April Weather in Fort Collins, United States

Last updated: February 24, 2025

April in Fort Collins, United States, showcases a remarkable transition into spring, with temperatures ranging from a minimum of -13°C (9°F) to a maximum of 29°C (85°F). The average temperature settles at 8°C (47°F), inviting residents and visitors alike to enjoy the warming days. While the city experiences an average precipitation of 53 mm (2.1 in) over 10 days, humidity levels hover around 67%, contributing to a diverse and vibrant landscape as nature awakens from winter. This month encapsulates the essence of spring's unpredictability, making it an exciting time for outdoor activities amid fluctuating weather conditions.

April Temperature in Fort Collins

In April, Fort Collins experiences a notable transition as winter gives way to spring, with temperatures reflecting this shift. The minimum temperature hovers around -13°C (9°F), while the average rises to a comfortable 8°C (47°F), and the maximum can reach an enjoyable 29°C (85°F). This is a significant increase from the chilling depths of winter, particularly when compared to the preceding months where temperatures lingered well below freezing. With April's warmer days, residents can finally shake off the cold and embrace the season of renewal, making it an ideal time for outdoor activities and enjoying the bursting blooms of spring. As the month progresses, the promise of even warmer weather beckons, paving the way for the delightful temperatures of May.

April Weather in Fort Collins: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Fort Collins, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec302940475568747265484033
Data source: Temperature data for Fort Collins generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Fort Collins

April in Fort Collins brings a refreshing burst of moisture, matching March with a notable precipitation total of 53 mm (2.1 in). This uptick contributes to a significant trend, as spring months typically see a jump in rainfall, gearing up for the wetter conditions of May, which averages 116 mm (4.6 in). With 10 precipitation days this month, April serves as a key transitional period, setting the stage for the lush greenery that follows. This pattern emphasizes the importance of April as a bridge between the drier winter months and the more abundant showers of late spring, illustrating Fort Collins' dynamic climate.

April Precipitation Trends in Fort Collins

The chart displays monthly precipitation patterns in Fort Collins, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1723535311640303726362116
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Fort Collins

In April, Fort Collins experiences a notable dip in humidity, reaching 67%, a significant decline from the winter months when humidity hovered around 84-85%. This decrease marks a transition towards drier spring conditions, similar to May's humidity, which remains consistent at 67%. As the region moves into the summer months, humidity continues to soften, peaking at 62% in July. This trend reflects the overall shift from the brisk, moist winters to a milder, drier climate, allowing residents to enjoy the blooming landscapes of spring without the heaviness of high humidity.

April Average Humidity in Fort Collins

This chart illustrates the average monthly humidity levels in Fort Collins, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec84%86%75%67%67%68%62%63%63%72%80%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Fort Collins

In April, Fort Collins experiences an impressive leap in UV Index, soaring to 11, indicating an extreme exposure level. This stark increase from March's index of 8 is a clear sign that spring is in full swing, with a significantly reduced burn time of just 10 minutes. As the days grow longer and sunnier, residents should be especially vigilant about sun safety, particularly when compared to the moderate conditions of January. This trend of rising UV levels continues into May, maintaining that extreme status, and foreshadows the peak indices of summer in June and July. By staying informed and prepared, you can enjoy the beautiful Colorado spring while protecting your skin. For more detailed information, visit Fort Collins UV Index.

Maximum UV Index Levels in Fort Collins for April

The chart shows the monthly maximum UV Index (UVI) for Fort Collins in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec46811111212119643
Data source: Fort Collins April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Fort Collins

As April blooms in Fort Collins, the sun graces the city with a delightful 300 hours of sunshine—an encouraging sign of the warm days ahead. This month marks a significant increase from the previous months, signaling the transition from winter's chill to the vibrant energy of spring. Following a steady rise in daylight hours since January, which started at a mere 185 hours, the sunshine accumulates tantalizingly each month, peaking in June with 374 hours. As nature awakens, residents and visitors alike can soak in the outdoors, reveling in the balance of longer days and invigorating warmth, making April a particularly enchanting time in this charming city.

Monthly Sunshine Duration in Fort Collins: April Highlighted

The April sunshine duration represents the total number of hours Fort Collins experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec185h234h285h300h327h374h382h352h306h272h248h237h
Data source: Fort Collins April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Fort Collins During April

April in Fort Collins sees a 51% chance of sunny weather, offering a glimpse of spring after the cooler winter months. While this figure is slightly above the early spring months of January, February, and March—each hovering around 49%—it falls short compared to the sunlit days that follow in late spring and summer. As the seasons progress, the likelihood of sunshine ramps up significantly, peaking in August at 66%. This trend suggests that while April can be a tad unpredictable, it hints at the brighter days ahead, inviting residents to embrace the budding season with optimism.

Percentage of Sunny Days in April in Fort Collins

The chart illustrates the percentage of sunny days in Fort Collins throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Fort Collins experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec56%49%50%51%39%57%62%66%69%65%62%66%
Data source: Fort Collins April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Fort Collins in April

As spring blossoms in Fort Collins, April ushers in a noticeable shift towards longer days, with daylight reaching an invigorating 13 hours. This increase reflects a broader trend of gradually extending daylight that begins in the winter months; from just 9 hours in January, the duration steadily climbs by an hour each month until March. The transition into April is particularly striking, as it marks the leap into longer daylight hours, setting the stage for an even brighter May, when daylight peaks at 14 hours. This seasonal progression not only enhances outdoor activities but also lifts spirits, showcasing a clear movement from winter's early evening shadows to spring's vibrant sunshine. Overall, April serves as a delightful reminder of nature’s awakening and the approach of summer.

Average Daylight Hours in Fort Collins for April

The chart illustrates the variation in daylight duration in Fort Collins throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 38m10h 40m11h 58m13h 19m14h 26m15h14h 41m13h 41m12h 24m11h 4m9h 54m9h 19m
Data source: Fort Collins daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Fort Collins

In April, Fort Collins experiences a gentle uptick in average wind speed, reaching 2.7 m/s (6 mph). This slight increase from the earlier months signifies the arrival of spring, bringing with it a refreshing breeze that invigorates the landscape. Unlike the preceding months, where wind speeds hovered around 2.4 to 2.5 m/s, April's breezier conditions herald a transition into warmer days and blooming flora. As the year progresses, the winds tend to calm again in May, with speeds dipping back to 2.3 m/s (5 mph), but April's whispers of spring provide a delightful reminder of nature's continuous ebb and flow.

Average April Wind Speed in Fort Collins

The chart displays monthly wind speed patterns in Fort Collins, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.52.42.7 m/s2.32.32.12.42.42.52.42.4
Data source: Fort Collins April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Fort Collins Compares to Other Months

The weather in Fort Collins 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 Fort Collins and find detailed weather information for every month.

April and January present contrasting weather conditions. In January, temperatures can plunge as low as -26°C (-14°F), with an average temperature of -1°C (30°F) and a maximum of only 17°C (62°F). January also tends to be drier, receiving just 17 mm (0.7 in) of precipitation over about 4 days, alongside higher humidity levels at 84%. In stark contrast, April enjoys a more moderate climate, with temperatures ranging from a minimum of -13°C (9°F) to an average of 8°C (47°F) and reaching up to 29°C (85°F). April is also wetter, with 53 mm (2.1 in) of precipitation over approximately 10 days, accompanied by a slightly lower humidity at 67%. For more details, you can check Fort Collins weather in January.

April weather in Fort Collins shows a significant warming trend compared to February, with average temperatures rising from -2°C (29°F) in February to 8°C (47°F) in April. While February experiences colder minimum temperatures plunging to -25°C (-13°F), April sees a milder low of -13°C (9°F). Additionally, April's maximum temperature can reach as high as 29°C (85°F), providing a stark contrast to February’s top of 24°C (75°F). However, February is generally more humid at 85%, compared to April’s 67%, and it has lower overall precipitation, with 23 mm (0.9 in) over 6 days versus April's 53 mm (2.1 in) over 10 days. For more details, check out Fort Collins weather in February.

In comparing the weather of April and March, April generally exhibits milder temperatures, with a minimum of -13°C (9°F) and an average of 8°C (47°F), compared to March's lower minimum of -21°C (-5°F) and average of 4°C (40°F). The maximum temperature in April can reach up to 29°C (85°F), slightly higher than March’s peak of 26°C (79°F). Both months receive the same amount of precipitation (53 mm or 2.1 in) over a comparable number of days—10 in April and 9 in March. Notably, humidity is slightly lower in April at 67%, compared to 75% in March. For more insights into March weather specifically, you can visit Fort Collins weather in March.

April and May exhibit notable differences in weather patterns. In April, temperatures range from a minimum of -13°C (9°F) to a maximum of 29°C (85°F), with an average temperature of 8°C (47°F). This month experiences about 53 mm (2.1 in) of precipitation over 10 days, along with a consistent humidity level of 67%. In contrast, May sees warmer temperatures, with a minimum of -3°C (27°F) and a maximum of 31°C (88°F), resulting in a higher average temperature of 13°C (56°F). Additionally, May experiences increased rainfall, totaling 116 mm (4.6 in) over 14 days, while humidity remains steady at 67%. For more detailed weather information, check out Fort Collins weather in May.

In April, the weather is characterized by a wider temperature range, with minimums dipping to -13°C (9°F) and maximums reaching up to 29°C (85°F), leading to an average temperature of 8°C (47°F). The month experiences a total precipitation of 53 mm (2.1 in) across about 10 days, while humidity levels hover at 67%. In contrast, June offers more consistent warmth, with minimum temperatures at 5°C (41°F) and maximums soaring to 38°C (100°F), resulting in a pleasant average of 20°C (68°F). June sees slightly less precipitation at 40 mm (1.6 in) over 8 days and a marginal increase in humidity at 68%. For more detailed information, check out Fort Collins weather in June.

April and July showcase a striking contrast in weather patterns. In April, temperatures can plunge as low as -13°C (9°F), but can also rise to a maximum of 29°C (85°F), with an average temperature around 8°C (47°F). This month experiences about 53 mm (2.1 inches) of precipitation over approximately 10 days, coupled with a humidity level of 67%. In contrast, July offers a much milder climate with a minimum temperature of 9°C (49°F) and a maximum that can soar to 37°C (99°F), averaging around 23°C (74°F). The precipitation in July is significantly lower at 30 mm (1.2 inches), occurring over just 6 days, and with humidity slightly reduced to 62%. For more detailed insights, check out Fort Collins weather in July.

April and August in Fort Collins present distinct weather contrasts. April experiences a broader temperature range, from a chilly minimum of -13°C (9°F) to a warm maximum of 29°C (85°F), with an average of 8°C (47°F). In contrast, August tends to be milder, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 36°C (98°F) and an average of 22°C (72°F). Precipitation is more frequent in April, occurring over 10 days and totaling 53 mm (2.1 in), whereas August sees less rain over just 6 days, amounting to 37 mm (1.5 in). Additionally, humidity levels are slightly higher in April at 67%, compared to August’s 63%. For more details, you can check Fort Collins weather in August.

April and September present distinct weather patterns that reflect the transition between seasons. In April, temperatures can range from a chilly -13°C (9°F) to a warm 29°C (85°F), with an average of 8°C (47°F) and a higher humidity level of 67%. The month experiences approximately 53 mm (2.1 in) of precipitation over about 10 days, indicating frequent spring showers. In contrast, September features milder temperatures, with a minimum of -1°C (31°F), an average of 19°C (66°F), and a maximum climb reaching 37°C (99°F). This month is drier, recording only 26 mm (1.0 in) of precipitation over about 4 days, and slightly lower humidity at 63%. For more detailed insights into September weather, check out Fort Collins weather in September.

April and October present interesting contrasts in weather, despite having similar average maximum temperatures around 29°C (85°F). April experiences a wider temperature range with a minimum as low as -13°C (9°F), while October's temperatures can dip to -16°C (3°F). Precipitation levels also differ, with April receiving 53 mm (2.1 in) across about 10 days, compared to October's 36 mm (1.4 in) over just 7 days. Additionally, humidity is slightly higher in October at 72% compared to April's 67%, contributing to a different feel in the air. For more detailed information, check out Fort Collins weather in October.

April and November showcase distinct weather patterns as they transition between seasons. In April, temperatures range from a chilly -13°C (9°F) at night to a pleasant 29°C (85°F) during the day, with an average of 8°C (47°F). This month experiences more precipitation, totaling 53 mm (2.1 in) over about 10 days, alongside a humidity level of 67%. In contrast, November sees slightly lower minimum temperatures at -15°C (6°F) and a cooler average of 4°C (40°F), with a maximum temperature of 25°C (77°F). November is generally drier, featuring just 21 mm (0.8 in) of precipitation across 5 days and a higher humidity level of 79%. For a detailed view of November weather, you can visit Fort Collins weather in November.

April and December present contrasting weather conditions. In April, the temperatures range significantly, with a minimum of -13°C (9°F) and a maximum of 29°C (85°F), leading to an average temperature of 8°C (47°F). This month experiences relatively moderate rainfall, accumulating around 53 mm (2.1 in) over approximately 10 days, along with a humidity level of 67%. In stark contrast, December features cooler temperatures, with a minimum of -16°C (3°F) and a maximum of 22°C (72°F), resulting in a much lower average of 1°C (33°F). Precipitation in December is also less, totaling only 16 mm (0.6 in) over just 3 days, combined with higher humidity levels at 85%. For more detailed insights, check out Fort Collins weather in December.

Compare Fort Collins's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Fort Collins

As April unfolds in Fort Collins, it marks a notable shift in weather patterns compared to the chill of winter. While the month welcomes brighter days with soaring temperatures reaching up to 29°C, the average warmth provides a refreshing contrast to earlier months. However, it's also a time of transition, as nights can be quite chilly, dipping down to -13°C. April stands out with its mix of occasional precipitation, bringing a total of 53 mm over about 10 days, adding a touch of freshness to the environment. With humidity levels around 67%, this month serves as a bridge between the briskness of winter and the growing warmth of summer, highlighting the unique climate of Fort Collins. For a deeper dive into the climatic nuances of the region, be sure to check out Fort Collins Climate.