| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4° | -6.6° | 35.3mm | 5.4 | 25 |
| February | 6.9° | -4.1° | 48.4mm | 4.9 | 39 |
| March | 12.7° | 0.6° | 69mm | 8.1 | 58 |
| April | 18.6° | 6.7° | 100.4mm | 9.8 | 76 |
| May | 23.5° | 12.4° | 139.1mm | 12.4 | 75 |
| June | 28° | 17.4° | 172.6mm | 10.5 | 75 |
| July | 30.5° | 19.8° | 106.3mm | 9.5 | 67 |
| August | 30.6° | 19.3° | 103.1mm | 8.6 | 68 |
| September | 26.1° | 14° | 106.7mm | 8.7 | 83 |
| October | 19.8° | 7.5° | 86.4mm | 9.1 | 81 |
| November | 12.6° | 1.7° | 47.3mm | 5.8 | 64 |
| December | 5.2° | -4.7° | 35.5mm | 6.3 | 30 |
January in Lee's Summit averages a daily high of 4°C with nights around -6.6°C. Expect roughly 5.4 wet days totalling 35.3mm. A hard month to visit for comfort alone.
February in Lee's Summit averages a daily high of 6.9°C with nights around -4.1°C. Expect roughly 4.9 wet days totalling 48.4mm. Demanding conditions — pack for it and plan indoor options.
March in Lee's Summit averages a daily high of 12.7°C with nights around 0.6°C. Expect roughly 8.1 wet days totalling 69mm. Generally workable, with some weather to plan around.
April in Lee's Summit averages a daily high of 18.6°C with nights around 6.7°C. Expect roughly 9.8 wet days totalling 100.4mm. Comfortable conditions for being outdoors all day.
May in Lee's Summit averages a daily high of 23.5°C with nights around 12.4°C. Expect roughly 12.4 wet days totalling 139.1mm. Comfortable conditions for being outdoors all day.
June in Lee's Summit averages a daily high of 28°C with nights around 17.4°C. Expect roughly 10.5 wet days totalling 172.6mm. Comfortable conditions for being outdoors all day.
July in Lee's Summit averages a daily high of 30.5°C with nights around 19.8°C. Expect roughly 9.5 wet days totalling 106.3mm. Generally workable, with some weather to plan around.
August in Lee's Summit averages a daily high of 30.6°C with nights around 19.3°C. Expect roughly 8.6 wet days totalling 103.1mm. Generally workable, with some weather to plan around.
September in Lee's Summit averages a daily high of 26.1°C with nights around 14°C. Expect roughly 8.7 wet days totalling 106.7mm. Comfortable conditions for being outdoors all day.
October in Lee's Summit averages a daily high of 19.8°C with nights around 7.5°C. Expect roughly 9.1 wet days totalling 86.4mm. Comfortable conditions for being outdoors all day.
November in Lee's Summit averages a daily high of 12.6°C with nights around 1.7°C. Expect roughly 5.8 wet days totalling 47.3mm. Generally workable, with some weather to plan around.
December in Lee's Summit averages a daily high of 5.2°C with nights around -4.7°C. Expect roughly 6.3 wet days totalling 35.5mm. 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. Lee's Summit peaks at 83.
Based on 30 years of records, April–June scores highest for comfort in Lee's Summit, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 30.6°C.
June is the wettest, averaging 172.6mm of rain across roughly 10.5 wet days.
January is the coolest month, with average daily highs around 4°C.