September Weather in Dawson City, Canada

Last updated: April 22, 2025

In Dawson City, Canada, September brings a refreshing transition into autumn, characterized by a maximum temperature peaking at 22°C (72°F) and an average of 6°C (44°F). As days grow cooler, the temperature can dip as low as -7°C (20°F), urging residents and visitors to embrace warmer attire. This month experiences a modest rainfall of 38 mm (1.5 in) over approximately 9 days, contributing to a humid atmosphere with levels reaching 91%. Whether exploring the vibrant fall foliage or enjoying the unique local culture, September in Dawson City offers a crisp and invigorating experience.

September Temperature in Dawson City

In September, Dawson City's temperatures begin to hint at the approach of winter, showcasing a noticeable transition from summer's warmth. The average temperature settles around 6°C (44°F), with daily highs reaching up to 22°C (72°F), allowing for some pleasantly mild days. However, the nights cool down significantly, dropping to a brisk -7°C (20°F), reminding residents of the stark temperature swings characteristic of this region. As the month unfolds, these temperatures mark a departure from the balmy days of August, laying the groundwork for the colder months ahead. The shifting weather not only reflects the changing seasons but also offers a beautiful backdrop for the breathtaking autumn landscapes that define this historic Yukon town.

September Weather in Dawson City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Dawson City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec-12-9929485861554327-1-6
Data source: Temperature data for Dawson City 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.

September Precipitation in Dawson City

September in Dawson City, Canada, sees a noteworthy shift in precipitation patterns as the summer warmth gives way to the crispness of autumn. With 38 mm (1.5 in) of rain spread over 9 days, this month marks a distinctive increase compared to the drier earlier months, such as January through July, which typically experience less than 55 mm of precipitation. However, September's total is a significant drop from August’s 70 mm (2.8 in), signaling a transition in the weather forecast. The gradual decrease in rainfall days towards October, which averages only 8 days, reinforces the notion that although September is wetter than early summer, the northwest territories are preparing for the drier months ahead. The evolving precipitation trends reflect not only the changing seasons but also the profound natural rhythms that characterize Dawson City.

September Precipitation Trends in Dawson City

The chart displays monthly precipitation patterns in Dawson City, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec121311224977547038363227
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dawson City

In Dawson City, Canada, September brings a noteworthy shift in humidity levels, settling at 91%, which reflects a slight uptick from the summer months. As the seasons transition, the air retains more moisture compared to the preceding months of July and August, which hovered around 86% and 89% respectively. This gradual increase foreshadows the even more saturated conditions of autumn and winter, as October's humidity spikes to 98% and remains near perfect with 100% in November. Overall, September serves as a pivotal point in returning to the high humidity that characterizes the long, cold months of winter, marking the end of a short-lived summer respite.

September Average Humidity in Dawson City

This chart illustrates the average monthly humidity levels in Dawson City, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%91%87%81%83%86%89%91%98%100%99%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dawson City

As September arrives in Dawson City, Canada, residents and visitors can expect a moderate UV Index of 3, indicating a slight uptick from the summer months. While the burn time remains steady at 30 minutes, it serves as a reminder that even as the days grow shorter and cooler, UV rays can still pose a risk. This month marks a transition from the height of summer where the UV Index was consistently at 5, suggesting that while exposure is less intense, it's still wise to take precautions. As autumn unfolds, it's important to stay aware of these changing conditions. For more information on UV levels throughout the year, check out Dawson City UV Index.

Maximum UV Index Levels in Dawson City for September

The chart shows the monthly maximum UV Index (UVI) for Dawson City in September, 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.
JanFebMarAprMayJunJulAugSepOctNovDec112455553211
Data source: Dawson City September 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.

September Sunshine in Dawson City

As summer gently transitions into fall, September in Dawson City offers a delightful blend of sunshine and crisp air, with an impressive 240 hours of daylight. This month witnesses a notable decrease from the sun-soaked days of July, which boasts a peak of 392 hours, yet still shines brighter than the dimmer months ahead. After the vibrancy of summer, September serves as a contemplative time, capturing the essence of fading warmth while hinting at the cooler months to come. In this enchanting northern city, the sunlight continues to illuminate the rugged beauty of the landscape, inviting residents and visitors alike to savor the lingering glow before winter sets in.

Monthly Sunshine Duration in Dawson City: September Highlighted

The September sunshine duration represents the total number of hours Dawson City experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec58h140h249h327h386h382h392h296h240h134h83h48h
Data source: Dawson City September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Dawson City During September

In Dawson City, Canada, September marks a transitional period as summer fades and autumn approaches, reflected in a 30% chance of sunny weather. This is a slight decrease from the more favorable conditions in mid-summer, where June and July showcase higher probabilities of sunshine at 36% and 37%, respectively. The trend indicates that as the year progresses, particularly from August’s 27% to October’s 19%, the likelihood of sunny days consistently wanes. While September may not boast the sunniest conditions, it still offers a glimmer of brightness, inviting residents and visitors alike to enjoy the early fall atmosphere before the clouds take over.

Percentage of Sunny Days in September in Dawson City

The chart illustrates the percentage of sunny days in Dawson City throughout the year, with September 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 Dawson City experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%46%43%54%27%36%37%27%30%19%20%23%
Data source: Dawson City September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Dawson City in September

As September unfolds in Dawson City, Canada, the daylight begins to wane, offering about 12 hours of daylight—a gentle transition from the long, sunlit days of summer. This month marks a distinct shift, as daylight hours dip from the 16 hours experienced in August. Moving from the vibrant, sun-drenched days of June and July, which boast nearly 20 hours of brightness, September also foreshadows the approaching shorter days of fall. With daylight steadily decreasing through October and onward, residents and visitors alike relish these lingering moments of light, making the most of the crisp air and colorful autumn scenery before winter's embrace sets in.

Average Daylight Hours in Dawson City for September

The chart illustrates the variation in daylight duration in Dawson City throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 33m8h 36m11h 52m15h 11m18h 30m20h 46m19h 24m16h 10m12h 53m9h 37m6h 24m4h 21m
Data source: Dawson City daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Dawson City

As September graces Dawson City, the winds whisper at an average speed of 1.8 m/s (4 mph), signifying a gentle transition towards autumn. This steady breeze echoes a trend from the summer months, where wind speeds lingered around the same mark, suggesting a consistent atmospheric rhythm in the region. Notably, the wind picks up slightly from the preceding months of July (1.7 m/s) and August (1.8 m/s), offering a refreshing lift as the leaves begin to change. As the temperatures cool and the days shorten, these breezes provide a crisp reminder of the fleeting warmth of summer, setting the stage for the colder months ahead.

Average September Wind Speed in Dawson City

The chart displays monthly wind speed patterns in Dawson City, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.51.62.22.01.71.71.81.8 m/s1.71.41.5
Data source: Dawson City September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Dawson City Compares to Other Months

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

September and January present strikingly contrasting weather conditions. In September, temperatures range from a chilly -7°C (20°F) at night to a pleasant 22°C (72°F) during the day, with an average of 6°C (44°F). The month sees about 38 mm (1.5 in) of precipitation over 9 days and humidity levels around 91%. In contrast, January is frigid, with temperatures plummeting from a minimum of -48°C (-55°F) to a maximum of just 2°C (36°F), averaging -24°C (-12°F). Precipitation is scarce at only 12 mm (0.5 in) over just 2 days, yet the humidity is slightly higher at 97%. For more details about January weather conditions, you can check Dawson City weather in January.

In September, temperatures in Dawson City range from a chilly -7°C (20°F) at night to a pleasant 22°C (72°F) during the day, with an average of around 6°C (44°F). The month sees about 38 mm (1.5 in) of precipitation over nine days, accompanied by high humidity at 91%. In stark contrast, February brings a much harsher climate, with temperatures plummeting to a minimum of -45°C (-48°F) and averaging -23°C (-9°F), peaking at just 2°C (35°F). Precipitation is significantly lower in February, with only 13 mm (0.5 in) falling over four days, and humidity is slightly higher at 95%. For more information on the conditions during this cold month, visit Dawson City weather in February.

When comparing the weather in September and March, it's clear that there is a significant shift in temperatures and precipitation levels. September enjoys milder conditions with a minimum temperature of -7°C (20°F) and an average of 6°C (44°F), peaking at a pleasant 22°C (72°F). This month also sees a fair amount of rainfall, accumulating 38 mm (1.5 in) over about 9 days, though humidity remains high at 91%.

In contrast, March presents a far more challenging climate, with temperatures plummeting to a minimum of -38°C (-35°F) and averaging a frigid -13°C (10°F). The maximum temperature barely reaches 10°C (51°F) during this month. Snowfall is minimal, with only 11 mm (0.4 in) of precipitation over 4 days, while humidity stays consistent at 91%. For a detailed overview of the conditions in March, you can visit Dawson City weather in March.

In comparing the weather of September and April, we see notable differences in temperature and precipitation. September typically has a milder climate, with average temperatures ranging from a minimum of -7°C (20°F) to a maximum of 22°C (72°F), contrasted by April's colder range from -28°C (-18°F) to a maximum of 15°C (60°F). Precipitation is more frequent in September, occurring on 9 days and totaling 38 mm (1.5 in), while April experiences significantly less rain, with only 22 mm (0.9 in) over 4 days. Humidity levels also remain high in both months, with September at 91% and April at 87%. For a detailed look at April's weather patterns, you can check the link: Dawson City weather in April.

In September, the weather tends to be cooler, with average temperatures around 6°C (44°F) and a maximum of 22°C (72°F), while May sees warmer conditions, with average temperatures at 9°C (48°F) and highs reaching 26°C (79°F). Both months experience significant humidity, with September at 91% and May slightly lower at 81%. Precipitation is also more prevalent in May, totaling 49 mm (1.9 in) over 12 days, compared to September's 38 mm (1.5 in) over 9 days. For more detailed information on May weather in Dawson City, you can visit Dawson City weather in May.

In comparing the weather between September and June, September tends to be cooler, with average temperatures ranging from a minimum of -7°C (20°F) to a maximum of 22°C (72°F), as opposed to June, which experiences milder temperatures with a minimum of 1°C (34°F) and a maximum of 29°C (85°F). Additionally, September sees less precipitation overall, with 38 mm (1.5 in) over 9 days, compared to June's 77 mm (3.0 in) over 15 days. Humidity levels in September are slightly higher at 91%, while June maintains a lower humidity level of 83%. For a more detailed look at June weather, you can visit Dawson City weather in June.

When comparing the weather between September and July, September showcases cooler temperatures, with a minimum of -7°C (20°F) and an average of 6°C (44°F), contrasting sharply with July’s warmer minimum of 4°C (39°F) and average of 16°C (62°F). While both months experience a fair amount of precipitation, with September receiving 38 mm (1.5 in) over 9 days and July recording 54 mm (2.1 in) over 12 days, the humidity levels are slightly higher in September at 91%, compared to July’s 86%. For more information on the summer conditions, you can check out Dawson City weather in July.

September weather in Dawson City features cooler temperatures compared to August, with a minimum of -7°C (20°F) and an average of 6°C (44°F), while August sees milder temperatures, reaching a minimum of -2°C (28°F) and an average of 13°C (55°F). The maximum temperature in September is 22°C (72°F), but in August, it can soar up to 30°C (85°F), making August the warmer month overall. In terms of precipitation, September receives 38 mm (1.5 in) over 9 days, while August is wetter with 70 mm (2.8 in) across 13 days. Humidity levels are slightly higher in September at 91% compared to August's 89%. For a more detailed look at August weather, visit Dawson City weather in August.

September and October weather show a significant shift in temperatures and conditions. In September, temperatures range from a minimum of -7°C (20°F) to a maximum of 22°C (72°F), with an average of 6°C (44°F). The month experiences 38 mm (1.5 in) of precipitation over 9 days, and humidity levels hover at 91%. In contrast, October sees much colder temperatures, with a minimum of -23°C (-9°F) and a maximum of 16°C (61°F), averaging -3°C (27°F). Despite slightly lower precipitation at 36 mm (1.4 in) over 8 days, the humidity rises to 98%. This stark change marks a transition towards a more winter-like climate, making it crucial to prepare for colder weather ahead. For more details, check Dawson City weather in October.

In September, weather conditions in Dawson City are relatively mild, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 22°C (72°F) and an average of 6°C (44°F). The month sees about 38 mm (1.5 in) of precipitation over approximately 9 days, with humidity levels at 91%. In contrast, November brings a stark shift, featuring much colder temperatures that dip as low as -39°C (-39°F) and hover around an average of -18°C (-1°F), peaking at 0°C (32°F). Precipitation decreases slightly to 32 mm (1.2 in) across about 8 days, while humidity escalates to a full 100%. For more information on the weather specifics in November, you can visit Dawson City weather in November.

In September, temperatures range from a chilly -7°C (20°F) at night to a comfortable 22°C (72°F) during the day, with an average of 6°C (44°F). The month experiences 38 mm (1.5 in) of precipitation over about 9 days, with humidity levels at 91%. In contrast, December brings much harsher weather conditions, with temperatures plummeting to a minimum of -44°C (-46°F) and an average of -21°C (-6°F), only reaching a maximum of 2°C (36°F). Precipitation in December is lower at 27 mm (1.1 in), occurring over just 5 days, but humidity rises significantly to 99%. For more details on the December climate specifics, you can visit Dawson City weather in December.

Compare Dawson City's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Dawson City

As summer transitions to fall, September in Dawson City offers a notable shift in weather patterns compared to the warmer months. With average temperatures dipping to a brisk 6°C, the air grows crisper, inviting the vibrant colors of autumn. While daytime highs can still reach a pleasant 22°C, the nights can bring a chilly reminder of the approaching winter, with lows plummeting to -7°C. Rainfall is also more prevalent, with around nine days of precipitation contributing to the month’s notable humidity of 91%. This dramatic change marks September as a time of transformation, making it a unique month to experience the beauty of Dawson City. For a more comprehensive overview of the seasonal climate, check out Dawson City Climate.