March Weather in Sun Valley, United States

Last updated: February 24, 2025

March in Sun Valley, United States, presents a crisp winter tableau, with temperatures ranging from a brisk maximum of 10°C (50°F) to a chilly minimum of -22°C (-7°F). The average temperature hovers around -3°C (26°F), giving the month a distinct bite. Precipitation is notable, with 60 mm (2.4 in) spread over 12 days, contributing to a humid atmosphere that averages 85%. This combination of cold, humidity, and precipitation paints a picture of a transitional period, hinting at the impending arrival of spring amidst the lingering chill of winter.

March Temperature in Sun Valley

As winter slowly releases its grip in Sun Valley, March marks a significant shift in temperatures, heralding the arrival of spring. With a minimum of -22°C (-7°F) and an average rising to -3°C (26°F), the chill begins to ease, making room for more pleasant days. The maximum temperature climbs to around 10°C (50°F), indicating a welcome transition from the frigid depths of January and February, which recorded extreme lows of -27°C (-16°F) and -22°C (-8°F), respectively. This gradual warming trend not only invites locals and visitors alike to embrace outdoor activities but also hints at the vibrant life that emerges as the snow melts. As the month progresses, the promise of milder days ahead becomes increasingly palpable, illustrating nature’s slow but steady return to warmth.

March Weather in Sun Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Sun Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec171826313952626050352616
Data source: Temperature data for Sun Valley 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.

March Precipitation in Sun Valley

In March, Sun Valley experiences a slight increase in precipitation compared to both January and April, with 60 mm (2.4 in) falling over 12 days. This mid-spring month continues the trend established in February, which was the wettest month thus far, but offers a respite from February's higher total of 86 mm (3.4 in). As winter recedes, these early spring rains contribute vital moisture to the region, marking a transition towards the drier months that follow. Interestingly, while precipitation diminishes in the summer, March remains a key player in setting the stage for the vibrant growth that characterizes the landscape in the upcoming months.

March Precipitation Trends in Sun Valley

The chart displays monthly precipitation patterns in Sun Valley, with values for each month alongside March's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec568660526146153330424649
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Sun Valley

March in Sun Valley, United States, offers a notable drop in humidity, reaching 85% after the wetter winter months of January and February, which average around 91% and 92%, respectively. This decrease signals the beginning of a transitional phase as the region shifts from its humid winter to the drier conditions that characterize late spring and summer. By April, humidity falls even further to 76%, continuing a steady decline that eventually leads to the dry months of July and August, where levels plummet to 53% and 42%. This trend highlights Sun Valley's transformative climate, where March serves as a bridge between the moisture-laden winter and the arid warmth of summer.

March Average Humidity in Sun Valley

This chart illustrates the average monthly humidity levels in Sun Valley, with March's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how March's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%85%76%66%62%53%42%46%64%83%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Sun Valley

As March rolls into Sun Valley, the UV Index surges to 8, marking a shift to the very high exposure category with a reduced burn time of just 15 minutes. This significant increase from January's moderate 3 and February's moderate 5 highlights a notable trend of intensifying sun exposure as spring approaches. The transition to March not only signifies warmer weather but also underscores the importance of sun safety as the UV levels climb even higher in the ensuing months. Looking ahead, April sees the UV Index reach 9, and by May, it peaks at an extreme 11. Staying informed is crucial, so be sure to check out the detailed insights at Sun Valley UV Index for tips on how to protect yourself from harmful UV rays as the season progresses.

Maximum UV Index Levels in Sun Valley for March

The chart shows the monthly maximum UV Index (UVI) for Sun Valley in March, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3589111211109643
Data source: Sun Valley March 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.

March Sunshine in Sun Valley

March in Sun Valley heralds the arrival of longer, sun-soaked days, with an impressive 274 hours of sunshine illuminating the landscape. This marks a significant increase from the 188 hours basked in during February, showcasing a clear transition into spring. As the days stretch into April, the sunshine continues to flourish, reaching 307 hours, hinting at the adventure and outdoor activities that await. This upward trend in sunlight not only brings a vibrant atmosphere but also invites both residents and visitors to embrace the beauty of nature in full bloom, making March a pivotal month in the journey toward the sunlit summer ahead.

Monthly Sunshine Duration in Sun Valley: March Highlighted

The March sunshine duration represents the total number of hours Sun Valley experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec142h188h274h307h352h384h402h364h307h264h211h178h
Data source: Sun Valley March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sun Valley During March

As March unfolds in Sun Valley, the likelihood of enjoying sunny weather reaches a promising 57%, marking a delightful transition from the chill of winter. This increase is notably higher than the 35% chance in January and 40% in February, signaling a shift towards brighter days. With only a slight dip in April to 56%, it's evident that March serves as a pivotal month, bridging the gap between the winter frost and the summer sun. As spring approaches, this surge in sunny possibilities paves the way for outdoor activities and basking in the warming rays, making March an inviting time to experience the beauty of Sun Valley.

Percentage of Sunny Days in March in Sun Valley

The chart illustrates the percentage of sunny days in Sun Valley throughout the year, with March 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 Sun Valley experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec35%40%57%56%46%78%71%71%82%42%38%27%
Data source: Sun Valley March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sun Valley in March

As winter recedes, March brings a refreshing shift in daylight to Sun Valley, United States, marking the transition to longer days and brighter skies. With 11 hours of daylight, March sees a noticeable increase from February's 10 hours, signaling the approach of spring and the rejuvenation of nature. This trend paves the way for even more daylight in the coming months, with April blooming into 13 hours and May extending to 14 hours. The gradual increase not only invites outdoor activities but also enhances the vibrant atmosphere of the region, creating an uplifting experience for residents and visitors alike. As daylight continues to stretch, Sun Valley embraces longer, sunlit days that seem to reflect the awakening beauty of the season.

Average Daylight Hours in Sun Valley for March

The chart illustrates the variation in daylight duration in Sun Valley throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 20m10h 30m11h 58m13h 28m14h 44m15h 22m15h 1m13h 53m12h 26m10h 57m9h 38m8h 58m
Data source: Sun Valley daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in Sun Valley

In March, Sun Valley experiences a gentle breeze, with an average wind speed of 1.9 m/s (4 mph), slightly lower than the two months preceding it. This trend reflects a seasonal pattern where the winter winds begin to soften as spring approaches. While January and February see their peaks at 1.7 m/s and 2.1 m/s respectively, March maintains a manageable air flow, hinting at the promise of warmer and sunnier days ahead. As the month transitions into April, the wind settles into a consistent rhythm, averaging around 2.0 m/s (4 mph). This mild wind serves as a refreshing reminder of the changing seasons, making March an ideal time for outdoor activities in the breathtaking Sun Valley landscape.

Average March Wind Speed in Sun Valley

The chart displays monthly wind speed patterns in Sun Valley, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.72.11.9 m/s2.02.02.41.92.02.12.11.82.0
Data source: Sun Valley March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in Sun Valley Compares to Other Months

The weather in Sun Valley changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of March's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Sun Valley and find detailed weather information for every month.

In comparing the weather between March and January, it’s clear that March tends to be milder. January records lower temperatures, with a minimum of -27°C (-16°F) and an average of -8°C (17°F), while March sees a minimum of -22°C (-7°F) and a more tolerable average of -3°C (26°F). Additionally, March experiences slightly higher maximum temperatures, capping at 10°C (50°F) compared to January’s maximum of 2°C (36°F). Precipitation is similar in both months, with March receiving 60 mm (2.4 in) over 12 days and January slightly less at 56 mm (2.2 in) over 10 days. Humidity levels are also higher in January at 91%, compared to March’s 85%. For more details on January weather, you can check out Sun Valley weather in January.

In comparing the weather patterns of March and February, we observe that March experiences slightly warmer average temperatures, with a minimum of -22°C (-7°F) and a maximum of 10°C (50°F), while February's averages are a bit colder, ranging from -22°C (-8°F) to a maximum of 6°C (42°F). Precipitation is also relatively high in both months, with March receiving 60 mm (2.4 in) over 12 days and February slightly wetter at 86 mm (3.4 in) over 13 days. Additionally, humidity levels remain high in both months, but are slightly more pronounced in February at 92%, compared to March's 85%. For a more detailed look at February's weather specifics, you can refer to Sun Valley weather in February.

March and April both exhibit cold temperatures, but April generally offers a slight improvement as winter recedes. In March, the average temperature hovers around -3°C (26°F) with a maximum of 10°C (50°F) and a notable minimum of -22°C (-7°F). As the month progresses, March experiences 60 mm (2.4 in) of precipitation over 12 days and high humidity levels at 85%. Conversely, April sees a rise in average temperatures to 0°C (31°F), with a maximum of 14°C (57°F) and a minimum of -16°C (3°F). Precipitation decreases slightly to 52 mm (2.0 in) over 11 days, accompanied by reduced humidity at 76%. For a detailed look at how the weather transforms throughout this transitional month, check out Sun Valley weather in April.

March and May present contrasting weather experiences in terms of temperature and humidity. In March, temperatures can plummet as low as -22°C (-7°F), with an average of -3°C (26°F) and a maximum reaching just 10°C (50°F). The month sees around 60 mm (2.4 in) of precipitation over about 12 days, coupled with high humidity levels at 85%. In stark contrast, May offers milder conditions, where temperatures range from a minimum of -12°C (10°F) to a comfortable maximum of 24°C (75°F), with an average of 4°C (40°F). Despite receiving similar precipitation at 61 mm (2.4 in) over approximately 13 days, May's humidity is noticeably lower at 66%, making it feel much more pleasant. For more specifics on May weather, check Sun Valley weather in May.

March weather is characterized by much colder temperatures, with minimums dropping to -22°C (-7°F) and an average of -3°C (26°F), while maximums only reach up to 10°C (50°F). This month also sees a high level of humidity at 85% and experiences precipitation on about 12 days, totaling 60 mm (2.4 in). In contrast, June brings a significant warm-up, with minimum temperatures at -4°C (24°F) and average temperatures climbing to 11°C (52°F), peaking at a maximum of 28°C (82°F). Precipitation decreases to 46 mm (1.8 in) over 9 days, and the humidity drops to a more comfortable 62%. For a detailed look at June weather, you can visit Sun Valley weather in June.

March and July present stark contrasts in weather conditions. In March, temperatures range from a frigid minimum of -22°C (-7°F) to a maximum of 10°C (50°F), with an average temperature of -3°C (26°F). The month experiences considerable precipitation of 60 mm (2.4 in) over 12 days, coupled with high humidity levels at 85%. In contrast, July boasts a milder climate, with temperatures ranging from a minimum of 0°C (32°F) to a comfortable maximum of 28°C (83°F), and an average temperature of 16°C (62°F). The summer month sees significantly less precipitation, totaling only 15 mm (0.6 in) over just 4 days, and the humidity drops to a more manageable 53%. For a closer look at the July weather, you can check Sun Valley weather in July.

March and August present stark contrasts in weather conditions. In March, temperatures can plummet to a minimum of -22°C (-7°F), with an average temperature around -3°C (26°F) and a maximum of only 10°C (50°F). The month is characterized by relatively high humidity at 85% and frequent precipitation, averaging 60 mm (2.4 in) over 12 days. In contrast, August warms up significantly, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 30°C (86°F) and an average of 15°C (60°F). The humidity drops to a much more comfortable 42%, and precipitation decreases to 33 mm (1.3 in) over just 6 days, making it a drier month overall. For a more detailed look at August weather, you can visit Sun Valley weather in August.

March and September showcase a stark contrast in weather conditions. In March, temperatures range from a chilly minimum of -22°C (-7°F) to a mild maximum of 10°C (50°F), with an average of -3°C (26°F). The month experiences significant precipitation of 60 mm (2.4 in) over 12 days, accompanied by high humidity levels at 85%. Conversely, September offers a more temperate climate, with temperatures ranging from a minimum of -13°C (10°F) to a comfortable maximum of 29°C (84°F), averaging around 10°C (51°F). Precipitation in September is notably lower at 30 mm (1.2 in) spread over just 5 days, and the humidity drops to a more pleasant 46%. For a detailed view of weather patterns, you can check out Sun Valley weather in September.

In March, temperatures begin to rise but still remain quite chilly, with averages around -3°C (26°F) and highs of 10°C (50°F). The humidity is notably high at 85%, and the month sees around 60 mm (2.4 inches) of precipitation over approximately 12 days. Conversely, October experiences a wider temperature range, where the minimum dips to -24°C (-11°F) but the maximum can soar to 22°C (71°F), leading to an average of 2°C (35°F). With lower humidity at 64% and less precipitation (42 mm or 1.6 inches across 7 days), October offers a more pleasant, drier experience. For more detailed insights, you can visit Sun Valley weather in October.

March and November exhibit similar average temperatures, with March having a slightly lower minimum of -22°C (-7°F) compared to November's -23°C (-10°F). However, March experiences a more significant range in temperatures, reaching a maximum of 10°C (50°F), while November peeks at 12°C (55°F). In terms of precipitation, March is wetter with 60 mm (2.4 in) over 12 days compared to November's 46 mm (1.8 in) across 9 days. Humidity levels are comparable, with March at 85% and November slightly lower at 83%. For more insights into November weather, you can check out Sun Valley weather in November.

In March, temperatures generally range from a chilly -22°C (-7°F) at their lowest to a milder max of 10°C (50°F), averaging around -3°C (26°F). The month experiences around 60 mm (2.4 in) of precipitation over approximately 12 days, accompanied by a humidity level of 85%. In contrast, December is colder, with temperatures dropping to a minimum of -25°C (-12°F) and peaking at 8°C (46°F), averaging -9°C (16°F). December sees slightly less precipitation at 49 mm (1.9 in) over about 10 days and higher humidity at 87%. For more detailed weather insights, check out Sun Valley weather in December.

Compare Sun Valley's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in Sun Valley

As March unfolds in Sun Valley, it marks a significant transition from the winter chill, offering a mix of late-season snow and the first hints of spring warmth. With temperatures gradually climbing, March stands out as a month of contrasts, where chilly nights can plummet to freezing low, while daytimes flirt with mildness, creating a unique atmosphere. The increased precipitation and higher humidity levels remind residents and visitors alike that winter isn’t quite ready to let go just yet. For a deeper dive into how March weather compares with other months and to explore the broader climatic context, check out Sun Valley Climate.