| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 13.6° | 3.4° | 72.7mm | 9.7 | 60 |
| February | 16.7° | 4.1° | 53.1mm | 8.5 | 72 |
| March | 19.9° | 5.7° | 49mm | 7.3 | 85 |
| April | 23.4° | 7.7° | 25.8mm | 4 | 92 |
| May | 28.4° | 11.3° | 16.1mm | 2.4 | 90 |
| June | 32.9° | 14.4° | 2.4mm | 0.5 | 75 |
| July | 36.3° | 17° | 0mm | 0 | 63 |
| August | 35.4° | 16.1° | 0.2mm | 0.2 | 66 |
| September | 32.6° | 13.8° | 1.2mm | 0.6 | 76 |
| October | 26.6° | 9.6° | 19.3mm | 2.5 | 95 |
| November | 19.2° | 5.5° | 30.5mm | 5 | 87 |
| December | 13.9° | 3° | 57.9mm | 9.1 | 62 |
January in Merced averages a daily high of 13.6°C with nights around 3.4°C. Expect roughly 9.7 wet days totalling 72.7mm. Generally workable, with some weather to plan around.
February in Merced averages a daily high of 16.7°C with nights around 4.1°C. Expect roughly 8.5 wet days totalling 53.1mm. Generally workable, with some weather to plan around.
March in Merced averages a daily high of 19.9°C with nights around 5.7°C. Expect roughly 7.3 wet days totalling 49mm. Comfortable conditions for being outdoors all day.
April in Merced averages a daily high of 23.4°C with nights around 7.7°C. Expect roughly 4 wet days totalling 25.8mm. Comfortable conditions for being outdoors all day.
May in Merced averages a daily high of 28.4°C with nights around 11.3°C. Rain is rare — about 2.4 wet days and 16.1mm across the month. Comfortable conditions for being outdoors all day.
June in Merced averages a daily high of 32.9°C with nights around 14.4°C. Rain is rare — about 0.5 wet days and 2.4mm across the month. Comfortable conditions for being outdoors all day.
July in Merced averages a daily high of 36.3°C with nights around 17°C. Rain is rare — about 0 wet days and 0mm across the month. Generally workable, with some weather to plan around.
August in Merced averages a daily high of 35.4°C with nights around 16.1°C. Rain is rare — about 0.2 wet days and 0.2mm across the month. Generally workable, with some weather to plan around.
September in Merced averages a daily high of 32.6°C with nights around 13.8°C. Rain is rare — about 0.6 wet days and 1.2mm across the month. Comfortable conditions for being outdoors all day.
October in Merced averages a daily high of 26.6°C with nights around 9.6°C. Rain is rare — about 2.5 wet days and 19.3mm across the month. Comfortable conditions for being outdoors all day.
November in Merced averages a daily high of 19.2°C with nights around 5.5°C. Expect roughly 5 wet days totalling 30.5mm. Comfortable conditions for being outdoors all day.
December in Merced averages a daily high of 13.9°C with nights around 3°C. Expect roughly 9.1 wet days totalling 57.9mm. 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. Merced peaks at 95.
Based on 30 years of records, April–May scores highest for comfort in Merced, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 36.3°C.
January is the wettest, averaging 72.7mm of rain across roughly 9.7 wet days.
January is the coolest month, with average daily highs around 13.6°C.