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 brings a change in Jefferson's weather, with average high-temperatures moving from March's frosty 46°F (7.8°C) to a moderate 58.5°F (14.7°C). During April, the average low-temperature is recorded at a cold 42.1°F (5.6°C).Humidity
In April, the average relative humidity is 70%.Rainfall
In Jefferson, in April, it is raining for 14.7 days, with typically 2.76" (70mm) of accumulated precipitation. In Jefferson, Iowa, during the entire year, the rain falls for 125.7 days and collects up to 26.5" (673mm) of precipitation.Snowfall
Months with snowfall in Jefferson are January through May, October through December. In Jefferson, in April, during 1.7 snowfall days, 1.26" (32mm) of snow is typically accumulated. Throughout the year, there are 38.1 snowfall days, and 15.31" (389mm) of snow is accumulated.Daylight
In Jefferson, the average length of the day in April is 13h and 23min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:43 pm. On the last day of April, sunrise is at 6:13 am and sunset at 8:15 pm CDT.
Sunshine
The average sunshine in April is 7.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 in April converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What are the temperatures in Jefferson in April?
What is the average humidity in April in Jefferson?
How much does it rain in Jefferson in April?
How much does it snow in Jefferson in April?
What is the average length of the day in April in Jefferson?
When is the sunrise / sunset in April in Jefferson?
How long on average sun shines in April in Jefferson?
How high is the UV index in April in Jefferson?
Average temperature in April
Jefferson, IA
- Average high temperature in April: 58.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in April: 42.1°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in April
Jefferson, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Jefferson, IA
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in April
Jefferson, IA
- Average humidity in April: 70%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in April
Jefferson, IA
- Average rainfall in April: 2.76"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in April
Jefferson, IA
- Average rainfall days in April: 14.7 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in April
Jefferson, IA
- Average snowfall in April: 1.26"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Jefferson, IA
- Average snowfall days in April: 1.7 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Jefferson, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Jefferson, IA
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in April
Jefferson, IA
- 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, October, November and December (UV index 2).
Average cloud cover in April
Jefferson, IA
- Average cloud cover in April: 46
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in April
Jefferson, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Jefferson, Iowa, USA
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