| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 15.9° | 0.7° | 20.4mm | 4.2 | 77 |
| February | 17.2° | 2° | 30.2mm | 4.2 | 83 |
| March | 20.3° | 4.2° | 15.5mm | 3.2 | 94 |
| April | 23.6° | 6.6° | 8.2mm | 1.8 | 96 |
| May | 28.3° | 10.4° | 2mm | 0.8 | 93 |
| June | 34.1° | 14.6° | 0.4mm | 0.2 | 71 |
| July | 37.5° | 18.2° | 5.2mm | 0.8 | 56 |
| August | 37.1° | 17.5° | 5.2mm | 0.8 | 58 |
| September | 33.8° | 14.2° | 4.3mm | 0.8 | 71 |
| October | 27° | 8.4° | 8.9mm | 1.1 | 98 |
| November | 20.4° | 3.3° | 9mm | 2 | 96 |
| December | 15.1° | 0.3° | 22mm | 3.4 | 75 |
January in Hesperia averages a daily high of 15.9°C with nights around 0.7°C. Expect roughly 4.2 wet days totalling 20.4mm. Comfortable conditions for being outdoors all day.
February in Hesperia averages a daily high of 17.2°C with nights around 2°C. Expect roughly 4.2 wet days totalling 30.2mm. Comfortable conditions for being outdoors all day.
March in Hesperia averages a daily high of 20.3°C with nights around 4.2°C. Expect roughly 3.2 wet days totalling 15.5mm. Comfortable conditions for being outdoors all day.
April in Hesperia averages a daily high of 23.6°C with nights around 6.6°C. Rain is rare — about 1.8 wet days and 8.2mm across the month. Comfortable conditions for being outdoors all day.
May in Hesperia averages a daily high of 28.3°C with nights around 10.4°C. Rain is rare — about 0.8 wet days and 2mm across the month. Comfortable conditions for being outdoors all day.
June in Hesperia averages a daily high of 34.1°C with nights around 14.6°C. Rain is rare — about 0.2 wet days and 0.4mm across the month. Generally workable, with some weather to plan around.
July in Hesperia averages a daily high of 37.5°C with nights around 18.2°C. Rain is rare — about 0.8 wet days and 5.2mm across the month. Generally workable, with some weather to plan around.
August in Hesperia averages a daily high of 37.1°C with nights around 17.5°C. Rain is rare — about 0.8 wet days and 5.2mm across the month. Generally workable, with some weather to plan around.
September in Hesperia averages a daily high of 33.8°C with nights around 14.2°C. Rain is rare — about 0.8 wet days and 4.3mm across the month. Generally workable, with some weather to plan around.
October in Hesperia averages a daily high of 27°C with nights around 8.4°C. Rain is rare — about 1.1 wet days and 8.9mm across the month. Comfortable conditions for being outdoors all day.
November in Hesperia averages a daily high of 20.4°C with nights around 3.3°C. Rain is rare — about 2 wet days and 9mm across the month. Comfortable conditions for being outdoors all day.
December in Hesperia averages a daily high of 15.1°C with nights around 0.3°C. Expect roughly 3.4 wet days totalling 22mm. 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. Hesperia peaks at 98.
Based on 30 years of records, March–May scores highest for comfort in Hesperia, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 37.5°C.
February is the wettest, averaging 30.2mm of rain across roughly 4.2 wet days.
December is the coolest month, with average daily highs around 15.1°C.