| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 11.6° | 0.7° | 110mm | 10.7 | 50 |
| February | 14.2° | 2.7° | 106mm | 11 | 59 |
| March | 18.5° | 6.3° | 121.4mm | 10.7 | 74 |
| April | 22.9° | 10.1° | 99mm | 10.1 | 80 |
| May | 27.2° | 15.2° | 96.9mm | 10.8 | 78 |
| June | 30.9° | 19.5° | 110.3mm | 12 | 60 |
| July | 32.1° | 21.4° | 131.1mm | 12.7 | 54 |
| August | 31.8° | 21.1° | 119.2mm | 11.7 | 57 |
| September | 28.6° | 17.6° | 106.6mm | 8.1 | 77 |
| October | 23.4° | 11.1° | 73.9mm | 8.6 | 83 |
| November | 17.7° | 5.5° | 95.7mm | 8.8 | 75 |
| December | 13° | 2.5° | 116.6mm | 11.1 | 55 |
January in Roswell averages a daily high of 11.6°C with nights around 0.7°C. Expect roughly 10.7 wet days totalling 110mm. Demanding conditions — pack for it and plan indoor options.
February in Roswell averages a daily high of 14.2°C with nights around 2.7°C. Expect roughly 11 wet days totalling 106mm. Generally workable, with some weather to plan around.
March in Roswell averages a daily high of 18.5°C with nights around 6.3°C. Expect roughly 10.7 wet days totalling 121.4mm. Generally workable, with some weather to plan around.
April in Roswell averages a daily high of 22.9°C with nights around 10.1°C. Expect roughly 10.1 wet days totalling 99mm. Comfortable conditions for being outdoors all day.
May in Roswell averages a daily high of 27.2°C with nights around 15.2°C. Expect roughly 10.8 wet days totalling 96.9mm. Comfortable conditions for being outdoors all day.
June in Roswell averages a daily high of 30.9°C with nights around 19.5°C. Expect roughly 12 wet days totalling 110.3mm. Generally workable, with some weather to plan around.
July in Roswell averages a daily high of 32.1°C with nights around 21.4°C. Expect roughly 12.7 wet days totalling 131.1mm. Demanding conditions — pack for it and plan indoor options.
August in Roswell averages a daily high of 31.8°C with nights around 21.1°C. Expect roughly 11.7 wet days totalling 119.2mm. Generally workable, with some weather to plan around.
September in Roswell averages a daily high of 28.6°C with nights around 17.6°C. Expect roughly 8.1 wet days totalling 106.6mm. Comfortable conditions for being outdoors all day.
October in Roswell averages a daily high of 23.4°C with nights around 11.1°C. Expect roughly 8.6 wet days totalling 73.9mm. Comfortable conditions for being outdoors all day.
November in Roswell averages a daily high of 17.7°C with nights around 5.5°C. Expect roughly 8.8 wet days totalling 95.7mm. Comfortable conditions for being outdoors all day.
December in Roswell averages a daily high of 13°C with nights around 2.5°C. Expect roughly 11.1 wet days totalling 116.6mm. 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. Roswell peaks at 83.
Based on 30 years of records, September–November scores highest for comfort in Roswell, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 32.1°C.
July is the wettest, averaging 131.1mm of rain across roughly 12.7 wet days.
January is the coolest month, with average daily highs around 11.6°C.