ANNUAL CLIMATOLOGICAL SUMMARY 2011
NAME: Charleston CITY: STATE:
ELEV: LAT: 39¡ 30' 0" N LONG: 88¡ 6' 0" W
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 |
| 11 | 1 | 37.5 | 4.1 | 26.3 | 0.0 | 1071.1 | 0.0 | 42.9 | 3.0 | -2.6 | 21.0 | 0.0 | 19.0 | 26.0 | 1.0 |
| 11 | 2 | 60.8 | 8.1 | 36.4 | 0.0 | 721.5 | 0.0 | 65.6 | 16.0 | 0.3 | 10.0 | 0.0 | 6.0 | 10.0 | 0.0 |
| 11 | 3 | 76.6 | 35.2 | 49.4 | 0.0 | 514.2 | 16.6 | 80.9 | 21.0 | 31.0 | 27.0 | 0.0 | 1.0 | 4.0 | 0.0 |
| 11 | 4 | 80.8 | 46.8 | 64.8 | 0.0 | 123.3 | 65.7 | 84.7 | 10.0 | 40.2 | 5.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 11 | 5 | 89.4 | 53.5 | 71.1 | 0.0 | 32.8 | 97.3 | 92.9 | 11.0 | 47.0 | 4.0 | 2.0 | 0.0 | 0.0 | 0.0 |
| 11 | 6 | 92.5 | 70.4 | 84.4 | 0.0 | 0.0 | 248.7 | 98.5 | 27.0 | 67.6 | 24.0 | 6.0 | 0.0 | 0.0 | 0.0 |
| 11 | 7 | 104.1 | 80.5 | 93.2 | 0.0 | 0.0 | 860.8 | 108.8 | 30.0 | 76.3 | 13.0 | 26.0 | 0.0 | 0.0 | 0.0 |
| 11 | 8 | 104.8 | 80.2 | 89.2 | 0.0 | 0.0 | 644.0 | 111.3 | 7.0 | 70.4 | 23.0 | 19.0 | 0.0 | 0.0 | 0.0 |
| 11 | 9 |
| 11 | 10 |
| 11 | 11 |
| 11 | 12 |
| AVG | | 80.8 | 47.3 | 64.3 | 0.0 | 2462.9 | 1933.1 | 111.3 | AUG | -2.6 | JAN | 53.0 | 26.0 | 40.0 | 1.0 |
PRECIPITATION in| YR | MO | TOTAL | DEP FROM NORM | MAX OBS DAY | DATE | .01 | .1 | 1 |
| 11 | 1 | 0.13 | 0.0 | 0.06 | 24.0 | 2.0 | 0.0 | 0.0 |
| 11 | 2 | 0.8 | 0.0 | 0.22 | 12.0 | 9.0 | 2.0 | 0.0 |
| 11 | 3 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 11 | 4 | 0.01 | 0.0 | 0.01 | 28.0 | 0.0 | 0.0 | 0.0 |
| 11 | 5 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 11 | 6 | 0.01 | 0.0 | 0.01 | 19.0 | 0.0 | 0.0 | 0.0 |
| 11 | 7 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 11 | 8 | 0.04 | 0.0 | 0.04 | 10.0 | 1.0 | 0.0 | 0.0 |
| 11 | 9 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 11 | 10 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 11 | 11 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| 11 | 12 | 0.0 | 0.0 | 0.0 | 1.0 | 0.0 | 0.0 | 0.0 |
| AVG | | 0.99 | 0.0 | 0.22 | FEB | 12.0 | 2.0 | 0.0 |
WIND SPEED MPH| YR | MO | AVG | HI | DATE | DOM DIR |
| 11 | 1 | 1.2 | 22.0 | 1.0 | SSW |
| 11 | 2 | 1.4 | 39.0 | 17.0 | SSW |
| 11 | 3 | 1.6 | 36.0 | 23.0 | NE |
| 11 | 4 | 1.8 | 39.0 | 3.0 | SSW |
| 11 | 5 | 0.7 | 28.0 | 7.0 | SSW |
| 11 | 6 | 0.5 | 28.0 | 22.0 | SE |
| 11 | 7 | 0.8 | 20.0 | 24.0 | SW |
| 11 | 8 | 0.8 | 26.0 | 23.0 | NW |
| 11 | 9 | 0.0 | 0.0 | 0.0 | ------- |
| 11 | 10 | 0.0 | 0.0 | 0.0 | ------- |
| 11 | 11 | 0.0 | 0.0 | 0.0 | ------- |
| 11 | 12 | 0.0 | 0.0 | 0.0 | ------- |
| AVG | | 0.7 | 39.0 | FEB | SSW |