| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 11.2° | -4.2° | 17.1mm | 3.8 | 55 |
| February | 12.9° | -3° | 14mm | 4.2 | 61 |
| March | 17.9° | 1.3° | 32mm | 5.5 | 81 |
| April | 22.2° | 5.5° | 37mm | 5.3 | 89 |
| May | 27° | 11.3° | 64.2mm | 7.5 | 85 |
| June | 31.8° | 16.8° | 71.2mm | 8 | 65 |
| July | 33.8° | 19° | 69.2mm | 7.4 | 58 |
| August | 32.9° | 18.5° | 67.6mm | 7.8 | 61 |
| September | 29° | 14.3° | 41.4mm | 5.6 | 81 |
| October | 22.8° | 7.4° | 46mm | 5.4 | 89 |
| November | 16.5° | 1° | 22.5mm | 3.8 | 80 |
| December | 11.2° | -3.5° | 16.1mm | 3.7 | 56 |
January in Amarillo averages a daily high of 11.2°C with nights around -4.2°C. Expect roughly 3.8 wet days totalling 17.1mm. Generally workable, with some weather to plan around.
February in Amarillo averages a daily high of 12.9°C with nights around -3°C. Expect roughly 4.2 wet days totalling 14mm. Generally workable, with some weather to plan around.
March in Amarillo averages a daily high of 17.9°C with nights around 1.3°C. Expect roughly 5.5 wet days totalling 32mm. Comfortable conditions for being outdoors all day.
April in Amarillo averages a daily high of 22.2°C with nights around 5.5°C. Expect roughly 5.3 wet days totalling 37mm. Comfortable conditions for being outdoors all day.
May in Amarillo averages a daily high of 27°C with nights around 11.3°C. Expect roughly 7.5 wet days totalling 64.2mm. Comfortable conditions for being outdoors all day.
June in Amarillo averages a daily high of 31.8°C with nights around 16.8°C. Expect roughly 8 wet days totalling 71.2mm. Generally workable, with some weather to plan around.
July in Amarillo averages a daily high of 33.8°C with nights around 19°C. Expect roughly 7.4 wet days totalling 69.2mm. Generally workable, with some weather to plan around.
August in Amarillo averages a daily high of 32.9°C with nights around 18.5°C. Expect roughly 7.8 wet days totalling 67.6mm. Generally workable, with some weather to plan around.
September in Amarillo averages a daily high of 29°C with nights around 14.3°C. Expect roughly 5.6 wet days totalling 41.4mm. Comfortable conditions for being outdoors all day.
October in Amarillo averages a daily high of 22.8°C with nights around 7.4°C. Expect roughly 5.4 wet days totalling 46mm. Comfortable conditions for being outdoors all day.
November in Amarillo averages a daily high of 16.5°C with nights around 1°C. Expect roughly 3.8 wet days totalling 22.5mm. Comfortable conditions for being outdoors all day.
December in Amarillo averages a daily high of 11.2°C with nights around -3.5°C. Expect roughly 3.7 wet days totalling 16.1mm. 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. Amarillo peaks at 89.
Based on 30 years of records, March–May scores highest for comfort in Amarillo, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 33.8°C.
June is the wettest, averaging 71.2mm of rain across roughly 8 wet days.
January is the coolest month, with average daily highs around 11.2°C.