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September Weather in Grants, United States

Last updated: June 24, 2025

In September, the average temperature in Grants, United States hovers around 17°C (64°F). Visitors can expect a temperature range from a chilly 0°C (33°F) to a warm 32°C (90°F). During this period, the area typically receives 35 mm (1.4 in) of precipitation over 4 days, contributing to a comfortable average humidity of 62%.

September Temperature in Grants

In September in Grants, the average temperature is 17°C (64°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as 0°C (33°F). Be prepared for a wide range of temperatures during your visit, so pack accordingly!

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

The chart illustrates September temperature patterns in Grants, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grants, September typically has an average temperature of 17°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec283341505969716963514131
Data source: Temperature data for Grants 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 Grants

In Grants in September, the precipitation amount is 35 mm (1.4 in) over a span of 4 days.

September Precipitation Trends in Grants

The chart displays monthly precipitation patterns in Grants, 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 Grants, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec232330201815703635241417
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grants

In Grants in September humidity is 62%. With an average temperature of 17°C (64°F), this humidity feels like a refreshing embrace, making for pleasant travel conditions that invigorate the senses while encouraging leisurely strolls and outdoor exploration.

September Average Humidity in Grants

This chart illustrates the average monthly humidity levels in Grants, 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 Grants is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%83%71%61%48%36%37%46%62%74%82%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grants

In Grants in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Grants.

Maximum UV Index Levels in Grants for September

The chart shows the monthly maximum UV Index (UVI) for Grants 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 Grants typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111213131211864
Data source: Grants 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 Grants Compares to Other Months

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

This table compares monthly weather conditions in Grants, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)23 mm (0.9 inches)81%moderate
February Weather0°C (33°F)22 mm (0.9 inches)83%high
March Weather5°C (42°F)29 mm (1.2 inches)71%very high
April Weather10°C (50°F)20 mm (0.8 inches)61%extreme
May Weather15°C (59°F)18 mm (0.7 inches)48%extreme
June Weather21°C (70°F)15 mm (0.6 inches)36%extreme
July Weather21°C (71°F)70 mm (2.8 inches)37%extreme
August Weather20°C (69°F)36 mm (1.4 inches)46%extreme
September Weather17°C (64°F)35 mm (1.4 inches)62%extreme
October Weather10°C (51°F)24 mm (0.9 inches)74%very high
November Weather5°C (41°F)14 mm (0.5 inches)82%high
December Weather-1°C (31°F)17 mm (0.7 inches)82%moderate

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