Weather in Decatur, MI
Decatur, Wednesday, 21 October, 05:51
Clear. Feels like 42°. High 68°, low 44°.
Monthly outlook for Decatur, MI: average high 60.7°, average low 46.6°. That is 3.1° above the climate normal for October. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 5 November (72.4°), the coolest 31 October (32.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 62.6° | 56.3° | +3.5° |
| 31 October – 9 November | 57.6° | 52.3° | +3° |
| 10 November – 19 November | at normal | 46.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dowagiac (11 mi).
0
Decatur, Thursday, 22 October
Clear. High 69°, low 44°.
0
Decatur, Friday, 23 October
Partly cloudy. High 66°, low 46°.
0Decatur, Saturday, 24 October
Clear. High 66°, low 47°.
0
Decatur, Sunday, 25 October
Overcast. High 67°, low 49°.
0Decatur, Monday, 26 October
Partly cloudy. High 69°, low 51°.
0.04
Decatur, Tuesday, 27 October
Light rain. High 56°, low 48°.
0Decatur, Wednesday, 28 October
Overcast. High 60°, low 48°.
0.14Decatur, Thursday, 29 October
Light rain. High 55°, low 41°.
0
Decatur, Friday, 30 October
Mostly clear. High 50°, low 36°.
0Decatur, Saturday, 31 October
Overcast. High 49°, low 32°.
0.44Decatur, Sunday, 1 November
Rain. High 49°, low 42°.
0.31Decatur, Monday, 2 November
Light rain. High 53°, low 49°.
0Decatur, Tuesday, 3 November
Light rain. High 58°, low 52°.
0.35Decatur, Wednesday, 4 November
Rain. High 65°, low 53°.
0.09Decatur, Thursday, 5 November
Light rain. High 72°, low 62°.
0.08
Decatur, 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.
0.08Decatur, Thursday, 19 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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