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September Weather in Grimshaw, Canada

Last updated: June 18, 2025

In September, the average temperature in Grimshaw, Canada hovers around 9°C (49°F). However, be prepared for a range of temperatures, with a minimum dipping to -6°C (21°F) and a maximum soaring up to 27°C (81°F). Expect 43 mm (1.7 in) of precipitation across about 9 days, and keep in mind that the average humidity is relatively high at 78%.

September Temperature in Grimshaw

In September in Grimshaw, the average temperature is 9°C (49°F). The maximum can reach 27°C (81°F), and the minimum can be as low as -6°C (21°F). Travelers should be prepared for a wide range of temperatures, making layering clothing essential for comfort during their visit.

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

The chart illustrates September temperature patterns in Grimshaw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grimshaw, September typically has an average temperature of 9°C (49°F), with highs reaching up to 27°C (81°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec10620345259625949362011
Data source: Temperature data for Grimshaw 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 Grimshaw

In Grimshaw in September, the precipitation amount reaches 43 mm (1.7 in) over the course of 9 days.

September Precipitation Trends in Grimshaw

The chart displays monthly precipitation patterns in Grimshaw, 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 Grimshaw, September typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec202223223274934943333322
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grimshaw

In Grimshaw in September, humidity is 78%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling, as the cool air combines with the moisture to create a brisk and invigorating atmosphere.

September Average Humidity in Grimshaw

This chart illustrates the average monthly humidity levels in Grimshaw, 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 Grimshaw is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%94%88%79%71%69%78%76%78%84%87%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grimshaw

In Grimshaw in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Grimshaw.

Maximum UV Index Levels in Grimshaw for September

The chart shows the monthly maximum UV Index (UVI) for Grimshaw 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 Grimshaw typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765311
Data source: Grimshaw 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 Grimshaw Compares to Other Months

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

This table compares monthly weather conditions in Grimshaw, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (10°F)20 mm (0.8 inches)91%low
February Weather-14°C (7°F)22 mm (0.9 inches)94%low
March Weather-7°C (20°F)23 mm (0.9 inches)88%moderate
April Weather1°C (34°F)21 mm (0.8 inches)79%moderate
May Weather11°C (52°F)32 mm (1.3 inches)71%high
June Weather15°C (60°F)74 mm (2.9 inches)69%high
July Weather17°C (62°F)93 mm (3.7 inches)78%high
August Weather15°C (60°F)49 mm (1.9 inches)76%high
September Weather9°C (49°F)43 mm (1.7 inches)78%moderate
October Weather2°C (36°F)32 mm (1.3 inches)84%moderate
November Weather-7°C (20°F)33 mm (1.3 inches)87%low
December Weather-12°C (11°F)22 mm (0.9 inches)93%low

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