Missouri weather in September: Statewide normals and every place, NOAA 1991-2020
In September, Missouri's statewide normal high is 80°F and normal low 57°F; normal highs run from 76°F in Unionville to 85°F in Kennett (NOAA 1991-2020 normals).
- Statewide normal high
- 80°FSeptember, 1991-2020
- Statewide normal low
- 57°FSeptember, 1991-2020
- Statewide normal precipitation
- 3.87 inSeptember
- Warmest place
- 85°Fnormal high, Kennett
- Coolest place
- 76°Fnormal high, Unionville
Where is Missouri warmest and wettest in September?
Kennett has the warmest September afternoons (85°F) and Unionville the coolest (76°F). Branson gets the most precipitation (5.08 in) and St. Louis the least (2.96 in).
Statewide, September averaged 71.5°F in 2021, 69.5°F in 2022, 70.4°F in 2023, 69.8°F in 2024, 71.3°F in 2025, against a 1991-2020 normal of 68.2°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Kansas City | 79°F | 58°F | 4.04 | 0.0 |
| St. Louis | 81°F | 61°F | 2.96 | 0.0 |
| Springfield | 81°F | 59°F | 4.31 | 0.0 |
| Columbia | 80°F | 58°F | 3.83 | 0.0 |
| Independence | 78°F | 57°F | 4.77 | 0.0 |
| Lee's Summit | 79°F | 59°F | 3.07 | – |
| St. Charles | 81°F | 57°F | 2.97 | – |
| St. Joseph | 80°F | 54°F | 3.18 | – |
| St. Peters | 81°F | 57°F | 3.07 | 0.0 |
| Joplin | 82°F | 59°F | 4.18 | – |
| Jefferson City | 80°F | 57°F | 3.73 | – |
| Cape Girardeau | 82°F | 58°F | 3.61 | – |
| Ozark | 82°F | 57°F | 4.20 | 0.0 |
| Sedalia | 79°F | 57°F | 3.01 | – |
| Rolla | 80°F | 59°F | 4.00 | 0.0 |
| Warrensburg | 81°F | 55°F | 4.12 | – |
| Farmington | 81°F | 56°F | 3.18 | 0.0 |
| Kirksville | 77°F | 54°F | 3.65 | – |
| Hannibal | 78°F | 57°F | 3.53 | – |
| Poplar Bluff | 82°F | 59°F | 3.98 | – |
| Sikeston | 84°F | 60°F | 3.21 | 0.0 |
| Jackson | 82°F | 59°F | 3.40 | 0.0 |
| Carthage | 83°F | 59°F | – | – |
| Lebanon | 80°F | 57°F | 4.07 | 0.0 |
| Washington | 80°F | 56°F | 3.71 | 0.0 |
| Fort Leonard Wood | 80°F | 56°F | 3.85 | – |
| Marshall | 79°F | 56°F | 4.04 | 0.0 |
| Neosho | 82°F | 60°F | 4.99 | 0.0 |
| Festus | 81°F | 57°F | 3.38 | 0.0 |
| Moberly | 78°F | 57°F | 3.95 | 0.0 |
| Union | 82°F | 57°F | 3.63 | 0.0 |
| Branson | 80°F | 59°F | 5.08 | – |
| West Plains | 81°F | 57°F | 3.09 | – |
| Fulton | 78°F | 56°F | 4.19 | 0.0 |
| Bolivar | 81°F | 57°F | 4.25 | – |
| Mexico | 79°F | 56°F | 4.86 | – |
| Kearney | 80°F | 55°F | 4.91 | 0.0 |
| Smithville | 78°F | 56°F | 4.30 | – |
| Maryville | 78°F | 54°F | 3.52 | 0.0 |
| Kennett | 85°F | 60°F | – | – |
| Monett | 81°F | 58°F | 4.91 | 0.0 |
| Clinton | 81°F | 56°F | 4.32 | 0.0 |
| Warrenton | 80°F | 56°F | 3.48 | – |
| Chillicothe | 79°F | 56°F | 3.84 | – |
| Pleasant Hill | 80°F | 58°F | 4.42 | 0.0 |
| Perryville | 81°F | 55°F | 3.33 | 0.0 |
| Nevada | 80°F | 58°F | 4.60 | 0.0 |
| Marshfield | 80°F | 58°F | 4.15 | 0.0 |
| Boonville | 80°F | 57°F | 3.94 | – |
| Cameron | 79°F | 56°F | 4.24 | – |
| Richmond | 79°F | 54°F | 4.04 | – |
| Trenton | 79°F | 55°F | 3.88 | 0.0 |
| Waynesville | 81°F | 56°F | 4.18 | 0.0 |
| Weldon Spring | 80°F | 57°F | 3.50 | 0.0 |
| Caruthersville | 83°F | 63°F | 3.59 | – |
| Higginsville | 79°F | 57°F | 4.04 | 0.0 |
| Salem | 80°F | 56°F | 4.03 | 0.0 |
| Eldon | 80°F | 59°F | 4.29 | – |
| Mount Vernon | 82°F | 57°F | 4.70 | – |
| Mountain Grove | 79°F | 57°F | 4.02 | 0.0 |
| Lexington | 80°F | 57°F | 4.36 | 0.0 |
| Fredericktown | 80°F | 54°F | 3.47 | 0.0 |
| California | 80°F | 57°F | 4.11 | 0.0 |
| Bowling Green | 78°F | 56°F | 3.89 | 0.0 |
| Lamar | 80°F | 57°F | 4.78 | 0.0 |
| Butler | 81°F | 57°F | 4.31 | 0.0 |
| Brookfield | 79°F | 56°F | 3.99 | 0.0 |
| Malden | 85°F | 61°F | 3.19 | – |
| Buffalo | 81°F | 55°F | 4.11 | 0.0 |
| Carrollton | 80°F | 56°F | 4.28 | 0.0 |
| Cassville | 80°F | 56°F | 4.56 | – |
| Ava | 81°F | 54°F | 4.09 | – |
| Licking | 80°F | 56°F | 4.20 | 0.0 |
| Vandalia | 79°F | 56°F | 3.69 | – |
| Bethany | 78°F | 55°F | 3.90 | 0.0 |
| Windsor | 80°F | 59°F | – | – |
| Canton | 77°F | 56°F | 3.49 | – |
| Portageville | 81°F | 61°F | 3.43 | 0.0 |
| Monroe City | 79°F | 55°F | 3.92 | – |
| Versailles | 79°F | 59°F | 4.27 | – |
| New Madrid | 82°F | 60°F | 3.94 | – |
| Potosi | 78°F | 57°F | 3.89 | 0.0 |
| Houston | 79°F | 57°F | 4.17 | 0.0 |
| Anderson | 81°F | 58°F | 4.30 | 0.0 |
| Elsberry | 79°F | 56°F | 3.49 | 0.0 |
| Gallatin | 77°F | 54°F | 4.53 | 0.0 |
| Stockton | 82°F | 60°F | 4.13 | 0.0 |
| Doniphan | 82°F | 58°F | 3.70 | 0.0 |
| Hamilton | 78°F | 54°F | 4.25 | 0.0 |
| Memphis | 77°F | 53°F | 3.57 | 0.0 |
| Albany | 79°F | 55°F | 4.07 | – |
| Unionville | 76°F | 55°F | 3.52 | 0.0 |
| Salisbury | 80°F | 56°F | 3.73 | – |
| Shelbina | 79°F | 54°F | 3.90 | 0.0 |
| Ash Grove | 83°F | 58°F | 4.41 | 0.0 |
| Tarkio | 78°F | 54°F | – | – |
| Steelville | 79°F | 51°F | – | – |
| Marble Hill | 83°F | 58°F | 3.59 | – |
| Advance | 82°F | 58°F | – | – |
| Sweet Springs | 80°F | 56°F | 4.00 | 0.0 |
| Mansfield | 80°F | 57°F | 4.07 | 0.0 |
| Billings | 82°F | 57°F | 4.80 | 0.0 |
| Cole Camp | 79°F | 56°F | 4.24 | 0.0 |
| Appleton City | 79°F | 58°F | 4.33 | 0.0 |
| New Franklin | 79°F | 56°F | 4.10 | 0.0 |
| Winona | 80°F | 53°F | 4.07 | – |
| Princeton | 77°F | 54°F | 3.81 | – |
| Osceola | 81°F | 58°F | 4.02 | 0.0 |
| Seligman | 81°F | 55°F | – | – |
| Diamond | 83°F | 57°F | 4.48 | – |
| Lockwood | 81°F | 57°F | 4.66 | 0.0 |
| Oregon | 78°F | 56°F | – | – |
| Waverly | 79°F | 58°F | 4.20 | – |
| Brunswick | 79°F | 58°F | 3.49 | 0.0 |
| Grant City | 77°F | 53°F | – | – |
| Iberia | 80°F | 57°F | 3.86 | 0.0 |
| Alton | 81°F | 55°F | 3.46 | 0.0 |
| Vienna | 82°F | 58°F | 4.01 | – |
| Green City | 77°F | 52°F | 4.21 | – |
| Eminence | 83°F | 56°F | 3.77 | 0.0 |
| Galena | 82°F | 56°F | 4.28 | 0.0 |
| Summersville | 80°F | 57°F | – | – |
| Washburn | 82°F | 59°F | 4.71 | – |
| Rosebud | 79°F | 52°F | 4.01 | 0.0 |
| Clarksville | 79°F | 58°F | 3.21 | 0.0 |
| Linneus | 77°F | 55°F | 4.45 | – |
| Spickard | 77°F | 54°F | 3.88 | – |
| Conception | 78°F | 55°F | 3.74 | 0.0 |
| Cosby | 79°F | 55°F | 3.57 | – |
| Saverton | 80°F | 59°F | 3.76 | – |
| Wasola | 80°F | 56°F | 4.02 | – |
| Amity | 78°F | 54°F | 4.03 | 0.0 |
| Grovespring | 80°F | 56°F | 3.82 | – |
| Clearwater Dam | 80°F | 57°F | 3.84 | – |
| Dora (3 mi SE) | 81°F | 58°F | 4.20 | 0.0 |
| Eldorado Springs | 81°F | 58°F | 4.73 | 0.0 |
| Elm | 79°F | 56°F | 3.92 | 0.0 |
| Freedom | 80°F | 56°F | 4.03 | 0.0 |
| Gentryville | 82°F | 56°F | – | – |
| Kansas City Downtown Airport | 80°F | 61°F | 3.78 | 0.0 |
| Lakeside | 81°F | 61°F | 4.16 | 0.0 |
| Lees Summit Reed Wildlife Refuge | 76°F | 57°F | – | – |
| Long Branch Reservoir | 79°F | 57°F | 3.87 | – |
| Oldfield | 79°F | 51°F | 4.75 | 0.0 |
| Ozark Beach | 84°F | 58°F | 4.13 | 0.0 |
| Pomme De Terre Dam | 80°F | 59°F | 4.16 | – |
| Round Spring (2 mi SW) | 81°F | 54°F | 3.79 | 0.0 |
| Springfield Wbo | 81°F | 58°F | 4.45 | – |
| St Louis Science Center | 82°F | 62°F | 3.41 | – |
| St Louis Spirit of St. Louis Airport | 81°F | 57°F | 3.02 | – |
| Steffenville | 78°F | 55°F | 3.73 | 0.0 |
| Truman Dam & Reservoir | 82°F | 59°F | 4.11 | – |
| Vichy Rolla National Airport | 79°F | 58°F | 3.81 | – |
| Wappapello Dam | 81°F | 60°F | 3.58 | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.