| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 10.5° | -1.5° | 97.5mm | 11 | 42 |
| February | 12.5° | -0.2° | 81.9mm | 10.2 | 52 |
| March | 16.9° | 3.5° | 106.3mm | 10.9 | 68 |
| April | 22.1° | 8.2° | 95.4mm | 9.6 | 81 |
| May | 25.9° | 13.6° | 98.5mm | 10.1 | 80 |
| June | 29.9° | 18.3° | 98.6mm | 9.9 | 69 |
| July | 31.9° | 20.6° | 123.6mm | 10.7 | 59 |
| August | 31° | 19.9° | 114.4mm | 10.1 | 64 |
| September | 27.7° | 16.4° | 140.3mm | 8.8 | 80 |
| October | 22.5° | 9.4° | 87.3mm | 8 | 84 |
| November | 16.9° | 3.2° | 83mm | 8.6 | 73 |
| December | 12.3° | 0.3° | 103.2mm | 10.8 | 51 |
January in Chapel Hill averages a daily high of 10.5°C with nights around -1.5°C. Expect roughly 11 wet days totalling 97.5mm. Demanding conditions — pack for it and plan indoor options.
February in Chapel Hill averages a daily high of 12.5°C with nights around -0.2°C. Expect roughly 10.2 wet days totalling 81.9mm. Demanding conditions — pack for it and plan indoor options.
March in Chapel Hill averages a daily high of 16.9°C with nights around 3.5°C. Expect roughly 10.9 wet days totalling 106.3mm. Generally workable, with some weather to plan around.
April in Chapel Hill averages a daily high of 22.1°C with nights around 8.2°C. Expect roughly 9.6 wet days totalling 95.4mm. Comfortable conditions for being outdoors all day.
May in Chapel Hill averages a daily high of 25.9°C with nights around 13.6°C. Expect roughly 10.1 wet days totalling 98.5mm. Comfortable conditions for being outdoors all day.
June in Chapel Hill averages a daily high of 29.9°C with nights around 18.3°C. Expect roughly 9.9 wet days totalling 98.6mm. Generally workable, with some weather to plan around.
July in Chapel Hill averages a daily high of 31.9°C with nights around 20.6°C. Expect roughly 10.7 wet days totalling 123.6mm. Generally workable, with some weather to plan around.
August in Chapel Hill averages a daily high of 31°C with nights around 19.9°C. Expect roughly 10.1 wet days totalling 114.4mm. Generally workable, with some weather to plan around.
September in Chapel Hill averages a daily high of 27.7°C with nights around 16.4°C. Expect roughly 8.8 wet days totalling 140.3mm. Comfortable conditions for being outdoors all day.
October in Chapel Hill averages a daily high of 22.5°C with nights around 9.4°C. Expect roughly 8 wet days totalling 87.3mm. Comfortable conditions for being outdoors all day.
November in Chapel Hill averages a daily high of 16.9°C with nights around 3.2°C. Expect roughly 8.6 wet days totalling 83mm. Generally workable, with some weather to plan around.
December in Chapel Hill averages a daily high of 12.3°C with nights around 0.3°C. Expect roughly 10.8 wet days totalling 103.2mm. Demanding conditions — pack for it and plan indoor options.
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. Chapel Hill peaks at 84.
Based on 30 years of records, April–May scores highest for comfort in Chapel Hill, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 31.9°C.
September is the wettest, averaging 140.3mm of rain across roughly 8.8 wet days.
January is the coolest month, with average daily highs around 10.5°C.