When is the best time to go to Great Falls
The chart above shows the best time of year to visit Great Falls, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Great Falls
Great Falls weather by month
Please note our recommendations for when to visit Great Falls are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| -1°C | 20mm | 4.5hrs | 10.1hrs |
The climate in Great Falls during January can be summarized as cold and dry.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
January is in the winter in Great Falls and is typically the coldest month of the year. Daytime maximum temperatures average around a freezing -2°C (29°F), whilst at night -12°C (10°F) is normal.
On average January is the driest month of the year in Great Falls with around 20mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.5 hours of sunshine per day.
Great Falls weather in January »
February
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 3°C | 14mm | 5.9hrs | 11.4hrs |
February in Great Falls is generally dry with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often not a good and not conducive to spending time outdoors.
February is in the winter in Great Falls and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a freezing 3°C (38°F), whilst at night -8°C (17°F) is normal.
On average February is the 2nd driest month of the year in Great Falls with around 14mm 0.6 inches of rain making it a dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
Great Falls weather in February »
March
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 5°C | 23mm | 8.1hrs | 12.9hrs |
The weather in March in Great Falls is characteristically cold and dry.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
March is in the spring in Great Falls and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing 6°C (42°F), whilst at night -6°C (21°F) is normal.
On average March is the 3rd driest month of the year in Great Falls with around 23mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.1 hours of sunshine per day.
Great Falls weather in March »
April
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 11°C | 31mm | 8.8hrs | 14.7hrs |
Great Falls's weather in April is typically cool and reasonably dry in nature.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
April is in the spring in Great Falls and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 13°C (55°F), whilst at night -0°C (31°F) is normal.
On average April is the 4th driest month of the year in Great Falls with around 31mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.8 hours of sunshine per day.
Great Falls weather in April »
May
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 16°C | 63mm | 10hrs | 16.2hrs |
May is a reasonably dry month in Great Falls and the temperature is generally mild.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often not a good and not conducive to spending time outdoors.
May is in the spring in Great Falls and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 18°C (64°F), whilst at night 5°C (40°F) is normal.
On average May is the 5th driest month of the year in Great Falls with around 63mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 10 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 21°C | 71mm | 11.4hrs | 10.1hrs |
Mild and reasonably dry weather often prevails in Great Falls during the month of June
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Great Falls.
June is in the summer in Great Falls and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a comfortable 23°C (74°F), whilst at night 9°C (48°F) is normal.
On average June is the 6th driest month of the year in Great Falls with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.4 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 25°C | 34mm | 13.1hrs | 11.4hrs |
July in Great Falls is generally reasonably dry with the temperature being warm.
It is perhaps the perfect month to visit Great Falls, with some surprisingly good weather at this time of year.
July is in the summer in Great Falls and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (83°F), whilst at night 12°C (53°F) is normal.
On average July is the 6th wettest month of the year in Great Falls with around 34mm 1.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 13.1 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 25°C | 36mm | 11.5hrs | 12.9hrs |
The weather in August in Great Falls is characteristically warm and reasonably dry.
It is perhaps the perfect month to visit Great Falls, with some extremely good weather at this time of year.
August is in the summer in Great Falls and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 11°C (52°F) is normal.
On average August is the 5th wettest month of the year in Great Falls with around 36mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 11.5 hours of sunshine per day.
Great Falls weather in August »
September
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 19°C | 26mm | 9.1hrs | 14.7hrs |
Great Falls's weather in September is typically mild and dry in nature.
It is perhaps the perfect month to visit Great Falls, with some surprisingly good weather at this time of year.
September is in the fall / autumn in Great Falls and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 6°C (43°F) is normal.
On average September is the 4th wettest month of the year in Great Falls with around 26mm 1 inches of rain making it a dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
Great Falls weather in September »
October
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 14°C | 19mm | 7.1hrs | 16.2hrs |
October is a dry month in Great Falls and the temperature is generally cool.
It is perhaps a good month to visit Great Falls, with some very good weather at this time of year.
October is in the fall / autumn in Great Falls and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 15°C (60°F), whilst at night 2°C (36°F) is normal.
On average October is the 3rd wettest month of the year in Great Falls with around 19mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
Great Falls weather in October »
November
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 6°C | 16mm | 4.7hrs | 10.1hrs |
The weather in November in Great Falls is characteristically cool and dry.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
November is in the fall / autumn in Great Falls and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night -5°C (24°F) is normal.
On average November is the 2nd wettest month of the year in Great Falls with around 16mm 0.6 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.7 hours of sunshine per day.
Great Falls weather in November »
December
| Temp | Rain | Sunshine | Day length |
|---|---|---|---|
| 0°C | 18mm | 3.9hrs | 11.4hrs |
December in Great Falls is generally dry with the temperature being cold.
Based on weather alone, this is probably a time of year to avoid going to Great Falls for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
December is in the winter in Great Falls and is typically the warmest month of the year. Daytime maximum temperatures average around a freezing 0°C (33°F), whilst at night -10°C (14°F) is normal.
On average December is the wettest month of the year in Great Falls with around 18mm 0.7 inches of rain making it a dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.9 hours of sunshine per day.
Other monthly averages
Great Falls weather stats
| Hottest month: | July | 27.8°C 82°F |
|---|---|---|
| Driest month: | February | 14mm 0.6ins |
| Sunniest month: | July | 13.1hrs |
| Coldest month: | January | -1.7°C 28.9°F |
| Wettest month: | June | 71mm 2.8ins |
| Warmest sea: | August | 14°C 57.2°F |
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