| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 24°F | 16°F | 1.2" |
| February | 11°F | 28°F | 18°F | 2.3" |
| March | 27°F | 44°F | 34°F | 2.2" |
| April | 39°F | 59°F | 47°F | 2.9" |
| May | 50°F | 71°F | 59°F | 4.0" |
| June | 60°F | 80°F | 69°F | 5.5" |
| July | 64°F | 83°F | 73°F | 6.8" |
| August | 61°F | 80°F | 70°F | 6.7" |
| September | 53°F | 74°F | 63°F | 4.4" |
| October | 41°F | 60°F | 49°F | 3.0" |
| November | 28°F | 45°F | 36°F | 2.0" |
| December | 13°F | 28°F | 20°F | 1.4" |
| Index | New Richland | Minnesota | National |
| Air quality index | 36 | 35 | 42 |
| Pollution index | 804,204 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 313 |
| Days with moderate air quality | 51 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Clarks Grove, MN | 640 | 15 | 70.0% |
| Hartland, MN | 416 | 15 | 70.0% |
| Manchester, MN | 56 | 15 | 70.0% |
| Waldorf, MN | 180 | 15 | 70.0% |
| Freeborn, MN | 319 | 15 | 70.0% |
| New Richland, MN | 1,039 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Tahoma, CA | 1,039 | 44 | 12.0% |
| Manassa, CO | 1,039 | 15 | 70.0% |
| Searsport, ME | 1,039 | 31 | 38.0% |
| Grande-Vallée, QC | 1,039 | n/a | |
| Saint-Cyprien, QC | 1,039 | n/a | |
| New Richland, MN | 1,039 | 36 | 28.0% |
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