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November Weather in Riverhead, United States

Last updated: June 24, 2025

In November, the average temperature in Riverhead, United States hovers around 9°C (49°F). Expect a range from a chilly -6°C (21°F) to a pleasant 21°C (70°F). During this time, precipitation typically reaches 100 mm (3.9 in) over 9 days, paired with an average humidity of 82%.

November Temperature in Riverhead

In November in Riverhead, the average temperature is 9°C (49°F). The maximum can reach 21°C (70°F), and the minimum can be as low as -6°C (21°F). It's advisable to pack layers to accommodate the fluctuating temperatures during your travels.

November Weather in Riverhead: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Riverhead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverhead, November typically has an average temperature of 9°C (49°F), with highs reaching up to 21°C (70°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec353640485768757569614941
Data source: Temperature data for Riverhead 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.

November Precipitation in Riverhead

In Riverhead in November, the precipitation amount is 100 mm (3.9 in) spread over 9 days.

November Precipitation Trends in Riverhead

The chart displays monthly precipitation patterns in Riverhead, with values for each month alongside November’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November’s conditions compare to those of other months. In Riverhead, November typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec79106101126114761179689139100137
Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.
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November Humidity in Riverhead

In Riverhead in November, humidity is 82%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and prompting travelers to seek warmth indoors or in cozy cafes.

November Average Humidity in Riverhead

This chart illustrates the average monthly humidity levels in Riverhead, with November’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In November, average humidity in Riverhead is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Riverhead

In Riverhead in November, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Riverhead for better planning.

Maximum UV Index Levels in Riverhead for November

The chart shows the monthly maximum UV Index (UVI) for Riverhead in November, 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. In November, the maximum UV index in Riverhead typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Riverhead November 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.

How November Weather in Riverhead Compares to Other Months

Weather in Riverhead varies notably across the year, with each month offering distinct climate conditions. This page compares November’s weather to other months in Riverhead, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Riverhead, showing how November’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)79 mm (3.1 inches)84%moderate
February Weather2°C (37°F)106 mm (4.2 inches)82%moderate
March Weather4°C (40°F)101 mm (4.0 inches)81%high
April Weather9°C (49°F)126 mm (5.0 inches)78%very high
May Weather14°C (58°F)114 mm (4.5 inches)69%very high
June Weather20°C (68°F)76 mm (3.0 inches)69%very high
July Weather24°C (75°F)117 mm (4.6 inches)62%very high
August Weather24°C (75°F)96 mm (3.8 inches)65%very high
September Weather21°C (70°F)89 mm (3.5 inches)68%very high
October Weather16°C (61°F)139 mm (5.5 inches)74%high
November Weather9°C (49°F)100 mm (3.9 inches)82%moderate
December Weather5°C (41°F)137 mm (5.4 inches)80%low

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