| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3° | -5.9° | 78.4mm | 10.5 | 13 |
| February | 4.5° | -5.1° | 66.6mm | 9.5 | 21 |
| March | 9.2° | -1.5° | 90mm | 10.6 | 39 |
| April | 15.9° | 4.5° | 99.5mm | 11.4 | 64 |
| May | 21.8° | 9.7° | 87.5mm | 12.8 | 74 |
| June | 26.6° | 15.3° | 97.1mm | 11.2 | 78 |
| July | 29.4° | 18.7° | 112.2mm | 11.5 | 67 |
| August | 28.6° | 18° | 91mm | 10.6 | 72 |
| September | 24.6° | 13.6° | 107.4mm | 10 | 80 |
| October | 17.9° | 6.9° | 108mm | 11.2 | 71 |
| November | 11.5° | 1.1° | 82.6mm | 9.4 | 53 |
| December | 5.6° | -3° | 96.2mm | 11.6 | 23 |
January in West Hartford averages a daily high of 3°C with nights around -5.9°C. Expect roughly 10.5 wet days totalling 78.4mm. A hard month to visit for comfort alone.
February in West Hartford averages a daily high of 4.5°C with nights around -5.1°C. Expect roughly 9.5 wet days totalling 66.6mm. A hard month to visit for comfort alone.
March in West Hartford averages a daily high of 9.2°C with nights around -1.5°C. Expect roughly 10.6 wet days totalling 90mm. Demanding conditions — pack for it and plan indoor options.
April in West Hartford averages a daily high of 15.9°C with nights around 4.5°C. Expect roughly 11.4 wet days totalling 99.5mm. Generally workable, with some weather to plan around.
May in West Hartford averages a daily high of 21.8°C with nights around 9.7°C. Expect roughly 12.8 wet days totalling 87.5mm. Generally workable, with some weather to plan around.
June in West Hartford averages a daily high of 26.6°C with nights around 15.3°C. Expect roughly 11.2 wet days totalling 97.1mm. Comfortable conditions for being outdoors all day.
July in West Hartford averages a daily high of 29.4°C with nights around 18.7°C. Expect roughly 11.5 wet days totalling 112.2mm. Generally workable, with some weather to plan around.
August in West Hartford averages a daily high of 28.6°C with nights around 18°C. Expect roughly 10.6 wet days totalling 91mm. Generally workable, with some weather to plan around.
September in West Hartford averages a daily high of 24.6°C with nights around 13.6°C. Expect roughly 10 wet days totalling 107.4mm. Comfortable conditions for being outdoors all day.
October in West Hartford averages a daily high of 17.9°C with nights around 6.9°C. Expect roughly 11.2 wet days totalling 108mm. Generally workable, with some weather to plan around.
November in West Hartford averages a daily high of 11.5°C with nights around 1.1°C. Expect roughly 9.4 wet days totalling 82.6mm. Demanding conditions — pack for it and plan indoor options.
December in West Hartford averages a daily high of 5.6°C with nights around -3°C. Expect roughly 11.6 wet days totalling 96.2mm. 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. West Hartford peaks at 80.
Based on 30 years of records, May–June scores highest for comfort in West Hartford, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 29.4°C.
July is the wettest, averaging 112.2mm of rain across roughly 11.5 wet days.
January is the coolest month, with average daily highs around 3°C.