ANNUAL CLIMATOLOGICAL SUMMARY 2009
NAME: Charleston CITY: STATE:
ELEV: LAT: LONG:
TEMPERATURE ¡F HEAT BASE 65.0 COOL BASE 65.0
| YR | MO | MEAN MAX | MEAN MIN | MEAN | DEP FROM NORM | HEAT DEG DAYS | COOL DEG DAYS | HI | HI DATE | LOW | LOW DATE | MAX >= 90 | MAX <= 32 | MIN <= 32 | MIN <= 0 |
| 9 | 1 | 37.0 | -2.6 | 22.9 | 0.0 | 1312.7 | 0.0 | 48.2 | 22.0 | -9.6 | 15.0 | 0.0 | 15.0 | 31.0 | 2.0 |
| 9 | 2 | 57.7 | 10.3 | 34.5 | 0.0 | 839.0 | 0.0 | 64.3 | 9.0 | 4.3 | 3.0 | 0.0 | 6.0 | 21.0 | 0.0 |
| 9 | 3 | 65.6 | 20.4 | 46.8 | 0.0 | 558.8 | 3.5 | 76.8 | 6.0 | 9.9 | 3.0 | 0.0 | 2.0 | 12.0 | 0.0 |
| 9 | 4 | 75.3 | 35.0 | 54.3 | 0.0 | 359.4 | 45.4 | 85.3 | 26.0 | 31.0 | 7.0 | 0.0 | 0.0 | 3.0 | 0.0 |
| 9 | 5 | 76.5 | 53.5 | 65.5 | 0.0 | 83.2 | 90.6 | 93.4 | 22.0 | 40.6 | 17.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 9 | 6 | 86.2 | 60.2 | 75.9 | 0.0 | 8.7 | 368.9 | 101.2 | 22.0 | 48.0 | 5.0 | 13.0 | 0.0 | 0.0 | 0.0 |
| 9 | 7 | 73.3 | 66.6 | 69.4 | 0.0 | 0.0 | 16.3 | 86.3 | 3.0 | 59.2 | 3.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 9 | 8 |
| 9 | 9 |
| 9 | 10 |
| 9 | 11 |
| 9 | 12 |
| AVG | | 67.3 | 34.8 | 52.8 | 0.0 | 3161.8 | 524.6 | 101.2 | JUN | -9.6 | JAN | 14.0 | 23.0 | 67.0 | 2.0 |
PRECIPITATION in| YR | MO | TOTAL | DEP FROM NORM | MAX OBS DAY | DATE | .01 | .1 | 1 |
| 9 | 1 | 0.52 | 0.0 | 0.15 | 9.0 | 5.0 | 2.0 | 0.0 |
| 9 | 2 | 1.12 | 0.0 | 0.61 | 11.0 | 3.0 | 3.0 | 0.0 |
| 9 | 3 | 2.36 | 0.0 | 0.64 | 10.0 | 9.0 | 5.0 | 0.0 |
| 9 | 4 | 5.53 | 0.0 | 1.16 | 2.0 | 14.0 | 11.0 | 1.0 |
| 9 | 5 | 4.51 | 0.0 | 0.83 | 8.0 | 14.0 | 9.0 | 0.0 |
| 9 | 6 | 5.39 | 0.0 | 1.6 | 10.0 | 10.0 | 8.0 | 1.0 |
| 9 | 7 | 0.18 | 0.0 | 0.18 | 4.0 | 1.0 | 1.0 | 0.0 |
| 9 | 8 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 9 | 9 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 9 | 10 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 9 | 11 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 9 | 12 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| AVG | | 19.61 | 0.0 | 1.6 | JUN | 56.0 | 39.0 | 2.0 |
WIND SPEED MPH| YR | MO | AVG | HI | DATE | DOM DIR |
| 9 | 1 | 4.9 | 32.0 | 9.0 | SSW |
| 9 | 2 | 5.7 | 40.0 | 11.0 | NW |
| 9 | 3 | 5.4 | 97.0 | 28.0 | SSW |
| 9 | 4 | 4.9 | 35.0 | 27.0 | SSW |
| 9 | 5 | 1.6 | 33.0 | 14.0 | NW |
| 9 | 6 | 1.9 | 36.0 | 18.0 | NE |
| 9 | 7 | 0.2 | 17.0 | 1.0 | NW |
| 9 | 8 | 0.0 | 0.0 | 0.0 | ------- |
| 9 | 9 | 0.0 | 0.0 | 0.0 | ------- |
| 9 | 10 | 0.0 | 0.0 | 0.0 | ------- |
| 9 | 11 | 0.0 | 0.0 | 0.0 | ------- |
| 9 | 12 | 0.0 | 0.0 | 0.0 | ------- |
| AVG | | 2.1 | 97.0 | MAR | SSW |