| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 17.6° | 6.1° | 114.8mm | 9.8 | 73 |
| February | 19.4° | 8.2° | 81mm | 9.1 | 80 |
| March | 22.5° | 11.8° | 94mm | 8.4 | 83 |
| April | 25.5° | 15.4° | 109.5mm | 7.7 | 85 |
| May | 29.1° | 20.4° | 154.8mm | 7.4 | 77 |
| June | 32.2° | 23.6° | 164.4mm | 9.4 | 60 |
| July | 33.3° | 24.7° | 158.2mm | 10.2 | 54 |
| August | 33.9° | 24.6° | 174.3mm | 10.2 | 52 |
| September | 31.6° | 21.6° | 160mm | 9 | 64 |
| October | 27.7° | 16° | 124.4mm | 7.1 | 83 |
| November | 22.6° | 11.3° | 124.4mm | 8.5 | 83 |
| December | 18.5° | 7.5° | 119.2mm | 9.8 | 76 |
January in Baytown averages a daily high of 17.6°C with nights around 6.1°C. Expect roughly 9.8 wet days totalling 114.8mm. Generally workable, with some weather to plan around.
February in Baytown averages a daily high of 19.4°C with nights around 8.2°C. Expect roughly 9.1 wet days totalling 81mm. Comfortable conditions for being outdoors all day.
March in Baytown averages a daily high of 22.5°C with nights around 11.8°C. Expect roughly 8.4 wet days totalling 94mm. Comfortable conditions for being outdoors all day.
April in Baytown averages a daily high of 25.5°C with nights around 15.4°C. Expect roughly 7.7 wet days totalling 109.5mm. Comfortable conditions for being outdoors all day.
May in Baytown averages a daily high of 29.1°C with nights around 20.4°C. Expect roughly 7.4 wet days totalling 154.8mm. Comfortable conditions for being outdoors all day.
June in Baytown averages a daily high of 32.2°C with nights around 23.6°C. Expect roughly 9.4 wet days totalling 164.4mm. Generally workable, with some weather to plan around.
July in Baytown averages a daily high of 33.3°C with nights around 24.7°C. Expect roughly 10.2 wet days totalling 158.2mm. Demanding conditions — pack for it and plan indoor options.
August in Baytown averages a daily high of 33.9°C with nights around 24.6°C. Expect roughly 10.2 wet days totalling 174.3mm. Demanding conditions — pack for it and plan indoor options.
September in Baytown averages a daily high of 31.6°C with nights around 21.6°C. Expect roughly 9 wet days totalling 160mm. Generally workable, with some weather to plan around.
October in Baytown averages a daily high of 27.7°C with nights around 16°C. Expect roughly 7.1 wet days totalling 124.4mm. Comfortable conditions for being outdoors all day.
November in Baytown averages a daily high of 22.6°C with nights around 11.3°C. Expect roughly 8.5 wet days totalling 124.4mm. Comfortable conditions for being outdoors all day.
December in Baytown averages a daily high of 18.5°C with nights around 7.5°C. Expect roughly 9.8 wet days totalling 119.2mm. Comfortable conditions for being outdoors all day.
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. Baytown peaks at 85.
Based on 30 years of records, February–May scores highest for comfort in Baytown, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 33.9°C.
August is the wettest, averaging 174.3mm of rain across roughly 10.2 wet days.
January is the coolest month, with average daily highs around 17.6°C.