Average Monthly Precipitation for Each State in Fall
How much precipitation each state in the US gets on average in a month during fall is listed below.
The table includes total rainfall and snowfall for each autumn month, September, October and November, plus a monthly average for the entire season. The states are also ranked from the wettest state in fall at number 1, to the driest state at number 50.
State-wide averages of monthly precipitation in fall range from a high of 5.23 inches (133 millimetres) in Hawaii to a low of 0.76 inches (19 millimetres) in Nevada. For the entire United States, excluding Hawaii and Alaska, the average amount of moisture falling as rain and snow is 2.42 inches (61 millimetres).
The precipitation averages are based on data collected by weather stations throughout each state during the years 1971 to 2000 and made available by the NOAA National Climatic Data Center of the United States.
| Fall Average | Rank | State | Sep | Oct | Nov | |
|---|---|---|---|---|---|---|
| inches | mm | inches | inches | inches | ||
| 4.07 | 103 | 8 | Alabama | 4.3 | 3.2 | 4.8 |
| 2.49 | 63 | 35 | Alaska | 2.9 | 2.6 | 2.0 |
| 1.16 | 29 | 46 | Arizona | 1.3 | 1.2 | 1.0 |
| 4.33 | 110 | 4 | Arkansas | 3.7 | 4.1 | 5.2 |
| 1.47 | 37 | 41 | California | 0.6 | 1.2 | 2.6 |
| 1.18 | 30 | 45 | Colorado | 1.4 | 1.2 | 1.0 |
| 4.35 | 110 | 3 | Connecticut | 4.4 | 4.3 | 4.4 |
| 3.62 | 92 | 19 | Delaware | 4.2 | 3.4 | 3.3 |
| 4.24 | 108 | 5 | Florida | 6.4 | 3.5 | 2.9 |
| 3.47 | 88 | 24 | Georgia | 3.9 | 3.0 | 3.5 |
| 5.23 | 133 | 1 | Hawaii | 4.1 | 4.7 | 6.9 |
| 1.48 | 38 | 40 | Idaho | 1.1 | 1.3 | 2.1 |
| 3.15 | 80 | 29 | Illinois | 3.2 | 2.9 | 3.3 |
| 3.25 | 83 | 28 | Indiana | 3.2 | 2.9 | 3.6 |
| 2.68 | 68 | 34 | Iowa | 3.4 | 2.5 | 2.1 |
| 2.19 | 56 | 38 | Kansas | 2.7 | 2.2 | 1.7 |
| 3.55 | 90 | 23 | Kentucky | 3.5 | 3.1 | 4.0 |
| 4.56 | 116 | 2 | Louisiana | 4.6 | 4.0 | 5.1 |
| 3.71 | 94 | 16 | Maine | 3.7 | 3.7 | 3.8 |
| 3.58 | 91 | 20 | Maryland | 4.0 | 3.4 | 3.3 |
| 4.11 | 104 | 7 | Massachusetts | 3.9 | 4.2 | 4.2 |
| 3.08 | 78 | 30 | Michigan | 3.7 | 2.9 | 2.7 |
| 2.25 | 57 | 37 | Minnesota | 2.9 | 2.3 | 1.6 |
| 4.13 | 105 | 6 | Mississippi | 3.8 | 3.5 | 5.1 |
| 3.70 | 94 | 17 | Missouri | 4.0 | 3.4 | 3.8 |
| Fall Average | Rank | State | Sep | Oct | Nov | |
|---|---|---|---|---|---|---|
| inches | mm | inches | inches | inches | ||
| 1.08 | 27 | 48 | Montana | 1.3 | 1.1 | 0.9 |
| 1.60 | 41 | 39 | Nebraska | 2.1 | 1.6 | 1.1 |
| 0.76 | 19 | 50 | Nevada | 0.7 | 0.8 | 0.8 |
| 3.84 | 98 | 12 | New Hampshire | 3.7 | 4.0 | 3.9 |
| 3.76 | 96 | 14 | New Jersey | 4.1 | 3.5 | 3.6 |
| 1.32 | 34 | 43 | New Mexico | 1.8 | 1.3 | 0.8 |
| 3.76 | 96 | 14 | New York | 4.1 | 3.5 | 3.7 |
| 3.92 | 100 | 11 | North Carolina | 4.8 | 3.6 | 3.4 |
| 1.29 | 33 | 44 | North Dakota | 1.7 | 1.4 | 0.7 |
| 2.95 | 75 | 31 | Ohio | 3.1 | 2.6 | 3.1 |
| 3.32 | 84 | 26 | Oklahoma | 3.8 | 3.4 | 2.8 |
| 2.29 | 58 | 36 | Oregon | 1.1 | 1.9 | 3.9 |
| 3.58 | 91 | 20 | Pennsylvania | 4.1 | 3.2 | 3.5 |
| 4.04 | 103 | 9 | Rhode Island | 3.8 | 3.8 | 4.5 |
| 3.70 | 94 | 17 | South Carolina | 4.5 | 3.4 | 3.2 |
| 1.36 | 35 | 42 | South Dakota | 1.7 | 1.6 | 0.8 |
| 3.98 | 101 | 10 | Tennessee | 3.9 | 3.3 | 4.8 |
| 2.71 | 69 | 33 | Texas | 3.2 | 3.0 | 2.0 |
| 1.12 | 28 | 47 | Utah | 1.1 | 1.3 | 1.0 |
| 3.77 | 96 | 13 | Vermont | 4.0 | 3.7 | 3.7 |
| 3.58 | 91 | 20 | Virginia | 4.0 | 3.5 | 3.2 |
| 3.46 | 88 | 25 | Washington | 1.7 | 3.1 | 5.7 |
| 3.31 | 84 | 27 | West Virginia | 3.5 | 3.1 | 3.4 |
| 2.84 | 72 | 32 | Wisconsin | 3.7 | 2.5 | 2.3 |
| 0.97 | 25 | 49 | Wyoming | 1.2 | 1.0 | 0.7 |