April weather forecastWilliamsburg, IA
April
Weather in April
April in Williamsburg, Iowa, is a refreshing spring month, with an average temperature ranging between min 41.5°F (5.3°C) and max 58.6°F (14.8°C).Temperature
April sees a temperature increase, moving from a chilly 46°F (7.8°C) in March to a refreshing 58.6°F (14.8°C). Throughout April, the temperature falls to an average low of 41.5°F (5.3°C).Humidity
The average relative humidity in April in Williamsburg is 74%.Rainfall
In April, the rain falls for 15.2 days. Throughout April, 3.11" (79mm) of precipitation is accumulated. Throughout the year, in Williamsburg, there are 142 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
Months with snowfall in Williamsburg are January through May, October through December. In Williamsburg, Iowa, during April, snow falls for 1.3 days and regularly aggregates up to 0.63" (16mm) of snow. In Williamsburg, during the entire year, snow falls for 35.1 days and aggregates up to 15.43" (392mm) of snow.Daylight
In Williamsburg, the average length of the day in April is 13h and 22min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:33 pm. On the last day of April, in Williamsburg, sunrise is at 6:04 am and sunset at 8:05 pm CDT.
Sunshine
The average sunshine in April in Williamsburg is 7.7h.UV index
The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 4 during April morphs into the following directions:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Williamsburg, IA
- Average high temperature in April: 58.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in April: 41.5°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in April
Williamsburg, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Williamsburg, IA
- Average wind speed in April: 10.7mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in April
Williamsburg, IA
- Average humidity in April: 74%
The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Williamsburg, IA
- Average rainfall in April: 3.11"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in April
Williamsburg, IA
- Average rainfall days in April: 15.2 days
The months with the highest number of rainy days are May and June (18.5 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in April
Williamsburg, IA
- Average snowfall in April: 0.63"
The month with the highest snowfall is January (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Williamsburg, IA
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Williamsburg, IA
- Average daylight in April: 13h and 24min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Williamsburg, IA
- Average sunshine days in April: 12.1 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in April
Williamsburg, IA
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Williamsburg, IA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in April
Williamsburg, IA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
