| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0.7° | -7.1° | 68.2mm | 19.7 | 1 |
| February | 1.8° | -6.9° | 56.3mm | 15.9 | 2 |
| March | 6.6° | -2.8° | 59.4mm | 15.2 | 20 |
| April | 13.4° | 2.6° | 75.2mm | 13.5 | 52 |
| May | 20.5° | 8.7° | 72mm | 12.2 | 76 |
| June | 25.2° | 14° | 86.7mm | 11.9 | 76 |
| July | 27.6° | 16.5° | 97.4mm | 11.7 | 74 |
| August | 26.7° | 15.9° | 86.2mm | 10.5 | 79 |
| September | 23° | 12° | 79mm | 10.8 | 78 |
| October | 16.2° | 6.3° | 86.1mm | 14.1 | 60 |
| November | 9.3° | 0.8° | 68.9mm | 14.6 | 35 |
| December | 3.5° | -3.5° | 67.7mm | 18.4 | 9 |
January in Irondequoit averages a daily high of 0.7°C with nights around -7.1°C. Expect roughly 19.7 wet days totalling 68.2mm. A hard month to visit for comfort alone.
February in Irondequoit averages a daily high of 1.8°C with nights around -6.9°C. Expect roughly 15.9 wet days totalling 56.3mm. A hard month to visit for comfort alone.
March in Irondequoit averages a daily high of 6.6°C with nights around -2.8°C. Expect roughly 15.2 wet days totalling 59.4mm. A hard month to visit for comfort alone.
April in Irondequoit averages a daily high of 13.4°C with nights around 2.6°C. Expect roughly 13.5 wet days totalling 75.2mm. Demanding conditions — pack for it and plan indoor options.
May in Irondequoit averages a daily high of 20.5°C with nights around 8.7°C. Expect roughly 12.2 wet days totalling 72mm. Comfortable conditions for being outdoors all day.
June in Irondequoit averages a daily high of 25.2°C with nights around 14°C. Expect roughly 11.9 wet days totalling 86.7mm. Comfortable conditions for being outdoors all day.
July in Irondequoit averages a daily high of 27.6°C with nights around 16.5°C. Expect roughly 11.7 wet days totalling 97.4mm. Generally workable, with some weather to plan around.
August in Irondequoit averages a daily high of 26.7°C with nights around 15.9°C. Expect roughly 10.5 wet days totalling 86.2mm. Comfortable conditions for being outdoors all day.
September in Irondequoit averages a daily high of 23°C with nights around 12°C. Expect roughly 10.8 wet days totalling 79mm. Comfortable conditions for being outdoors all day.
October in Irondequoit averages a daily high of 16.2°C with nights around 6.3°C. Expect roughly 14.1 wet days totalling 86.1mm. Generally workable, with some weather to plan around.
November in Irondequoit averages a daily high of 9.3°C with nights around 0.8°C. Expect roughly 14.6 wet days totalling 68.9mm. Demanding conditions — pack for it and plan indoor options.
December in Irondequoit averages a daily high of 3.5°C with nights around -3.5°C. Expect roughly 18.4 wet days totalling 67.7mm. 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. Irondequoit peaks at 79.
Based on 30 years of records, May–September scores highest for comfort in Irondequoit, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 27.6°C.
July is the wettest, averaging 97.4mm of rain across roughly 11.7 wet days.
January is the coolest month, with average daily highs around 0.7°C.