April weather forecast and climate
Hamilton, MT

A strong suspension bridge over a fast river in Hamilton, Montana, overlooking scenic trees and hilly landscapes over the other side of the shore
A strong suspension bridge over a fast river in Hamilton, Montana, overlooking scenic trees and hilly landscapes over the other side of the shore
April is a chilly spring month in Hamilton, Montana, with average temperature fluctuating between 43.5°F (6.4°C) and 25.9°F (-3.4°C).

Temperature

In Hamilton, the average high-temperature marginally rises, from a cold 36°F (2.2°C) in March, to a chilly 43.5°F (6.4°C). In April, in Hamilton, the average low-temperature is 25.9°F (-3.4°C).

Humidity

In April, the average relative humidity is 79%.

Rainfall

Months with the most rainfall in Hamilton are February and April, with an average 2.36" (60mm) of precipitation.

Snowfall

Months with snowfall in Hamilton are January through May, September through December. In Hamilton, during April, snow falls for 10.3 days and regularly aggregates up to 5.67" (144mm) of snow. Throughout the year, there are 101.1 snowfall days, and 59.17" (1503mm) of snow is accumulated.

Daylight

In April, the average length of the day is 13.6h.

Sunshine

The average sunshine is 8.9h.

UV index

In Hamilton, Montana, the average daily maximum UV index in April is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in April interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 Hamilton?

In Hamilton, Montana, in April, the average high-temperature is 43.5°F (6.4°C), and the average low-temperature is 25.9°F (-3.4°C).

What is the average humidity in April in Hamilton?

In April, the average relative humidity is 79%.

How much does it rain in Hamilton in April?

In April, in Hamilton, Montana, the rain falls for 18.5 days. Throughout April, 2.36" (60mm) of precipitation is accumulated.

What is the rainiest month in Hamilton?

The wettest months in Hamilton, Montana, are February and April, with an average 2.36" (60mm) of rainfall.

How much does it snow in Hamilton in April?

In Hamilton, Montana, in April, during 10.3 snowfall days, 5.67" (144mm) of snow is typically accumulated.

How many hours of daylight does Hamilton have in April?

The average length of the day in April in Hamilton is 13.6h.

How many hours of sunshine does Hamilton have in April?

In April, the average sunshine in Hamilton is 8.9h.

How high is the UV index in April in Hamilton?

In Hamilton, the average daily maximum UV index in April is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.
Average temperature in April - Hamilton, MT
  • Average high temperature in April: 6.4°C

The warmest month (with the highest average high temperature) is July (25°C).
The month with the lowest average high temperature is December (-2.9°C).

  • Average low temperature in April: -3.4°C

The month with the highest average low temperature is August (8.3°C).
The coldest month (with the lowest average low temperature) is December (-10°C).

Average pressure in April - Hamilton, MT
  • Average pressure in April: 1016.1mbar

The month with the highest atmospheric pressure is January (1023mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in April - Hamilton, MT
  • Average wind speed in April: 8.1km/h

The windiest month (with the highest average wind speed) is January (8.6km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).

Average humidity in April - Hamilton, MT
  • Average humidity in April: 79%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).

Average rainfall in April - Hamilton, MT
  • Average rainfall in April: 60mm

The wettest months (with the highest rainfall) are February and April (60mm).
The driest month (with the least rainfall) is August (19mm).

Average rainfall days in April - Hamilton, MT
  • Average rainfall days in April: 18.5 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).

Average snowfall in April - Hamilton, MT
  • Average snowfall in April: 144mm

The month with the highest snowfall is February (331mm).
Months with the least snowfall are June, July and August (0mm).

Average snowfall days in April - Hamilton, MT
  • Average snowfall days in April: 10.3 days

The month with the highest number of snowfall days is February (19.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in April / Average sunshine in April - Hamilton, MT
  • Average daylight in April: 13.6h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in April: 8.9h

Months with the most sunshine are July and August (Average sunshine: 11.7h).
Months with the least sunshine are January and December (Average sunshine: 5.4).

Average sunshine days in April - Hamilton, MT
  • Average sunshine days in April: 6.9 days

The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in April - Hamilton, MT
  • Average UV index in April: 2

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are February and December (UV index 1).

Average visibility in April - Hamilton, MT
  • Average visibility in April: 8km

Months with the highest visibility are July and August (10km).
Months with the lowest visibility are January, February, March and December (7km).