| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3.6° | -6.1° | 31.7mm | 8.4 | 19 |
| February | 6.8° | -5° | 22.8mm | 7.4 | 32 |
| March | 11.4° | -0.6° | 29.7mm | 8.2 | 52 |
| April | 16.5° | 1.8° | 32.8mm | 8.5 | 72 |
| May | 21.4° | 6.8° | 28.9mm | 7.7 | 85 |
| June | 29.4° | 11.3° | 15.4mm | 3.2 | 84 |
| July | 33.4° | 15.6° | 17mm | 5.2 | 64 |
| August | 31.9° | 14.2° | 25.5mm | 5.2 | 70 |
| September | 26.5° | 8.6° | 25.7mm | 5.8 | 88 |
| October | 18.5° | 2.3° | 22.4mm | 5.3 | 85 |
| November | 9.6° | -2.7° | 22.9mm | 5.8 | 48 |
| December | 4.7° | -5.7° | 26.3mm | 7.9 | 24 |
January in Lehi averages a daily high of 3.6°C with nights around -6.1°C. Expect roughly 8.4 wet days totalling 31.7mm. A hard month to visit for comfort alone.
February in Lehi averages a daily high of 6.8°C with nights around -5°C. Expect roughly 7.4 wet days totalling 22.8mm. A hard month to visit for comfort alone.
March in Lehi averages a daily high of 11.4°C with nights around -0.6°C. Expect roughly 8.2 wet days totalling 29.7mm. Demanding conditions — pack for it and plan indoor options.
April in Lehi averages a daily high of 16.5°C with nights around 1.8°C. Expect roughly 8.5 wet days totalling 32.8mm. Generally workable, with some weather to plan around.
May in Lehi averages a daily high of 21.4°C with nights around 6.8°C. Expect roughly 7.7 wet days totalling 28.9mm. Comfortable conditions for being outdoors all day.
June in Lehi averages a daily high of 29.4°C with nights around 11.3°C. Expect roughly 3.2 wet days totalling 15.4mm. Comfortable conditions for being outdoors all day.
July in Lehi averages a daily high of 33.4°C with nights around 15.6°C. Expect roughly 5.2 wet days totalling 17mm. Generally workable, with some weather to plan around.
August in Lehi averages a daily high of 31.9°C with nights around 14.2°C. Expect roughly 5.2 wet days totalling 25.5mm. Generally workable, with some weather to plan around.
September in Lehi averages a daily high of 26.5°C with nights around 8.6°C. Expect roughly 5.8 wet days totalling 25.7mm. Comfortable conditions for being outdoors all day.
October in Lehi averages a daily high of 18.5°C with nights around 2.3°C. Expect roughly 5.3 wet days totalling 22.4mm. Comfortable conditions for being outdoors all day.
November in Lehi averages a daily high of 9.6°C with nights around -2.7°C. Expect roughly 5.8 wet days totalling 22.9mm. Demanding conditions — pack for it and plan indoor options.
December in Lehi averages a daily high of 4.7°C with nights around -5.7°C. Expect roughly 7.9 wet days totalling 26.3mm. 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. Lehi peaks at 88.
Based on 30 years of records, May–June scores highest for comfort in Lehi, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 33.4°C.
April is the wettest, averaging 32.8mm of rain across roughly 8.5 wet days.
January is the coolest month, with average daily highs around 3.6°C.