Weather in Great Falls

Stay up to date with current weather conditions in Great Falls. In this section, you will find the latest data, detailed forecasts, and visual charts to help you plan your time.

The climate in Great Falls is characterized as continental, with four distinct seasons. The city experiences significant temperature fluctuations throughout the year. Winters here are cold, with average temperatures below zero, especially in January and February, when minimum values can drop to -11°C. Summers, on the other hand, are warm and even hot, with peak temperatures in July and August reaching an average of 22-23°C, and maximums exceeding 30°C.

Spring and autumn are transitional seasons with moderate temperatures. One of the key features of the Great Falls climate is the low level of precipitation throughout the year, indicating rather arid conditions. The highest number of wet days occurs in May, while July is the driest month. Overall, the weather offers variety, from frosty winter days to hot summer ones, with a relatively small amount of rain.

The climate in Great Falls is characterized by pronounced seasonal temperature changes. The annual temperature range is quite wide: from frosty winter months to warm, and sometimes hot, summers. The coldest month is typically February, with an average temperature of around -6.2°C and average minimum values dropping to -11.0°C. January is also cold, with an average temperature of -2.4°C. Conversely, the hottest months are July and August. In July, the average temperature reaches 22.9°C, and the average maximum rises to 30.9°C. August is slightly cooler, with an average temperature of 22.0°C and maximum values around 29.7°C.

The summer months in Great Falls, especially July and August, offer warm and often sunny weather. Daytime temperatures can be quite high, creating conditions for summer heat. However, nights usually bring coolness, as daily temperature fluctuations are quite significant. For example, in July, the difference between the average maximum (30.9°C) and average minimum (14.8°C) temperature is more than 16 degrees. June is also a warm month, with an average temperature of 17.7°C and average maximum values around 24.6°C, making it comfortable for outdoor activities.

Winter in Great Falls is cold, with temperatures consistently staying below zero, especially in January and February. Average minimum temperatures during these months can drop significantly below -5°C, reaching -11.0°C in February. Daytime highs in the middle of winter often remain around or below the freezing point. Transitional seasons, such as March (average temperature 0.4°C) and November (average temperature 2.1°C), show a gradual change in temperatures but can still be quite cool, especially at night. Daily temperature fluctuations are noticeable during these periods as well, which is characteristic of the region's continental climate.

The city of Great Falls experiences a climate with low rainfall throughout the year. There is no distinct rainy season here, but one can distinguish periods with slightly higher precipitation and very dry months.

The driest month in Great Falls is July, when there is practically no precipitation (an average of 0 mm) and there are only about 4 days when it is possible. A slight increase in rainfall, up to 2 mm per month, occurs in late spring and early summer – from April to June. During these months, precipitation falls as rain. May is the month with the highest number of days with precipitation – an average of 12 days, followed by June (10 days) and April (9 days).

In winter, from December to February, as well as in transitional months such as November and March, temperatures often drop below freezing. Therefore, the few precipitations (an average of 1 mm per month) that fall during this time will most likely be in the form of snow. The number of days with precipitation in these cold months varies from 6 (for example, in January and December) to 9 days (in February). Overall, Great Falls is characterized by a low frequency and small amount of precipitation year-round.

When packing for Great Falls, it is important to consider the significant temperature fluctuations throughout the year. The key principle when packing your suitcase should be layering. This will allow you to easily adapt to changing conditions by adding or removing layers of clothing. Regardless of the season, be sure to bring comfortable walking shoes, as you will surely want to explore the city and its surroundings.

In winter (from December to March), it is quite cold in Great Falls; average temperatures often drop below freezing, and in February, they can reach -11°C. You will need warm clothes: thermal underwear, fleece tops, sweaters, an insulated windproof jacket, a hat, gloves, and a scarf. Summer (from June to August), on the other hand, is warm, especially in July and August, when the daytime temperature can rise above 25-30°C. For this time of year, light breathable clothing, T-shirts, and shorts are suitable. However, even in summer, evenings can be cool, so don't forget to take a light jacket or jumper. Sunscreen, sunglasses, and a hat will also be very relevant.

In spring (April-May) and autumn (September-October), the weather in Great Falls is changeable. It can be pleasantly warm during the day, but significantly cooler in the morning and evening. It is recommended to bring clothes that can be easily combined: jeans or thick trousers, long-sleeved shirts, a hoodie, or a mid-season jacket. Although the total amount of precipitation in Great Falls is small (on average 1-2 mm per month), it is worth noting that in some months, for example, in May, there are up to 10-12 days with precipitation. Therefore, a light folding umbrella or a compact waterproof windbreaker may prove useful, especially if you plan long walks.