| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 25°F | 16°F | 0.5" |
| February | 11°F | 28°F | 19°F | 0.8" |
| March | 26°F | 44°F | 34°F | 1.5" |
| April | 39°F | 59°F | 48°F | 4.1" |
| May | 50°F | 72°F | 60°F | 4.4" |
| June | 60°F | 81°F | 70°F | 5.8" |
| July | 65°F | 85°F | 75°F | 4.8" |
| August | 62°F | 82°F | 72°F | 6.0" |
| September | 55°F | 75°F | 64°F | 3.1" |
| October | 42°F | 60°F | 50°F | 3.1" |
| November | 29°F | 46°F | 36°F | 1.3" |
| December | 14°F | 28°F | 21°F | 1.3" |
| Index | Excelsior | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 1,774,860 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 214 |
| Days with moderate air quality | 148 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.003% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Minnetonka, MN | 53,760 | 46 | 8.0% |
| Tonka Bay, MN | 1,466 | 46 | 8.0% |
| Crystal, MN | 22,937 | 46 | 8.0% |
| Medicine Lake, MN | 475 | 46 | 8.0% |
| St. Louis Park, MN | 48,874 | 46 | 8.0% |
| Excelsior, MN | 2,414 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Herald Harbor, MD | 2,414 | 46 | 8.0% |
| Richwood, OH | 2,414 | 46 | 8.0% |
| Wright-Patterson AFB, OH | 2,414 | 47 | 6.0% |
| Edgemont Park, MI | 2,413 | 36 | 28.0% |
| Bayard, NM | 2,415 | 37 | 26.0% |
| Excelsior, MN | 2,414 | 46 | 8.0% |
Here are the best places to live in Minnesota
Check out the 10 safest cities in Minnesota
Top 10 cities in Minnesota with the best education system
Top 10 best public schools in Excelsior