April weather forecastLewistown, MT
April
Weather in April
April greets Lewistown with a transition from early spring to a more mature version of the season. Notably, there’s an abrupt upward trend in the city’s downpour, recording 2.36" (60mm) as gusty winds pave the way for heavy rainstorms. The lengthening daylight hours and mellow sunshine create an inviting atmosphere despite the occasional showers. Relative humidity decreases compared to March, lending to a drier climate. The higher visibility ensures scenic views of the city's blossoming flora.Temperature
The shift from March to April introduces a subtle increase in the average high-temperature, moving from a wintry 40.6°F (4.8°C) to a chilly 47.8°F (8.8°C). Throughout April, Lewistown anticipates an average low-temperature of 31.8°F (-0.1°C).Humidity
The average relative humidity in April is 68%.Rainfall
In Lewistown, in April, it is raining for 14.8 days, with typically 2.36" (60mm) of accumulated precipitation. In Lewistown, during the entire year, the rain falls for 126.2 days and collects up to 17.83" (453mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. April is the month with the most snowfall. Snow falls for 10 days and accumulates 9.13" (232mm) of snow.Daylight
The average length of the day in April is 13h and 38min.On the first day of April, sunrise is at 6:54 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:27 pm MDT.
Sunshine
In April, the average sunshine is 9h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In April, a regular UV index of 2 translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Lewistown, MT
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in April: 31.8°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in April
Lewistown, MT
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in April
Lewistown, MT
- Average wind speed in April: 9.9mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in April
Lewistown, MT
- Average humidity in April: 68%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in April
Lewistown, MT
- Average rainfall in April: 2.36"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in April
Lewistown, MT
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in April
Lewistown, MT
- Average snowfall in April: 9.13"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in April
Lewistown, MT
- Average snowfall days in April: 10 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Lewistown, MT
- Average daylight in April: 13h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in April: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in April
Lewistown, MT
- Average sunshine days in April: 8.3 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in April
Lewistown, MT
- Average UV index in April: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in April
Lewistown, MT
- Average cloud cover in April: 42
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in April
Lewistown, MT
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
