Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The arrival of April in Longmont signals a slight increase in the average high-temperature, moving from a cool 51.4°F (10.8°C) in March to a refreshing 57.7°F (14.3°C). Longmont reports a considerable drop from daytime temperatures in April, recording an average nighttime figure of 34.3°F (1.3°C).Humidity
The average relative humidity in April in Longmont, Colorado, is 53%.Rainfall
In April, the rain falls for 10.7 days. Throughout April, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 105.4 rainfall days, and 10.43" (265mm) of precipitation is accumulated.Snowfall
Months with snowfall in Longmont are January through May, October through December. In Longmont, during April, snow falls for 3.3 days and regularly aggregates up to 4.29" (109mm) of snow. Throughout the year, there are 37.1 snowfall days, and 26.73" (679mm) of snow is accumulated.Daylight
In April, the average length of the day in Longmont is 13h and 18min.On the first day of April in Longmont, Colorado, sunrise is at 6:42 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:54 pm MDT.
Sunshine
The average sunshine in April in Longmont, Colorado, is 10.7h.UV index
The average daily maximum UV index in April in Longmont is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 during April translates into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Longmont in April?
What is the average humidity in April in Longmont?
How many days does it rain in April in Longmont?
How much does it snow in Longmont in April?
What is the average length of the day in April in Longmont?
What time are sunrise and sunset in April in Longmont?
How many hours of sunshine does Longmont have in April?
What is the UV index intensity in April in Longmont?
Average temperature in April
Longmont, CO
- Average high temperature in April: 57.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (39°F).
- Average low temperature in April: 34.3°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (19.9°F).
Average pressure in April
Longmont, CO
- Average pressure in April: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in April
Longmont, CO
- Average wind speed in April: 6.6mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.6mph).
Average humidity in April
Longmont, CO
- Average humidity in April: 53%
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is August (42%).
Average rainfall in April
Longmont, CO
- Average rainfall in April: 1.14"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in April
Longmont, CO
- Average rainfall days in April: 10.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in April
Longmont, CO
- Average snowfall in April: 4.29"
The month with the highest snowfall is November (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Longmont, CO
- Average snowfall days in April: 3.3 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Longmont, CO
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 10h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in April
Longmont, CO
- Average sunshine days in April: 15.3 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in April
Longmont, CO
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Longmont, CO
- Average cloud cover in April: 26
The months with the most cloud cover are April and May (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in April
Longmont, CO
- 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).
Longmont, Colorado, USA
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