Relative Humidity in April at US Cities

The average humidity in April is listed here for the largest cities in the United States. The tables below give this month's daily averages along with morning and afternoon relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

For each city, the Daily number gives the average of humidity readings taken every three hours throughout the day. Morning values are recorded between 4 and 6 am local standard time, when usually temperatures are coolest and humidity highest. Afternoon humidity percentages are readings taken between 3 and 5 pm local standard time, when normally the day's temperature peaks and relative humidity reaches its lowest point. All the figures are averages for the years 1961 to 1990.

Average Relative Humidity (%) in April
Daily	City	Morning	Afternoon
61	Atlanta, Georgia	75	44
66	Austin, Texas	82	49
59	Baltimore, Maryland	71	46
65	Birmingham, Alabama	83	46
63	Boston, Massachusetts	71	56
68	Buffalo, New York	77	57
59	Charlotte, North Carolina	75	43
65	Chicago, Illinois	77	53
63	Cincinnati, Ohio	74	50
66	Cleveland, Ohio	76	56
63	Columbus, Ohio	74	50
65	Dallas, Texas	82	50
50	Denver, Colorado	67	35
66	Detroit, Michigan	77	53
57	Fresno, California	74	35
67	Grand Rapids, Michigan	77	55
58	Hartford, Connecticut	73	44
67	Honolulu, Hawaii	73	56
73	Houston, Texas	89	54

Daily	City	Morning	Afternoon
66	Indianapolis, Indiana	77	53
70	Jacksonville, Florida	88	49
63	Kansas City, Missouri	77	50
25	Las Vegas, Nevada	35	16
71	Los Angeles, California	80	64
62	Louisville, Kentucky	73	48
63	Memphis, Tennessee	77	49
67	Miami, Florida	79	55
69	Milwaukee, Wisconsin	78	59
60	Minneapolis, Minnesota	74	48
63	Nashville, Tennessee	80	47
73	New Orleans, Louisiana	88	57
55	New York, New York	64	45
61	Oklahoma City, Oklahoma	77	45
67	Orlando, Florida	87	45
60	Philadelphia, Pennsylvania	73	48
28	Phoenix, Arizona	43	16
60	Pittsburgh, Pennsylvania	71	48

Daily	City	Morning	Afternoon
72	Portland, Oregon	85	55
61	Providence, Rhode Island	73	50
62	Raleigh, North Carolina	79	42
61	Richmond, Virginia	78	42
67	Rochester, New York	79	55
65	Sacramento, California	82	43
53	Salt Lake City, Utah	66	39
66	San Antonio, Texas	83	49
67	San Diego, California	75	59
71	San Francisco, California	81	59
71	Seattle, Washington	83	57
64	St. Louis, Missouri	78	49
69	Tampa, Florida	86	50
27	Tucson, Arizona	37	15
61	Tulsa, Oklahoma	78	52
63	Virginia Beach, Virginia	74	50
58	Washington, DC	70	45

Average Relative Humidity in April at US Cities

Reference

More US City Weather Information