Nowmal › Michigan › Calhoun County
Calhoun County, Michigan
Climate-adjusted normal temperatures for 2026 — what “normal” looks like when it’s measured against today’s climate instead of a 30-year average centered on 2005.
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Calhoun County’s official normal high — the 1991–2020 average shown by weather apps — now understates the local climate by an average of 0.8°F across the year. The gap is widest in March (+2.0°F), and warming here has been fastest in winter. That places Calhoun County #1,291 of 3,136 U.S. counties for how far “normal” has drifted from reality.
Month by month
1991 called. It wants its climate baseline back.
| Month | Normal high | Adjusted high | Normal low | Adjusted low | Gap (high) |
|---|---|---|---|---|---|
| January | 30.7° | 31.6° | 16.5° | 18.4° | +0.9° |
| February | 34.0° | 35.8° | 17.9° | 20.1° | +1.8° |
| March | 45.0° | 47.0° | 25.8° | 27.8° | +2.0° |
| April | 58.2° | 59.0° | 36.1° | 37.3° | +0.8° |
| May | 69.7° | 70.2° | 47.0° | 48.5° | +0.5° |
| June | 78.9° | 79.3° | 56.7° | 58.1° | +0.4° |
| July | 82.6° | 82.3° | 60.2° | 61.2° | +-0.3° |
| August | 80.2° | 79.9° | 58.6° | 59.8° | +-0.3° |
| September | 73.6° | 74.0° | 51.0° | 52.0° | +0.4° |
| October | 60.9° | 61.1° | 40.7° | 42.0° | +0.2° |
| November | 46.9° | 48.3° | 30.9° | 32.1° | +1.4° |
| December | 35.8° | 37.8° | 22.5° | 25.0° | +2.0° |
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“normal” temperature in every weather app is a 30-year average (1991–2020) — a number centered on mid-2005, two decades out of date in a warming climate.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 official normal is the 1991–2020 average from NOAA’s homogenized county climate record (nClimDiv). The warming trend is fit to the county’s full record since 1895 using NOAA’s published hinge-fit approach — flat before 1975, linear after — then the normal is advanced 20.5 years to 2026. Full details on the methodology page.
Cities in Calhoun County: Battle Creek · Albion · Marshall · Springfield
More in Michigan: Benzie County · Leelanau County · Grand Traverse County · Alpena County · Missaukee County · Iosco County · all Michigan counties
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