| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 14.8° | 3.2° | 107.2mm | 9.8 | 64 |
| February | 17.3° | 5.2° | 117.7mm | 9 | 73 |
| March | 21.3° | 8.6° | 122.8mm | 9.5 | 81 |
| April | 25.1° | 12.1° | 107.4mm | 8 | 84 |
| May | 29.3° | 17.1° | 86.8mm | 7.7 | 75 |
| June | 32.2° | 21.2° | 104.7mm | 10.5 | 58 |
| July | 33.6° | 22.9° | 105.3mm | 11.9 | 50 |
| August | 33.2° | 22.7° | 111.2mm | 11.1 | 53 |
| September | 30.5° | 19.8° | 94.9mm | 7.2 | 72 |
| October | 25.7° | 13.6° | 71.7mm | 6.2 | 88 |
| November | 20.1° | 7.8° | 92.8mm | 7.2 | 86 |
| December | 16° | 4.7° | 122mm | 10.1 | 67 |
January in Columbus averages a daily high of 14.8°C with nights around 3.2°C. Expect roughly 9.8 wet days totalling 107.2mm. Generally workable, with some weather to plan around.
February in Columbus averages a daily high of 17.3°C with nights around 5.2°C. Expect roughly 9 wet days totalling 117.7mm. Generally workable, with some weather to plan around.
March in Columbus averages a daily high of 21.3°C with nights around 8.6°C. Expect roughly 9.5 wet days totalling 122.8mm. Comfortable conditions for being outdoors all day.
April in Columbus averages a daily high of 25.1°C with nights around 12.1°C. Expect roughly 8 wet days totalling 107.4mm. Comfortable conditions for being outdoors all day.
May in Columbus averages a daily high of 29.3°C with nights around 17.1°C. Expect roughly 7.7 wet days totalling 86.8mm. Comfortable conditions for being outdoors all day.
June in Columbus averages a daily high of 32.2°C with nights around 21.2°C. Expect roughly 10.5 wet days totalling 104.7mm. Generally workable, with some weather to plan around.
July in Columbus averages a daily high of 33.6°C with nights around 22.9°C. Expect roughly 11.9 wet days totalling 105.3mm. Demanding conditions — pack for it and plan indoor options.
August in Columbus averages a daily high of 33.2°C with nights around 22.7°C. Expect roughly 11.1 wet days totalling 111.2mm. Demanding conditions — pack for it and plan indoor options.
September in Columbus averages a daily high of 30.5°C with nights around 19.8°C. Expect roughly 7.2 wet days totalling 94.9mm. Generally workable, with some weather to plan around.
October in Columbus averages a daily high of 25.7°C with nights around 13.6°C. Expect roughly 6.2 wet days totalling 71.7mm. Comfortable conditions for being outdoors all day.
November in Columbus averages a daily high of 20.1°C with nights around 7.8°C. Expect roughly 7.2 wet days totalling 92.8mm. Comfortable conditions for being outdoors all day.
December in Columbus averages a daily high of 16°C with nights around 4.7°C. Expect roughly 10.1 wet days totalling 122mm. Generally workable, with some weather to plan around.
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. Columbus peaks at 88.
Based on 30 years of records, March–April scores highest for comfort in Columbus, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 33.6°C.
March is the wettest, averaging 122.8mm of rain across roughly 9.5 wet days.
January is the coolest month, with average daily highs around 14.8°C.