| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 18.7° | 2.8° | 34.8mm | 4.8 | 86 |
| February | 19.3° | 2.9° | 35.8mm | 5.2 | 87 |
| March | 21.2° | 5.1° | 37.6mm | 5.8 | 88 |
| April | 24.5° | 7.4° | 13.1mm | 2.4 | 95 |
| May | 26° | 10.5° | 5.4mm | 1.6 | 97 |
| June | 31.7° | 13.6° | 0.6mm | 0.5 | 80 |
| July | 35.1° | 17.1° | 3.4mm | 0.8 | 66 |
| August | 35.3° | 17.4° | 12.2mm | 1.2 | 64 |
| September | 32.8° | 15.6° | 4.1mm | 1.2 | 74 |
| October | 28.4° | 10.5° | 4mm | 1.2 | 92 |
| November | 23.2° | 5.2° | 14.2mm | 2.8 | 94 |
| December | 18.4° | 3° | 36.5mm | 5.2 | 84 |
January in Moreno Valley averages a daily high of 18.7°C with nights around 2.8°C. Expect roughly 4.8 wet days totalling 34.8mm. Comfortable conditions for being outdoors all day.
February in Moreno Valley averages a daily high of 19.3°C with nights around 2.9°C. Expect roughly 5.2 wet days totalling 35.8mm. Comfortable conditions for being outdoors all day.
March in Moreno Valley averages a daily high of 21.2°C with nights around 5.1°C. Expect roughly 5.8 wet days totalling 37.6mm. Comfortable conditions for being outdoors all day.
April in Moreno Valley averages a daily high of 24.5°C with nights around 7.4°C. Rain is rare — about 2.4 wet days and 13.1mm across the month. Comfortable conditions for being outdoors all day.
May in Moreno Valley averages a daily high of 26°C with nights around 10.5°C. Rain is rare — about 1.6 wet days and 5.4mm across the month. Comfortable conditions for being outdoors all day.
June in Moreno Valley averages a daily high of 31.7°C with nights around 13.6°C. Rain is rare — about 0.5 wet days and 0.6mm across the month. Comfortable conditions for being outdoors all day.
July in Moreno Valley averages a daily high of 35.1°C with nights around 17.1°C. Rain is rare — about 0.8 wet days and 3.4mm across the month. Generally workable, with some weather to plan around.
August in Moreno Valley averages a daily high of 35.3°C with nights around 17.4°C. Rain is rare — about 1.2 wet days and 12.2mm across the month. Generally workable, with some weather to plan around.
September in Moreno Valley averages a daily high of 32.8°C with nights around 15.6°C. Rain is rare — about 1.2 wet days and 4.1mm across the month. Generally workable, with some weather to plan around.
October in Moreno Valley averages a daily high of 28.4°C with nights around 10.5°C. Rain is rare — about 1.2 wet days and 4mm across the month. Comfortable conditions for being outdoors all day.
November in Moreno Valley averages a daily high of 23.2°C with nights around 5.2°C. Rain is rare — about 2.8 wet days and 14.2mm across the month. Comfortable conditions for being outdoors all day.
December in Moreno Valley averages a daily high of 18.4°C with nights around 3°C. Expect roughly 5.2 wet days totalling 36.5mm. 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. Moreno Valley peaks at 97.
Based on 30 years of records, April–May scores highest for comfort in Moreno Valley, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 35.3°C.
March is the wettest, averaging 37.6mm of rain across roughly 5.8 wet days.
December is the coolest month, with average daily highs around 18.4°C.