| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -5.1° | -14° | 23.4mm | 8.8 | 12 |
| February | -2.7° | -12.5° | 26.2mm | 7.4 | 15 |
| March | 4.6° | -5.2° | 45mm | 8.9 | 22 |
| April | 12.9° | 1.9° | 82.7mm | 11 | 55 |
| May | 20° | 8.6° | 111.9mm | 12.7 | 75 |
| June | 25.5° | 14.4° | 110.3mm | 11.9 | 76 |
| July | 27.8° | 17° | 93.2mm | 10 | 77 |
| August | 26.3° | 15.7° | 119.1mm | 10.1 | 80 |
| September | 22.5° | 11.3° | 78.9mm | 9.1 | 82 |
| October | 14.3° | 3.8° | 62.1mm | 9.4 | 63 |
| November | 5.5° | -3.3° | 38.1mm | 7.4 | 31 |
| December | -2.4° | -10.5° | 33.5mm | 9.5 | 11 |
January in Minnetonka averages a daily high of -5.1°C with nights around -14°C. Expect roughly 8.8 wet days totalling 23.4mm. A hard month to visit for comfort alone.
February in Minnetonka averages a daily high of -2.7°C with nights around -12.5°C. Expect roughly 7.4 wet days totalling 26.2mm. A hard month to visit for comfort alone.
March in Minnetonka averages a daily high of 4.6°C with nights around -5.2°C. Expect roughly 8.9 wet days totalling 45mm. A hard month to visit for comfort alone.
April in Minnetonka averages a daily high of 12.9°C with nights around 1.9°C. Expect roughly 11 wet days totalling 82.7mm. Generally workable, with some weather to plan around.
May in Minnetonka averages a daily high of 20°C with nights around 8.6°C. Expect roughly 12.7 wet days totalling 111.9mm. Comfortable conditions for being outdoors all day.
June in Minnetonka averages a daily high of 25.5°C with nights around 14.4°C. Expect roughly 11.9 wet days totalling 110.3mm. Comfortable conditions for being outdoors all day.
July in Minnetonka averages a daily high of 27.8°C with nights around 17°C. Expect roughly 10 wet days totalling 93.2mm. Comfortable conditions for being outdoors all day.
August in Minnetonka averages a daily high of 26.3°C with nights around 15.7°C. Expect roughly 10.1 wet days totalling 119.1mm. Comfortable conditions for being outdoors all day.
September in Minnetonka averages a daily high of 22.5°C with nights around 11.3°C. Expect roughly 9.1 wet days totalling 78.9mm. Comfortable conditions for being outdoors all day.
October in Minnetonka averages a daily high of 14.3°C with nights around 3.8°C. Expect roughly 9.4 wet days totalling 62.1mm. Generally workable, with some weather to plan around.
November in Minnetonka averages a daily high of 5.5°C with nights around -3.3°C. Expect roughly 7.4 wet days totalling 38.1mm. A hard month to visit for comfort alone.
December in Minnetonka averages a daily high of -2.4°C with nights around -10.5°C. Expect roughly 9.5 wet days totalling 33.5mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Minnetonka peaks at 82.
Based on 30 years of records, May–September scores highest for comfort in Minnetonka, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 27.8°C.
August is the wettest, averaging 119.1mm of rain across roughly 10.1 wet days.
January is the coolest month, with average daily highs around -5.1°C.