Relative Humidity in March at US Cities

The average humidity in March 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 March
Daily	City	Morning	Afternoon
62	Atlanta, Georgia	74	47
64	Austin, Texas	80	48
59	Baltimore, Maryland	68	47
64	Birmingham, Alabama	79	47
63	Boston, Massachusetts	69	56
73	Buffalo, New York	79	65
62	Charlotte, North Carolina	74	46
70	Chicago, Illinois	79	59
67	Cincinnati, Ohio	75	55
70	Cleveland, Ohio	76	62
65	Columbus, Ohio	72	54
64	Dallas, Texas	79	49
54	Denver, Colorado	68	40
70	Detroit, Michigan	78	59
69	Fresno, California	81	45
71	Grand Rapids, Michigan	80	61
60	Hartford, Connecticut	70	49
69	Honolulu, Hawaii	76	58
73	Houston, Texas	87	54

Daily	City	Morning	Afternoon
70	Indianapolis, Indiana	78	58
71	Jacksonville, Florida	87	51
67	Kansas City, Missouri	78	54
33	Las Vegas, Nevada	44	21
71	Los Angeles, California	78	65
64	Louisville, Kentucky	73	52
63	Memphis, Tennessee	75	51
70	Miami, Florida	81	57
71	Milwaukee, Wisconsin	79	64
67	Minneapolis, Minnesota	76	58
65	Nashville, Tennessee	79	50
73	New Orleans, Louisiana	85	58
59	New York, New York	64	50
61	Oklahoma City, Oklahoma	75	46
70	Orlando, Florida	88	48
62	Philadelphia, Pennsylvania	71	50
39	Phoenix, Arizona	56	24
64	Pittsburgh, Pennsylvania	72	54

Daily	City	Morning	Afternoon
75	Portland, Oregon	85	59
63	Providence, Rhode Island	72	53
63	Raleigh, North Carolina	77	46
63	Richmond, Virginia	76	46
71	Rochester, New York	78	62
72	Sacramento, California	85	53
60	Salt Lake City, Utah	70	47
63	San Antonio, Texas	79	46
67	San Diego, California	75	59
73	San Francisco, California	81	63
74	Seattle, Washington	82	61
68	St. Louis, Missouri	81	54
72	Tampa, Florida	86	53
37	Tucson, Arizona	47	21
62	Tulsa, Oklahoma	76	53
65	Virginia Beach, Virginia	74	53
59	Washington, DC	68	47

Average Relative Humidity in March at US Cities

Reference

More US City Weather Information