April weather forecastEast Helena, MT
April
Weather in April
April in East Helena, Montana is a transition month with a noticeable increase in daylight hours. Although the last vestiges of winter persist with a snowfall of 5.12" (130mm), they are fading, giving way to spring. Milder temperatures allow the city to show signs of waking up from its long winter slumber. The atmosphere becomes a refreshing mixture of spring and remnants of winter. The changing landscape, between snow-capped peaks and blooming valleys, makes April unique in East Helena.Temperature
The average high-temperature mildly increases in April, edging from an icy 39.7°F (4.3°C) in March to a chilly 47.8°F (8.8°C). East Helena's average low-temperature for the month of April records at a subzero cold 28.8°F (-1.8°C).Humidity
In April, the average relative humidity in East Helena is 69%.Rainfall
In East Helena, Montana, during April, the rain falls for 15.1 days and regularly aggregates up to 1.5" (38mm) of precipitation. In East Helena, during the entire year, the rain falls for 123.7 days and collects up to 12.4" (315mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in East Helena. In East Helena, in April, during 8.8 snowfall days, 5.12" (130mm) of snow is typically accumulated. Throughout the year, there are 80.4 snowfall days, and 34.88" (886mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 37min.On the first day of April, sunrise is at 7:05 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:36 pm MDT.
Sunshine
The average sunshine in April is 9.1h.UV index
In April, the average daily maximum UV index in East Helena is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 2 in April translates into the following instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. 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. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
East Helena, MT
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in April: 28.8°F
The month with the highest average low temperature is July (50.4°F).
The coldest month (with the lowest average low temperature) is December (14.2°F).
Average pressure in April
East Helena, MT
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in April
East Helena, MT
- Average wind speed in April: 6.9mph
The windiest month (with the highest average wind speed) is November (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in April
East Helena, MT
- Average humidity in April: 69%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in April
East Helena, MT
- Average rainfall in April: 1.5"
The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.63").
Average rainfall days in April
East Helena, MT
- Average rainfall days in April: 15.1 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is November (7 days).
Average snowfall in April
East Helena, MT
- Average snowfall in April: 5.12"
The month with the highest snowfall is February (6.18").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
East Helena, MT
- Average snowfall days in April: 8.8 days
The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
East Helena, 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 6min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in April
East Helena, MT
- Average sunshine days in April: 9.8 days
The month with the most sunshine days is July (20.5 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in April
East Helena, MT
- Average UV index in April: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in April
East Helena, MT
- Average cloud cover in April: 40
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in April
East Helena, MT
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
