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The relative humidity is expressed as a percentage measure of the amount of moisture in the air compared to the maximum amount of moisture the air can hold at the same temperature and pressure. Average humidity values are given for selected morning and afternoon observations. Maximum relative humidity values usually occur during morning hours. Here, the Local Standard Time (LST) of morning(M morning 7 A.M.) and afternoon(A afternoon 1 P.M.) humidity values are shown below:
Alabama | Florida | Georgia | North Carolina
South Carolina | Virginia | Puerto Rico
| Alabama | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| BIRMINGHAM AP, AL | 44 | 44 | 79 | 65 | 77 | 62 | 77 | 59 | 81 | 59 | 85 | 62 | 83 | 61 | 85 | 64 | 85 | 63 | 86 | 64 | 86 | 61 | 82 | 62 | 80 | 65 | 83 | 63 |
| HUNTSVILLE, AL | 40 | 40 | 81 | 69 | 79 | 65 | 78 | 62 | 81 | 59 | 85 | 63 | 87 | 64 | 90 | 67 | 90 | 66 | 88 | 66 | 86 | 63 | 83 | 65 | 81 | 68 | 85 | 65 |
| MOBILE, AL | 45 | 45 | 82 | 66 | 82 | 63 | 84 | 62 | 87 | 61 | 87 | 62 | 88 | 63 | 89 | 67 | 90 | 68 | 88 | 66 | 86 | 61 | 85 | 64 | 83 | 67 | 86 | 65 |
| MONTGOMERY, AL | 44 | 44 | 81 | 66 | 80 | 62 | 80 | 60 | 84 | 60 | 87 | 62 | 87 | 63 | 90 | 67 | 90 | 66 | 88 | 64 | 88 | 62 | 86 | 63 | 83 | 66 | 86 | 64 |
| Florida | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| APALACHICOLA, FL | 42 | 42 | 85 | 66 | 86 | 65 | 86 | 65 | 86 | 64 | 85 | 65 | 85 | 67 | 86 | 71 | 88 | 75 | 88 | 69 | 86 | 62 | 85 | 63 | 86 | 67 | 67 | 66 |
| DAYTONA BEACH, FL | 61 | 61 | 88 | 59 | 87 | 57 | 87 | 56 | 86 | 53 | 85 | 57 | 87 | 63 | 89 | 64 | 91 | 67 | 90 | 67 | 87 | 63 | 88 | 60 | 88 | 61 | 88 | 61 |
| FORT MYERS, FL | 61 | 61 | 89 | 57 | 89 | 55 | 89 | 52 | 88 | 48 | 88 | 50 | 89 | 58 | 89 | 60 | 91 | 61 | 92 | 61 | 90 | 57 | 90 | 56 | 89 | 57 | 89 | 56 |
| GAINESVILLE, FL | 22 | 22 | 89 | 59 | 89 | 56 | 91 | 53 | 90 | 49 | 91 | 50 | 89 | 57 | 89 | 60 | 91 | 61 | 95 | 64 | 93 | 61 | 93 | 59 | 91 | 60 | 91 | 57 |
| JACKSONVILLE, FL | 69 | 69 | 88 | 58 | 87 | 54 | 87 | 50 | 87 | 48 | 86 | 51 | 88 | 57 | 89 | 59 | 92 | 61 | 92 | 63 | 91 | 59 | 90 | 57 | 89 | 59 | 89 | 56 |
| KEY WEST, FL | 57 | 57 | 82 | 69 | 81 | 67 | 80 | 66 | 77 | 64 | 77 | 66 | 78 | 69 | 77 | 67 | 78 | 67 | 81 | 70 | 82 | 69 | 83 | 69 | 83 | 70 | 80 | 68 |
| MIAMI, FL | 41 | 41 | 85 | 60 | 84 | 58 | 82 | 57 | 79 | 54 | 80 | 59 | 84 | 66 | 83 | 63 | 85 | 65 | 87 | 67 | 86 | 63 | 84 | 62 | 84 | 60 | 83 | 61 |
| ORLANDO, FL | 42 | 42 | 88 | 57 | 88 | 53 | 89 | 51 | 88 | 47 | 88 | 50 | 90 | 58 | 91 | 59 | 93 | 60 | 92 | 61 | 90 | 57 | 90 | 56 | 89 | 58 | 90 | 56 |
| PENSACOLA, FL | 42 | 42 | 82 | 66 | 82 | 63 | 84 | 63 | 86 | 62 | 87 | 63 | 85 | 63 | 86 | 67 | 88 | 68 | 85 | 64 | 82 | 59 | 82 | 62 | 81 | 66 | 84 | 64 |
| TALLAHASSEE, FL | 44 | 44 | 87 | 57 | 87 | 54 | 89 | 51 | 91 | 47 | 90 | 50 | 91 | 56 | 93 | 61 | 94 | 61 | 93 | 58 | 91 | 53 | 90 | 54 | 88 | 57 | 90 | 55 |
| TAMPA, FL | 42 | 42 | 87 | 60 | 86 | 57 | 87 | 56 | 86 | 52 | 85 | 53 | 86 | 61 | 87 | 64 | 90 | 65 | 91 | 63 | 89 | 58 | 88 | 58 | 87 | 60 | 87 | 59 |
| VERO BEACH, FL | 42 | 42 | 88 | 60 | 88 | 56 | 86 | 56 | 84 | 55 | 84 | 58 | 81 | 60 | 83 | 60 | 85 | 60 | 82 | 59 | 81 | 59 | 79 | 57 | 82 | 56 | 84 | 58 |
| WEST PALM BEACH, FL | 41 | 41 | 84 | 59 | 84 | 57 | 83 | 56 | 79 | 55 | 80 | 59 | 84 | 66 | 85 | 64 | 86 | 65 | 87 | 66 | 84 | 63 | 83 | 61 | 84 | 60 | 84 | 61 |
| Georgia | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| ATHENS, GA | 50 | 50 | 80 | 57 | 80 | 54 | 81 | 52 | 83 | 50 | 86 | 54 | 88 | 56 | 90 | 58 | 92 | 59 | 91 | 59 | 90 | 55 | 85 | 54 | 82 | 57 | 86 | 56 |
| ATLANTA, GA | 45 | 45 | 78 | 59 | 77 | 55 | 78 | 52 | 79 | 50 | 82 | 54 | 84 | 57 | 88 | 59 | 89 | 60 | 87 | 59 | 84 | 54 | 82 | 56 | 80 | 59 | 82 | 56 |
| AUGUSTA,GA | 41 | 41 | 84 | 54 | 83 | 50 | 85 | 48 | 87 | 46 | 87 | 49 | 87 | 53 | 89 | 55 | 92 | 57 | 92 | 55 | 91 | 51 | 89 | 50 | 85 | 52 | 88 | 52 |
| COLUMBUS, GA | 60 | 60 | 83 | 59 | 83 | 54 | 84 | 51 | 85 | 48 | 85 | 50 | 86 | 53 | 89 | 57 | 90 | 56 | 89 | 56 | 88 | 52 | 87 | 54 | 84 | 57 | 86 | 54 |
| MACON, GA | 41 | 41 | 84 | 57 | 84 | 54 | 86 | 52 | 87 | 48 | 88 | 50 | 88 | 54 | 90 | 57 | 93 | 57 | 93 | 57 | 90 | 52 | 88 | 52 | 85 | 56 | 88 | 54 |
| SAVANNAH, GA | 41 | 41 | 83 | 55 | 82 | 51 | 84 | 49 | 85 | 46 | 86 | 51 | 88 | 56 | 90 | 58 | 92 | 61 | 91 | 60 | 89 | 55 | 87 | 53 | 84 | 55 | 87 | 54 |
| North Carolina | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| ASHEVILLE, NC | 41 | 41 | 84 | 59 | 83 | 55 | 84 | 53 | 85 | 50 | 91 | 56 | 94 | 60 | 95 | 62 | 97 | 62 | 96 | 62 | 93 | 56 | 88 | 56 | 85 | 58 | 90 | 57 |
| CAPE HATTERAS, NC | 48 | 48 | 79 | 67 | 80 | 66 | 80 | 63 | 78 | 61 | 81 | 66 | 83 | 68 | 85 | 70 | 86 | 70 | 84 | 68 | 82 | 65 | 81 | 65 | 80 | 67 | 82 | 66 |
| CHARLOTTE, NC | 45 | 45 | 78 | 55 | 76 | 52 | 78 | 50 | 78 | 47 | 82 | 52 | 84 | 55 | 87 | 57 | 89 | 58 | 89 | 57 | 87 | 53 | 83 | 53 | 79 | 55 | 82 | 54 |
| GREENSBORO-WNSTN-SALM-HGHPT, NC | 42 | 42 | 78 | 56 | 76 | 52 | 77 | 50 | 77 | 48 | 83 | 55 | 84 | 56 | 87 | 59 | 90 | 60 | 90 | 59 | 88 | 55 | 82 | 53 | 79 | 55 | 83 | 55 |
| RALEIGH, NC | 41 | 41 | 79 | 55 | 78 | 52 | 80 | 50 | 81 | 46 | 85 | 54 | 87 | 56 | 89 | 58 | 92 | 59 | 92 | 59 | 90 | 54 | 85 | 52 | 81 | 54 | 85 | 54 |
| WILMINGTON, NC | 42 | 42 | 80 | 56 | 80 | 53 | 82 | 52 | 81 | 49 | 84 | 55 | 85 | 60 | 87 | 63 | 90 | 64 | 90 | 62 | 89 | 56 | 86 | 53 | 82 | 55 | 85 | 57 |
| South Carolina | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| CHARLESTON AP,SC | 63 | 63 | 83 | 55 | 82 | 53 | 83 | 50 | 84 | 49 | 85 | 53 | 86 | 59 | 88 | 62 | 90 | 63 | 90 | 62 | 89 | 56 | 87 | 53 | 84 | 55 | 86 | 56 |
| COLUMBIA, SC | 39 | 39 | 82 | 54 | 82 | 49 | 84 | 48 | 83 | 44 | 85 | 48 | 87 | 52 | 88 | 54 | 91 | 56 | 91 | 55 | 90 | 51 | 89 | 51 | 84 | 53 | 86 | 51 |
| GREENVILLE-SPARTANBURG AP, SC | 43 | 43 | 77 | 55 | 76 | 51 | 76 | 50 | 78 | 48 | 83 | 53 | 85 | 55 | 87 | 57 | 89 | 58 | 89 | 58 | 86 | 53 | 82 | 53 | 79 | 55 | 82 | 54 |
| Virginia | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| LYNCHBURG, VA | 42 | 42 | 73 | 53 | 73 | 50 | 73 | 49 | 73 | 45 | 81 | 53 | 84 | 55 | 86 | 57 | 86 | 56 | 89 | 57 | 86 | 52 | 80 | 52 | 76 | 54 | 80 | 53 |
| NORFOLK, VA | 57 | 57 | 75 | 59 | 75 | 57 | 75 | 55 | 74 | 51 | 78 | 57 | 79 | 58 | 82 | 59 | 84 | 62 | 84 | 61 | 83 | 59 | 79 | 56 | 76 | 59 | 79 | 58 |
| RICHMOND, VA | 71 | 71 | 80 | 57 | 79 | 53 | 78 | 50 | 76 | 46 | 80 | 51 | 82 | 54 | 85 | 56 | 89 | 57 | 90 | 56 | 89 | 53 | 84 | 51 | 81 | 55 | 83 | 53 |
| ROANOKE, VA | 41 | 41 | 70 | 53 | 70 | 50 | 71 | 48 | 71 | 47 | 79 | 53 | 82 | 54 | 83 | 55 | 87 | 56 | 88 | 56 | 83 | 52 | 76 | 52 | 72 | 54 | 78 | 53 |
| WALLOPS ISLAND, VA | 24 | 24 | 77 | 63 | 76 | 62 | 77 | 61 | 77 | 58 | 79 | 64 | 82 | 64 | 84 | 65 | 86 | 66 | 85 | 64 | 84 | 60 | 81 | 61 | 77 | 62 | 80 | 63 |
| WASHINGTON DULLES AP, D.C. | 36 | 36 | 77 | 58 | 78 | 54 | 78 | 52 | 77 | 49 | 83 | 55 | 84 | 56 | 86 | 55 | 88 | 55 | 89 | 56 | 89 | 54 | 82 | 54 | 79 | 57 | 82 | 55 |
| WASHINGTON NAT'L AP, D.C. | 45 | 45 | 71 | 56 | 71 | 53 | 70 | 50 | 70 | 49 | 75 | 53 | 76 | 54 | 77 | 54 | 80 | 55 | 82 | 56 | 80 | 54 | 76 | 54 | 72 | 56 | 75 | 54 |
| Puerto Rico | Years | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | Annual | ||||||||||||||
| M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | M | A | |
| SAN JUAN, PR | 50 | 50 | 82 | 65 | 80 | 63 | 77 | 61 | 76 | 62 | 78 | 66 | 77 | 65 | 79 | 67 | 80 | 67 | 79 | 67 | 80 | 67 | 81 | 68 | 82 | 67 | 79 | 65 |