April weather forecastHalfmoon, MT
April
Weather in April
April in Halfmoon, Montana, is a chilly spring month, with an average temperature fluctuating between 28°F (-2.2°C) and 46.6°F (8.1°C).Temperature
As April arrives, a rise in the average high-temperature is observed, moving from a wintry 36.1°F (2.3°C) in March to a chilly 46.6°F (8.1°C). Halfmoon temperatures generally rest at a low of 28°F (-2.2°C) during the April nights.Humidity
In April, the average relative humidity is 78%.Rainfall
In April, the rain falls for 15.8 days. Throughout April, 0.98" (25mm) of precipitation is accumulated. In Halfmoon, during the entire year, the rain falls for 126.4 days and collects up to 11.22" (285mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Halfmoon, in April, snow falls for 7.4 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, there are 97 snowfall days, and 33.86" (860mm) of snow is accumulated.Daylight
The average length of the day in April in Halfmoon is 13h and 43min.On the first day of the month, sunrise is at 7:12 am and sunset at 8:08 pm. On the last day of April, sunrise is at 6:17 am and sunset at 8:50 pm MDT.
Sunshine
In Halfmoon, the average sunshine in April is 8.6h.UV index
The average daily maximum UV index in April in Halfmoon is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 2 in April, converts into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Halfmoon, MT
- Average high temperature in April: 46.6°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in April: 28°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in April
Halfmoon, MT
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Halfmoon, MT
- Average wind speed in April: 4.6mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in April
Halfmoon, MT
- Average humidity in April: 78%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in April
Halfmoon, MT
- Average rainfall in April: 0.98"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in April
Halfmoon, MT
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in April
Halfmoon, MT
- Average snowfall in April: 2.09"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Halfmoon, MT
- Average snowfall days in April: 7.4 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Halfmoon, MT
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in April: 8h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in April
Halfmoon, MT
- Average sunshine days in April: 9.8 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in April
Halfmoon, 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, November and December (UV index 1).
Average cloud cover in April
Halfmoon, MT
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in April
Halfmoon, MT
- Average visibility in April: 5mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
