| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 39°F | 27°F | 0.6" |
| February | 20°F | 43°F | 30°F | 0.9" |
| March | 33°F | 58°F | 44°F | 2.0" |
| April | 43°F | 68°F | 54°F | 4.3" |
| May | 53°F | 77°F | 64°F | 4.6" |
| June | 64°F | 86°F | 75°F | 6.0" |
| July | 67°F | 89°F | 78°F | 4.0" |
| August | 64°F | 87°F | 75°F | 4.7" |
| September | 56°F | 81°F | 67°F | 3.5" |
| October | 44°F | 69°F | 55°F | 3.1" |
| November | 32°F | 56°F | 43°F | 1.5" |
| December | 21°F | 40°F | 30°F | 1.9" |
| Index | Elmo | Missouri | National |
| Air quality index | 43 | 97 | 42 |
| Pollution index | 543,130 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 283 |
| Days with moderate air quality | 82 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Yorktown, IA | 47 | 40 | 20.0% |
| Northboro, IA | 62 | 40 | 20.0% |
| Coin, IA | 198 | 40 | 20.0% |
| New Market, IA | 483 | 43 | 14.0% |
| Quitman, MO | 10 | 43 | 14.0% |
| Elmo, MO | 177 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Linn Grove, IA | 177 | 35 | 30.0% |
| Woden, IA | 177 | 15 | 70.0% |
| Gaylord, KS | 177 | 19 | 62.0% |
| Prospect, LA | 177 | 30 | 40.0% |
| Bay View, MI | 177 | 36 | 28.0% |
| Elmo, MO | 177 | 43 | 14.0% |
Here are the best places to live in Missouri
10 Best cities in Missouri for employment
Check out the 10 safest cities in Missouri
See the best places to live in & around Elmo