October Weather in Bozeman, United States

Last updated: February 24, 2025

Bozeman, United States, experiences a dynamic October, marked by a broad temperature range where maximums can reach 25°C (78°F) and plunge to minimums of -27°C (-17°F). The average temperature settles around a crisp 3°C (38°F), offering a taste of the impending winter. This month brings 68 mm (2.7 in) of precipitation over approximately 13 days, contributing to a relatively humid atmosphere with 72% humidity. As the landscape transitions into fall, October in Bozeman presents a striking blend of cool temperatures and occasional rainfall, perfect for outdoor enthusiasts and nature lovers alike.

October Temperature in Bozeman

As October arrives in Bozeman, the temperature begins to shift dramatically, signaling the transition to winter. Minimum temperatures plummet to around -27°C (-17°F), while the average hovers near 3°C (38°F), offering a stark contrast to the warmth of summer. Remarkably, the maximum temperatures can still reach a pleasant 25°C (78°F), showcasing the lingering echoes of autumn. This month typically marks the last chance for residents to enjoy milder days before the colder months settle in, presenting a unique blend of crisp air and vibrant fall colors. The overall trend reveals a stark drop from the balmy days of September, establishing October as a pivotal month for weather changes in this picturesque region.

October Weather in Bozeman: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Bozeman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec191829354657656354382820
Data source: Temperature data for Bozeman 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.

October Precipitation in Bozeman

In October, Bozeman experiences a notable increase in precipitation, receiving 68 mm (2.7 in) of rain across an average of 13 days. This uptick follows the drier summer months, where July and August featured significantly lower rainfall—just 39 mm (1.5 in) and 48 mm (1.9 in), respectively. As the temperatures begin to drop, October marks a transition into the wetter season, outpacing September’s 59 mm (2.3 in) over just 7 days. The consistent precipitation supports the region's vibrant fall foliage, while also preparing the landscape for the looming winter months. Thus, October's rainfall not only enriches the local ecosystem but also sets the stage for the cooler, more intense weather that follows.

October Precipitation Trends in Bozeman

The chart displays monthly precipitation patterns in Bozeman, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec30654786102104394859685037
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Bozeman

In October, Bozeman experiences a slight uptick in humidity, averaging around 72%. This marks a subtle transition from the drier late summer months, where humidity reaches a low of 67% in September. The cooler temperatures of fall begin to take hold, bringing a fresh, crisp atmosphere as the days shorten. Unlike the heavy dampness of winter, which spikes to 93% in January, October's humidity offers a comfortable balance, bridging the gap between the drier months of summer and the more humid conditions of winter. As the landscape shifts to rich autumn colors, the air retains a hint of moisture, enhancing the beauty of the season.

October Average Humidity in Bozeman

This chart illustrates the average monthly humidity levels in Bozeman, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%83%79%76%74%69%67%72%89%94%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Bozeman

In October, Bozeman experiences a UV Index of 6, signaling a high exposure category with a burn time of about 25 minutes. This marks a noticeable decrease from the peak months of May and June, which saw extreme levels at 11, necessitating quick precautions for skin protection. As the seasons shift, the UV Index gradually declines from the summer highs, emphasizing the importance of staying vigilant about sun safety even in the fall. With October's readings being considerably lower than mid-summer, it's a great time to enjoy outdoor activities while still being mindful of UV exposure. For more information on UV levels throughout the year, check out Bozeman UV Index.

Maximum UV Index Levels in Bozeman for October

The chart shows the monthly maximum UV Index (UVI) for Bozeman in October, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3578111110108642
Data source: Bozeman October 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.

October Sunshine in Bozeman

As October graces Bozeman with its presence, the city enjoys a delightful 239 hours of sunshine, a welcome contrast to the dwindling daylight of the approaching winter months. This month stands out as a transition from the peak summer brightness of 389 hours in July, highlighting a gradual decline in sunlight as autumn deepens. October's sunshine is an essential part of the vibrant fall scenery, nestled between the bountiful light of summer and the early dusk of winter. Following the lively summer, the days are still pleasantly warm, making it a beautiful time for outdoor exploration. The trend from July to October reflects a steady decrease in sunshine hours, signaling a shift in seasons and inviting residents and visitors alike to savor the stunning fall foliage before winter approaches.

Monthly Sunshine Duration in Bozeman: October Highlighted

The October sunshine duration represents the total number of hours Bozeman experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec145h175h267h272h311h350h389h345h277h239h192h181h
Data source: Bozeman October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bozeman During October

As October rolls into Bozeman, the likelihood of enjoying sunny weather is fairly moderate, with a 47% chance of sunshine. This positions it as a transitional month, sandwiched between the intense summer sun, peaking in June at 74%, and the cooler, cloudier days that start to set in as winter approaches. Interestingly, while October offers more sun than the chillier months of November (36%) and December (28%), it does experience a decline in bright days compared to the earlier fall months, notably September, which boasts a robust 70% chance of sun. Thus, while October may not bask in endless sunshine, it still presents opportunities for clear, crisp days amidst the autumn foliage.

Percentage of Sunny Days in October in Bozeman

The chart illustrates the percentage of sunny days in Bozeman throughout the year, with October 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 Bozeman experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec37%27%51%42%41%74%68%56%70%47%36%28%
Data source: Bozeman October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bozeman in October

As the vibrant colors of autumn unfold in Bozeman, October brings a notable shift in daylight duration, offering around 10 hours of light each day. This decrease follows a peak during the summer months, where daylight reached a generous 15 hours in June and July. With September's gradual drop to 12 hours, October marks a transition into shorter days as winter approaches, echoing the trend set in the preceding months. As daylight wanes, it invites a cozier atmosphere, perfect for enjoying the beautiful fall scenery that Bozeman has to offer. The rhythmic cycle of increasing and decreasing daylight throughout the year not only highlights the changing seasons but also invites residents and visitors to savor each distinctive phase of this picturesque Montana landscape.

Average Daylight Hours in Bozeman for October

The chart illustrates the variation in daylight duration in Bozeman throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 8m10h 23m11h 57m13h 34m14h 56m15h 37m15h 15m14h 1m12h 28m10h 52m9h 27m8h 43m
Data source: Bozeman daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Bozeman

As October sweeps into Bozeman, the wind begins to dance playfully at an average speed of 2.2 m/s (5 mph), mirroring the steady breezes from earlier months. Throughout the year, the wind remains relatively consistent, with most months hovering around this gentle pace. However, a trend emerges as the colder months approach; by November, the wind picks up slightly to 2.6 m/s (6 mph), hinting at the briskness that winter will soon bring. This maintains a fluid trajectory from the mild summer breezes, where July recorded the lightest winds at 1.8 m/s (4 mph), to the slightly stronger intermittent gusts of late fall. Overall, October serves as a graceful transition, bridging the calm, warm days of summer with the invigorating chill of winter.

Average October Wind Speed in Bozeman

The chart displays monthly wind speed patterns in Bozeman, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.22.12.22.22.11.82.12.12.2 m/s2.62.5
Data source: Bozeman October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Bozeman Compares to Other Months

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

October and January exhibit stark contrasts in weather conditions. In October, temperatures range from a chilly -27°C (-17°F) to a warm 25°C (78°F), with an average of 3°C (38°F). This month also sees significant precipitation, totaling 68 mm (2.7 in) over about 13 days, contributing to a humidity level of 72%. In contrast, January is colder overall, with temperatures ranging from -29°C (-20°F) to a maximum of just 6°C (43°F) and an average of -7°C (20°F). Precipitation decreases to 30 mm (1.2 in) over approximately 8 days, while humidity rises to a notable 93%. For a more detailed look at January weather, visit Bozeman weather in January.

When comparing the weather in October and February, there are notable differences in temperature and humidity levels. October typically features a wider range of temperatures, with a minimum of -27°C (-17°F) and a maximum reaching 25°C (78°F), resulting in a comfortable average of 3°C (38°F). In contrast, February tends to be much colder, with temperatures dipping to a minimum of -36°C (-32°F) and only peaking at 9°C (48°F), leading to a much chillier average of -8°C (18°F). Additionally, February experiences higher humidity, averaging 92%, compared to October's 72%. Precipitation is also comparable, with October receiving 68 mm (2.7 in) over 13 days, while February sees slightly less at 65 mm (2.5 in) across 14 days. For more detailed information on February weather, you can visit Bozeman weather in February.

When comparing the weather in October and March, we notice some significant differences. October tends to have a wider temperature range, with nighttime lows around -27°C (-17°F) and daytime highs averaging 3°C (38°F), peaking at 25°C (78°F). In contrast, March sees consistently cooler temperatures, with a minimum of -28°C (-18°F) and an average of -2°C (29°F), reaching a maximum of 16°C (61°F). Precipitation levels are also notable; October experiences about 68 mm (2.7 in) over 13 days, while March has less precipitation at 47 mm (1.8 in) over only 11 days. Humidity is higher in March at 89%, compared to 72% in October, which contributes to a distinctly different feel as the seasons transition. For more detailed insights, you can check out Bozeman weather in March.

When comparing the weather in October and April, both months experience a range of temperatures, but October tends to have slightly warmer average temperatures, with a maximum of 25°C (78°F) compared to April's 22°C (72°F). October's minimum temperature can drop to -27°C (-17°F), while April sees a milder low of -20°C (-4°F). Precipitation levels are higher in April, with 86 mm (3.4 in) over 15 days of rain, as opposed to October’s 68 mm (2.7 in) over 13 days. Humidity is also higher in April at 83%, compared to October's 72%. For more details on the weather specifics, check out Bozeman weather in April.

October and May present distinct contrasts in weather. In October, temperatures can plunge as low as -27°C (-17°F) at their minimum, though the average temperature hovers around a mild 3°C (38°F), reaching a maximum of 25°C (78°F). This month sees precipitation totalling 68 mm over 13 days, with humidity typically at 72%. In comparison, May offers a slightly warmer range, with minimum temperatures around -10°C (13°F) and an average of 8°C (46°F), while still peaking at 25°C (77°F). However, it experiences higher precipitation at 102 mm over 18 days, contributing to a humidity level of 79%. For more detailed insights, you can check Bozeman weather in May.

Comparing the weather in October and June reveals some notable differences. In October, temperatures can range dramatically from a minimum of -27°C (-17°F) to a maximum of 25°C (78°F), with an average temperature of 3°C (38°F). In contrast, June offers a warmer climate, with temperatures starting at a minimum of 0°C (32°F) and peaking at 33°C (92°F), averaging 14°C (57°F). Both months see considerable precipitation, with October receiving 68 mm (2.7 in) over 13 days and June experiencing a higher total of 104 mm (4.1 in) over 14 days. Despite slightly lower humidity in October at 72%, the difference is minimal compared to June's 76%. For more detailed insights, visit Bozeman weather in June.

When comparing the weather in October and July, significant differences emerge. In October, temperatures can drop as low as -27°C (-17°F), with an average of 3°C (38°F) and highs reaching 25°C (78°F), while July presents a much milder climate, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 34°C (94°F) and an average of 18°C (65°F). Additionally, October experiences more precipitation with 68 mm (2.7 in) over 13 days compared to July’s 39 mm (1.5 in) over just 8 days. Humidity levels are fairly similar, with October at 72% and July slightly higher at 74%. For more detailed insights about July weather in Bozeman, you can check Bozeman weather in July.

In October, temperatures can be quite extreme, ranging from a frigid minimum of -27°C (-17°F) to a pleasant maximum of 25°C (78°F), with an average temperature of only 3°C (38°F). In contrast, August enjoys a milder climate with minimum temperatures around 2°C (36°F) and a maximum of 33°C (92°F), leading to a more comfortable average of 17°C (64°F). While October experiences more precipitation with 68 mm (2.7 in) over 13 days, August is relatively drier, receiving 48 mm (1.9 in) over just 8 days. Humidity levels are fairly comparable, at 72% in October and 69% in August. For a closer look at August weather specifics, visit Bozeman weather in August.

In comparing the weather between September and October, October exhibits a more significant temperature range, with a minimum of -27°C (-17°F) and a maximum of 25°C (78°F), while September's temperatures fluctuate from a much milder -4°C (25°F) to a warm 33°C (92°F). The average temperature in September is notably higher at 12°C (54°F), compared to October's average of just 3°C (38°F). Additionally, October experiences slightly more precipitation, totaling 68 mm (2.7 in) over 13 days, compared to September's 59 mm (2.3 in) over only 7 days. Humidity levels are similar, with September at 67% and October a bit higher at 72%. For more details on the weather in September, you can refer to Bozeman weather in September.

October and November in Bozeman display contrasting weather patterns as the seasons transition. October typically features a broader temperature range, with lows reaching -27°C (-17°F) and highs soaring up to 25°C (78°F), while averaged out, temperatures sit around 3°C (38°F). In contrast, November sees a shift towards cooler conditions, with average temperatures dropping significantly to -2°C (28°F) and maximums capping at 19°C (66°F). Additionally, while October experiences more precipitation at 68 mm (2.7 in) across 13 days, November has slightly less, with 50 mm (2.0 in) recorded over 11 days. Humidity levels also rise in November to 89%, compared to October's 72%, contributing to a colder and potentially more overcast atmosphere. For more details, you can check Bozeman weather in November.

October and December present quite different weather patterns. In October, temperatures can vary significantly, with a minimum of -27°C (-17°F) and a maximum of 25°C (78°F), leading to an average of around 3°C (38°F). The month sees about 68 mm (2.7 in) of precipitation over 13 days, accompanied by a moderate humidity of 72%. In contrast, December is typically colder, featuring a minimum temperature of -29°C (-20°F) and a maximum of just 14°C (57°F), resulting in an average temperature of -7°C (20°F). This month is less rainy, with only 37 mm (1.5 in) of precipitation over 10 days, but it comes with higher humidity levels at 94%. For a more detailed look at the conditions in December, check out Bozeman weather in December.

Compare Bozeman's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Bozeman

As October unfolds in Bozeman, the weather takes a notable turn, transitioning from the warmth of summer to the chill of winter. The average temperatures settle around a brisk 3°C (38°F), with the potential for maximum highs to reach an unseasonably warm 25°C (78°F), which can feel like a fleeting farewell to warmer days. However, the minimum temperatures can plummet to an icy -27°C (-17°F), highlighting the stark contrast this month offers. With 68 mm (2.7 in) of precipitation over approximately half the month, October can be quite wet, leading to a noticeable increase in humidity at 72%. This blend of conditions creates an ever-changing atmosphere, making October a month of beautiful fall colors and unpredictable weather patterns. For more detailed insights into the climate in this enchanting city, visit Bozeman Climate.