Last updated: April 22, 2025
In Cornwall, Canada, October ushers in a transition of the seasons, showcasing a varied climate characterized by a maximum temperature of 24°C (75°F) and an average of 10°C (50°F). As the month unfolds, temperatures can dip to a cool -2°C (29°F), highlighting the chill that accompanies autumn. With 77 mm (3.0 in) of precipitation spread over 11 days, residents experience a mix of sunny and rainy spells, enveloped in an 85% humidity level that makes the air feel crisp and invigorating. This blend of conditions offers a vibrant tapestry, inviting both locals and visitors to savor the beauty of Cornwall's October landscape.
As October rolls into Cornwall, Canada, the temperatures begin to shift noticeably, marking a transition towards cooler months. With minimums dipping to around -2°C (29°F) and average highs reaching a comfortable 10°C (50°F), residents experience a refreshing fall chill. The maximum temperature can soar to a pleasant 24°C (75°F), making it a delightful time for outdoor activities and enjoying the vibrant autumn foliage. Compared to the warmer summer months, October presents a more temperate climate, encouraging both locals and visitors to relish the crisper air and captivating landscape as they embrace the season's change.
In October, Cornwall, Canada experiences a modest precipitation total of 77 mm (3.0 in), falling slightly below the monthly average for the year, which showcases the region's variable climate. Rainfall appears on approximately 11 days, striking a balance between the wetter months of September and November. This October's precipitation mirrors that of July and August but is notably less than the September total of 96 mm (3.8 in) and the approaching November's peak of 135 mm (5.3 in). As autumn deepens, these trends suggest a transition towards cooler, rainier conditions typical of the season, emphasizing how October serves as a bridge between the drier summer months and the notably wetter late fall.
In October, Cornwall, Canada experiences a comfortable humidity level of 85%, maintaining the trend of relatively stable moisture throughout the year. The humidity remains consistent as the seasons transition, with October's figures mirroring those of May and November. While the summer months, particularly August, peak at 87%, the fall months showcase a slight decrease, indicating a gradual return to lower moisture levels. Overall, Cornwall enjoys a well-balanced humidity profile, neither too dry nor excessively humid, making it a pleasant place as autumn sets in.
As October sweeps into Cornwall, Canada, the UV Index settles at a moderate 5, reflecting a notable shift from the very high levels of summer months. This decrease allows for a longer burn time of 30 minutes, making it essential to remain aware of sun exposure, especially during midday hours. Historically, the transition from the intense UV levels of June and July, which peaked at 10 and consistently hovered around 8, showcases a gradual tapering as the season changes. The trend indicates that while October offers a reprieve, sun safety remains vital, particularly as we approach the year’s end. For more details on the UV Index throughout the year, visit Cornwall UV Index.
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As October rolls in, Cornwall, Canada, bathes in a beautiful transition of light, boasting 220 hours of sunshine that heralds the shift into fall. This month marks a gentle decline from the summer peak, where July and August sparkle with an impressive 341 and 351 hours of sunlight, respectively. The gradual reduction in daylight continues from the vibrant days of September, which still holds 271 hours of golden rays. While October may not rival the intensity of summer, its sunny days, with vibrant foliage backdrop, create an enchanting atmosphere that invites locals and visitors alike to revel in the season's splendor. As we embrace cooler temperatures, the diminishing sunlight still offers moments of warmth and clarity, setting the stage for cozy autumn reflections.
In Cornwall, Canada, October brings an encouraging 34% chance of sunny weather, a slight uplift from the month's visibility earlier in the year, hovering around the 27%-45% mark in the spring months. As the seasons shift, the sun's presence begins to wane compared to the vibrant warmth of summer, seen in July and August with figures peaking at 27% and 44% respectively. However, October offers a gentle retreat from the harsher winter months that quickly follow, where the likelihood of sunshine dips to a cool 29% in December. So, while it may not boast the sunniest days, October still serves up a reasonable opportunity to enjoy the crisp autumn air under clear skies.
As October settles in Cornwall, Canada, the days begin to shorten, offering a notable transition from the sun-drenched summer months. Following June and July's peak of 15 hours of daylight, October brings a gentle decline to 10 hours, signifying the approach of winter. This decrease mirrors the gradual shift that occurs throughout the year, with daylight starting to dwindle after the vibrant energy of May and June. Interestingly, October aligns with the trend observed in January and November, where daylight is similarly reduced to 9 hours, suggesting a seasonal rhythm of retreating light as the colder months advance. The contrast between the long summer days and the shorter autumn evenings serves as a reminder of nature's cyclical dance, inviting residents and visitors alike to embrace the cozy charm of the season.
As October sweeps into Cornwall, Canada, the gentle rustle of autumn leaves is accompanied by a notable drop in wind speed, averaging just 4.5 m/s (10 mph). This decline marks the calmest month of the year, a contrast to the brisk winds of earlier months. Following a steady increase from the winter's whispery gusts in January to the year's peak in March and December, October offers a moment of respite before the winds pick up again in November. The transition from the warmer, breezier September days to October's tranquillity signifies nature's shift into its serene and crisp fall phase, inviting inhabitants to enjoy the vibrant foliage without the interruption of strong winds.
The weather in Cornwall 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 Cornwall and find detailed weather information for every month.
October and January offer distinctly contrasting weather experiences. In October, temperatures range from a minimum of -2°C (29°F) to a pleasant maximum of 24°C (75°F), with an average of 10°C (50°F). The month sees around 77 mm (3.0 in) of precipitation over 11 days, coupled with a high humidity of 85%. In sharp contrast, January can bring much colder conditions, with temperatures dropping to a minimum of -20°C (-3°F) and an average of -5°C (23°F); the maximum reaches only 14°C (58°F). January experiences slightly higher precipitation at 81 mm (3.2 in) over just 10 days and maintains a similar humidity level of 84%. For more detailed insights, check out Cornwall weather in January.
October and February present starkly contrasting weather conditions. In October, temperatures range from a mild -2°C (29°F) at night to a comfortable 24°C (75°F) during the day, with an average of 10°C (50°F). The month sees about 77 mm (3.0 in) of precipitation over 11 days, accompanied by relatively high humidity at 85%. In contrast, February plunges into the heart of winter, with temperatures dipping as low as -20°C (-4°F) and an average of -5°C (22°F), creeping up to a maximum of only 9°C (49°F). With higher precipitation at 93 mm (3.7 in) spread across 12 days, February maintains a slightly lower humidity level at 84%. For more specific insights into winter conditions, check out Cornwall weather in February.
When comparing the weather in October and March, a noticeable shift in temperatures and precipitation patterns can be observed. October enjoys milder conditions with a minimum temperature of -2°C (29°F) and an average of 10°C (50°F), while March is significantly colder, starting at a minimum of -19°C (-2°F) and averaging -2°C (28°F). Despite October having slightly more precipitation at 77 mm (3.0 in) over 11 days, March closely follows with 75 mm (2.9 in) over 13 days, contributing to a similarly high humidity level of 86%. Overall, October presents a more temperate climate, making it feel much more inviting compared to the chill of March. For a deeper dive into March weather specifics, you can refer to Cornwall weather in March.
When comparing the weather in October and April, one notable difference is the average temperatures, with October offering a milder range from -2°C (29°F) to 24°C (75°F), while April's temperatures are cooler, ranging from -8°C (18°F) to 18°C (65°F). April also tends to be wetter, with a precipitation level of 85 mm (3.4 in) across 12 days compared to October’s 77 mm (3.0 in) over 11 days. Both months have relatively high humidity, with October at 85% and April slightly higher at 86%. For more detailed insights into April's weather in Cornwall, you can check Cornwall weather in April.
In comparing the weather of October and May, both months showcase a similar range in maximum temperatures, peaking at around 24°C (75°F) in October and 24°C (76°F) in May. However, October typically experiences slightly milder average temperatures at 10°C (50°F), compared to May's average of 9°C (49°F). Precipitation levels are fairly similar, with October receiving 77 mm (3.0 in) over 11 days, while May has slightly higher precipitation at 88 mm (3.5 in) across 13 days. Notably, both months maintain a consistent humidity level of 85%. For a closer look at May's weather patterns, you can check out Cornwall weather in May.
In comparing the weather of October and June, October typically experiences cooler temperatures, with averages around 10°C (50°F) and a maximum of 24°C (75°F), while June boasts warmer averages at 15°C (60°F) and peaks of 29°C (84°F). Precipitation is slightly more prevalent in June, with 97 mm (3.8 in) over 12 days compared to October's 77 mm (3.0 in) over 11 days. Humidity levels are also quite high in both months, with October at 85% and June slightly lower at 82%, creating a generally moist atmosphere in either case. For those interested in more details about June weather, you can check Cornwall weather in June.
When comparing the weather in October to that of July, notable differences emerge. October experiences a wider temperature range, with minimums dipping to -2°C (29°F) and maximums reaching up to 24°C (75°F), while July maintains a warmer climate with minimum temperatures around 11°C (52°F) and highs peaking at 30°C (85°F). Both months see a fair amount of precipitation, with October receiving 77 mm (3.0 in) over about 11 days, compared to July’s 68 mm (2.7 in) over around 10 days. Humidity levels are quite similar, hovering around 85% in October and slightly higher at 86% in July. For a closer look at weather specifics, you can refer to this link: Cornwall weather in July.
October weather in Cornwall exhibits a significant drop in temperature compared to August, with average daily highs of 24°C (75°F) in October declining to just 10°C (50°F) in October. The minimum temperatures also reflect this shift, plummeting from 11°C (51°F) in August to as low as -2°C (29°F) in October. Both months experience similar levels of precipitation, with October receiving 77 mm (3.0 in) over approximately 11 days compared to August’s 73 mm (2.9 in) over 10 days. However, October’s high humidity level of 85% just slightly undercuts August's 87%, contributing to a distinctly cooler and more autumnal feel in the air. For further details, you can check out Cornwall weather in August.
In comparing the weather between September and October, October experiences cooler temperatures overall, with a minimum of -2°C (29°F) and an average of 10°C (50°F), while September boasts a milder minimum of 3°C (38°F) and an average of 16°C (61°F). The maximum temperatures also reflect this trend, with October peaking at 24°C (75°F) compared to September's high of 27°C (82°F). In terms of precipitation, October has slightly less rainfall at 77 mm (3.0 in) over 11 days, compared to September's 96 mm (3.8 in) over 10 days. Despite the slowing rainfall, both months share a consistent humidity level of 85%. For a detailed look at September weather, you can check Cornwall weather in September.
October and November present a notable shift in weather patterns. In October, temperatures range from a minimum of -2°C (29°F) to a maximum of 24°C (75°F), with an average of 10°C (50°F). The month experiences around 77 mm (3.0 in) of precipitation over approximately 11 days, while humidity remains consistently high at 85%. In contrast, November sees a significant drop in temperatures, with a minimum of -12°C (10°F) and an average of just 4°C (39°F). Although the maximum temperature still reaches up to 20°C (68°F), precipitation increases to 135 mm (5.3 in) across 15 days, maintaining the same humidity level. For more detailed insights, check out Cornwall weather in November.
In comparing the weather conditions of October and December, notable differences emerge. October experiences a more mild climate, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 24°C (75°F) and an average of 10°C (50°F). The month sees a total precipitation of 77 mm (3.0 in) over 11 days, coupled with high humidity levels at 85%. In contrast, December brings a marked chill, with temperatures dipping dramatically, featuring a minimum of -19°C (-3°F) and an average of -2°C (29°F), peaking at 14°C (58°F). This month also records higher precipitation at 97 mm (3.8 in) over 13 days, while humidity remains relatively stable at 84%. For a closer look at what to expect, check out Cornwall weather in December.
As October graces Cornwall, the weather transforms, offering a delightful mix that stands apart from the warmer months. With maximum temperatures gently declining from summer highs, the crispness of autumn begins to set in, giving way to cooler averages that invite cozy layers. This month typically experiences increased rainfall, with more days of precipitation compared to the dry summer, contributing to the enchanting fall foliage. Additionally, humidity levels remain elevated, further enhancing the rich, earthy scents of the season. For a deeper dive into the unique climatic shifts you can expect in Cornwall, check out Cornwall Climate.