| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 14.4° | 3.2° | 61.4mm | 6.1 | 70 |
| February | 16.4° | 5.2° | 65.7mm | 6.9 | 75 |
| March | 21° | 9.8° | 94.4mm | 8.2 | 84 |
| April | 25.1° | 13.8° | 82.4mm | 7.2 | 86 |
| May | 29.4° | 19.1° | 120.4mm | 9.4 | 72 |
| June | 33.7° | 23.4° | 93.4mm | 7.1 | 59 |
| July | 36° | 25.6° | 39.7mm | 4.9 | 54 |
| August | 36.3° | 25.6° | 58.7mm | 4.8 | 53 |
| September | 32.3° | 21.5° | 75.2mm | 5.4 | 68 |
| October | 26.5° | 15.1° | 113.4mm | 6.7 | 87 |
| November | 20.1° | 9° | 75.1mm | 6.4 | 87 |
| December | 15.3° | 4.5° | 73mm | 6.5 | 72 |
January in Irving averages a daily high of 14.4°C with nights around 3.2°C. Expect roughly 6.1 wet days totalling 61.4mm. Generally workable, with some weather to plan around.
February in Irving averages a daily high of 16.4°C with nights around 5.2°C. Expect roughly 6.9 wet days totalling 65.7mm. Comfortable conditions for being outdoors all day.
March in Irving averages a daily high of 21°C with nights around 9.8°C. Expect roughly 8.2 wet days totalling 94.4mm. Comfortable conditions for being outdoors all day.
April in Irving averages a daily high of 25.1°C with nights around 13.8°C. Expect roughly 7.2 wet days totalling 82.4mm. Comfortable conditions for being outdoors all day.
May in Irving averages a daily high of 29.4°C with nights around 19.1°C. Expect roughly 9.4 wet days totalling 120.4mm. Generally workable, with some weather to plan around.
June in Irving averages a daily high of 33.7°C with nights around 23.4°C. Expect roughly 7.1 wet days totalling 93.4mm. Generally workable, with some weather to plan around.
July in Irving averages a daily high of 36°C with nights around 25.6°C. Expect roughly 4.9 wet days totalling 39.7mm. Demanding conditions — pack for it and plan indoor options.
August in Irving averages a daily high of 36.3°C with nights around 25.6°C. Expect roughly 4.8 wet days totalling 58.7mm. Demanding conditions — pack for it and plan indoor options.
September in Irving averages a daily high of 32.3°C with nights around 21.5°C. Expect roughly 5.4 wet days totalling 75.2mm. Generally workable, with some weather to plan around.
October in Irving averages a daily high of 26.5°C with nights around 15.1°C. Expect roughly 6.7 wet days totalling 113.4mm. Comfortable conditions for being outdoors all day.
November in Irving averages a daily high of 20.1°C with nights around 9°C. Expect roughly 6.4 wet days totalling 75.1mm. Comfortable conditions for being outdoors all day.
December in Irving averages a daily high of 15.3°C with nights around 4.5°C. Expect roughly 6.5 wet days totalling 73mm. 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. Irving peaks at 87.
Based on 30 years of records, March–April scores highest for comfort in Irving, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 36.3°C.
May is the wettest, averaging 120.4mm of rain across roughly 9.4 wet days.
January is the coolest month, with average daily highs around 14.4°C.