Weather in Decatur, MI
Decatur, Tuesday, 20 October, 05:32
Partly cloudy. Feels like 46°. High 68°, low 43°.
Monthly outlook for Decatur, MI: average high 57.9°, average low 39.1°. That is 1.3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 26 October (71.2°), the coolest 2 November (29.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 60.9° | 56.5° | +2.5° |
| 30 October – 8 November | 52.7° | 52.8° | -0.1° |
| 9 November – 18 November | at normal | 47.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dowagiac (11 mi).
0
Decatur, Wednesday, 21 October
Clear. High 68°, low 38°.
0Decatur, Thursday, 22 October
Clear. High 67°, low 47°.
0Decatur, Friday, 23 October
Clear. High 61°, low 42°.
0Decatur, Saturday, 24 October
Clear. High 63°, low 42°.
0
Decatur, Sunday, 25 October
Overcast. High 68°, low 47°.
0
Decatur, Monday, 26 October
Light rain. High 71°, low 51°.
0Decatur, Tuesday, 27 October
Light rain. High 50°, low 40°.
0.02
Decatur, Wednesday, 28 October
Light snow. High 42°, low 31°.
0Decatur, Thursday, 29 October
Clear. High 50°, low 33°.
0
Decatur, Friday, 30 October
Partly cloudy. High 53°, low 41°.
0Decatur, Saturday, 31 October
Partly cloudy. High 53°, low 38°.
0
Decatur, Sunday, 1 November
Mostly clear. High 50°, low 33°.
0Decatur, Monday, 2 November
Partly cloudy. High 51°, low 30°.
0Decatur, Tuesday, 3 November
Clear. High 54°, low 32°.
0Decatur, Wednesday, 4 November
Clear. High 56°, low 36°.
0.12
Decatur, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Decatur, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Decatur, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Decatur, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Decatur, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Decatur, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.1Decatur, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.09Decatur, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Decatur, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Decatur, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Decatur, Sunday, 15 November
Climate normal for this date — 60-year average.
0.08Decatur, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Decatur, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.12Decatur, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Decatur, MI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Decatur, MI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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