April Weather in Great Falls

Last updated: March 2, 2024

The weather in Great Falls, United States, during April is characterized by an average temperature of 18°C (64°F). Highs can soar to 30°C (86°F), while lows may dip to 3°C (37°F). Typically, the humidity level in Great Falls throughout April hovers around 82%.

3°C (37°F)

Minimum temperature

18°C (64°F)

Average temperature

30°C (86°F)

Maximum temperature

82%

Humidity

Precipitation and Sunshine hours

In April, Great Falls averages 101 mm (4.0 inches) of rainfall, typically over the course of 8 rainy days. The month enjoys an average of 13 hours 4 minutes of daylight, with the sun shining for approximately 9 hours 20 minutes each day. Additionally, there is a 56% probability of sunny days during this period.

101 mm (4.0 inches)

Precipitation

8 rainy days

Rainy days

9 hours 20 minutes

Sunshine hours

56%

Chance of sun

UV Index

In April, the UV Index in Great Falls reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	1	1	2	4	7	9	10	9	8	5	3	2	1
Exposure	Low			Moderate	High	VeryHigh				Moderate		Low
Time to burn	45 min			30 min	25 min	15 min				30 min		45 min