April weather forecast and climate
Washington, DC US

• Average high temperature in April: 19.2°C

The warmest month (with the highest average high temperature) is July (31.3°C).
The month with the lowest average high temperature is January (6.3°C).

• Average low temperature in April: 8.3°C

The month with the highest average low temperature is July (21.7°C).
The coldest month (with the lowest average low temperature) is January (-1.9°C).

• Average humidity in April: 58%

The month with the highest relative humidity is September (69.7%).
The month with the lowest relative humidity is April (58%).

• Average rainfall in April: 77.7mm

The wettest month (with the highest rainfall) is May (101.3mm).
The driest month (with the lowest rainfall) is February (66.5mm).

• Average rainfall days in April: 10.4 days

The month with the highest number of rainy days is May (11.1 days).
The month with the lowest number of rainy days is October (7.7 days).

• Average snowfall in April: 0mm

The month with the highest snowfall is February (144.8mm).
Months with the lowest snowfall are April, May, June, July, August, September and October (0mm).

• Average snowfall days in April: 0.1 days

The month with the highest number of snowfall days is January (3 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

• Average daylight in April: 13.3h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

• Average sunshine in April: 7.6h

The month with most sunshine is June (Average sunshine: 9.4h).
The month with least sunshine is December (Average sunshine: 4.3h).

• Average UV index in April: 7

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).