| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 7.4° | -7.6° | 10.8mm | 4.9 | 35 |
| February | 7.7° | -7.1° | 15mm | 5.6 | 36 |
| March | 12.7° | -2.6° | 28.9mm | 6.1 | 58 |
| April | 16.3° | 1.1° | 42.3mm | 8.1 | 71 |
| May | 21.1° | 6.4° | 64.7mm | 10.9 | 78 |
| June | 28.3° | 12° | 44mm | 8 | 79 |
| July | 31.9° | 15.6° | 52.2mm | 8.7 | 63 |
| August | 30.7° | 14.4° | 45.1mm | 8.7 | 68 |
| September | 26.4° | 9.6° | 32.8mm | 6.3 | 87 |
| October | 18.9° | 2.4° | 22mm | 5.1 | 86 |
| November | 12.6° | -3.1° | 14mm | 4.9 | 59 |
| December | 7.6° | -7.5° | 12.3mm | 4.6 | 37 |
January in Commerce City averages a daily high of 7.4°C with nights around -7.6°C. Expect roughly 4.9 wet days totalling 10.8mm. Demanding conditions — pack for it and plan indoor options.
February in Commerce City averages a daily high of 7.7°C with nights around -7.1°C. Expect roughly 5.6 wet days totalling 15mm. Demanding conditions — pack for it and plan indoor options.
March in Commerce City averages a daily high of 12.7°C with nights around -2.6°C. Expect roughly 6.1 wet days totalling 28.9mm. Generally workable, with some weather to plan around.
April in Commerce City averages a daily high of 16.3°C with nights around 1.1°C. Expect roughly 8.1 wet days totalling 42.3mm. Generally workable, with some weather to plan around.
May in Commerce City averages a daily high of 21.1°C with nights around 6.4°C. Expect roughly 10.9 wet days totalling 64.7mm. Comfortable conditions for being outdoors all day.
June in Commerce City averages a daily high of 28.3°C with nights around 12°C. Expect roughly 8 wet days totalling 44mm. Comfortable conditions for being outdoors all day.
July in Commerce City averages a daily high of 31.9°C with nights around 15.6°C. Expect roughly 8.7 wet days totalling 52.2mm. Generally workable, with some weather to plan around.
August in Commerce City averages a daily high of 30.7°C with nights around 14.4°C. Expect roughly 8.7 wet days totalling 45.1mm. Generally workable, with some weather to plan around.
September in Commerce City averages a daily high of 26.4°C with nights around 9.6°C. Expect roughly 6.3 wet days totalling 32.8mm. Comfortable conditions for being outdoors all day.
October in Commerce City averages a daily high of 18.9°C with nights around 2.4°C. Expect roughly 5.1 wet days totalling 22mm. Comfortable conditions for being outdoors all day.
November in Commerce City averages a daily high of 12.6°C with nights around -3.1°C. Expect roughly 4.9 wet days totalling 14mm. Generally workable, with some weather to plan around.
December in Commerce City averages a daily high of 7.6°C with nights around -7.5°C. Expect roughly 4.6 wet days totalling 12.3mm. Demanding conditions — pack for it and plan indoor options.
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. Commerce City peaks at 87.
Based on 30 years of records, September–October scores highest for comfort in Commerce City, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 31.9°C.
May is the wettest, averaging 64.7mm of rain across roughly 10.9 wet days.
January is the coolest month, with average daily highs around 7.4°C.