April weather forecastHarlem, MT
April
Weather in April
April in Harlem, Montana, is a fresh spring month, with an average temperature fluctuating between 35.6°F (2°C) and 52.5°F (11.4°C).Temperature
Harlem's weather shows a temperature rise with the arrival of April, moving from a wintry 38.8°F (3.8°C) in March to a cool 52.5°F (11.4°C). In Harlem, an average low-temperature of 35.6°F (2°C) is recorded during April nights.Humidity
In Harlem, the average relative humidity in April is 60%.Rainfall
In Harlem, in April, during 12.6 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Harlem, during the entire year, the rain falls for 99.1 days and collects up to 10.12" (257mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In April, it is snowing for 5 days. Throughout April, 2.8" (71mm) of snow is accumulated. In Harlem, during the entire year, snow falls for 57.6 days and aggregates up to 21.69" (551mm) of snow.Daylight
In Harlem, the average length of the day in April is 13h and 44min.On the first day of April, sunrise is at 6:51 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:28 pm MDT.
Sunshine
The average sunshine in April is 9.5h.UV index
In Harlem, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In April, an average UV index of 3 transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. To protect against the Sun's most potent rays, avoid direct exposure around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Harlem, MT
- Average high temperature in April: 52.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (26.2°F).
- Average low temperature in April: 35.6°F
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is February (12.6°F).
Average pressure in April
Harlem, MT
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in April
Harlem, MT
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in April
Harlem, MT
- Average humidity in April: 60%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (42%).
Average rainfall in April
Harlem, MT
- Average rainfall in April: 1.02"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are February, March and December (0.55").
Average rainfall days in April
Harlem, MT
- Average rainfall days in April: 12.6 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in April
Harlem, MT
- Average snowfall in April: 2.8"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Harlem, MT
- Average snowfall days in April: 5 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Harlem, MT
- Average daylight in April: 13h and 42min
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 24min).
- Average sunshine in April: 9h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in April
Harlem, MT
- Average sunshine days in April: 12.5 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in April
Harlem, MT
- Average UV index in April: 3
The months with the highest UV index are June and 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
Harlem, MT
- Average cloud cover in April: 38
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in April
Harlem, 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).
