| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 5.3° | -3.3° | 74.1mm | 6.7 | 32 |
| February | 7.1° | -2.6° | 65.3mm | 5.5 | 41 |
| March | 12.4° | 1.8° | 78.8mm | 7.5 | 60 |
| April | 17.8° | 6.6° | 102.3mm | 8.5 | 76 |
| May | 22.8° | 12.4° | 107.8mm | 9.9 | 80 |
| June | 27° | 17.4° | 128.3mm | 7.2 | 86 |
| July | 30.2° | 20.7° | 110.6mm | 8.5 | 70 |
| August | 28.6° | 19.2° | 93.5mm | 7.3 | 79 |
| September | 24.7° | 15.3° | 114.1mm | 3.9 | 92 |
| October | 18.9° | 9.1° | 133.6mm | 8.1 | 80 |
| November | 13° | 3.3° | 64.4mm | 6.2 | 65 |
| December | 8.5° | 0° | 101.6mm | 7.9 | 44 |
January in Towson averages a daily high of 5.3°C with nights around -3.3°C. Expect roughly 6.7 wet days totalling 74.1mm. A hard month to visit for comfort alone.
February in Towson averages a daily high of 7.1°C with nights around -2.6°C. Expect roughly 5.5 wet days totalling 65.3mm. Demanding conditions — pack for it and plan indoor options.
March in Towson averages a daily high of 12.4°C with nights around 1.8°C. Expect roughly 7.5 wet days totalling 78.8mm. Generally workable, with some weather to plan around.
April in Towson averages a daily high of 17.8°C with nights around 6.6°C. Expect roughly 8.5 wet days totalling 102.3mm. Comfortable conditions for being outdoors all day.
May in Towson averages a daily high of 22.8°C with nights around 12.4°C. Expect roughly 9.9 wet days totalling 107.8mm. Comfortable conditions for being outdoors all day.
June in Towson averages a daily high of 27°C with nights around 17.4°C. Expect roughly 7.2 wet days totalling 128.3mm. Comfortable conditions for being outdoors all day.
July in Towson averages a daily high of 30.2°C with nights around 20.7°C. Expect roughly 8.5 wet days totalling 110.6mm. Generally workable, with some weather to plan around.
August in Towson averages a daily high of 28.6°C with nights around 19.2°C. Expect roughly 7.3 wet days totalling 93.5mm. Comfortable conditions for being outdoors all day.
September in Towson averages a daily high of 24.7°C with nights around 15.3°C. Expect roughly 3.9 wet days totalling 114.1mm. Comfortable conditions for being outdoors all day.
October in Towson averages a daily high of 18.9°C with nights around 9.1°C. Expect roughly 8.1 wet days totalling 133.6mm. Comfortable conditions for being outdoors all day.
November in Towson averages a daily high of 13°C with nights around 3.3°C. Expect roughly 6.2 wet days totalling 64.4mm. Generally workable, with some weather to plan around.
December in Towson averages a daily high of 8.5°C with nights around 0°C. Expect roughly 7.9 wet days totalling 101.6mm. Demanding conditions — pack for it and plan indoor options.
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. Towson peaks at 92.
Based on 30 years of records, June scores highest for comfort in Towson, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 30.2°C.
October is the wettest, averaging 133.6mm of rain across roughly 8.1 wet days.
January is the coolest month, with average daily highs around 5.3°C.