| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0.1° | -7.5° | 68.6mm | 16.6 | 1 |
| February | 2.2° | -6.4° | 60.9mm | 12.4 | 8 |
| March | 8.6° | -1.9° | 65mm | 12.4 | 33 |
| April | 15.5° | 3.4° | 88.1mm | 13.4 | 59 |
| May | 21.6° | 9.6° | 109.4mm | 13.3 | 73 |
| June | 26.8° | 15.2° | 103.3mm | 11.1 | 78 |
| July | 28.5° | 17.3° | 102.2mm | 9.3 | 75 |
| August | 27.7° | 16.6° | 99.9mm | 10 | 77 |
| September | 24.3° | 12.5° | 76.4mm | 9.1 | 82 |
| October | 17.1° | 6.4° | 94.1mm | 12 | 67 |
| November | 9.3° | 0.5° | 65.5mm | 11.9 | 40 |
| December | 2.9° | -4.3° | 62mm | 14.8 | 6 |
January in South Bend averages a daily high of 0.1°C with nights around -7.5°C. Expect roughly 16.6 wet days totalling 68.6mm. A hard month to visit for comfort alone.
February in South Bend averages a daily high of 2.2°C with nights around -6.4°C. Expect roughly 12.4 wet days totalling 60.9mm. A hard month to visit for comfort alone.
March in South Bend averages a daily high of 8.6°C with nights around -1.9°C. Expect roughly 12.4 wet days totalling 65mm. A hard month to visit for comfort alone.
April in South Bend averages a daily high of 15.5°C with nights around 3.4°C. Expect roughly 13.4 wet days totalling 88.1mm. Generally workable, with some weather to plan around.
May in South Bend averages a daily high of 21.6°C with nights around 9.6°C. Expect roughly 13.3 wet days totalling 109.4mm. Generally workable, with some weather to plan around.
June in South Bend averages a daily high of 26.8°C with nights around 15.2°C. Expect roughly 11.1 wet days totalling 103.3mm. Comfortable conditions for being outdoors all day.
July in South Bend averages a daily high of 28.5°C with nights around 17.3°C. Expect roughly 9.3 wet days totalling 102.2mm. Comfortable conditions for being outdoors all day.
August in South Bend averages a daily high of 27.7°C with nights around 16.6°C. Expect roughly 10 wet days totalling 99.9mm. Comfortable conditions for being outdoors all day.
September in South Bend averages a daily high of 24.3°C with nights around 12.5°C. Expect roughly 9.1 wet days totalling 76.4mm. Comfortable conditions for being outdoors all day.
October in South Bend averages a daily high of 17.1°C with nights around 6.4°C. Expect roughly 12 wet days totalling 94.1mm. Generally workable, with some weather to plan around.
November in South Bend averages a daily high of 9.3°C with nights around 0.5°C. Expect roughly 11.9 wet days totalling 65.5mm. Demanding conditions — pack for it and plan indoor options.
December in South Bend averages a daily high of 2.9°C with nights around -4.3°C. Expect roughly 14.8 wet days totalling 62mm. 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. South Bend peaks at 82.
Based on 30 years of records, June–September scores highest for comfort in South Bend, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.5°C.
May is the wettest, averaging 109.4mm of rain across roughly 13.3 wet days.
January is the coolest month, with average daily highs around 0.1°C.