| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 21.9° | 6.7° | 8.7mm | 1.7 | 97 |
| February | 23.1° | 8.1° | 7.4mm | 2 | 96 |
| March | 26.6° | 10.9° | 4.9mm | 1.3 | 97 |
| April | 30.3° | 13.8° | 1.8mm | 0.5 | 86 |
| May | 34.4° | 17.5° | 0.8mm | 0.2 | 70 |
| June | 39.6° | 21.8° | 0.1mm | 0.1 | 49 |
| July | 42.1° | 26.2° | 2.2mm | 0.6 | 39 |
| August | 41.6° | 26.5° | 6.2mm | 1.2 | 39 |
| September | 39.2° | 23.1° | 7mm | 1.1 | 49 |
| October | 33.5° | 16.6° | 3.5mm | 0.6 | 73 |
| November | 26.7° | 10.6° | 4.7mm | 0.8 | 98 |
| December | 21.5° | 6.2° | 7.3mm | 1.7 | 97 |
January in Mexicali averages a daily high of 21.9°C with nights around 6.7°C. Rain is rare — about 1.7 wet days and 8.7mm across the month. Comfortable conditions for being outdoors all day.
February in Mexicali averages a daily high of 23.1°C with nights around 8.1°C. Rain is rare — about 2 wet days and 7.4mm across the month. Comfortable conditions for being outdoors all day.
March in Mexicali averages a daily high of 26.6°C with nights around 10.9°C. Rain is rare — about 1.3 wet days and 4.9mm across the month. Comfortable conditions for being outdoors all day.
April in Mexicali averages a daily high of 30.3°C with nights around 13.8°C. Rain is rare — about 0.5 wet days and 1.8mm across the month. Comfortable conditions for being outdoors all day.
May in Mexicali averages a daily high of 34.4°C with nights around 17.5°C. Rain is rare — about 0.2 wet days and 0.8mm across the month. Generally workable, with some weather to plan around.
June in Mexicali averages a daily high of 39.6°C with nights around 21.8°C. Rain is rare — about 0.1 wet days and 0.1mm across the month. Demanding conditions — pack for it and plan indoor options.
July in Mexicali averages a daily high of 42.1°C with nights around 26.2°C. Rain is rare — about 0.6 wet days and 2.2mm across the month. Demanding conditions — pack for it and plan indoor options.
August in Mexicali averages a daily high of 41.6°C with nights around 26.5°C. Rain is rare — about 1.2 wet days and 6.2mm across the month. Demanding conditions — pack for it and plan indoor options.
September in Mexicali averages a daily high of 39.2°C with nights around 23.1°C. Rain is rare — about 1.1 wet days and 7mm across the month. Demanding conditions — pack for it and plan indoor options.
October in Mexicali averages a daily high of 33.5°C with nights around 16.6°C. Rain is rare — about 0.6 wet days and 3.5mm across the month. Generally workable, with some weather to plan around.
November in Mexicali averages a daily high of 26.7°C with nights around 10.6°C. Rain is rare — about 0.8 wet days and 4.7mm across the month. Comfortable conditions for being outdoors all day.
December in Mexicali averages a daily high of 21.5°C with nights around 6.2°C. Rain is rare — about 1.7 wet days and 7.3mm across the month. Comfortable conditions for being outdoors all day.
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. Mexicali peaks at 98.
Based on 30 years of records, November–March scores highest for comfort in Mexicali, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 42.1°C.
January is the wettest, averaging 8.7mm of rain across roughly 1.7 wet days.
December is the coolest month, with average daily highs around 21.5°C.