Nowmal › Ohio › Mentor-on-the-Lake
Mentor-on-the-Lake, Ohio
The week’s forecast, measured against two yardsticks: the “normal” your weather app still uses — a 1991–2020 average centered on 2005 — and the climate-adjusted normal, which here runs +1.4°F warmer. Same NOAA data. No pretending.
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Month by month
1991 called. It wants its climate baseline back.
| Month | Normal high | Adjusted high | Normal low | Adjusted low | Gap (high) |
|---|---|---|---|---|---|
| January | 34.1° | 35.4° | 20.4° | 22.0° | +1.3° |
| February | 36.5° | 39.0° | 20.7° | 22.8° | +2.4° |
| March | 44.9° | 47.2° | 28.2° | 29.8° | +2.3° |
| April | 57.7° | 59.6° | 37.8° | 38.9° | +1.9° |
| May | 68.8° | 69.9° | 48.4° | 49.6° | +1.2° |
| June | 77.4° | 78.2° | 58.2° | 59.5° | +0.8° |
| July | 81.2° | 81.7° | 63.1° | 64.5° | +0.5° |
| August | 79.8° | 80.7° | 61.5° | 62.9° | +0.8° |
| September | 73.7° | 74.5° | 55.0° | 56.3° | +0.8° |
| October | 62.1° | 62.9° | 44.7° | 46.1° | +0.9° |
| November | 49.7° | 51.6° | 35.0° | 36.2° | +1.9° |
| December | 39.1° | 41.6° | 26.8° | 29.0° | +2.4° |
The “normal” temperature in every weather app is a 30-year average (1991–2020) — a number centered on mid-2005, two decades out of date in a warming climate. The Climate-Adjusted Normal takes NOAA’s official normal and advances it to the present using this county’s own measured warming trend.
It isn’t a forecast — it’s a more honest yardstick for what “normal” means now. Read why Nowmal exists →
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About this data
The forecast is the National Weather Service’s, for Mentor-on-the-Lake itself. Normals and the warming trend are computed at county level (Lake County) from NOAA’s homogenized climate record, because climate trends vary smoothly — nearby towns warm at statistically indistinguishable rates. Method details on the methodology page.
Nearby: Mentor · Willoughby · Painesville · Eastlake · Willowick · Wickliffe · Willoughby Hills · Kirtland · Lake County data page
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