April weather forecastSweet Grass, MT
April
Weather in April
April in Sweet Grass, Montana, is a frosty spring month, with an average temperature fluctuating between 49.6°F (9.8°C) and 34°F (1.1°C).Temperature
With the arrival of April, the average high-temperature transitions from a wintry 39°F (3.9°C) in March to a frosty 49.6°F (9.8°C). Throughout April, an average nighttime temperature of 34°F (1.1°C) is experienced.Humidity
In April, the average relative humidity is 62%.Rainfall
In Sweet Grass, in April, it is raining for 8.3 days, with typically 0.94" (24mm) of accumulated precipitation. In Sweet Grass, Montana, during the entire year, the rain falls for 70.4 days and collects up to 8.46" (215mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Sweet Grass, Montana, in April, during 5 snowfall days, 2.44" (62mm) of snow is typically accumulated. In Sweet Grass, during the entire year, snow falls for 54.3 days and aggregates up to 19.49" (495mm) of snow.Daylight
In Sweet Grass, the average length of the day in April is 13h and 46min.On the first day of April, sunrise is at 7:03 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 8:43 pm MDT.
Sunshine
In April, the average sunshine is 9.3h.UV index
In Sweet Grass, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 3 in April leads to these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Sweet Grass, MT
- Average high temperature in April: 49.6°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in April: 34°F
The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).
Average pressure in April
Sweet Grass, MT
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in April
Sweet Grass, MT
- Average wind speed in April: 11.2mph
The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).
Average humidity in April
Sweet Grass, MT
- Average humidity in April: 62%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).
Average rainfall in April
Sweet Grass, MT
- Average rainfall in April: 0.94"
The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in April
Sweet Grass, MT
- Average rainfall days in April: 8.3 days
The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).
Average snowfall in April
Sweet Grass, MT
- Average snowfall in April: 2.44"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Sweet Grass, MT
- Average snowfall days in April: 5 days
The month with the highest number of snowfall days is December (10.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Sweet Grass, MT
- Average daylight in April: 13h and 48min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in April: 9h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in April
Sweet Grass, MT
- Average sunshine days in April: 17.4 days
The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).
Average UV index in April
Sweet Grass, MT
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in April
Sweet Grass, MT
- Average cloud cover in April: 37
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in April
Sweet Grass, 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).
