April weather forecastWilliamsport, TN
April
Weather in April
April in Williamsport, Tennessee, is a pleasant spring month, with an average temperature varying between 49.8°F (9.9°C) and 68.9°F (20.5°C).Temperature
Williamsport's transition into April sees a rise in the average high-temperature, advancing from a refreshing 59.2°F (15.1°C) in March to an agreeable 68.9°F (20.5°C). Williamsport's April nights cool down to an average low-temperature of 49.8°F (9.9°C).Humidity
In Williamsport, the average relative humidity in April is 76%.Rainfall
In Williamsport, during April, the rain falls for 13.8 days and regularly aggregates up to 3.82" (97mm) of precipitation. In Williamsport, during the entire year, the rain falls for 172.4 days and collects up to 38.43" (976mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.3 snowfall days, in April, Williamsport aggregates 0.08" (2mm) of snow. Throughout the year, there are 8.9 snowfall days, and 2.8" (71mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 7min.On the first day of April in Williamsport, sunrise is at 6:34 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 7:35 pm CDT.
Sunshine
The average sunshine in April is 8.8h.UV index
In April, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 5 during April morphs into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Williamsport, TN
- Average high temperature in April: 68.9°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.3°F).
- Average low temperature in April: 49.8°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in April
Williamsport, TN
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in April
Williamsport, TN
- Average wind speed in April: 8.1mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in April
Williamsport, TN
- Average humidity in April: 76%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in April
Williamsport, TN
- Average rainfall in April: 3.82"
The wettest months (with the highest rainfall) are February and July (4.06").
The driest month (with the least rainfall) is September (2.36").
Average rainfall days in April
Williamsport, TN
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in April
Williamsport, TN
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Williamsport, TN
- Average snowfall days in April: 0.3 days
The months with the highest number of snowfall days are January and February (2.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Williamsport, TN
- Average daylight in April: 13h and 6min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in April: 8h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in April
Williamsport, TN
- Average sunshine days in April: 14.6 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in April
Williamsport, TN
- Average UV index in April: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in April
Williamsport, TN
- Average cloud cover in April: 39
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in April
Williamsport, TN
- 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).
