| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 2.4° | -7.4° | 95mm | 9.5 | 12 |
| February | 3.8° | -5.7° | 72.1mm | 7.1 | 22 |
| March | 7.9° | -1.9° | 96.2mm | 8.4 | 39 |
| April | 14.4° | 3.6° | 97.7mm | 10.5 | 61 |
| May | 20.4° | 9.4° | 98.6mm | 11.9 | 76 |
| June | 25.7° | 14.6° | 104.7mm | 10.6 | 79 |
| July | 28.7° | 18° | 102.7mm | 9.9 | 73 |
| August | 28° | 17.1° | 92mm | 9.4 | 77 |
| September | 24.1° | 12.7° | 93mm | 8.6 | 83 |
| October | 17.2° | 6.3° | 121.2mm | 10.7 | 70 |
| November | 11.1° | 0.9° | 87.7mm | 9.2 | 51 |
| December | 5.4° | -3.5° | 97.9mm | 9.2 | 27 |
January in Methuen averages a daily high of 2.4°C with nights around -7.4°C. Expect roughly 9.5 wet days totalling 95mm. A hard month to visit for comfort alone.
February in Methuen averages a daily high of 3.8°C with nights around -5.7°C. Expect roughly 7.1 wet days totalling 72.1mm. A hard month to visit for comfort alone.
March in Methuen averages a daily high of 7.9°C with nights around -1.9°C. Expect roughly 8.4 wet days totalling 96.2mm. Demanding conditions — pack for it and plan indoor options.
April in Methuen averages a daily high of 14.4°C with nights around 3.6°C. Expect roughly 10.5 wet days totalling 97.7mm. Generally workable, with some weather to plan around.
May in Methuen averages a daily high of 20.4°C with nights around 9.4°C. Expect roughly 11.9 wet days totalling 98.6mm. Comfortable conditions for being outdoors all day.
June in Methuen averages a daily high of 25.7°C with nights around 14.6°C. Expect roughly 10.6 wet days totalling 104.7mm. Comfortable conditions for being outdoors all day.
July in Methuen averages a daily high of 28.7°C with nights around 18°C. Expect roughly 9.9 wet days totalling 102.7mm. Generally workable, with some weather to plan around.
August in Methuen averages a daily high of 28°C with nights around 17.1°C. Expect roughly 9.4 wet days totalling 92mm. Comfortable conditions for being outdoors all day.
September in Methuen averages a daily high of 24.1°C with nights around 12.7°C. Expect roughly 8.6 wet days totalling 93mm. Comfortable conditions for being outdoors all day.
October in Methuen averages a daily high of 17.2°C with nights around 6.3°C. Expect roughly 10.7 wet days totalling 121.2mm. Generally workable, with some weather to plan around.
November in Methuen averages a daily high of 11.1°C with nights around 0.9°C. Expect roughly 9.2 wet days totalling 87.7mm. Demanding conditions — pack for it and plan indoor options.
December in Methuen averages a daily high of 5.4°C with nights around -3.5°C. Expect roughly 9.2 wet days totalling 97.9mm. A hard month to visit for comfort alone.
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. Methuen peaks at 83.
Based on 30 years of records, May–June scores highest for comfort in Methuen, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.7°C.
October is the wettest, averaging 121.2mm of rain across roughly 10.7 wet days.
January is the coolest month, with average daily highs around 2.4°C.