nomadseason

July Weather in Great Falls, United States

Last updated: June 24, 2025

In July, the average temperature in Great Falls, United States hovers around 23°C (73°F), making it a pleasantly warm time of year. However, be prepared for a range in temperatures: it can dip as low as 6°C (44°F) or soar up to a blistering 37°C (100°F). With an average humidity level of 77%, you'll want to stay hydrated! Expect about 12 mm (0.5 in) of precipitation spread over 4 days, so a light rain jacket might come in handy during your visits.

July Temperature in Great Falls

In July in Great Falls, the average temperature is 23°C (73°F), with maximums reaching 37°C (100°F) and minimums dipping as low as 6°C (44°F). This diverse temperature range makes it essential to pack both lightweight clothing and warmer layers for your travels.

July Weather in Great Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Great Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Great Falls, July typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (100°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec271934425464737059453729
Data source: Temperature data for Great Falls 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.

July Precipitation in Great Falls

In Great Falls in July, the precipitation amount is 12 mm (0.5 in) over a span of 4 days.

July Precipitation Trends in Great Falls

The chart displays monthly precipitation patterns in Great Falls, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Great Falls, July typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec164125606571122336383228
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

July Humidity in Great Falls

In Great Falls in July, humidity is 77%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable but bearable. It's essential to stay hydrated and take frequent breaks to enjoy the sights while avoiding overheating.

July Average Humidity in Great Falls

This chart illustrates the average monthly humidity levels in Great Falls, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Great Falls is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Great Falls

In Great Falls in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Great Falls.

Maximum UV Index Levels in Great Falls for July

The chart shows the monthly maximum UV Index (UVI) for Great Falls in July, 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 July, the maximum UV index in Great Falls typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Great Falls July 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 July Weather in Great Falls Compares to Other Months

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

This table compares monthly weather conditions in Great Falls, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)16 mm (0.6 inches)87%low
February Weather-7°C (20°F)41 mm (1.6 inches)88%moderate
March Weather1°C (34°F)25 mm (1.0 inches)83%moderate
April Weather6°C (43°F)60 mm (2.4 inches)78%high
May Weather12°C (55°F)65 mm (2.5 inches)76%very high
June Weather18°C (64°F)71 mm (2.8 inches)78%very high
July Weather23°C (73°F)12 mm (0.5 inches)77%very high
August Weather21°C (70°F)23 mm (0.9 inches)71%very high
September Weather15°C (60°F)36 mm (1.4 inches)68%high
October Weather7°C (45°F)38 mm (1.5 inches)72%moderate
November Weather3°C (37°F)32 mm (1.3 inches)84%moderate
December Weather-2°C (29°F)27 mm (1.1 inches)90%low

Compare Great Falls's Climate with Cities Worldwide