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September Weather in Contoocook, United States

Last updated: June 24, 2025

In September, the average temperature in Contoocook, United States hovers around 17°C (64°F). Be prepared for a range of temperatures: it can drop to a chilly 0°C (33°F) or soar to a warm 33°C (92°F). Expect some rain, with an average precipitation of 76 mm (3.0 in) spread over 8 days, and enjoy the moderate humidity level at around 71%.

September Temperature in Contoocook

In September in Contoocook, the average temperature is 17°C (64°F). Maximums can reach 33°C (92°F) and minimums can be as low as 0°C (33°F). Overall, it’s advisable to pack layers to comfortably enjoy the varied temperatures while traveling.

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

The chart illustrates September temperature patterns in Contoocook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Contoocook, September typically has an average temperature of 17°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec242734455767727163523828
Data source: Temperature data for Contoocook 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.

September Precipitation in Contoocook

In Contoocook in September, the precipitation amount is 76 mm (3.0 in) spread over a duration of 8 days.

September Precipitation Trends in Contoocook

The chart displays monthly precipitation patterns in Contoocook, 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 Contoocook, September typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec70837712778851369376130105115
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Contoocook

In Contoocook in September humidity is 71%. With an average temperature of 17°C (64°F), this humidity feels like a warm, enveloping embrace that can make travel feel a bit sticky, yet still pleasant as you explore the sights with a gentle sheen of perspiration.

September Average Humidity in Contoocook

This chart illustrates the average monthly humidity levels in Contoocook, 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 Contoocook 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 Contoocook

In Contoocook 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 Contoocook.

Maximum UV Index Levels in Contoocook for September

The chart shows the monthly maximum UV Index (UVI) for Contoocook 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 Contoocook typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3458910997532
Data source: Contoocook 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 Contoocook Compares to Other Months

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

This table compares monthly weather conditions in Contoocook, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)70 mm (2.8 inches)86%moderate
February Weather-3°C (27°F)83 mm (3.3 inches)84%moderate
March Weather1°C (34°F)77 mm (3.0 inches)82%moderate
April Weather7°C (45°F)127 mm (5.0 inches)80%very high
May Weather14°C (57°F)78 mm (3.1 inches)72%very high
June Weather20°C (68°F)85 mm (3.4 inches)72%very high
July Weather22°C (73°F)136 mm (5.3 inches)67%very high
August Weather21°C (71°F)93 mm (3.7 inches)66%very high
September Weather17°C (64°F)76 mm (3.0 inches)71%high
October Weather11°C (52°F)130 mm (5.1 inches)78%moderate
November Weather3°C (38°F)105 mm (4.1 inches)84%moderate
December Weather-2°C (29°F)115 mm (4.5 inches)81%low

Compare Contoocook's Climate with Cities Worldwide