September Weather in Norfolk, United States

Last updated: February 24, 2025

In September, Norfolk, United States, experiences a dynamic climate characterized by a maximum temperature reaching 35°C (95°F) and an average of 24°C (75°F), making it a month of warmth and variability. Minimum temperatures can drop to 12°C (54°F), offering a refreshing contrast. The region faces moderate precipitation, accumulating 127 mm (5.0 in) across 13 days, while maintaining a humidity level of 78% that enhances the muggy feel of late summer. This blend of heat, moisture, and rain contributes to a vibrant atmosphere, ideal for enjoying the outdoors and the picturesque landscapes of Norfolk.

September Temperature in Norfolk

In September, Norfolk experiences a delightful transition as summer slowly wanes. With minimum temperatures around 12°C (54°F) and an inviting average of 24°C (75°F), the month showcases a perfect balance of warmth and cool breezes. The maximum temperature can climb to 35°C (95°F), keeping the summer spirit alive just a bit longer. As the days grow shorter, this month's weather encourages outdoor adventures, whether it's a stroll in the park or a last-minute beach outing, making it ideal for those who relish the lingering glow of summer before the chill of autumn arrives. Overall, September in Norfolk invites both warmth and comfort, embodying the essence of a season on the brink of change.

September Weather in Norfolk: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Norfolk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424751606876807974665347
Data source: Temperature data for Norfolk generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Norfolk

In September, Norfolk experiences a notable shift in precipitation patterns, recording 127 mm (5.0 in) of rain over 13 days. This moderate rainfall marks a decrease from the peak of 169 mm (6.6 in) in August, but remains above average compared to earlier months. The month serves as a transitional period, bridging the high summer precipitation of July and August with the drier conditions of October. With the onset of fall, September’s rainfall creates a vibrant backdrop for the changing foliage, making it a visually striking time. The consistent precipitation days hint at an active climate, allowing for a rich ecosystem while preparing the region for the cooler, drier months ahead.

September Precipitation Trends in Norfolk

The chart displays monthly precipitation patterns in Norfolk, 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.
JanFebMarAprMayJunJulAugSepOctNovDec90997997121121142169127917889
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Norfolk

As summer fades into fall, September brings a refreshing dip in humidity in Norfolk, United States, dropping to 78%. This decline marks the first significant reduction since the higher humidity levels of spring and summer, where readings hovered around 80% to 82%. The transition is evident as the month progresses, signaling the approaching cooler months ahead. Interestingly, humidity levels tend to rise again as autumn settles in, with October returning to 80%, suggesting a cyclical pattern that characterizes the humidity trends throughout the year. Overall, September's relatively lower humidity offers a brief respite, creating a pleasant atmosphere that prepares Norfolk for the forthcoming seasonal changes.

September Average Humidity in Norfolk

This chart illustrates the average monthly humidity levels in Norfolk, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Norfolk

As summer fades into fall, September in Norfolk sees a UV Index of 9, categorizing the exposure level as very high with a burn time of just 15 minutes. This noticeable shift from the extreme levels of July highlights the gradual decline in solar intensity, yet precautions remain essential. With the UV Index remaining elevated through September, residents and visitors should stay vigilant about sun protection, even as days begin to cool. For more detailed insights and updates on UV levels, explore Norfolk UV Index.

Maximum UV Index Levels in Norfolk for September

The chart shows the monthly maximum UV Index (UVI) for Norfolk 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.
JanFebMarAprMayJunJulAugSepOctNovDec4689101011109853
Data source: Norfolk 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 Norfolk

As summer fades into autumn, September in Norfolk, United States, offers a delightful blend of warmth and sunlight, boasting 288 hours of sunshine. This month marks a gentle decline from the peak of July with its impressive 347 hours, yet still remains luminous, surpassing the earlier months of the year. The steady increase in sunshine hours from January's 167 hours to June's 325 reflects a vibrant ascent toward summer's embrace, while September solidifies the transition as daylight begins to wane. With autumn approaching, the shimmering days of September invite residents and visitors alike to savor the lingering warmth before the cooler months take hold.

Monthly Sunshine Duration in Norfolk: September Highlighted

The September sunshine duration represents the total number of hours Norfolk 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.
JanFebMarAprMayJunJulAugSepOctNovDec167h185h259h289h311h325h347h327h288h260h227h201h
Data source: Norfolk September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Norfolk During September

As September arrives in Norfolk, the likelihood of sunny weather takes a promising turn, boasting a 58% chance of sunshine. This increase is particularly notable compared to the summer months, where June dips to 36%, July at 45%, and August slightly better at 47%. It appears that as the summer fades, the skies tend to clear, paving the way for more pleasant weather. This trend continues into the fall, with October showing a 43% chance of sun and November even rising to 59%. Overall, September stands out as a transitional month, heralding brighter days ahead before the clouds of winter begin to settle in.

Percentage of Sunny Days in September in Norfolk

The chart illustrates the percentage of sunny days in Norfolk 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 Norfolk experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%33%43%55%48%36%45%47%58%43%59%45%
Data source: Norfolk September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Norfolk in September

As the summer warmth begins to wane, September in Norfolk, United States offers a gentle transition towards autumn with approximately 12 hours of daylight. Following the peak of 14 hours in June and July, daylight hours gradually taper off, reflecting nature's elegant rhythm. The shift from August’s 13 hours to September's 12 heralds a subtle yet noticeable decrease in sunlight, preparing residents for the cozy embrace of fall. This gradual reduction continues into October, where daylight dips further to 11 hours, setting the stage for the coming seasonal changes. Embracing this evolving light not only enhances the beauty of Norfolk's landscapes but also invites outdoor enthusiasts to savor the crisp air and vibrant foliage before winter takes its turn.

Average Daylight Hours in Norfolk for September

The chart illustrates the variation in daylight duration in Norfolk throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 56m10h 50m11h 59m13h 9m14h 8m14h 37m14h 21m13h 29m12h 21m11h 11m10h 10m9h 40m
Data source: Norfolk daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Norfolk

As September unfolds in Norfolk, the average wind speed hovers around 3.2 m/s (7 mph), marking a slight uptick from the summer lull experienced in August, where winds dipped to a gentle 2.5 m/s (6 mph). This month typically signifies a transition; the winds tend to strengthen as the region gears up for autumn. Notably, September's breezes are a refreshing change from the calm of July and August, which showcased the weakest winds of the year. Looking ahead, October promises a slight increase in vigor with an average of 3.6 m/s (8 mph), maintaining the trend of gradually strengthening winds as the cooler months approach, ultimately leading into the breezy November, which averages 3.9 m/s (9 mph).

Average September Wind Speed in Norfolk

The chart displays monthly wind speed patterns in Norfolk, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.54.34.03.93.53.13.12.53.2 m/s3.63.93.5
Data source: Norfolk September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Norfolk Compares to Other Months

The weather in Norfolk 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 Norfolk and find detailed weather information for every month.

September and January exhibit stark contrasts in weather. September boasts a warm climate with average temperatures around 24°C (75°F), peaking at 35°C (95°F), making it a month of heat and humidity, with 127 mm (5.0 in) of precipitation over approximately 13 days. In comparison, January experiences much colder temperatures, with averages dropping to 6°C (43°F) and lows plunging to -15°C (5°F). January also sees less precipitation, totaling 90 mm (3.5 in) over just 8 days, coupled with higher humidity at 84%. For more detailed insights, you can check Norfolk weather in January.

September and February present strikingly different weather conditions. In September, temperatures typically range from a minimum of 12°C (54°F) to a maximum of 35°C (95°F), offering an average temperature of 24°C (75°F). This month also sees significant rainfall, with 127 mm (5.0 in) over about 13 days, accompanied by a humidity level of 78%. In contrast, February is much cooler, with temperatures dropping to a minimum of -7°C (20°F) and peaking at 26°C (78°F), resulting in an average of 8°C (47°F). This month experiences less rainfall at 99 mm (3.9 in) over 12 days, with a slightly higher humidity of 83%. The seasonal shift from September to February clearly highlights the transition from warm, humid conditions to a much colder, drier environment. For more detailed information, check out Norfolk weather in February.

When comparing the weather in September and March, it's evident that these months present contrasting climates. September typically enjoys warmer temperatures, with daily averages around 24°C (75°F) and highs reaching up to 35°C (95°F). In contrast, March starts off colder, with average temperatures at 10°C (51°F) and nighttime lows plummeting to -5°C (24°F). Additionally, September experiences heavier rainfall, accumulating approximately 127 mm (5.0 in) over 13 days, while March has lesser precipitation of 79 mm (3.1 in) over 10 days. Humidity levels are fairly high in both months, with September at 78% and March slightly higher at 82%. For more detailed information on the weather patterns specific to March, you can check Norfolk weather in March.

The weather in September tends to be warmer than in April, with average temperatures reaching 24°C (75°F) compared to April's 16°C (60°F). While September can experience highs of up to 35°C (95°F), April's maximum temperature is lower at 31°C (88°F). In terms of precipitation, September sees slightly more rain, averaging 127 mm (5.0 in) over 13 days, whereas April experiences 97 mm (3.8 in) across 11 days. Humidity levels are similar in both months, with September at 78% and April slightly higher at 81%. For more details on the weather conditions in April, check out Norfolk weather in April.

September and May exhibit notable differences in their weather patterns despite similar maximum temperatures. In September, temperatures range from a minimum of 12°C (54°F) to an average of 24°C (75°F), while May is cooler with a minimum of 5°C (41°F) and an average of 20°C (69°F). Both months experience comparable precipitation levels, with September receiving 127 mm (5.0 in) over 13 days and May slightly less at 121 mm (4.7 in) across 11 days. Humidity remains high in both months, with September at 78% and May slightly higher at 80%. For more detailed information, you can check Norfolk weather in May.

In comparing September and June weather, we see that both months have similar average minimum temperatures at 12°C (54°F) and nearly identical average temperatures around 24°C (75°F to 76°F). However, June tends to be slightly warmer with maximum temperatures reaching up to 36°C (97°F), compared to September's high of 35°C (95°F). Both months experience about 13 days of rainfall, but September has a slightly higher total precipitation of 127 mm (5.0 in), compared to June's 121 mm (4.8 in). Humidity levels are also a bit elevated in June at 82%, compared to September's 78%. For more information on specific weather details, you can visit Norfolk weather in June.

When comparing the weather in September to July, notable differences emerge in both temperature and precipitation patterns. September generally experiences a minimum temperature of 12°C (54°F) and an average of 24°C (75°F), with a maximum of 35°C (95°F). In contrast, July tends to be slightly warmer, with minimums around 15°C (59°F), an average of 27°C (81°F), and maximums reaching 37°C (99°F).

In terms of precipitation, September sees approximately 127 mm (5.0 in) over 13 days, while July has a slightly higher rainfall total of 142 mm (5.6 in) across 15 days. Humidity levels are also comparable, with September at 78% and July slightly higher at 81%. For more detailed insights, you can check this link: Norfolk weather in July.

In comparing the weather of September to August, we see a notable decrease in temperature, with September featuring a minimum of 12°C (54°F) and an average of 24°C (75°F), whereas August starts at a higher minimum of 17°C (63°F) and has an average of 26°C (79°F). Even though September's maximum temperature of 35°C (95°F) is slightly lower than August's high of 36°C (97°F), the overall trend shows that September offers a cooler experience. Additionally, September records less precipitation at 127 mm (5.0 in) over 13 days, compared to August's 169 mm (6.6 in) over 19 days, indicating less frequent rain during the former month. Despite a marginally lower humidity in September at 78% versus 81% in August, both months remain relatively humid. For a more detailed review of August's weather, visit Norfolk weather in August.

September and October showcase a marked transition in weather. September enjoys warmer temperatures, with averages around 24°C (75°F) and highs reaching up to 35°C (95°F), while the minimum dips to 12°C (54°F). In contrast, October's temperatures are cooler, averaging 19°C (66°F) and peaking at 34°C (93°F), with the lowest temperatures falling to 4°C (39°F). Additionally, September experiences more rainfall, totaling 127 mm (5.0 in) over 13 days, compared to October's 91 mm (3.6 in) over 9 days. Humidity remains relatively high in both months, with October slightly higher at 80% compared to September's 78%. For more detailed insights into October weather, visit Norfolk weather in October.

September weather is characterized by warm temperatures, with an average of 24°C (75°F) and highs reaching up to 35°C (95°F), making it a much hotter month compared to November. In September, there's notably higher precipitation at 127 mm (5.0 in) over about 13 days, resulting in a humidity level of 78%. In contrast, November brings cooler conditions, with an average temperature of 11°C (53°F) and a maximum of 28°C (82°F). The month experiences lower precipitation at 78 mm (3.1 in) spread over 9 days, alongside a slightly higher humidity level of 84%. For more detailed insights, check out Norfolk weather in November.

In September, the weather is warm and quite humid, with average temperatures hovering around 24°C (75°F) and maximums reaching up to 35°C (95°F). The month experiences considerable precipitation, totaling 127 mm (5.0 in) over 13 days, making it a rather wet period. By contrast, December brings a noticeable chill, with average temperatures dropping to 8°C (47°F) and minimums plunging to -6°C (21°F). While December has less rainfall, at 89 mm (3.5 in) over 9 days, it comes with higher humidity levels at 84%. For a closer look at the weather in December, check out Norfolk weather in December.

Compare Norfolk's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Norfolk

As summer transitions to fall, September in Norfolk offers a blend of warmth and occasional rain, setting it apart from the hotter, drier months of July and August. With average temperatures around a comfortable 24°C (75°F), the days can still reach highs of 35°C (95°F), but the nights cool down significantly, providing much-needed relief. The humidity remains noticeable at 78%, making the air feel warmer, while the month experiences an uptick in precipitation, with about 13 days of rain contributing to a total of 127 mm (5.0 in). This month marks a shift towards more temperate conditions, making it an appealing time to explore the area. For a deeper understanding of what to expect throughout the year, check out Norfolk Climate.