| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 10.1° | -2.8° | 42.7mm | 5.8 | 50 |
| February | 12.3° | -0.9° | 46.3mm | 6.7 | 58 |
| March | 17.9° | 4.5° | 85.9mm | 9.1 | 75 |
| April | 22.8° | 9.3° | 111.6mm | 9.4 | 81 |
| May | 26.9° | 14.9° | 162.3mm | 12.4 | 75 |
| June | 31.9° | 20.1° | 118.8mm | 9.4 | 62 |
| July | 34.7° | 22.1° | 88.9mm | 7.1 | 55 |
| August | 34.6° | 21.4° | 88.8mm | 7.6 | 54 |
| September | 30.3° | 16.9° | 83.6mm | 7.4 | 72 |
| October | 23.7° | 10° | 95.9mm | 9.4 | 81 |
| November | 17.4° | 3.7° | 64.1mm | 6.7 | 78 |
| December | 11.6° | -1° | 58.3mm | 6.4 | 56 |
January in Broken Arrow averages a daily high of 10.1°C with nights around -2.8°C. Expect roughly 5.8 wet days totalling 42.7mm. Demanding conditions — pack for it and plan indoor options.
February in Broken Arrow averages a daily high of 12.3°C with nights around -0.9°C. Expect roughly 6.7 wet days totalling 46.3mm. Generally workable, with some weather to plan around.
March in Broken Arrow averages a daily high of 17.9°C with nights around 4.5°C. Expect roughly 9.1 wet days totalling 85.9mm. Comfortable conditions for being outdoors all day.
April in Broken Arrow averages a daily high of 22.8°C with nights around 9.3°C. Expect roughly 9.4 wet days totalling 111.6mm. Comfortable conditions for being outdoors all day.
May in Broken Arrow averages a daily high of 26.9°C with nights around 14.9°C. Expect roughly 12.4 wet days totalling 162.3mm. Comfortable conditions for being outdoors all day.
June in Broken Arrow averages a daily high of 31.9°C with nights around 20.1°C. Expect roughly 9.4 wet days totalling 118.8mm. Generally workable, with some weather to plan around.
July in Broken Arrow averages a daily high of 34.7°C with nights around 22.1°C. Expect roughly 7.1 wet days totalling 88.9mm. Generally workable, with some weather to plan around.
August in Broken Arrow averages a daily high of 34.6°C with nights around 21.4°C. Expect roughly 7.6 wet days totalling 88.8mm. Demanding conditions — pack for it and plan indoor options.
September in Broken Arrow averages a daily high of 30.3°C with nights around 16.9°C. Expect roughly 7.4 wet days totalling 83.6mm. Generally workable, with some weather to plan around.
October in Broken Arrow averages a daily high of 23.7°C with nights around 10°C. Expect roughly 9.4 wet days totalling 95.9mm. Comfortable conditions for being outdoors all day.
November in Broken Arrow averages a daily high of 17.4°C with nights around 3.7°C. Expect roughly 6.7 wet days totalling 64.1mm. Comfortable conditions for being outdoors all day.
December in Broken Arrow averages a daily high of 11.6°C with nights around -1°C. Expect roughly 6.4 wet days totalling 58.3mm. 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. Broken Arrow peaks at 81.
Based on 30 years of records, March–May scores highest for comfort in Broken Arrow, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 34.7°C.
May is the wettest, averaging 162.3mm of rain across roughly 12.4 wet days.
January is the coolest month, with average daily highs around 10.1°C.