F) and a peak of only 10°C (50°F). This month experiences significant precipitation, averaging 78 mm (3.1 in) over 13 days, and a relatively high humidity of 76%. In contrast, August brings milder conditions, with minimum temperatures at 0°C (32°F) and an average of 11°C (52°F), reaching a maximum of 22°C (73°F). Precipitation decreases to 53 mm (2.1 in) over just 11 days, and the humidity is notably lower at 56%. For a closer look at August's weather specifics, you can refer to Keystone weather in August.
April and September offer contrasting weather experiences. In April, temperatures range from a chilly minimum of -21°C (-5°F) to a maximum of 10°C (50°F), with an average of -3°C (27°F). The month is relatively wet, with 78 mm (3.1 in) of precipitation spread over 13 days and high humidity at 76%. In contrast, September features milder temperatures, with a minimum of -11°C (13°F), an average of 7°C (46°F), and a maximum of 22°C (72°F). Precipitation is lower in September, at 43 mm (1.7 in) over just 9 days, and the humidity decreases to 65%. For more specific details about weather conditions during this month, visit Keystone weather in September.
April and October exhibit notable differences in weather characteristics. In April, temperatures range from a minimum of -21°C (-5°F) to a maximum of 10°C (50°F), with an average of -3°C (27°F) and a total precipitation of 78 mm (3.1 in) over 13 days. The humidity remains high at 76%, contributing to a chilly atmosphere. Conversely, October sees even colder temperatures, with a minimum of -24°C (-10°F) and a maximum of 17°C (63°F), leading to an average temperature of -1°C (31°F). Precipitation is lower at 56 mm (2.2 in) across 9 days, while humidity holds steady at 76%. This comparison showcases the gradual transition from the damp chill of late winter in April to the crisp but somewhat milder conditions of October. For more detailed information about Keystone weather in October, check out this link: Keystone weather in October.
In comparing April and November weather, we see some notable differences. April features a relatively milder climate with average temperatures around -3°C (27°F) and a maximum of 10°C (50°F), while November is colder, with an average of -7°C (20°F) and a minimum dipping to -27°C (-17°F). Precipitation levels also vary, as April receives more moisture with 78 mm (3.1 in) over approximately 13 days, whereas November has less precipitation at 41 mm (1.6 in) across 8 days. Additionally, humidity is slightly higher in November at 82%, compared to 76% in April. For further insights on November weather, visit Keystone weather in November.
April and December present stark contrasts in weather conditions. In April, temperatures range from a minimum of -21°C to a maximum of 10°C, with an average of -3°C, while December sees even colder temperatures, dipping to a minimum of -29°C and averaging -11°C, with a maximum of only 8°C. Precipitation is more frequent in April, occurring on 13 days and totaling 78 mm, compared to December's 10 days and 43 mm. Additionally, humidity levels are higher in December at 89%, compared to April's 76%. For more detailed weather insights, check Keystone weather in December.
As April rolls in, Keystone experiences a distinct shift in weather patterns that set it apart from the chillier winter months. With temperatures gradually rising, the crisp days invite a mix of warmth and lingering cold, contrasting with the biting conditions of earlier seasons. This month also brings a notable amount of precipitation, adding to the 76% humidity that blankets the area. The combination of these factors creates a unique environment that heralds the arrival of spring while still holding onto winter's touch. For a deeper understanding of what to expect throughout the year, visit Keystone Climate.