Great Falls
Montana, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Great Falls, MT

A far view from on top of the vast Missouri River of the City of Lights, Great Falls, Montana, a dusk sky, mirror images in the water
A far view from on top of the vast Missouri River of the City of Lights, Great Falls, Montana, a dusk sky, mirror images in the water
April is a moderate spring month in Great Falls, Montana, with average temperature ranging between max 55.6°F (13.1°C) and min 30.6°F (-0.8°C).

Temperature

In April, the average high-temperature increases, from a chilly 45.9°F (7.7°C) in March, to a mild 55.6°F (13.1°C). In Great Falls, in April, the average low-temperature is 30.6°F (-0.8°C).

Rainfall

In Great Falls, in April, it is raining for 9.4 days, with typically 1.4" (36.1mm) of accumulated precipitation. In Great Falls, during the entire year, the rain falls for 99.9 days and collects up to 14.8" (374.8mm) of precipitation.

Snowfall

January through June, August through December are months with snowfall.

Daylight

In Great Falls, the average length of the day in April is 13.7h.

Sunshine

In Great Falls, Montana, the average sunshine is 8.2h.

UV index

In Great Falls, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
The average daily UV index of 5 in April transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Great Falls?

In Great Falls, in April, the average high-temperature is 55.6°F (13.1°C), and the average low-temperature is 30.6°F (-0.8°C).

How much does it rain in Great Falls in April?

In April, in Great Falls, Montana, the rain falls for 9.4 days. Throughout April, 1.4" (36.1mm) of precipitation is accumulated.

How much does it snow in Great Falls in April?

In Great Falls, Montana, in April, during 4.5 snowfall days, 8.6" (218.4mm) of snow is typically accumulated.

How many hours of daylight does Great Falls have in April?

In April, the average length of the day in Great Falls, Montana, is 13.7h.

How long on average sun shines in April in Great Falls?

In Great Falls, the average sunshine in April is 8.2h.

How high is the UV index in April in Great Falls?

In Great Falls, Montana, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in April - Great Falls, MT
  • Average high temperature in April: 55.6°F

The warmest month (with the highest average high temperature) is July (83.4°F).
The month with the lowest average high temperature is December (34.6°F).

  • Average low temperature in April: 30.5°F

The month with the highest average low temperature is July (51.4°F).
Coldest months (with the lowest average low temperature) are January and December (14.9°F).

Average rainfall in April - Great Falls, MT
  • Average rainfall in April: 1.4"

The wettest month (with the highest rainfall) is June (2.5").
Driest months (with the lowest rainfall) are January and February (0.5").

Average rainfall days in April - Great Falls, MT
  • Average rainfall days in April: 9.4 days

Months with the highest number of rainy days are May and June (11.7 days).
The month with the lowest number of rainy days is October (6.6 days).

Average snowfall in April - Great Falls, MT
  • Average snowfall in April: 8.6"

The month with the highest snowfall is March (11.9").
The month with the lowest snowfall is July (0").

Average snowfall days in April - Great Falls, MT
  • Average snowfall days in April: 4.5 days

The month with the highest number of snowfall days is March (7.8 days).
The month with the lowest number of snowfall days is July (0 days).

Average daylight in April / Average sunshine in April - Great Falls, MT
  • Average daylight in April: 13.7h

The month with the longest days is June (Average daylight: 15.9h).
The month with shortest days is December (Average daylight: 8.5h).

  • Average sunshine in April: 8.2h

The month with most sunshine is July (Average sunshine: 12.2h).
The month with least sunshine is December (Average sunshine: 3.4h).

Average UV index in April - Great Falls, MT
  • Average UV index in April: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).