nomadseason

September Weather in Fitzwilliam, United States

Last updated: June 24, 2025

In September, the average temperature in Fitzwilliam, United States hovers around 18°C (64°F). Here, you can expect minimum temperatures dipping to 0°C (33°F) and peaking at a warm 33°C (91°F). With an average precipitation of 83 mm (3.3 in) spread over 8 days, the air carries a humidity level of about 71%.

September Temperature in Fitzwilliam

In September in Fitzwilliam, the average temperature is 18°C (64°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 0°C (33°F). This wide temperature range makes it essential for travelers to pack layers to ensure comfort throughout their stay.

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

The chart illustrates September temperature patterns in Fitzwilliam, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fitzwilliam, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec262834465768737164523930
Data source: Temperature data for Fitzwilliam 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 Fitzwilliam

In Fitzwilliam in September, the precipitation amount reaches 83 mm (3.3 in) over the course of 8 days.

September Precipitation Trends in Fitzwilliam

The chart displays monthly precipitation patterns in Fitzwilliam, 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. In Fitzwilliam, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec74867912484751238483133100117
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Fitzwilliam

In Fitzwilliam in September, humidity is 71%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making traveling a bit sticky but still pleasant as the warmth envelops you, urging you to explore the vibrant surroundings while staying hydrated.

September Average Humidity in Fitzwilliam

This chart illustrates the average monthly humidity levels in Fitzwilliam, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Fitzwilliam is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fitzwilliam

In Fitzwilliam in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Fitzwilliam.

Maximum UV Index Levels in Fitzwilliam for September

The chart shows the monthly maximum UV Index (UVI) for Fitzwilliam 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. In September, the maximum UV index in Fitzwilliam typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Fitzwilliam 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.

How September Weather in Fitzwilliam Compares to Other Months

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

This table compares monthly weather conditions in Fitzwilliam, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)74 mm (2.9 inches)86%moderate
February Weather-2°C (29°F)86 mm (3.4 inches)84%moderate
March Weather1°C (34°F)79 mm (3.1 inches)82%high
April Weather8°C (46°F)124 mm (4.9 inches)80%very high
May Weather14°C (58°F)84 mm (3.3 inches)72%very high
June Weather20°C (68°F)75 mm (3.0 inches)72%very high
July Weather23°C (73°F)123 mm (4.9 inches)67%very high
August Weather22°C (71°F)83 mm (3.3 inches)66%very high
September Weather18°C (64°F)83 mm (3.3 inches)71%high
October Weather11°C (53°F)133 mm (5.3 inches)78%high
November Weather4°C (39°F)100 mm (3.9 inches)84%moderate
December Weather-1°C (30°F)117 mm (4.6 inches)81%low

Compare Fitzwilliam's Climate with Cities Worldwide