Last updated: February 24, 2025
In September, Lake Delton, United States experiences a unique blend of summer warmth and early autumn chill. With maximum temperatures soaring up to 33°C (92°F) and an average of 18°C (64°F), visitors can enjoy pleasant days while evenings may bring a refreshingly cool minimum of 1°C (35°F). However, the month also sees significant rainfall, with a total of 104 mm (4.1 in) over 10 days, contributing to a humidity level of 79%. This interplay of warm days and cooler nights, combined with occasional rain, makes September a dynamic and vibrant time to explore the area's natural beauty.
In September, Lake Delton welcomes the early whispers of autumn with refreshing temperatures that showcase a beautiful transition. The average temperature settles around 18°C (64°F), providing a delightful balance between the warmth of summer and the coolness of autumn. Minimums dip to 1°C (35°F), hinting at the coming chill, while maximums can reach up to 33°C (92°F), allowing for those last few sun-soaked days. This month embodies a picturesque scene, as vibrant foliage begins to paint the landscape, making it a perfect time for outdoor activities amid fluctuating temperatures that keep everyone guessing about what's next in Lake Delton's climate journey.
In September, Lake Delton experiences a significant precipitation amount, receiving approximately 104 mm (4.1 in) of rain over 10 days. This rainfall is slightly less than the preceding month of August, which recorded 107 mm (4.2 in), yet it maintains a steady level of moisture vital for the region’s ecosystem. As summer transitions into fall, September’s precipitation contributes to an overall trend of varying rainfall amounts, with peaks typically observed in the spring and early summer months. Notably, the 10 days of rain this month reflect a moderate pattern compared to the 14 days in May, suggesting a gradual decline in rainy days as the seasons shift. This consistent but diminishing rainfall sets the stage for the drier, cooler months ahead.
In September, Lake Delton experiences a slight increase in humidity, averaging around 79%, which is a modest rise compared to the drier months of July and August (78% and 76% respectively). This transitional period signals a shift as summer wanes and autumn approaches, with humidity starting to climb back toward the higher levels seen in the early part of the year. The pattern shows a gradual decrease from the consistent 85% in the winter months of January through April, reaching a low in the summer, before beginning to rise again in the fall. Thus, September serves as a bridge, hinting at the impending return to the more humid conditions typical of the region in October and beyond.
As September rolls in at Lake Delton, the UV Index dips to 7, signaling a transition to a high exposure category with a burn time of 25 minutes. This month reflects a gradual decline from the peak values of 10 during the height of summer, but vigilance is still required to protect your skin from harmful rays. Overall, the UV Index trends show a significant increase from low levels in the winter months, peaking in the summer before tapering off in the fall. As days grow shorter and temperatures cool, it's a reminder that even early autumn sun can be potent. For more detailed information on UV levels throughout the year, check the Lake Delton UV Index.
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September in Lake Delton brings a gentle transition from the sun-soaked days of summer, boasting 263 hours of glorious sunshine. This month serves as a bridge, comfortably nestled between the high points of July and August, which enjoy 357 and 329 hours respectively. The return to gentler light creates a soothing ambiance, perfect for outdoor pursuits and serene lake outings. While the sunshine begins to wane as autumn approaches, September's vibrant sunsets and warm days offer a beautiful farewell to summer, inviting visitors to relish in the last blooms of the season before the crisp embrace of October.
In Lake Delton, United States, September brings a promising 61% chance of sunny weather, marking it as one of the sunniest months of the year. This increase in sunshine is part of a general upward trend from the early months, starting at a low of 24% in January and climbing steadily, with notable jumps during the summer months. Following the peak in August at 58%, September solidifies this sunny momentum, offering residents and visitors alike a wonderful opportunity to enjoy outdoor activities. As the days begin to cool, the consistent warmth and brightness create an inviting atmosphere, making September a prime time to experience the beauty of this charming locale.
As September rolls into Lake Delton, daylight begins to wane, offering 12 hours of sunshine each day. This marks a gradual decline from the balmy 15 hours of June and July, signaling the transition from summer's long, bright days to the shorter daylight of fall. Following the vibrant month of August with its 13 hours of daylight, September serves as a gentle reminder of the approaching cooler months, echoing the patterns of the past year as daylight shrinks toward the 10-hour mark in October and further dips to 9 hours by November. This rhythmic ebb and flow in daylight not only highlights the seasonal shifts, but also invites us to savor the warming hues of autumn as nature prepares for its winter slumber.
As September rolls in at Lake Delton, the average wind speed picks up slightly to 3.2 m/s (7 mph), marking a transition from the calmer summer months. This gentle increase follows a gradual decline from July's 2.8 m/s (6 mph) and August's 2.7 m/s (6 mph), reminiscent of summer's end and the onset of autumn. Trends in wind patterns suggest a shift towards more invigorating breezes as the region prepares for chillier temperatures, evidenced by the sharper increase anticipated in November. With the winds softening in July and August, September offers a refreshing balance, creating a delightful atmosphere for outdoor activities amid the picturesque fall scenery.
The weather in Lake Delton 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 Lake Delton and find detailed weather information for every month.
September and January present a striking contrast in weather conditions. In September, temperatures fluctuate dramatically, ranging from a chilly 1°C (35°F) at night to a warm 33°C (92°F) during the day, with an average of 18°C (64°F). The month also sees an average of 104 mm (4.1 in) of precipitation over about 10 days, combined with high humidity at 79%. In contrast, January is characterized by frigid temperatures, with a minimum of -33°C (-26°F) and a maximum of only 10°C (50°F), averaging -7°C (21°F). Precipitation in January is lower at 45 mm (1.8 in), occurring over just 8 days, while humidity rises to 85%. For more details on winter weather, check out Lake Delton weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a chilly minimum of 1°C (35°F) to a warm maximum of 33°C (92°F), with an average of 18°C (64°F). This month experiences considerable rainfall, totaling 104 mm (4.1 in) over about 10 days, accompanied by a humidity level of 79%. In contrast, February is characterized by much colder temperatures, with a minimum of -33°C (-27°F) and a maximum of 19°C (67°F), averaging -6°C (22°F). Precipitation in February is less, accounting for 53 mm (2.1 in) across 8 days, but humidity is slightly higher at 85%. For more details about February weather, you can check Lake Delton weather in February.
September and March present contrasting weather experiences. In September, temperatures range from a chilly 1°C (35°F) at night to a warm 33°C (92°F) during the day, with an average of 18°C (64°F). This month typically sees 104 mm (4.1 in) of precipitation spread over approximately 10 days, accompanied by relatively high humidity at 79%. In stark contrast, March experiences colder temperatures, starting from a brisk -24°C (-12°F) at its lowest, rising to a maximum of 21°C (69°F) with an average of just 2°C (35°F). The precipitation is notably less at 58 mm (2.3 in) over 9 days, yet humidity remains high at 85%. For specific weather conditions in March, you can check Lake Delton weather in March.
When comparing the weather in September and April, it's evident that September tends to be warmer and more varied. September boasts a minimum temperature of 1°C (35°F) and an average of 18°C (64°F), with highs reaching up to 33°C (92°F). In contrast, April experiences colder conditions, with a minimum of -10°C (15°F) and an average of only 7°C (45°F), peaking at 26°C (80°F). Although both months see substantial precipitation, September has slightly more at 104 mm over 10 days compared to April's 90 mm spread over 12 days. Additionally, September has a humidity level of 79%, while April is more humid at 85%. For more detailed information about April’s weather, you can check out Lake Delton weather in April.
September and May present distinct contrasts in weather conditions. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 33°C (92°F), with an average of 18°C (64°F). The month experiences about 104 mm (4.1 in) of precipitation, spread over approximately 10 days, while humidity hovers around 79%. In comparison, May tends to be slightly cooler, with temperatures ranging from -1°C (30°F) to 34°C (94°F) and an average of 15°C (59°F). Rainfall increases to 126 mm (5.0 in) over about 14 days, accompanied by a similar humidity level of 78%. For more detailed insights into May’s weather, you can refer to Lake Delton weather in May.
When comparing the weather in September and June, we can see several differences and similarities. September enjoys a broader temperature range, with minimums dipping to 1°C (35°F) and maximums reaching up to 33°C (92°F), while June maintains warmer temperatures, with a minimum of 7°C (45°F) and a maximum of 34°C (94°F). Rainfall is fairly consistent, with September experiencing 104 mm (4.1 in) over about 10 days, while June sees slightly more precipitation at 112 mm (4.4 in) over 13 days. Humidity levels are quite similar, with September at 79% and June slightly higher at 80%. For those wanting more details about June weather specifics, you can refer to Lake Delton weather in June.
In comparing the weather between September and July, we see notable differences in temperature and precipitation. September boasts a broader temperature range, with minimums dipping to 1°C (35°F) and maximums soaring to 33°C (92°F), while the average temperature rests at 18°C (64°F). In contrast, July is warmer overall, with minimums around 12°C (54°F) and maximums reaching 34°C (94°F), resulting in a comfortable average temperature of 23°C (74°F). Precipitation levels are relatively close, with September receiving 104 mm (4.1 in) and July slightly less at 91 mm (3.6 in), both experiencing rain on about 10 days. Humidity is slightly higher in September at 79%, compared to 78% in July. For more specific details on July weather patterns, visit Lake Delton weather in July.
In comparing the weather between August and September, September experiences a wider temperature range with a minimum of 1°C (35°F) and an average of 18°C (64°F), while August maintains a milder minimum of 8°C (47°F) and a slightly higher average of 21°C (71°F). Both months reach a maximum temperature of 33°C (91°F) to 33°C (92°F), demonstrating similar peak warmth. However, September receives a bit less precipitation at 104 mm (4.1 in) across 10 days compared to August’s 107 mm (4.2 in) over 12 days, which contributes to September's slightly higher humidity at 79% versus August's 76%. For more details on the specific weather conditions, you can check Lake Delton weather in August.
In September, the weather showcases a warm range with minimum temperatures around 1°C (35°F) and averaging 18°C (64°F), peaking at a hot 33°C (92°F). This month typically experiences 104 mm (4.1 in) of precipitation over about 10 days with humidity at 79%. In contrast, October marks a notable shift in conditions, with minimum temperatures dropping to -5°C (23°F) and a cooler average of 10°C (51°F), while maximum temperatures reach up to 30°C (86°F). This month sees slightly more precipitation at 109 mm (4.3 in) across 13 days, accompanied by a rise in humidity to 83%. For more detailed insights into October weather, you can check Lake Delton weather in October.
September and November present stark contrasts in weather patterns. September enjoys a range of temperatures, with a minimum of 1°C (35°F) and a maximum of 33°C (92°F), boasting an average of 18°C (64°F). This month experiences considerable humidity at 79% and a total precipitation of 104 mm (4.1 in) over about 10 days, making it feel quite warm and sometimes humid. In contrast, November sees much cooler temperatures, with a minimum plunging to -15°C (5°F) and an average of just 2°C (36°F). Although it feels colder, November has less precipitation, totaling 45 mm (1.8 in) over 7 days, and a higher humidity level of 88%. For more details on the conditions, check out Lake Delton weather in November.
September and December present starkly contrasting weather conditions. In September, temperatures can range from a chilly 1°C (35°F) at night to a warm 33°C (92°F) during the day, with an average of 18°C (64°F). This month sees an average of 104 mm (4.1 in) of precipitation over about 10 days and a humidity level of 79%. In contrast, December experiences much colder temperatures, with a minimum of -23°C (-9°F) and an average of -2°C (28°F), reaching a maximum of 18°C (65°F) on warmer days. Precipitation decreases to 45 mm (1.8 in) over just 6 days, and humidity slightly rises to 81%. For more detailed information on December weather, you can check Lake Delton weather in December.
As summer bids farewell, September in Lake Delton unveils a distinctive blend of warmth and moisture that sets it apart from other months. While the days may still bask in pleasant highs, the cooler nights remind residents and visitors alike of the approaching autumn. This month, known for its higher humidity, also sees increased rainfall, making it one of the wetter periods of the year. With an average temperature that straddles the divide between the lingering heat of summer and the crispness of fall, September offers a unique charm that invites exploration of the beautiful surroundings. For an in-depth look at what the weather has in store throughout the year, visit Lake Delton Climate.