April weather forecastJefferson, CO
April
Weather in April
April in Jefferson, Colorado, is a cold spring month, with an average temperature ranging between max 33.6°F (0.9°C) and min 13.5°F (-10.3°C).Temperature
The transition into April shows a subtle variation to a cold 33.6°F (0.9°C) from March's 28.8°F (-1.8°C) in the average high-temperature. Jefferson records a consistent low-temperature of 13.5°F (-10.3°C) during April nights.Humidity
In Jefferson, the average relative humidity in April is 84%.Rainfall
In April, in Jefferson, the rain falls for 6.7 days. Throughout April, 2.48" (63mm) of precipitation is accumulated. Throughout the year, there are 110.4 rainfall days, and 24.09" (612mm) of precipitation is accumulated.Snowfall
Months with snowfall in Jefferson are January through December. In April, it is snowing for 22.8 days. Throughout April, 19.41" (493mm) of snow is accumulated. In Jefferson, during the entire year, snow falls for 158 days and aggregates up to 118.82" (3018mm) of snow.Daylight
The average length of the day in April is 13h and 16min.On the first day of April, sunrise is at 6:46 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:56 pm MDT.
Sunshine
In Jefferson, the average sunshine in April is 8.3h.UV index
In Jefferson, the average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 2 suggests these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Jefferson, CO
- Average high temperature in April: 33.6°F
The warmest month (with the highest average high temperature) is July (65.8°F).
The month with the lowest average high temperature is December (21.2°F).
- Average low temperature in April: 13.5°F
The month with the highest average low temperature is July (40.1°F).
The coldest months (with the lowest average low temperature) are January and December (0.7°F).
Average pressure in April
Jefferson, CO
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are April and May (29.94"Hg).
Average wind speed in April
Jefferson, CO
- Average wind speed in April: 6.3mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in April
Jefferson, CO
- Average humidity in April: 84%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (54%).
Average rainfall in April
Jefferson, CO
- Average rainfall in April: 2.48"
The wettest month (with the highest rainfall) is July (3.35").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days in April
Jefferson, CO
- Average rainfall days in April: 6.7 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (2.8 days).
Average snowfall in April
Jefferson, CO
- Average snowfall in April: 19.41"
The month with the highest snowfall is May (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in April
Jefferson, CO
- Average snowfall days in April: 22.8 days
The month with the highest number of snowfall days is April (22.8 days).
The month with the least snowfall days is July (1.3 days).
Average daylight in April /
Average sunshine in April
Jefferson, CO
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 8h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in April
Jefferson, CO
- Average sunshine days in April: 6 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (5.8 days).
Average UV index in April
Jefferson, CO
- Average UV index in April: 2
The months with the highest UV index are May, June, July and August (UV index 3).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in April
Jefferson, CO
- Average cloud cover in April: 47
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility in April
Jefferson, CO
- Average visibility in April: 4mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
