April weather forecast
Hamilton, MT

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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

Weather in April

April brings subtler shifts in weather conditions in Hamilton, with a steady increase in temperatures and decreasing snowfall. Signifying the full arrival of spring, the snowfall drops drastically from 9.09" (231mm) in March to 5.67" (144mm) in April. This change accompanies increased daylight hours and a relative decrease in humidity, thus paving the way for clearer skies and warmer days. April, being a transition month, presents a constantly altering panorama of weather, with increased rainfall. Despite being a wet month, the increasing temperatures and extended hours of daylight make it comfortable for outdoor activities.

Temperature

As Hamilton enters April, the average high-temperature marginally increases from the a cold 36°F (2.2°C) of March to a frosty 43.5°F (6.4°C). The temperature dips to an average of 25.9°F (-3.4°C) during April nights.

Humidity

In Hamilton, the average relative humidity in April is 79%.

Rainfall

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

Snowfall

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

Daylight

In Hamilton, the average length of the day in April is 13h and 36min.
On the first day of the month, sunrise is at 7:14 am and sunset at 8:06 pm. On the last day of April, sunrise is at 6:22 am and sunset at 8:44 pm MDT.

Sunshine

The average sunshine in April in Hamilton, Montana, is 8.9h.

UV index

In Hamilton, the average daily maximum UV index in April is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 2 during April leads to these instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

Is it cold in Hamilton during April?

The high-temperature, in April, in Hamilton, is 43.5°F (6.4°C), while the low-temperature averages to 25.9°F (-3.4°C).

What is the average humidity in April in Hamilton?

The average relative humidity in April is 79%.

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 rain in Hamilton in April?

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

How many days does it snow in April in Hamilton?

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

What is the average length of the day in April in Hamilton?

The average day length in April in Hamilton, Montana, is 13h and 36min.

When is the sunrise / sunset in April in Hamilton?

In April, on the first day of the month, sunrise is at 7:14 am and sunset at 8:06 pm. On the last day of the month, in Hamilton, sunrise is at 6:22 am and sunset at 8:44 pm MDT.

How long on average sun shines in April in Hamilton?

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

How high is the UV index in April in Hamilton?

The average daily maximum UV index in April is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hamilton, MT

Average temperature in April - Hamilton, MT
  • Average high temperature in April: 43.5°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).

  • Average low temperature in April: 25.9°F

The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).

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Average pressure in April
Hamilton, MT

Average pressure in April - Hamilton, MT
  • Average pressure in April: 30.01"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in April
Hamilton, MT

Average wind speed in April - Hamilton, MT
  • Average wind speed in April: 5mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

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Average humidity in April
Hamilton, MT

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%).

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Average rainfall in April
Hamilton, MT

Average rainfall in April - Hamilton, MT
  • Average rainfall in April: 2.36"

The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").

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Average rainfall days in April
Hamilton, MT

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).

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Average snowfall in April
Hamilton, MT

Average snowfall in April - Hamilton, MT
  • Average snowfall in April: 5.67"

The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Hamilton, MT

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).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in April /
Average sunshine in April
Hamilton, MT

Average daylight in April / Average sunshine in April - Hamilton, MT
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in April: 8h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days in April
Hamilton, MT

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).

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Average UV index in April
Hamilton, MT

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).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in April
Hamilton, MT

Average cloud cover in April - Hamilton, MT
  • Average cloud cover in April: 43

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in April
Hamilton, MT

Average visibility in April - Hamilton, MT
  • Average visibility in April: 5mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Hamilton, Montana, USA

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