| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 11.6° | -0.3° | 100.5mm | 9.5 | 51 |
| February | 13.6° | 1.2° | 80.9mm | 8.6 | 61 |
| March | 18° | 4.7° | 89.1mm | 9.1 | 75 |
| April | 22.8° | 9.4° | 95.3mm | 7.8 | 84 |
| May | 26.6° | 14.4° | 94.3mm | 9.1 | 82 |
| June | 30.3° | 19° | 105mm | 9.1 | 69 |
| July | 32.1° | 21° | 97.5mm | 10.3 | 59 |
| August | 31.5° | 20.6° | 104.8mm | 9.6 | 63 |
| September | 28.3° | 17.2° | 96.7mm | 6.9 | 81 |
| October | 23.3° | 10.5° | 72.2mm | 6.2 | 88 |
| November | 17.3° | 4.4° | 74.7mm | 6.7 | 78 |
| December | 12.8° | 1.1° | 100mm | 8.9 | 58 |
January in Gastonia averages a daily high of 11.6°C with nights around -0.3°C. Expect roughly 9.5 wet days totalling 100.5mm. Demanding conditions — pack for it and plan indoor options.
February in Gastonia averages a daily high of 13.6°C with nights around 1.2°C. Expect roughly 8.6 wet days totalling 80.9mm. Generally workable, with some weather to plan around.
March in Gastonia averages a daily high of 18°C with nights around 4.7°C. Expect roughly 9.1 wet days totalling 89.1mm. Comfortable conditions for being outdoors all day.
April in Gastonia averages a daily high of 22.8°C with nights around 9.4°C. Expect roughly 7.8 wet days totalling 95.3mm. Comfortable conditions for being outdoors all day.
May in Gastonia averages a daily high of 26.6°C with nights around 14.4°C. Expect roughly 9.1 wet days totalling 94.3mm. Comfortable conditions for being outdoors all day.
June in Gastonia averages a daily high of 30.3°C with nights around 19°C. Expect roughly 9.1 wet days totalling 105mm. Generally workable, with some weather to plan around.
July in Gastonia averages a daily high of 32.1°C with nights around 21°C. Expect roughly 10.3 wet days totalling 97.5mm. Generally workable, with some weather to plan around.
August in Gastonia averages a daily high of 31.5°C with nights around 20.6°C. Expect roughly 9.6 wet days totalling 104.8mm. Generally workable, with some weather to plan around.
September in Gastonia averages a daily high of 28.3°C with nights around 17.2°C. Expect roughly 6.9 wet days totalling 96.7mm. Comfortable conditions for being outdoors all day.
October in Gastonia averages a daily high of 23.3°C with nights around 10.5°C. Expect roughly 6.2 wet days totalling 72.2mm. Comfortable conditions for being outdoors all day.
November in Gastonia averages a daily high of 17.3°C with nights around 4.4°C. Expect roughly 6.7 wet days totalling 74.7mm. Comfortable conditions for being outdoors all day.
December in Gastonia averages a daily high of 12.8°C with nights around 1.1°C. Expect roughly 8.9 wet days totalling 100mm. 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. Gastonia peaks at 88.
Based on 30 years of records, April–May scores highest for comfort in Gastonia, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 32.1°C.
June is the wettest, averaging 105mm of rain across roughly 9.1 wet days.
January is the coolest month, with average daily highs around 11.6°C.